/orbit_info/cycle_number[
0
..0]
(Type is Int16)
-
attributes
-
HDF5_OBJ_FULLPATH:
/orbit_info/cycle_number
-
units:
1
-
contentType:
referenceInformation
-
long_name:
Cycle Number
-
description:
A count of the number of exact repeats of this reference orbit.
-
source:
Operations
-
coordinates:
delta_time
-
valid_min:
0
-
valid_max:
50
/orbit_info/delta_time[
0
..0]
(Type is Float64)
-
attributes
-
HDF5_OBJ_FULLPATH:
/orbit_info/delta_time
-
units:
seconds since 2018-01-01
-
contentType:
referenceInformation
-
long_name:
Elapsed GPS seconds
-
standard_name:
time
-
description:
Number of GPS seconds since the ATLAS SDP epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed.
-
source:
Operations
-
CLASS:
DIMENSION_SCALE
/orbit_info/orbit_number[
0
..0]
(Type is UInt16)
-
attributes
-
HDF5_OBJ_FULLPATH:
/orbit_info/orbit_number
-
units:
1
-
contentType:
referenceInformation
-
long_name:
Orbit Number
-
description:
Unique identifying number for each planned ICESat-2 orbit.
-
source:
Operations
-
coordinates:
delta_time
-
valid_min:
1
-
valid_max:
65000
/orbit_info/sc_orient[
0
..0]
(Type is Int16)
-
attributes
-
HDF5_OBJ_FULLPATH:
/orbit_info/sc_orient
-
units:
1
-
contentType:
referenceInformation
-
long_name:
Spacecraft Orientation
-
description:
This parameter tracks the spacecraft orientation between between forward, backward and transitional flight modes. ICESat-2 is considered to be flying forward when the weak beams are leading the strong beams; and backward when the strong beams are leading the weak beams. ICESat-2 is considered to be in transition while it is maneuvering between the two orientations. Science quality is potentially degraded while in transition mode.
-
source:
POD/PPD
-
coordinates:
sc_orient_time
-
flag_meanings:
backward forward transition
-
flag_values:
0, 1, 2
-
valid_min:
0
-
valid_max:
2
/orbit_info/rgt[
0
..0]
(Type is Int16)
-
attributes
-
HDF5_OBJ_FULLPATH:
/orbit_info/rgt
-
units:
1
-
contentType:
referenceInformation
-
long_name:
Reference Ground track
-
description:
The reference ground track (RGT) is the track on the earth at which a specified unit vector within the observatory is pointed. Under nominal operating conditions, there will be no data collected along the RGT, as the RGT is spanned by GT3 and GT4. During slews or off-pointing, it is possible that ground tracks may intersect the RGT. The ICESat-2 mission has 1387 RGTs.
-
source:
Operations
-
coordinates:
delta_time
-
valid_min:
1
-
valid_max:
1387
/orbit_info/sc_orient_time[
0
..0]
(Type is Float64)
-
attributes
-
HDF5_OBJ_FULLPATH:
/orbit_info/sc_orient_time
-
units:
seconds since 2018-01-01
-
contentType:
referenceInformation
-
long_name:
Time of Last Spacecraft Orientation Change
-
standard_name:
time
-
description:
The time of the last spacecraft orientation change between forward, backward and transitional flight modes, expressed in seconds since the ATLAS SDP GPS Epoch. ICESat-2 is considered to be flying forward when the weak beams are leading the strong beams; and backward when the strong beams are leading the weak beams. ICESat-2 is considered to be in transition while it is maneuvering between the two orientations. Science quality is potentially degraded while in transition mode. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed.
-
source:
POD/PPD
-
coordinates:
delta_time
-
CLASS:
DIMENSION_SCALE
/profile_1/backg_signal_max2[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/backg_signal_max2
-
units:
counts
-
contentType:
modelResult
-
long_name:
Background signal max 2
-
description:
Background signal max2, in photons/bin, from the selectd method used. (Sm2 Defined in Atmosphere ATBD section 2.3.2)
-
source:
Atmosphere ATBD section 3.3.4
-
coordinates:
delta_time, latitude, longitude
/profile_1/sig_count_med[
0
..20026]
(Type is Int32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/sig_count_med
-
units:
counts
-
contentType:
referenceInformation
-
long_name:
Count of Signal Heights - Medium
-
description:
Count of medium-confidence signal photons
-
source:
ATL03 ATBD, Section 5
-
coordinates:
delta_time, latitude, longitude
/profile_1/backg_std_dev1[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/backg_std_dev1
-
units:
counts
-
contentType:
modelResult
-
long_name:
Background standard deviation 1
-
description:
Background standard deviation from the selected method used (Sstd1 Defined in Atmosphere ATBD section 2.3.2)
-
source:
Atmosphere ATBD section 3.3.4
-
coordinates:
delta_time, latitude, longitude
/profile_1/dem_flag[
0
..20026]
(Type is Int16)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/dem_flag
-
_FillValue:
127
-
units:
1
-
contentType:
referenceInformation
-
long_name:
DEM Source Flag
-
description:
Indicates source of the DEM height. Values: 0=None, 1=GIMP, 2=GMTED, 3=MSS.
-
source:
Atmosphere ATBD
-
coordinates:
delta_time, latitude, longitude
-
flag_meanings:
none gimp gmted mss
-
flag_values:
0, 1, 2, 3
-
valid_min:
0
-
valid_max:
3
/profile_1/backg_max_bin1[
0
..20026]
(Type is Int32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/backg_max_bin1
-
units:
counts
-
contentType:
modelResult
-
long_name:
Background max bin 1
-
description:
Background maximum bin from the selected method used. (Binmax1 Defined in Atmosphere ATBD section 2.3.2)
-
source:
Atmosphere ATBD section 3.3.4
-
coordinates:
delta_time, latitude, longitude
/profile_1/bckgrd_atlas/bckgrd_counts_reduced[
0
..160207]
(Type is Int32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/bckgrd_atlas/bckgrd_counts_reduced
-
units:
counts
-
long_name:
ATLAS 50-shot background count - reduced
-
description:
Number of photon counts in the 50-shot sum after subtracting the number of signal photon events, defined as in ATBD Section 5, in that span.
-
source:
ATL03 ATBD Section 7.3
-
coordinates:
delta_time
-
contentType:
modelResult
/profile_1/bckgrd_atlas/bckgrd_counts[
0
..160207]
(Type is Int32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/bckgrd_atlas/bckgrd_counts
-
units:
counts
-
contentType:
modelResult
-
long_name:
ATLAS 50-shot background count
-
description:
Onboard 50 shot background (200 Hz) sum of photon events within the altimetric range window.
-
source:
ATL03 ATBD Section 7.3
-
coordinates:
delta_time
/profile_1/bckgrd_atlas/delta_time[
0
..160207]
(Type is Float64)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/bckgrd_atlas/delta_time
-
units:
seconds since 2018-01-01
-
contentType:
modelResult
-
long_name:
Elapsed GPS seconds
-
standard_name:
time
-
description:
Number of GPS seconds since the ATLAS SDP epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed.
-
source:
Derived via Time Tagging
-
coordinates:
delta_time
-
CLASS:
DIMENSION_SCALE
-
NAME:
profile_1/bckgrd_atlas/delta_time
/profile_1/bckgrd_atlas/bckgrd_hist_top[
0
..160207]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/bckgrd_atlas/bckgrd_hist_top
-
units:
meters
-
contentType:
modelResult
-
long_name:
Top of the altimetric range window
-
description:
The height of the top of the altimetric histogram, in meters above the WGS-84 ellipsoid, with all geophysical corrections applied. Parameter is ingested at 50-Hz, and values are repeated to form a 200-Hz array.
-
source:
ATL03 ATBD Section 7.3
-
coordinates:
delta_time
/profile_1/bckgrd_atlas/bckgrd_int_height[
0
..160207]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/bckgrd_atlas/bckgrd_int_height
-
units:
meters
-
contentType:
modelResult
-
long_name:
Altimetric range window width
-
description:
The height of the altimetric range window. This is the height over which the 50-shot sum is generated. Parameter is ingested at 50-Hz, and values are repeated to form a 200-Hz array.
-
source:
ATL03 ATBD Section 7.3
-
coordinates:
delta_time
/profile_1/bckgrd_atlas/bckgrd_int_height_reduced[
0
..160207]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/bckgrd_atlas/bckgrd_int_height_reduced
-
units:
meters
-
contentType:
modelResult
-
long_name:
Altimetric range window height - reduced
-
description:
The height of the altimetric range window after subtracting the height span of the signal photon events in the 50-shot span.
-
source:
ATL03 ATBD Section 7.3
-
coordinates:
delta_time
/profile_1/bckgrd_atlas/bckgrd_rate[
0
..160207]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/bckgrd_atlas/bckgrd_rate
-
units:
counts / second
-
contentType:
modelResult
-
long_name:
Background count rate based on the ATLAS 50-shot sum
-
description:
The background count rate from the 50-shot altimetric histogram after removing the number of likely signal photons based on Section 5.
-
source:
ATL03 ATBD Section 7.3
-
coordinates:
delta_time
/profile_1/bckgrd_atlas/pce_mframe_cnt[
0
..160207]
(Type is UInt32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/bckgrd_atlas/pce_mframe_cnt
-
units:
counts
-
contentType:
referenceInformation
-
long_name:
PCE Major frame counter
-
description:
Major Frame ID - The major frame ID is read from the DFC and starts counting at DFC POR. The counter is used to identify individual major frames across diag and science packets. This counter can go for about 2.7 years before rolling over. It is in the first time tag science packet. Used as part of the photon ID
-
source:
ATL02
-
coordinates:
delta_time
/profile_1/sig_count_low[
0
..20026]
(Type is Int32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/sig_count_low
-
units:
counts
-
contentType:
referenceInformation
-
long_name:
Count of Signal Heights - Low
-
description:
Count of low-confidence signal photons
-
source:
ATL03 ATBD, Section 5
-
coordinates:
delta_time, latitude, longitude
/profile_1/backg_method1[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/backg_method1
-
units:
counts
-
contentType:
modelResult
-
long_name:
Background method 1
-
description:
Background from method 1in photons/bin. (pb1 Defined in Atmosphere ATBD section 2.3.2)
-
source:
Atmosphere ATBD section 3.3.4
-
coordinates:
delta_time, latitude, longitude
/profile_1/sig_h_sdev_hi[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/sig_h_sdev_hi
-
_FillValue:
3.402823466e+38
-
units:
meters
-
contentType:
referenceInformation
-
long_name:
SDev of Signal Heights -High
-
description:
SDev of the heights of high-confidence signal photons
-
source:
ATL03 ATBD, Section 5
-
coordinates:
delta_time, latitude, longitude
/profile_1/dtime_fac1[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/dtime_fac1
-
_FillValue:
3.402823466e+38
-
units:
1
-
contentType:
modelResult
-
long_name:
dead_time_factor1
-
description:
Dead time correction factor for surface signal computed from radiometric lookup table.
-
source:
Atmosphere ATBD
-
coordinates:
delta_time, latitude, longitude
/profile_1/atm_tw_top[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/atm_tw_top
-
units:
meters
-
contentType:
referenceInformation
-
long_name:
Atmospheric Telemetry Window Top
-
description:
The geolocated ellipsoidal height at the top of the Atmospheric range window
-
source:
ATL03g ATBD
-
coordinates:
delta_time, latitude, longitude
/profile_1/sig_h_mean_hi[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/sig_h_mean_hi
-
contentType:
referenceInformation
-
long_name:
Mean of SignalHeights - High
-
description:
Mean height of high-confidence signal photons
-
source:
ATL03 ATBD, Section 5
-
coordinates:
delta_time, latitude, longitude
-
_FillValue:
3.402823466e+38
-
units:
meters
/profile_1/beam_azimuth[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/beam_azimuth
-
_FillValue:
3.402823466e+38
-
units:
degrees_east
-
contentType:
referenceInformation
-
long_name:
beam azimuth
-
description:
Beam azimuth
-
source:
ATL03 ATBD
-
coordinates:
delta_time, latitude, longitude
/profile_1/range_to_top[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/range_to_top
-
units:
meters
-
contentType:
referenceInformation
-
long_name:
Range
-
description:
Range from the spacecraft to the top of the atmosphere range window.
-
source:
Atmosphere ATBD
-
coordinates:
delta_time, latitude, longitude
/profile_1/solar_azimuth[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/solar_azimuth
-
units:
degrees_east
-
contentType:
referenceInformation
-
long_name:
solar azimuth
-
description:
The direction, eastwards from north, of the sun vector as seen by an observer at the laser ground spot.
-
source:
ATL03g ATBD
-
coordinates:
delta_time, latitude, longitude
/profile_1/longitude[
0
..20026]
(Type is Float64)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/longitude
-
units:
degrees_east
-
contentType:
referenceInformation
-
long_name:
Longitude of the ATM histogram
-
standard_name:
longitude
-
description:
Longitude at the the top of the ATM histogram, WGS84, East=+, derived from the geolocation of the ATM range window.
-
source:
ATL03g ATBD
-
coordinates:
delta_time, latitude
-
valid_min:
-180.
-
valid_max:
180.
/profile_1/backg_max_bin2[
0
..20026]
(Type is Int32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/backg_max_bin2
-
units:
counts
-
contentType:
modelResult
-
long_name:
Background max bin 2
-
description:
Background maximum bin2 from the selected method used. (Binmax2 Defined in Atmosphere ATBD section 2.3.2)
-
source:
Atmosphere ATBD section 3.3.4
-
coordinates:
delta_time, latitude, longitude
/profile_1/latitude[
0
..20026]
(Type is Float64)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/latitude
-
units:
degrees_north
-
contentType:
referenceInformation
-
long_name:
Latitude of the ATM histogram
-
standard_name:
latitude
-
description:
Latitude at the the top of the ATM histogram, WGS84, North=+, Derived from the geolocation of the ATM range window.
-
source:
ATL03g ATBD
-
coordinates:
delta_time, longitude
-
valid_min:
-90.
-
valid_max:
90.
/profile_1/surf_type[
0
..20026]
[
0
..4]
(Type is Int16)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/surf_type
-
units:
1
-
contentType:
referenceInformation
-
long_name:
Surface Type
-
description:
Flags describing which surface types this interval is associated with. 0=not type, 1=is type. Order of array is land, ocean, sea ice, land ice, inland water.
-
source:
ATL03 ATBD, Section 4
-
coordinates:
delta_time, latitude, longitude
-
flag_meanings:
not_type is_type
-
flag_values:
0, 1
-
valid_min:
0
-
valid_max:
1
/profile_1/atm_rw_width_m[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/atm_rw_width_m
-
units:
seconds
-
contentType:
referenceInformation
-
long_name:
Atmospheric Range Window Width
-
description:
The range, in meters, from the Atmospheric range window start to the range window stop.
-
source:
ATL02
-
coordinates:
delta_time, latitude, longitude
/profile_1/backg_method3[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/backg_method3
-
_FillValue:
3.402823466e+38
-
units:
1
-
contentType:
modelResult
-
long_name:
Background method 3
-
description:
Background from method 3 in photons/bin. (Defined in Atmosphere ATBD section 3.3.4)
-
source:
Atmosphere ATBD section 3.3.4
-
coordinates:
delta_time, latitude, longitude
/profile_1/surf_type_igbp[
0
..20026]
(Type is Int16)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/surf_type_igbp
-
units:
1
-
long_name:
IGBP Surface Type
-
description:
IGBP Surface Type
-
source:
Atmosphere ATBD, IGBP Surface Type
-
coordinates:
delta_time, latitude, longitude
-
contentType:
referenceInformation
/profile_1/sig_h_mean_med[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/sig_h_mean_med
-
_FillValue:
3.402823466e+38
-
units:
meters
-
contentType:
referenceInformation
-
long_name:
Mean of Signa Heightsl - Med
-
description:
Mean height of medium-confidence signal photons
-
source:
ATL03 ATBD, Section 5
-
coordinates:
delta_time, latitude, longitude
/profile_1/backg_signal_max1[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/backg_signal_max1
-
units:
counts
-
long_name:
Background signal max 1
-
description:
Background signal ma1x, in photons/bin, from the selectd method used. (Sm1 Defined in Atmosphere ATBD section 2.3.2)
-
source:
Atmosphere ATBD section 3.3.4
-
coordinates:
delta_time, latitude, longitude
-
contentType:
modelResult
/profile_1/dem_h[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/dem_h
-
_FillValue:
3.402823466e+38
-
units:
meters
-
contentType:
referenceInformation
-
long_name:
DEM Height
-
description:
Best available DEM (in priority of GIMP/GMTED/MSS) value at the geolocation point.
-
source:
Atmosphere ATBD
-
coordinates:
delta_time, latitude, longitude
/profile_1/tx_pulse_energy[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/tx_pulse_energy
-
units:
Joules
-
contentType:
referenceInformation
-
long_name:
Transmit Pulse Energy
-
description:
The average transmit pulse energy recorded by the Start Pulse Detector, split into per-beam measurements.
-
source:
ATL02 ATBD, Section 7.2
-
coordinates:
delta_time, latitude, longitude
/profile_1/surface_height[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/surface_height
-
_FillValue:
3.402823466e+38
-
units:
meters
-
contentType:
modelResult
-
long_name:
Surface height
-
description:
Height of the detected surface bin.
-
source:
Atmosphere ATBD section 3.3.5
-
coordinates:
delta_time, latitude, longitude
/profile_1/nrb_profile[
0
..20026]
[
0
..699]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/nrb_profile
-
_FillValue:
3.402823466e+38
-
units:
1
-
contentType:
modelResult
-
long_name:
NRB Profile
-
description:
Normalize relative backscatter (NRB) profile vertically aligned to 20 to -1 km with vertical resolution of 30 m. (Photons km2/Joule)
-
source:
Atmosphere ATBD section 2.3
-
coordinates:
delta_time, latitude, longitude
/profile_1/backg_mean2[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/backg_mean2
-
units:
counts
-
contentType:
modelResult
-
long_name:
Signal mean
-
description:
Signal mean from method 2 (pb2 defined in Atmosphere ATBD part 1 section 2.3.4)
-
source:
Atmosphere ATBD section 3.3.4
-
coordinates:
delta_time, latitude, longitude
/profile_1/prof_dist_y[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/prof_dist_y
-
units:
meters
-
contentType:
referenceInformation
-
long_name:
Across Track Distance from RGT
-
description:
Across-Track distance from the reference ground track.
-
source:
ATL03g ATBD, Section 3.4
-
coordinates:
delta_time, latitude, longitude
/profile_1/beam_elevation[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/beam_elevation
-
_FillValue:
3.402823466e+38
-
units:
degrees
-
contentType:
referenceInformation
-
long_name:
beam elevation
-
description:
Beam elevation
-
source:
ATL03 ATBD
-
coordinates:
delta_time, latitude, longitude
/profile_1/calibration/delta_time_end[
0
..0]
(Type is Float64)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/calibration/delta_time_end
-
units:
seconds since 2018-01-01
-
contentType:
modelResult
-
long_name:
Calibration interval end time
-
standard_name:
time
-
description:
Number of GPS seconds since the ATLAS SDP epoch where the cal interval ended. The corresponding start time of the interval is delta_time. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed.
-
source:
Atmosphere ATBD
-
coordinates:
delta_time, latitude, longitude
/profile_1/calibration/cal_ozone_trans[
0
..0]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/calibration/cal_ozone_trans
-
_FillValue:
3.402823466e+38
-
units:
1
-
contentType:
modelResult
-
long_name:
Ozone transmission used
-
description:
Ozone transmission term used to compute cal_const.
-
source:
Atmosphere ATBD
-
coordinates:
delta_time, latitude, longitude
/profile_1/calibration/cal_c_trans[
0
..0]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/calibration/cal_c_trans
-
_FillValue:
3.402823466e+38
-
units:
1
-
contentType:
modelResult
-
long_name:
total transmission used
-
description:
The total transmission used to compute cal_const.
-
source:
Atmosphere ATBD
-
coordinates:
delta_time, latitude, longitude
/profile_1/calibration/longitude[
0
..0]
(Type is Float64)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/calibration/longitude
-
units:
degrees_east
-
contentType:
modelResult
-
long_name:
Calibration interval start longitude
-
standard_name:
longitude
-
description:
Start Longitude of calibration interval.
-
source:
Atmosphere ATBD
-
coordinates:
delta_time, latitude
-
valid_min:
-180.
-
valid_max:
180.
/profile_1/calibration/latitude_end[
0
..0]
(Type is Float64)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/calibration/latitude_end
-
units:
degrees_north
-
contentType:
modelResult
-
long_name:
Calibration interval end latitude
-
description:
Stop Latitude of calibration interval.
-
source:
Atmosphere ATBD
-
coordinates:
delta_time, latitude, longitude
-
valid_min:
-90.
-
valid_max:
90.
/profile_1/calibration/latitude[
0
..0]
(Type is Float64)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/calibration/latitude
-
units:
degrees_north
-
long_name:
Calibration interval start Latitude
-
standard_name:
latitude
-
description:
Start Latitude of calibration interval.
-
source:
Atmosphere ATBD
-
coordinates:
delta_time, longitude
-
valid_min:
-90.
-
valid_max:
90.
-
contentType:
modelResult
/profile_1/calibration/cal_molec[
0
..0]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/calibration/cal_molec
-
_FillValue:
3.402823466e+38
-
units:
m-1 sr-1
-
contentType:
modelResult
-
long_name:
Molecular Backscatter used
-
description:
Molecular Backscatter value used to compute cal_const.
-
source:
Atmosphere ATBD
-
coordinates:
delta_time, latitude, longitude
/profile_1/calibration/cal_c[
0
..0]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/calibration/cal_c
-
_FillValue:
3.402823466e+38
-
units:
Photons*m^3 *sr / J
-
contentType:
modelResult
-
long_name:
Calculated Calibration constant
-
description:
Calculated calibration constant (one per beam, Defined by Atmosphere ATBD eqn 3.27)
-
source:
Atmosphere ATBD
-
coordinates:
delta_time, latitude, longitude
/profile_1/calibration/delta_time[
0
..0]
(Type is Float64)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/calibration/delta_time
-
units:
seconds since 2018-01-01
-
contentType:
modelResult
-
long_name:
Calibration interval start time
-
standard_name:
time
-
description:
Number of GPS seconds since the ATLAS SDP epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed.
-
source:
Derived via Time Tagging
-
coordinates:
latitude, longitude
-
CLASS:
DIMENSION_SCALE
/profile_1/calibration/cal_con[
0
..0]
(Type is Int32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/calibration/cal_con
-
_FillValue:
2147483647
-
units:
1
-
contentType:
modelResult
-
long_name:
Calibration Confidence
-
description:
Calibration Confidence
-
source:
Atmosphere ATBD
-
coordinates:
delta_time, latitude, longitude
/profile_1/calibration/cal_nrb[
0
..0]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/calibration/cal_nrb
-
_FillValue:
3.402823466e+38
-
units:
1
-
contentType:
modelResult
-
long_name:
NRB value used
-
description:
NRB value used to compute cal_const.
-
source:
Atmosphere ATBD
-
coordinates:
delta_time, latitude, longitude
/profile_1/calibration/longitude_end[
0
..0]
(Type is Float64)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/calibration/longitude_end
-
units:
degrees_east
-
contentType:
modelResult
-
long_name:
Calibration interval end longitude
-
description:
Stop Longitude of calibration interval.
-
source:
Atmosphere ATBD
-
coordinates:
delta_time, latitude, longitude
-
valid_min:
-180.
-
valid_max:
180.
/profile_1/segment_id[
0
..20026]
(Type is Int32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/segment_id
-
units:
1
-
contentType:
referenceInformation
-
long_name:
along-track segment ID number.
-
description:
A 7 digit number identifiying the along-track geolocation segment number. These are sequential, starting with 1 for the first segment after an ascending equatorial crossing node.
-
source:
ATL03 ATBD, Section 3.1
-
coordinates:
delta_time, latitude, longitude
/profile_1/surface_bin[
0
..20026]
(Type is Int32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/surface_bin
-
_FillValue:
2147483647
-
units:
1
-
contentType:
modelResult
-
long_name:
Surface bin
-
description:
Vertially aligned, NRB bin number of the detected surface return.
-
source:
Atmosphere ATBD section 3.3.5
-
coordinates:
delta_time, latitude, longitude
/profile_1/solar_elevation[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/solar_elevation
-
units:
degrees
-
contentType:
referenceInformation
-
long_name:
solar elevation
-
description:
Solar Angle above or below the plane tangent to the ellipsoid surface at the laser spot. Positive values mean the sun is above the horizon, while negative values mean it is below the horizon. The effect of atmospheric refraction is not included. This is a low precision value, with approximately TBD degree accuracy.
-
source:
ATL03g ATBD
-
coordinates:
delta_time, latitude, longitude
/profile_1/sig_count_hi[
0
..20026]
(Type is Int32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/sig_count_hi
-
units:
counts
-
contentType:
referenceInformation
-
long_name:
Count of Signa Heightsl - High
-
description:
Count of high-confidence signal photons
-
source:
ATL03 ATBD, Section 5
-
coordinates:
delta_time, latitude, longitude
/profile_1/dtime_fac2[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/dtime_fac2
-
_FillValue:
3.402823466e+38
-
units:
1
-
contentType:
modelResult
-
long_name:
dead_time_factor2
-
description:
Dead time correction factor for surface signal computed from ATBD equation 2.1.
-
source:
Atmosphere ATBD
-
coordinates:
delta_time, latitude, longitude
/profile_1/prof_dist_x[
0
..20026]
(Type is Float64)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/prof_dist_x
-
units:
meters
-
contentType:
referenceInformation
-
long_name:
Along Track Distance
-
description:
Along-track distance from the equator crossing.
-
source:
ATL03g ATBD, Section 3.4
-
coordinates:
delta_time, latitude, longitude
/profile_1/delta_time[
0
..20026]
(Type is Float64)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/delta_time
-
units:
seconds since 2018-01-01
-
contentType:
modelResult
-
long_name:
Elapsed GPS seconds
-
standard_name:
time
-
description:
Number of GPS seconds since the ATLAS SDP epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed.
-
source:
Atmosphere ATBD
-
coordinates:
latitude, longitude
-
CLASS:
DIMENSION_SCALE
/profile_1/backg_std_dev2[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/backg_std_dev2
-
units:
counts
-
contentType:
modelResult
-
long_name:
Background standard deviation 2
-
description:
Background standard deviation from the selected method used (Sstd2 Defined in Atmosphere ATBD section 2.3.2)
-
source:
Atmosphere ATBD section 3.3.4
-
coordinates:
delta_time, latitude, longitude
/profile_1/backg_method2[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/backg_method2
-
units:
counts
-
contentType:
modelResult
-
long_name:
Background method 2
-
description:
Background from method 2 in photons/bin. (pb2 Defined in Atmosphere ATBD section 2.3.2)
-
source:
Atmosphere ATBD section 3.3.4
-
coordinates:
delta_time, latitude, longitude
/profile_1/pce_mframe_cnt[
0
..20026]
(Type is UInt32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/pce_mframe_cnt
-
units:
counts
-
contentType:
referenceInformation
-
long_name:
PCE Major frame counter
-
description:
Major Frame Counter - The major frame counter is read from the DFC and starts counting at DFC POR. The counter is used to identify individual major frames across diag and science packets. This counter can go for about 2.7 years before rolling over. It is in the first time tag science packet. Used as part of the photon ID
-
source:
ATL02
-
coordinates:
delta_time, latitude, longitude
/profile_1/sc_alt[
0
..20026]
(Type is Float64)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/sc_alt
-
units:
meters
-
contentType:
physicalMeasurement
-
long_name:
Altitude
-
description:
Height of the spacecraft above the WGS84 ellipsoid.
-
source:
ATL03g ATBD, Section 3.4
-
coordinates:
delta_time, latitude, longitude
/profile_1/sig_h_sdev_low[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/sig_h_sdev_low
-
_FillValue:
3.402823466e+38
-
units:
meters
-
contentType:
referenceInformation
-
long_name:
SDev of Signal Heights -Low
-
description:
SDev of the heights of low-confidence signal photons
-
source:
ATL03 ATBD, Section 5
-
coordinates:
delta_time, latitude, longitude
/profile_1/sig_h_mean_low[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/sig_h_mean_low
-
_FillValue:
3.402823466e+38
-
units:
meters
-
contentType:
referenceInformation
-
long_name:
Mean of Signal Heights - Low
-
description:
Mean height of low-confidence signal photons
-
source:
ATL03 ATBD, Section 5
-
coordinates:
delta_time, latitude, longitude
/profile_1/sig_h_sdev_med[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/sig_h_sdev_med
-
_FillValue:
3.402823466e+38
-
units:
meters
-
contentType:
referenceInformation
-
long_name:
SDev of Signa Heights -Med
-
description:
SDev of the heights of medium-confidence signal photons
-
source:
ATL03 ATBD, Section 5
-
coordinates:
delta_time, latitude, longitude
/profile_1/nrb_bot_bin[
0
..20026]
(Type is Int32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/nrb_bot_bin
-
_FillValue:
2147483647
-
units:
1
-
contentType:
modelResult
-
long_name:
NRB Profile bottom valid bin
-
description:
The ending (bottom) bin number within the 20 to -1 km vertically aligned profile where data are valid. Bin number starts at 1.
-
source:
Atmosphere ATBD section 2.3
-
coordinates:
delta_time, latitude, longitude
/profile_1/surface_sig[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/surface_sig
-
units:
counts
-
contentType:
modelResult
-
long_name:
Surface signal count
-
description:
Number of photons in the detected surface bin.
-
source:
Atmosphere ATBD section 3.3.5
-
coordinates:
delta_time, latitude, longitude
/profile_1/nrb_top_bin[
0
..20026]
(Type is Int32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_1/nrb_top_bin
-
_FillValue:
2147483647
-
units:
counts
-
contentType:
modelResult
-
long_name:
NRB Profile top valid bin
-
description:
The starting (top) bin number within the 20 to -1 km vertically aligned profile where data are valid. Bin number starts at 1.
-
source:
Atmosphere ATBD section 2.3
-
coordinates:
delta_time, latitude, longitude
/ds_surf_type[
0
..4]
(Type is Int32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ds_surf_type
-
units:
1
-
contentType:
auxiliaryInformation
-
long_name:
Surface Type Dimension Scale
-
description:
Dimension scale indexing the surface type array. Index=1 corresponds to Land; index = 2 corresponds to Ocean; Index = 3 corresponds to SeaIce; Index=4 corresponds to LandIce; Index=5 corresponds to InlandWater
-
flag_meanings:
land ocean seaice landice inland_water
-
flag_values:
1, 2, 3, 4, 5
-
valid_min:
1
-
valid_max:
5
-
CLASS:
DIMENSION_SCALE
-
NAME:
/ds_surf_type
/profile_3/backg_signal_max2[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/backg_signal_max2
-
units:
counts
-
contentType:
modelResult
-
long_name:
Background signal max 2
-
description:
Background signal max2, in photons/bin, from the selectd method used. (Sm2 Defined in Atmosphere ATBD section 2.3.2)
-
source:
Atmosphere ATBD section 3.3.4
-
coordinates:
delta_time, latitude, longitude
/profile_3/sig_count_med[
0
..20026]
(Type is Int32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/sig_count_med
-
units:
counts
-
contentType:
referenceInformation
-
long_name:
Count of Signal Heights - Medium
-
description:
Count of medium-confidence signal photons
-
source:
ATL03 ATBD, Section 5
-
coordinates:
delta_time, latitude, longitude
/profile_3/backg_std_dev1[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/backg_std_dev1
-
units:
counts
-
contentType:
modelResult
-
long_name:
Background standard deviation 1
-
description:
Background standard deviation from the selected method used (Sstd1 Defined in Atmosphere ATBD section 2.3.2)
-
source:
Atmosphere ATBD section 3.3.4
-
coordinates:
delta_time, latitude, longitude
/profile_3/dem_flag[
0
..20026]
(Type is Int16)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/dem_flag
-
_FillValue:
127
-
units:
1
-
contentType:
referenceInformation
-
long_name:
DEM Source Flag
-
description:
Indicates source of the DEM height. Values: 0=None, 1=GIMP, 2=GMTED, 3=MSS.
-
source:
Atmosphere ATBD
-
coordinates:
delta_time, latitude, longitude
-
flag_meanings:
none gimp gmted mss
-
flag_values:
0, 1, 2, 3
-
valid_min:
0
-
valid_max:
3
/profile_3/backg_max_bin1[
0
..20026]
(Type is Int32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/backg_max_bin1
-
units:
counts
-
contentType:
modelResult
-
long_name:
Background max bin 1
-
description:
Background maximum bin from the selected method used. (Binmax1 Defined in Atmosphere ATBD section 2.3.2)
-
source:
Atmosphere ATBD section 3.3.4
-
coordinates:
delta_time, latitude, longitude
/profile_3/bckgrd_atlas/bckgrd_counts_reduced[
0
..160207]
(Type is Int32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/bckgrd_atlas/bckgrd_counts_reduced
-
units:
counts
-
long_name:
ATLAS 50-shot background count - reduced
-
description:
Number of photon counts in the 50-shot sum after subtracting the number of signal photon events, defined as in ATBD Section 5, in that span.
-
source:
ATL03 ATBD Section 7.3
-
coordinates:
delta_time
-
contentType:
modelResult
/profile_3/bckgrd_atlas/bckgrd_counts[
0
..160207]
(Type is Int32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/bckgrd_atlas/bckgrd_counts
-
units:
counts
-
contentType:
modelResult
-
long_name:
ATLAS 50-shot background count
-
description:
Onboard 50 shot background (200 Hz) sum of photon events within the altimetric range window.
-
source:
ATL03 ATBD Section 7.3
-
coordinates:
delta_time
/profile_3/bckgrd_atlas/delta_time[
0
..160207]
(Type is Float64)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/bckgrd_atlas/delta_time
-
units:
seconds since 2018-01-01
-
contentType:
modelResult
-
long_name:
Elapsed GPS seconds
-
standard_name:
time
-
description:
Number of GPS seconds since the ATLAS SDP epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed.
-
source:
Derived via Time Tagging
-
coordinates:
delta_time
-
CLASS:
DIMENSION_SCALE
-
NAME:
profile_3/bckgrd_atlas/delta_time
/profile_3/bckgrd_atlas/bckgrd_hist_top[
0
..160207]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/bckgrd_atlas/bckgrd_hist_top
-
units:
meters
-
contentType:
modelResult
-
long_name:
Top of the altimetric range window
-
description:
The height of the top of the altimetric histogram, in meters above the WGS-84 ellipsoid, with all geophysical corrections applied. Parameter is ingested at 50-Hz, and values are repeated to form a 200-Hz array.
-
source:
ATL03 ATBD Section 7.3
-
coordinates:
delta_time
/profile_3/bckgrd_atlas/bckgrd_int_height[
0
..160207]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/bckgrd_atlas/bckgrd_int_height
-
units:
meters
-
contentType:
modelResult
-
long_name:
Altimetric range window width
-
description:
The height of the altimetric range window. This is the height over which the 50-shot sum is generated. Parameter is ingested at 50-Hz, and values are repeated to form a 200-Hz array.
-
source:
ATL03 ATBD Section 7.3
-
coordinates:
delta_time
/profile_3/bckgrd_atlas/bckgrd_int_height_reduced[
0
..160207]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/bckgrd_atlas/bckgrd_int_height_reduced
-
units:
meters
-
contentType:
modelResult
-
long_name:
Altimetric range window height - reduced
-
description:
The height of the altimetric range window after subtracting the height span of the signal photon events in the 50-shot span.
-
source:
ATL03 ATBD Section 7.3
-
coordinates:
delta_time
/profile_3/bckgrd_atlas/bckgrd_rate[
0
..160207]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/bckgrd_atlas/bckgrd_rate
-
units:
counts / second
-
contentType:
modelResult
-
long_name:
Background count rate based on the ATLAS 50-shot sum
-
description:
The background count rate from the 50-shot altimetric histogram after removing the number of likely signal photons based on Section 5.
-
source:
ATL03 ATBD Section 7.3
-
coordinates:
delta_time
/profile_3/bckgrd_atlas/pce_mframe_cnt[
0
..160207]
(Type is UInt32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/bckgrd_atlas/pce_mframe_cnt
-
units:
counts
-
contentType:
referenceInformation
-
long_name:
PCE Major frame counter
-
description:
Major Frame ID - The major frame ID is read from the DFC and starts counting at DFC POR. The counter is used to identify individual major frames across diag and science packets. This counter can go for about 2.7 years before rolling over. It is in the first time tag science packet. Used as part of the photon ID
-
source:
ATL02
-
coordinates:
delta_time
/profile_3/sig_count_low[
0
..20026]
(Type is Int32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/sig_count_low
-
units:
counts
-
contentType:
referenceInformation
-
long_name:
Count of Signal Heights - Low
-
description:
Count of low-confidence signal photons
-
source:
ATL03 ATBD, Section 5
-
coordinates:
delta_time, latitude, longitude
/profile_3/backg_method1[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/backg_method1
-
units:
counts
-
contentType:
modelResult
-
long_name:
Background method 1
-
description:
Background from method 1in photons/bin. (pb1 Defined in Atmosphere ATBD section 2.3.2)
-
source:
Atmosphere ATBD section 3.3.4
-
coordinates:
delta_time, latitude, longitude
/profile_3/sig_h_sdev_hi[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/sig_h_sdev_hi
-
_FillValue:
3.402823466e+38
-
units:
meters
-
contentType:
referenceInformation
-
long_name:
SDev of Signal Heights -High
-
description:
SDev of the heights of high-confidence signal photons
-
source:
ATL03 ATBD, Section 5
-
coordinates:
delta_time, latitude, longitude
/profile_3/dtime_fac1[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/dtime_fac1
-
_FillValue:
3.402823466e+38
-
units:
1
-
contentType:
modelResult
-
long_name:
dead_time_factor1
-
description:
Dead time correction factor for surface signal computed from radiometric lookup table.
-
source:
Atmosphere ATBD
-
coordinates:
delta_time, latitude, longitude
/profile_3/atm_tw_top[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/atm_tw_top
-
units:
meters
-
contentType:
referenceInformation
-
long_name:
Atmospheric Telemetry Window Top
-
description:
The geolocated ellipsoidal height at the top of the Atmospheric range window
-
source:
ATL03g ATBD
-
coordinates:
delta_time, latitude, longitude
/profile_3/sig_h_mean_hi[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/sig_h_mean_hi
-
contentType:
referenceInformation
-
long_name:
Mean of SignalHeights - High
-
description:
Mean height of high-confidence signal photons
-
source:
ATL03 ATBD, Section 5
-
coordinates:
delta_time, latitude, longitude
-
_FillValue:
3.402823466e+38
-
units:
meters
/profile_3/beam_azimuth[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/beam_azimuth
-
_FillValue:
3.402823466e+38
-
units:
degrees_east
-
contentType:
referenceInformation
-
long_name:
beam azimuth
-
description:
Beam azimuth
-
source:
ATL03 ATBD
-
coordinates:
delta_time, latitude, longitude
/profile_3/range_to_top[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/range_to_top
-
units:
meters
-
contentType:
referenceInformation
-
long_name:
Range
-
description:
Range from the spacecraft to the top of the atmosphere range window.
-
source:
Atmosphere ATBD
-
coordinates:
delta_time, latitude, longitude
/profile_3/solar_azimuth[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/solar_azimuth
-
units:
degrees_east
-
contentType:
referenceInformation
-
long_name:
solar azimuth
-
description:
The direction, eastwards from north, of the sun vector as seen by an observer at the laser ground spot.
-
source:
ATL03g ATBD
-
coordinates:
delta_time, latitude, longitude
/profile_3/longitude[
0
..20026]
(Type is Float64)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/longitude
-
units:
degrees_east
-
contentType:
referenceInformation
-
long_name:
Longitude of the ATM histogram
-
standard_name:
longitude
-
description:
Longitude at the the top of the ATM histogram, WGS84, East=+, derived from the geolocation of the ATM range window.
-
source:
ATL03g ATBD
-
coordinates:
delta_time, latitude
-
valid_min:
-180.
-
valid_max:
180.
/profile_3/backg_max_bin2[
0
..20026]
(Type is Int32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/backg_max_bin2
-
units:
counts
-
contentType:
modelResult
-
long_name:
Background max bin 2
-
description:
Background maximum bin2 from the selected method used. (Binmax2 Defined in Atmosphere ATBD section 2.3.2)
-
source:
Atmosphere ATBD section 3.3.4
-
coordinates:
delta_time, latitude, longitude
/profile_3/latitude[
0
..20026]
(Type is Float64)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/latitude
-
units:
degrees_north
-
contentType:
referenceInformation
-
long_name:
Latitude of the ATM histogram
-
standard_name:
latitude
-
description:
Latitude at the the top of the ATM histogram, WGS84, North=+, Derived from the geolocation of the ATM range window.
-
source:
ATL03g ATBD
-
coordinates:
delta_time, longitude
-
valid_min:
-90.
-
valid_max:
90.
/profile_3/surf_type[
0
..20026]
[
0
..4]
(Type is Int16)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/surf_type
-
units:
1
-
contentType:
referenceInformation
-
long_name:
Surface Type
-
description:
Flags describing which surface types this interval is associated with. 0=not type, 1=is type. Order of array is land, ocean, sea ice, land ice, inland water.
-
source:
ATL03 ATBD, Section 4
-
coordinates:
delta_time, latitude, longitude
-
flag_meanings:
not_type is_type
-
flag_values:
0, 1
-
valid_min:
0
-
valid_max:
1
/profile_3/atm_rw_width_m[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/atm_rw_width_m
-
units:
seconds
-
contentType:
referenceInformation
-
long_name:
Atmospheric Range Window Width
-
description:
The range, in meters, from the Atmospheric range window start to the range window stop.
-
source:
ATL02
-
coordinates:
delta_time, latitude, longitude
/profile_3/backg_method3[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/backg_method3
-
_FillValue:
3.402823466e+38
-
units:
1
-
contentType:
modelResult
-
long_name:
Background method 3
-
description:
Background from method 3 in photons/bin. (Defined in Atmosphere ATBD section 3.3.4)
-
source:
Atmosphere ATBD section 3.3.4
-
coordinates:
delta_time, latitude, longitude
/profile_3/surf_type_igbp[
0
..20026]
(Type is Int16)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/surf_type_igbp
-
units:
1
-
long_name:
IGBP Surface Type
-
description:
IGBP Surface Type
-
source:
Atmosphere ATBD, IGBP Surface Type
-
coordinates:
delta_time, latitude, longitude
-
contentType:
referenceInformation
/profile_3/sig_h_mean_med[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/sig_h_mean_med
-
_FillValue:
3.402823466e+38
-
units:
meters
-
contentType:
referenceInformation
-
long_name:
Mean of Signa Heightsl - Med
-
description:
Mean height of medium-confidence signal photons
-
source:
ATL03 ATBD, Section 5
-
coordinates:
delta_time, latitude, longitude
/profile_3/backg_signal_max1[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/backg_signal_max1
-
units:
counts
-
long_name:
Background signal max 1
-
description:
Background signal ma1x, in photons/bin, from the selectd method used. (Sm1 Defined in Atmosphere ATBD section 2.3.2)
-
source:
Atmosphere ATBD section 3.3.4
-
coordinates:
delta_time, latitude, longitude
-
contentType:
modelResult
/profile_3/dem_h[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/dem_h
-
_FillValue:
3.402823466e+38
-
units:
meters
-
contentType:
referenceInformation
-
long_name:
DEM Height
-
description:
Best available DEM (in priority of GIMP/GMTED/MSS) value at the geolocation point.
-
source:
Atmosphere ATBD
-
coordinates:
delta_time, latitude, longitude
/profile_3/tx_pulse_energy[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/tx_pulse_energy
-
units:
Joules
-
contentType:
referenceInformation
-
long_name:
Transmit Pulse Energy
-
description:
The average transmit pulse energy recorded by the Start Pulse Detector, split into per-beam measurements.
-
source:
ATL02 ATBD, Section 7.2
-
coordinates:
delta_time, latitude, longitude
/profile_3/surface_height[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/surface_height
-
_FillValue:
3.402823466e+38
-
units:
meters
-
contentType:
modelResult
-
long_name:
Surface height
-
description:
Height of the detected surface bin.
-
source:
Atmosphere ATBD section 3.3.5
-
coordinates:
delta_time, latitude, longitude
/profile_3/nrb_profile[
0
..20026]
[
0
..699]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/nrb_profile
-
_FillValue:
3.402823466e+38
-
units:
1
-
contentType:
modelResult
-
long_name:
NRB Profile
-
description:
Normalize relative backscatter (NRB) profile vertically aligned to 20 to -1 km with vertical resolution of 30 m. (Photons km2/Joule)
-
source:
Atmosphere ATBD section 2.3
-
coordinates:
delta_time, latitude, longitude
/profile_3/backg_mean2[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/backg_mean2
-
units:
counts
-
contentType:
modelResult
-
long_name:
Signal mean
-
description:
Signal mean from method 2 (pb2 defined in Atmosphere ATBD part 1 section 2.3.4)
-
source:
Atmosphere ATBD section 3.3.4
-
coordinates:
delta_time, latitude, longitude
/profile_3/prof_dist_y[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/prof_dist_y
-
units:
meters
-
contentType:
referenceInformation
-
long_name:
Across Track Distance from RGT
-
description:
Across-Track distance from the reference ground track.
-
source:
ATL03g ATBD, Section 3.4
-
coordinates:
delta_time, latitude, longitude
/profile_3/beam_elevation[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/beam_elevation
-
_FillValue:
3.402823466e+38
-
units:
degrees
-
contentType:
referenceInformation
-
long_name:
beam elevation
-
description:
Beam elevation
-
source:
ATL03 ATBD
-
coordinates:
delta_time, latitude, longitude
/profile_3/calibration/delta_time_end[
0
..0]
(Type is Float64)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/calibration/delta_time_end
-
units:
seconds since 2018-01-01
-
contentType:
modelResult
-
long_name:
Calibration interval end time
-
standard_name:
time
-
description:
Number of GPS seconds since the ATLAS SDP epoch where the cal interval ended. The corresponding start time of the interval is delta_time. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed.
-
source:
Atmosphere ATBD
-
coordinates:
delta_time, latitude, longitude
/profile_3/calibration/cal_ozone_trans[
0
..0]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/calibration/cal_ozone_trans
-
_FillValue:
3.402823466e+38
-
units:
1
-
contentType:
modelResult
-
long_name:
Ozone transmission used
-
description:
Ozone transmission term used to compute cal_const.
-
source:
Atmosphere ATBD
-
coordinates:
delta_time, latitude, longitude
/profile_3/calibration/cal_c_trans[
0
..0]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/calibration/cal_c_trans
-
_FillValue:
3.402823466e+38
-
units:
1
-
contentType:
modelResult
-
long_name:
total transmission used
-
description:
The total transmission used to compute cal_const.
-
source:
Atmosphere ATBD
-
coordinates:
delta_time, latitude, longitude
/profile_3/calibration/longitude[
0
..0]
(Type is Float64)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/calibration/longitude
-
units:
degrees_east
-
contentType:
modelResult
-
long_name:
Calibration interval start longitude
-
standard_name:
longitude
-
description:
Start Longitude of calibration interval.
-
source:
Atmosphere ATBD
-
coordinates:
delta_time, latitude
-
valid_min:
-180.
-
valid_max:
180.
/profile_3/calibration/latitude_end[
0
..0]
(Type is Float64)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/calibration/latitude_end
-
units:
degrees_north
-
contentType:
modelResult
-
long_name:
Calibration interval end latitude
-
description:
Stop Latitude of calibration interval.
-
source:
Atmosphere ATBD
-
coordinates:
delta_time, latitude, longitude
-
valid_min:
-90.
-
valid_max:
90.
/profile_3/calibration/latitude[
0
..0]
(Type is Float64)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/calibration/latitude
-
units:
degrees_north
-
long_name:
Calibration interval start Latitude
-
standard_name:
latitude
-
description:
Start Latitude of calibration interval.
-
source:
Atmosphere ATBD
-
coordinates:
delta_time, longitude
-
valid_min:
-90.
-
valid_max:
90.
-
contentType:
modelResult
/profile_3/calibration/cal_molec[
0
..0]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/calibration/cal_molec
-
_FillValue:
3.402823466e+38
-
units:
m-1 sr-1
-
contentType:
modelResult
-
long_name:
Molecular Backscatter used
-
description:
Molecular Backscatter value used to compute cal_const.
-
source:
Atmosphere ATBD
-
coordinates:
delta_time, latitude, longitude
/profile_3/calibration/cal_c[
0
..0]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/calibration/cal_c
-
_FillValue:
3.402823466e+38
-
units:
Photons*m^3 *sr / J
-
contentType:
modelResult
-
long_name:
Calculated Calibration constant
-
description:
Calculated calibration constant (one per beam, Defined by Atmosphere ATBD eqn 3.27)
-
source:
Atmosphere ATBD
-
coordinates:
delta_time, latitude, longitude
/profile_3/calibration/delta_time[
0
..0]
(Type is Float64)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/calibration/delta_time
-
units:
seconds since 2018-01-01
-
contentType:
modelResult
-
long_name:
Calibration interval start time
-
standard_name:
time
-
description:
Number of GPS seconds since the ATLAS SDP epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed.
-
source:
Derived via Time Tagging
-
coordinates:
latitude, longitude
-
CLASS:
DIMENSION_SCALE
/profile_3/calibration/cal_con[
0
..0]
(Type is Int32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/calibration/cal_con
-
_FillValue:
2147483647
-
units:
1
-
contentType:
modelResult
-
long_name:
Calibration Confidence
-
description:
Calibration Confidence
-
source:
Atmosphere ATBD
-
coordinates:
delta_time, latitude, longitude
/profile_3/calibration/cal_nrb[
0
..0]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/calibration/cal_nrb
-
_FillValue:
3.402823466e+38
-
units:
1
-
contentType:
modelResult
-
long_name:
NRB value used
-
description:
NRB value used to compute cal_const.
-
source:
Atmosphere ATBD
-
coordinates:
delta_time, latitude, longitude
/profile_3/calibration/longitude_end[
0
..0]
(Type is Float64)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/calibration/longitude_end
-
units:
degrees_east
-
contentType:
modelResult
-
long_name:
Calibration interval end longitude
-
description:
Stop Longitude of calibration interval.
-
source:
Atmosphere ATBD
-
coordinates:
delta_time, latitude, longitude
-
valid_min:
-180.
-
valid_max:
180.
/profile_3/segment_id[
0
..20026]
(Type is Int32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/segment_id
-
units:
1
-
contentType:
referenceInformation
-
long_name:
along-track segment ID number.
-
description:
A 7 digit number identifiying the along-track geolocation segment number. These are sequential, starting with 1 for the first segment after an ascending equatorial crossing node.
-
source:
ATL03 ATBD, Section 3.1
-
coordinates:
delta_time, latitude, longitude
/profile_3/surface_bin[
0
..20026]
(Type is Int32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/surface_bin
-
_FillValue:
2147483647
-
units:
1
-
contentType:
modelResult
-
long_name:
Surface bin
-
description:
Vertially aligned, NRB bin number of the detected surface return.
-
source:
Atmosphere ATBD section 3.3.5
-
coordinates:
delta_time, latitude, longitude
/profile_3/solar_elevation[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/solar_elevation
-
units:
degrees
-
contentType:
referenceInformation
-
long_name:
solar elevation
-
description:
Solar Angle above or below the plane tangent to the ellipsoid surface at the laser spot. Positive values mean the sun is above the horizon, while negative values mean it is below the horizon. The effect of atmospheric refraction is not included. This is a low precision value, with approximately TBD degree accuracy.
-
source:
ATL03g ATBD
-
coordinates:
delta_time, latitude, longitude
/profile_3/sig_count_hi[
0
..20026]
(Type is Int32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/sig_count_hi
-
units:
counts
-
contentType:
referenceInformation
-
long_name:
Count of Signa Heightsl - High
-
description:
Count of high-confidence signal photons
-
source:
ATL03 ATBD, Section 5
-
coordinates:
delta_time, latitude, longitude
/profile_3/dtime_fac2[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/dtime_fac2
-
_FillValue:
3.402823466e+38
-
units:
1
-
contentType:
modelResult
-
long_name:
dead_time_factor2
-
description:
Dead time correction factor for surface signal computed from ATBD equation 2.1.
-
source:
Atmosphere ATBD
-
coordinates:
delta_time, latitude, longitude
/profile_3/prof_dist_x[
0
..20026]
(Type is Float64)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/prof_dist_x
-
units:
meters
-
contentType:
referenceInformation
-
long_name:
Along Track Distance
-
description:
Along-track distance from the equator crossing.
-
source:
ATL03g ATBD, Section 3.4
-
coordinates:
delta_time, latitude, longitude
/profile_3/delta_time[
0
..20026]
(Type is Float64)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/delta_time
-
units:
seconds since 2018-01-01
-
contentType:
modelResult
-
long_name:
Elapsed GPS seconds
-
standard_name:
time
-
description:
Number of GPS seconds since the ATLAS SDP epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed.
-
source:
Atmosphere ATBD
-
coordinates:
latitude, longitude
-
CLASS:
DIMENSION_SCALE
/profile_3/backg_std_dev2[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/backg_std_dev2
-
units:
counts
-
contentType:
modelResult
-
long_name:
Background standard deviation 2
-
description:
Background standard deviation from the selected method used (Sstd2 Defined in Atmosphere ATBD section 2.3.2)
-
source:
Atmosphere ATBD section 3.3.4
-
coordinates:
delta_time, latitude, longitude
/profile_3/backg_method2[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/backg_method2
-
units:
counts
-
contentType:
modelResult
-
long_name:
Background method 2
-
description:
Background from method 2 in photons/bin. (pb2 Defined in Atmosphere ATBD section 2.3.2)
-
source:
Atmosphere ATBD section 3.3.4
-
coordinates:
delta_time, latitude, longitude
/profile_3/pce_mframe_cnt[
0
..20026]
(Type is UInt32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/pce_mframe_cnt
-
units:
counts
-
contentType:
referenceInformation
-
long_name:
PCE Major frame counter
-
description:
Major Frame Counter - The major frame counter is read from the DFC and starts counting at DFC POR. The counter is used to identify individual major frames across diag and science packets. This counter can go for about 2.7 years before rolling over. It is in the first time tag science packet. Used as part of the photon ID
-
source:
ATL02
-
coordinates:
delta_time, latitude, longitude
/profile_3/sc_alt[
0
..20026]
(Type is Float64)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/sc_alt
-
units:
meters
-
contentType:
physicalMeasurement
-
long_name:
Altitude
-
description:
Height of the spacecraft above the WGS84 ellipsoid.
-
source:
ATL03g ATBD, Section 3.4
-
coordinates:
delta_time, latitude, longitude
/profile_3/sig_h_sdev_low[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/sig_h_sdev_low
-
_FillValue:
3.402823466e+38
-
units:
meters
-
contentType:
referenceInformation
-
long_name:
SDev of Signal Heights -Low
-
description:
SDev of the heights of low-confidence signal photons
-
source:
ATL03 ATBD, Section 5
-
coordinates:
delta_time, latitude, longitude
/profile_3/sig_h_mean_low[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/sig_h_mean_low
-
_FillValue:
3.402823466e+38
-
units:
meters
-
contentType:
referenceInformation
-
long_name:
Mean of Signal Heights - Low
-
description:
Mean height of low-confidence signal photons
-
source:
ATL03 ATBD, Section 5
-
coordinates:
delta_time, latitude, longitude
/profile_3/sig_h_sdev_med[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/sig_h_sdev_med
-
_FillValue:
3.402823466e+38
-
units:
meters
-
contentType:
referenceInformation
-
long_name:
SDev of Signa Heights -Med
-
description:
SDev of the heights of medium-confidence signal photons
-
source:
ATL03 ATBD, Section 5
-
coordinates:
delta_time, latitude, longitude
/profile_3/nrb_bot_bin[
0
..20026]
(Type is Int32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/nrb_bot_bin
-
_FillValue:
2147483647
-
units:
1
-
contentType:
modelResult
-
long_name:
NRB Profile bottom valid bin
-
description:
The ending (bottom) bin number within the 20 to -1 km vertically aligned profile where data are valid. Bin number starts at 1.
-
source:
Atmosphere ATBD section 2.3
-
coordinates:
delta_time, latitude, longitude
/profile_3/surface_sig[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/surface_sig
-
units:
counts
-
contentType:
modelResult
-
long_name:
Surface signal count
-
description:
Number of photons in the detected surface bin.
-
source:
Atmosphere ATBD section 3.3.5
-
coordinates:
delta_time, latitude, longitude
/profile_3/nrb_top_bin[
0
..20026]
(Type is Int32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_3/nrb_top_bin
-
_FillValue:
2147483647
-
units:
counts
-
contentType:
modelResult
-
long_name:
NRB Profile top valid bin
-
description:
The starting (top) bin number within the 20 to -1 km vertically aligned profile where data are valid. Bin number starts at 1.
-
source:
Atmosphere ATBD section 2.3
-
coordinates:
delta_time, latitude, longitude
/quality_assessment/qa_granule_fail_reason[
0
..0]
(Type is Int32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/quality_assessment/qa_granule_fail_reason
-
units:
1
-
contentType:
qualityInformation
-
description:
Flag indicating granule failure reason. 0=no failure; 1=processing error; 2=Insufficient output data was generated; 3=TBD Failure; 4=TBD_Failure; 5=other failure.
-
source:
Operations
-
flag_meanings:
no_failure PROCESS_ERROR INSUFFICIENT_OUTPUT failure_3 failure_4 OTHER_FAILURE
-
flag_values:
0, 1, 2, 3, 4, 5
-
valid_min:
0
-
valid_max:
5
-
long_name:
Granule Failure Reason
/quality_assessment/qa_granule_pass_fail[
0
..0]
(Type is Int32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/quality_assessment/qa_granule_pass_fail
-
units:
1
-
contentType:
qualityInformation
-
description:
Flag indicating granule quality. 0=granule passes automatic QA. 1=granule fails automatic QA.
-
source:
Operations
-
flag_meanings:
PASS FAIL
-
flag_values:
0, 1
-
valid_min:
0
-
valid_max:
1
-
long_name:
Granule Pass Flag
/meteorology_molec_bkscat/met_tropt[
0
..801]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/meteorology_molec_bkscat/met_tropt
-
units:
K
-
contentType:
referenceInformation
-
long_name:
blended_tropopause_temperature
-
standard_name:
temperature
-
description:
Tropopause temperature (k)
-
source:
GEOS5 FPIT 2D DFPITT1NXSLV
-
coordinates:
delta_time, latitude, longitude
/meteorology_molec_bkscat/mol_backs_folded[
0
..801]
[
0
..699]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/meteorology_molec_bkscat/mol_backs_folded
-
units:
m-1 sr-1
-
contentType:
modelResult
-
long_name:
Folded molecular transmission profile
-
description:
Folded molecular transmission profile, 30 m resolution, , m-1 sr-1; 20 km to -1 km (equation 3.17)
-
source:
Atmosphere ATBD
-
coordinates:
delta_time, latitude, longitude
/meteorology_molec_bkscat/ozone_trans[
0
..801]
[
0
..699]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/meteorology_molec_bkscat/ozone_trans
-
units:
1
-
contentType:
modelResult
-
long_name:
Ozone transmission profile
-
description:
Ozone transmission profile, 30 m resolution, 20 km to -1 km
-
source:
Atmosphere ATBD
-
coordinates:
delta_time, latitude, longitude
/meteorology_molec_bkscat/molec_bkscat_p[
0
..801]
[
0
..699]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/meteorology_molec_bkscat/molec_bkscat_p
-
units:
Pa
-
contentType:
modelResult
-
long_name:
Pressure profile
-
description:
Pressure profiles from 20 km to -1 km
-
source:
Atmosphere ATBD
-
coordinates:
delta_time, latitude, longitude
/meteorology_molec_bkscat/met_t2m[
0
..801]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/meteorology_molec_bkscat/met_t2m
-
units:
K
-
long_name:
temperature_at_2m
-
standard_name:
temperature
-
description:
Temperature at 2m above the displacement height (K)
-
source:
GEOS5 FPIT 2D DFPITT1NXSLV
-
coordinates:
delta_time, latitude, longitude
-
contentType:
referenceInformation
/meteorology_molec_bkscat/met_u2m[
0
..801]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/meteorology_molec_bkscat/met_u2m
-
units:
m s-1
-
contentType:
referenceInformation
-
long_name:
Eastward_wind_at_2m
-
standard_name:
eastward_wind
-
description:
Eastward wind at 2m above the displacement height (m/s-1)
-
source:
GEOS5 FPIT 2D DFPITT1NXSLV
-
coordinates:
delta_time, latitude, longitude
/meteorology_molec_bkscat/met_u10m[
0
..801]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/meteorology_molec_bkscat/met_u10m
-
units:
m s-1
-
contentType:
referenceInformation
-
long_name:
Eastward_wind_at_10m
-
standard_name:
eastward_wind
-
description:
Eastward wind at 10m above the displacement height (m/s-1)
-
source:
GEOS5 FPIT 2D DFPITT1NXSLV
-
coordinates:
delta_time, latitude, longitude
/meteorology_molec_bkscat/molec_trans[
0
..801]
[
0
..699]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/meteorology_molec_bkscat/molec_trans
-
units:
1
-
contentType:
modelResult
-
long_name:
Molecular transmission profile
-
description:
Molecular transmission profile, 30 m resolution, 20 km to -1 km
-
source:
Atmosphere ATBD
-
coordinates:
delta_time, latitude, longitude
/meteorology_molec_bkscat/met_cldprs[
0
..801]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/meteorology_molec_bkscat/met_cldprs
-
units:
Pa
-
contentType:
referenceInformation
-
long_name:
cloud_top_pressure
-
standard_name:
pressure
-
description:
Pressure of the highest cloud top at this location from GEOS5 data
-
source:
GEOS5 FPIT 2D DFPITT1NXSLV
-
coordinates:
delta_time, latitude, longitude
/meteorology_molec_bkscat/met_v50m[
0
..801]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/meteorology_molec_bkscat/met_v50m
-
units:
m s-1
-
contentType:
referenceInformation
-
long_name:
northward_wind_at_50m
-
standard_name:
northward_wind
-
description:
Northward wind at 50m above the displacement height (m/s-1)
-
source:
GEOS5 FPIT 2D DFPITT1NXSLV
-
coordinates:
delta_time, latitude, longitude
/meteorology_molec_bkscat/met_v10m[
0
..801]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/meteorology_molec_bkscat/met_v10m
-
units:
m s-1
-
contentType:
referenceInformation
-
long_name:
Northward_wind_at_10m
-
standard_name:
northward_wind
-
description:
Northward wind at 10m above the displacement height (m/s-1)
-
source:
GEOS5 FPIT 2D DFPITT1NXSLV
-
coordinates:
delta_time, latitude, longitude
/meteorology_molec_bkscat/longitude[
0
..801]
(Type is Float64)
-
attributes
-
HDF5_OBJ_FULLPATH:
/meteorology_molec_bkscat/longitude
-
units:
degrees_east
-
contentType:
referenceInformation
-
long_name:
Longitude of the ATM histogram
-
standard_name:
longitude
-
description:
Longitude at the the top of the ATM histogram, WGS84, East=+, derived from the geolocation of the ATM range window.
-
source:
ATL03g ATBD
-
coordinates:
delta_time, latitude
-
valid_min:
-180.
-
valid_max:
180.
/meteorology_molec_bkscat/met_ps[
0
..801]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/meteorology_molec_bkscat/met_ps
-
units:
Pa
-
contentType:
referenceInformation
-
long_name:
Surface Pressure
-
standard_name:
pressure
-
description:
Surface Pressure (Pa)
-
source:
GEOS5 FPIT 3D DFPITI3NVASM
-
coordinates:
delta_time, latitude, longitude
/meteorology_molec_bkscat/latitude[
0
..801]
(Type is Float64)
-
attributes
-
HDF5_OBJ_FULLPATH:
/meteorology_molec_bkscat/latitude
-
units:
degrees_north
-
contentType:
referenceInformation
-
long_name:
Latitude of the ATM histogram
-
standard_name:
latitude
-
description:
Latitude at the the top of the ATM histogram, WGS84, North=+, Derived from the geolocation of the ATM range window.
-
source:
ATL03g ATBD
-
coordinates:
delta_time, longitude
-
valid_min:
-90.
-
valid_max:
90.
/meteorology_molec_bkscat/surf_type[
0
..801]
[
0
..4]
(Type is Int16)
-
attributes
-
HDF5_OBJ_FULLPATH:
/meteorology_molec_bkscat/surf_type
-
units:
1
-
contentType:
referenceInformation
-
long_name:
Surface Type
-
description:
Flags describing which surface types this interval is associated with. 0=not type, 1=is type. Order of array is land, ocean, sea ice, land ice, inland water.
-
source:
ATL03 ATBD, Section 4
-
coordinates:
delta_time, latitude, longitude
-
flag_meanings:
not_type is_type
-
flag_values:
0, 1
-
valid_min:
0
-
valid_max:
1
/meteorology_molec_bkscat/met_qv10m[
0
..801]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/meteorology_molec_bkscat/met_qv10m
-
units:
kg kg-1
-
contentType:
referenceInformation
-
long_name:
specific_humidity_at_10m
-
standard_name:
specific_humidity
-
description:
Specific humidity at 10 m above the displacement height (Pa)
-
source:
GEOS5 FPIT 2D DFPITT1NXSLV
-
coordinates:
delta_time, latitude, longitude
/meteorology_molec_bkscat/met_tqi[
0
..801]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/meteorology_molec_bkscat/met_tqi
-
units:
kg m2
-
contentType:
referenceInformation
-
long_name:
cloud_ice
-
description:
Total column cloud ice (Kg/m2)
-
source:
GEOS5 FPIT 2D DFPITT1NXSLV
-
coordinates:
delta_time, latitude, longitude
/meteorology_molec_bkscat/met_t10m[
0
..801]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/meteorology_molec_bkscat/met_t10m
-
units:
K
-
contentType:
referenceInformation
-
long_name:
temperature_at_10m
-
standard_name:
temperature
-
description:
Temperature at 10m above the displacement height (K)
-
source:
GEOS5 FPIT 2D DFPITT1NXSLV
-
coordinates:
delta_time, latitude, longitude
/meteorology_molec_bkscat/met_tql[
0
..801]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/meteorology_molec_bkscat/met_tql
-
units:
kg m2
-
contentType:
referenceInformation
-
long_name:
cloud_liquid_water
-
description:
Total column cloud liquid water (kg/m2)
-
source:
GEOS5 FPIT 2D DFPITT1NXSLV
-
coordinates:
delta_time, latitude, longitude
/meteorology_molec_bkscat/met_v2m[
0
..801]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/meteorology_molec_bkscat/met_v2m
-
units:
m s-1
-
contentType:
referenceInformation
-
long_name:
Northward_wind_at_2m
-
standard_name:
northward_wind
-
description:
Northward wind at 2m above the displacement height (m/s-1)
-
source:
GEOS5 FPIT 2D DFPITT1NXSLV
-
coordinates:
delta_time, latitude, longitude
/meteorology_molec_bkscat/met_ts[
0
..801]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/meteorology_molec_bkscat/met_ts
-
units:
K
-
contentType:
referenceInformation
-
long_name:
surface_temperature
-
standard_name:
temperature
-
description:
Surface skin temperature (K)
-
source:
GEOS5 FPIT 2D DFPITT1NXSLV
-
coordinates:
delta_time, latitude, longitude
/meteorology_molec_bkscat/segment_id[
0
..801]
(Type is Int32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/meteorology_molec_bkscat/segment_id
-
units:
1
-
contentType:
referenceInformation
-
long_name:
along-track segment ID number.
-
description:
A 7 digit number identifiying the along-track geolocation segment number. These are sequential, starting with 1 for the first segment after an ascending equatorial crossing node.
-
source:
ATL03 ATBD, Section 3.1
-
coordinates:
delta_time, latitude, longitude
/meteorology_molec_bkscat/met_qv2m[
0
..801]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/meteorology_molec_bkscat/met_qv2m
-
units:
kg kg-1
-
contentType:
referenceInformation
-
long_name:
specific_humidity_at_2m
-
standard_name:
specific_humidity
-
description:
Specific humidity at 2 m above the displacement height (Pa)
-
source:
GEOS5 FPIT 2D DFPITT1NXSLV
-
coordinates:
delta_time, latitude, longitude
/meteorology_molec_bkscat/delta_time[
0
..801]
(Type is Float64)
-
attributes
-
HDF5_OBJ_FULLPATH:
/meteorology_molec_bkscat/delta_time
-
units:
seconds since 2018-01-01
-
contentType:
modelResult
-
long_name:
Elapsed GPS seconds
-
standard_name:
time
-
description:
Number of GPS seconds since the ATLAS SDP epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed.
-
source:
Atmosphere ATBD
-
coordinates:
latitude, longitude
-
CLASS:
DIMENSION_SCALE
/meteorology_molec_bkscat/molec_bkscat_t[
0
..801]
[
0
..699]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/meteorology_molec_bkscat/molec_bkscat_t
-
units:
degreesC
-
contentType:
modelResult
-
long_name:
Temperature profile
-
description:
Temperature profiles from 20 km to -1 km
-
source:
Atmosphere ATBD
-
coordinates:
delta_time, latitude, longitude
/meteorology_molec_bkscat/met_u50m[
0
..801]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/meteorology_molec_bkscat/met_u50m
-
units:
m s-1
-
contentType:
referenceInformation
-
long_name:
Eastward_wind_at_50m
-
standard_name:
eastward_wind
-
description:
Eastward wind at 50m above the displacement height (m/s-1)
-
source:
GEOS5 FPIT 2D DFPITT1NXSLV
-
coordinates:
delta_time, latitude, longitude
/meteorology_molec_bkscat/met_troppb[
0
..801]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/meteorology_molec_bkscat/met_troppb
-
units:
Pa
-
contentType:
referenceInformation
-
long_name:
blended_tropopause_pressure
-
standard_name:
pressure
-
description:
Blended tropopause pressure (pa)
-
source:
GEOS5 FPIT 2D DFPITT1NXSLV
-
coordinates:
delta_time, latitude, longitude
/meteorology_molec_bkscat/mol_backscatter[
0
..801]
[
0
..699]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/meteorology_molec_bkscat/mol_backscatter
-
units:
m-1 sr-1
-
contentType:
modelResult
-
long_name:
Molecular backscatter profile
-
description:
Molecular backscatter profile, 30 m resolution, 20 km to -1 km
-
source:
Atmosphere ATBD
-
coordinates:
delta_time, latitude, longitude
/profile_2/backg_signal_max2[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/backg_signal_max2
-
units:
counts
-
contentType:
modelResult
-
long_name:
Background signal max 2
-
description:
Background signal max2, in photons/bin, from the selectd method used. (Sm2 Defined in Atmosphere ATBD section 2.3.2)
-
source:
Atmosphere ATBD section 3.3.4
-
coordinates:
delta_time, latitude, longitude
/profile_2/sig_count_med[
0
..20026]
(Type is Int32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/sig_count_med
-
units:
counts
-
contentType:
referenceInformation
-
long_name:
Count of Signal Heights - Medium
-
description:
Count of medium-confidence signal photons
-
source:
ATL03 ATBD, Section 5
-
coordinates:
delta_time, latitude, longitude
/profile_2/backg_std_dev1[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/backg_std_dev1
-
units:
counts
-
contentType:
modelResult
-
long_name:
Background standard deviation 1
-
description:
Background standard deviation from the selected method used (Sstd1 Defined in Atmosphere ATBD section 2.3.2)
-
source:
Atmosphere ATBD section 3.3.4
-
coordinates:
delta_time, latitude, longitude
/profile_2/dem_flag[
0
..20026]
(Type is Int16)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/dem_flag
-
_FillValue:
127
-
units:
1
-
contentType:
referenceInformation
-
long_name:
DEM Source Flag
-
description:
Indicates source of the DEM height. Values: 0=None, 1=GIMP, 2=GMTED, 3=MSS.
-
source:
Atmosphere ATBD
-
coordinates:
delta_time, latitude, longitude
-
flag_meanings:
none gimp gmted mss
-
flag_values:
0, 1, 2, 3
-
valid_min:
0
-
valid_max:
3
/profile_2/backg_max_bin1[
0
..20026]
(Type is Int32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/backg_max_bin1
-
units:
counts
-
contentType:
modelResult
-
long_name:
Background max bin 1
-
description:
Background maximum bin from the selected method used. (Binmax1 Defined in Atmosphere ATBD section 2.3.2)
-
source:
Atmosphere ATBD section 3.3.4
-
coordinates:
delta_time, latitude, longitude
/profile_2/bckgrd_atlas/bckgrd_counts_reduced[
0
..160207]
(Type is Int32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/bckgrd_atlas/bckgrd_counts_reduced
-
units:
counts
-
long_name:
ATLAS 50-shot background count - reduced
-
description:
Number of photon counts in the 50-shot sum after subtracting the number of signal photon events, defined as in ATBD Section 5, in that span.
-
source:
ATL03 ATBD Section 7.3
-
coordinates:
delta_time
-
contentType:
modelResult
/profile_2/bckgrd_atlas/bckgrd_counts[
0
..160207]
(Type is Int32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/bckgrd_atlas/bckgrd_counts
-
units:
counts
-
contentType:
modelResult
-
long_name:
ATLAS 50-shot background count
-
description:
Onboard 50 shot background (200 Hz) sum of photon events within the altimetric range window.
-
source:
ATL03 ATBD Section 7.3
-
coordinates:
delta_time
/profile_2/bckgrd_atlas/delta_time[
0
..160207]
(Type is Float64)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/bckgrd_atlas/delta_time
-
units:
seconds since 2018-01-01
-
contentType:
modelResult
-
long_name:
Elapsed GPS seconds
-
standard_name:
time
-
description:
Number of GPS seconds since the ATLAS SDP epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed.
-
source:
Derived via Time Tagging
-
coordinates:
delta_time
-
CLASS:
DIMENSION_SCALE
-
NAME:
profile_2/bckgrd_atlas/delta_time
/profile_2/bckgrd_atlas/bckgrd_hist_top[
0
..160207]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/bckgrd_atlas/bckgrd_hist_top
-
units:
meters
-
contentType:
modelResult
-
long_name:
Top of the altimetric range window
-
description:
The height of the top of the altimetric histogram, in meters above the WGS-84 ellipsoid, with all geophysical corrections applied. Parameter is ingested at 50-Hz, and values are repeated to form a 200-Hz array.
-
source:
ATL03 ATBD Section 7.3
-
coordinates:
delta_time
/profile_2/bckgrd_atlas/bckgrd_int_height[
0
..160207]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/bckgrd_atlas/bckgrd_int_height
-
units:
meters
-
contentType:
modelResult
-
long_name:
Altimetric range window width
-
description:
The height of the altimetric range window. This is the height over which the 50-shot sum is generated. Parameter is ingested at 50-Hz, and values are repeated to form a 200-Hz array.
-
source:
ATL03 ATBD Section 7.3
-
coordinates:
delta_time
/profile_2/bckgrd_atlas/bckgrd_int_height_reduced[
0
..160207]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/bckgrd_atlas/bckgrd_int_height_reduced
-
units:
meters
-
contentType:
modelResult
-
long_name:
Altimetric range window height - reduced
-
description:
The height of the altimetric range window after subtracting the height span of the signal photon events in the 50-shot span.
-
source:
ATL03 ATBD Section 7.3
-
coordinates:
delta_time
/profile_2/bckgrd_atlas/bckgrd_rate[
0
..160207]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/bckgrd_atlas/bckgrd_rate
-
units:
counts / second
-
contentType:
modelResult
-
long_name:
Background count rate based on the ATLAS 50-shot sum
-
description:
The background count rate from the 50-shot altimetric histogram after removing the number of likely signal photons based on Section 5.
-
source:
ATL03 ATBD Section 7.3
-
coordinates:
delta_time
/profile_2/bckgrd_atlas/pce_mframe_cnt[
0
..160207]
(Type is UInt32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/bckgrd_atlas/pce_mframe_cnt
-
units:
counts
-
contentType:
referenceInformation
-
long_name:
PCE Major frame counter
-
description:
Major Frame ID - The major frame ID is read from the DFC and starts counting at DFC POR. The counter is used to identify individual major frames across diag and science packets. This counter can go for about 2.7 years before rolling over. It is in the first time tag science packet. Used as part of the photon ID
-
source:
ATL02
-
coordinates:
delta_time
/profile_2/sig_count_low[
0
..20026]
(Type is Int32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/sig_count_low
-
units:
counts
-
contentType:
referenceInformation
-
long_name:
Count of Signal Heights - Low
-
description:
Count of low-confidence signal photons
-
source:
ATL03 ATBD, Section 5
-
coordinates:
delta_time, latitude, longitude
/profile_2/backg_method1[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/backg_method1
-
units:
counts
-
contentType:
modelResult
-
long_name:
Background method 1
-
description:
Background from method 1in photons/bin. (pb1 Defined in Atmosphere ATBD section 2.3.2)
-
source:
Atmosphere ATBD section 3.3.4
-
coordinates:
delta_time, latitude, longitude
/profile_2/sig_h_sdev_hi[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/sig_h_sdev_hi
-
_FillValue:
3.402823466e+38
-
units:
meters
-
contentType:
referenceInformation
-
long_name:
SDev of Signal Heights -High
-
description:
SDev of the heights of high-confidence signal photons
-
source:
ATL03 ATBD, Section 5
-
coordinates:
delta_time, latitude, longitude
/profile_2/dtime_fac1[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/dtime_fac1
-
_FillValue:
3.402823466e+38
-
units:
1
-
contentType:
modelResult
-
long_name:
dead_time_factor1
-
description:
Dead time correction factor for surface signal computed from radiometric lookup table.
-
source:
Atmosphere ATBD
-
coordinates:
delta_time, latitude, longitude
/profile_2/atm_tw_top[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/atm_tw_top
-
units:
meters
-
contentType:
referenceInformation
-
long_name:
Atmospheric Telemetry Window Top
-
description:
The geolocated ellipsoidal height at the top of the Atmospheric range window
-
source:
ATL03g ATBD
-
coordinates:
delta_time, latitude, longitude
/profile_2/sig_h_mean_hi[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/sig_h_mean_hi
-
contentType:
referenceInformation
-
long_name:
Mean of SignalHeights - High
-
description:
Mean height of high-confidence signal photons
-
source:
ATL03 ATBD, Section 5
-
coordinates:
delta_time, latitude, longitude
-
_FillValue:
3.402823466e+38
-
units:
meters
/profile_2/beam_azimuth[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/beam_azimuth
-
_FillValue:
3.402823466e+38
-
units:
degrees_east
-
contentType:
referenceInformation
-
long_name:
beam azimuth
-
description:
Beam azimuth
-
source:
ATL03 ATBD
-
coordinates:
delta_time, latitude, longitude
/profile_2/range_to_top[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/range_to_top
-
units:
meters
-
contentType:
referenceInformation
-
long_name:
Range
-
description:
Range from the spacecraft to the top of the atmosphere range window.
-
source:
Atmosphere ATBD
-
coordinates:
delta_time, latitude, longitude
/profile_2/solar_azimuth[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/solar_azimuth
-
units:
degrees_east
-
contentType:
referenceInformation
-
long_name:
solar azimuth
-
description:
The direction, eastwards from north, of the sun vector as seen by an observer at the laser ground spot.
-
source:
ATL03g ATBD
-
coordinates:
delta_time, latitude, longitude
/profile_2/longitude[
0
..20026]
(Type is Float64)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/longitude
-
units:
degrees_east
-
contentType:
referenceInformation
-
long_name:
Longitude of the ATM histogram
-
standard_name:
longitude
-
description:
Longitude at the the top of the ATM histogram, WGS84, East=+, derived from the geolocation of the ATM range window.
-
source:
ATL03g ATBD
-
coordinates:
delta_time, latitude
-
valid_min:
-180.
-
valid_max:
180.
/profile_2/backg_max_bin2[
0
..20026]
(Type is Int32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/backg_max_bin2
-
units:
counts
-
contentType:
modelResult
-
long_name:
Background max bin 2
-
description:
Background maximum bin2 from the selected method used. (Binmax2 Defined in Atmosphere ATBD section 2.3.2)
-
source:
Atmosphere ATBD section 3.3.4
-
coordinates:
delta_time, latitude, longitude
/profile_2/latitude[
0
..20026]
(Type is Float64)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/latitude
-
units:
degrees_north
-
contentType:
referenceInformation
-
long_name:
Latitude of the ATM histogram
-
standard_name:
latitude
-
description:
Latitude at the the top of the ATM histogram, WGS84, North=+, Derived from the geolocation of the ATM range window.
-
source:
ATL03g ATBD
-
coordinates:
delta_time, longitude
-
valid_min:
-90.
-
valid_max:
90.
/profile_2/surf_type[
0
..20026]
[
0
..4]
(Type is Int16)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/surf_type
-
units:
1
-
contentType:
referenceInformation
-
long_name:
Surface Type
-
description:
Flags describing which surface types this interval is associated with. 0=not type, 1=is type. Order of array is land, ocean, sea ice, land ice, inland water.
-
source:
ATL03 ATBD, Section 4
-
coordinates:
delta_time, latitude, longitude
-
flag_meanings:
not_type is_type
-
flag_values:
0, 1
-
valid_min:
0
-
valid_max:
1
/profile_2/atm_rw_width_m[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/atm_rw_width_m
-
units:
seconds
-
contentType:
referenceInformation
-
long_name:
Atmospheric Range Window Width
-
description:
The range, in meters, from the Atmospheric range window start to the range window stop.
-
source:
ATL02
-
coordinates:
delta_time, latitude, longitude
/profile_2/backg_method3[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/backg_method3
-
_FillValue:
3.402823466e+38
-
units:
1
-
contentType:
modelResult
-
long_name:
Background method 3
-
description:
Background from method 3 in photons/bin. (Defined in Atmosphere ATBD section 3.3.4)
-
source:
Atmosphere ATBD section 3.3.4
-
coordinates:
delta_time, latitude, longitude
/profile_2/surf_type_igbp[
0
..20026]
(Type is Int16)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/surf_type_igbp
-
units:
1
-
long_name:
IGBP Surface Type
-
description:
IGBP Surface Type
-
source:
Atmosphere ATBD, IGBP Surface Type
-
coordinates:
delta_time, latitude, longitude
-
contentType:
referenceInformation
/profile_2/sig_h_mean_med[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/sig_h_mean_med
-
_FillValue:
3.402823466e+38
-
units:
meters
-
contentType:
referenceInformation
-
long_name:
Mean of Signa Heightsl - Med
-
description:
Mean height of medium-confidence signal photons
-
source:
ATL03 ATBD, Section 5
-
coordinates:
delta_time, latitude, longitude
/profile_2/backg_signal_max1[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/backg_signal_max1
-
units:
counts
-
long_name:
Background signal max 1
-
description:
Background signal ma1x, in photons/bin, from the selectd method used. (Sm1 Defined in Atmosphere ATBD section 2.3.2)
-
source:
Atmosphere ATBD section 3.3.4
-
coordinates:
delta_time, latitude, longitude
-
contentType:
modelResult
/profile_2/dem_h[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/dem_h
-
_FillValue:
3.402823466e+38
-
units:
meters
-
contentType:
referenceInformation
-
long_name:
DEM Height
-
description:
Best available DEM (in priority of GIMP/GMTED/MSS) value at the geolocation point.
-
source:
Atmosphere ATBD
-
coordinates:
delta_time, latitude, longitude
/profile_2/tx_pulse_energy[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/tx_pulse_energy
-
units:
Joules
-
contentType:
referenceInformation
-
long_name:
Transmit Pulse Energy
-
description:
The average transmit pulse energy recorded by the Start Pulse Detector, split into per-beam measurements.
-
source:
ATL02 ATBD, Section 7.2
-
coordinates:
delta_time, latitude, longitude
/profile_2/surface_height[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/surface_height
-
_FillValue:
3.402823466e+38
-
units:
meters
-
contentType:
modelResult
-
long_name:
Surface height
-
description:
Height of the detected surface bin.
-
source:
Atmosphere ATBD section 3.3.5
-
coordinates:
delta_time, latitude, longitude
/profile_2/nrb_profile[
0
..20026]
[
0
..699]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/nrb_profile
-
_FillValue:
3.402823466e+38
-
units:
1
-
contentType:
modelResult
-
long_name:
NRB Profile
-
description:
Normalize relative backscatter (NRB) profile vertically aligned to 20 to -1 km with vertical resolution of 30 m. (Photons km2/Joule)
-
source:
Atmosphere ATBD section 2.3
-
coordinates:
delta_time, latitude, longitude
/profile_2/backg_mean2[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/backg_mean2
-
units:
counts
-
contentType:
modelResult
-
long_name:
Signal mean
-
description:
Signal mean from method 2 (pb2 defined in Atmosphere ATBD part 1 section 2.3.4)
-
source:
Atmosphere ATBD section 3.3.4
-
coordinates:
delta_time, latitude, longitude
/profile_2/prof_dist_y[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/prof_dist_y
-
units:
meters
-
contentType:
referenceInformation
-
long_name:
Across Track Distance from RGT
-
description:
Across-Track distance from the reference ground track.
-
source:
ATL03g ATBD, Section 3.4
-
coordinates:
delta_time, latitude, longitude
/profile_2/beam_elevation[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/beam_elevation
-
_FillValue:
3.402823466e+38
-
units:
degrees
-
contentType:
referenceInformation
-
long_name:
beam elevation
-
description:
Beam elevation
-
source:
ATL03 ATBD
-
coordinates:
delta_time, latitude, longitude
/profile_2/calibration/delta_time_end[
0
..0]
(Type is Float64)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/calibration/delta_time_end
-
units:
seconds since 2018-01-01
-
contentType:
modelResult
-
long_name:
Calibration interval end time
-
standard_name:
time
-
description:
Number of GPS seconds since the ATLAS SDP epoch where the cal interval ended. The corresponding start time of the interval is delta_time. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed.
-
source:
Atmosphere ATBD
-
coordinates:
delta_time, latitude, longitude
/profile_2/calibration/cal_ozone_trans[
0
..0]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/calibration/cal_ozone_trans
-
_FillValue:
3.402823466e+38
-
units:
1
-
contentType:
modelResult
-
long_name:
Ozone transmission used
-
description:
Ozone transmission term used to compute cal_const.
-
source:
Atmosphere ATBD
-
coordinates:
delta_time, latitude, longitude
/profile_2/calibration/cal_c_trans[
0
..0]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/calibration/cal_c_trans
-
_FillValue:
3.402823466e+38
-
units:
1
-
contentType:
modelResult
-
long_name:
total transmission used
-
description:
The total transmission used to compute cal_const.
-
source:
Atmosphere ATBD
-
coordinates:
delta_time, latitude, longitude
/profile_2/calibration/longitude[
0
..0]
(Type is Float64)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/calibration/longitude
-
units:
degrees_east
-
contentType:
modelResult
-
long_name:
Calibration interval start longitude
-
standard_name:
longitude
-
description:
Start Longitude of calibration interval.
-
source:
Atmosphere ATBD
-
coordinates:
delta_time, latitude
-
valid_min:
-180.
-
valid_max:
180.
/profile_2/calibration/latitude_end[
0
..0]
(Type is Float64)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/calibration/latitude_end
-
units:
degrees_north
-
contentType:
modelResult
-
long_name:
Calibration interval end latitude
-
description:
Stop Latitude of calibration interval.
-
source:
Atmosphere ATBD
-
coordinates:
delta_time, latitude, longitude
-
valid_min:
-90.
-
valid_max:
90.
/profile_2/calibration/latitude[
0
..0]
(Type is Float64)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/calibration/latitude
-
units:
degrees_north
-
long_name:
Calibration interval start Latitude
-
standard_name:
latitude
-
description:
Start Latitude of calibration interval.
-
source:
Atmosphere ATBD
-
coordinates:
delta_time, longitude
-
valid_min:
-90.
-
valid_max:
90.
-
contentType:
modelResult
/profile_2/calibration/cal_molec[
0
..0]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/calibration/cal_molec
-
_FillValue:
3.402823466e+38
-
units:
m-1 sr-1
-
contentType:
modelResult
-
long_name:
Molecular Backscatter used
-
description:
Molecular Backscatter value used to compute cal_const.
-
source:
Atmosphere ATBD
-
coordinates:
delta_time, latitude, longitude
/profile_2/calibration/cal_c[
0
..0]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/calibration/cal_c
-
_FillValue:
3.402823466e+38
-
units:
Photons*m^3 *sr / J
-
contentType:
modelResult
-
long_name:
Calculated Calibration constant
-
description:
Calculated calibration constant (one per beam, Defined by Atmosphere ATBD eqn 3.27)
-
source:
Atmosphere ATBD
-
coordinates:
delta_time, latitude, longitude
/profile_2/calibration/delta_time[
0
..0]
(Type is Float64)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/calibration/delta_time
-
units:
seconds since 2018-01-01
-
contentType:
modelResult
-
long_name:
Calibration interval start time
-
standard_name:
time
-
description:
Number of GPS seconds since the ATLAS SDP epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed.
-
source:
Derived via Time Tagging
-
coordinates:
latitude, longitude
-
CLASS:
DIMENSION_SCALE
/profile_2/calibration/cal_con[
0
..0]
(Type is Int32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/calibration/cal_con
-
_FillValue:
2147483647
-
units:
1
-
contentType:
modelResult
-
long_name:
Calibration Confidence
-
description:
Calibration Confidence
-
source:
Atmosphere ATBD
-
coordinates:
delta_time, latitude, longitude
/profile_2/calibration/cal_nrb[
0
..0]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/calibration/cal_nrb
-
_FillValue:
3.402823466e+38
-
units:
1
-
contentType:
modelResult
-
long_name:
NRB value used
-
description:
NRB value used to compute cal_const.
-
source:
Atmosphere ATBD
-
coordinates:
delta_time, latitude, longitude
/profile_2/calibration/longitude_end[
0
..0]
(Type is Float64)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/calibration/longitude_end
-
units:
degrees_east
-
contentType:
modelResult
-
long_name:
Calibration interval end longitude
-
description:
Stop Longitude of calibration interval.
-
source:
Atmosphere ATBD
-
coordinates:
delta_time, latitude, longitude
-
valid_min:
-180.
-
valid_max:
180.
/profile_2/segment_id[
0
..20026]
(Type is Int32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/segment_id
-
units:
1
-
contentType:
referenceInformation
-
long_name:
along-track segment ID number.
-
description:
A 7 digit number identifiying the along-track geolocation segment number. These are sequential, starting with 1 for the first segment after an ascending equatorial crossing node.
-
source:
ATL03 ATBD, Section 3.1
-
coordinates:
delta_time, latitude, longitude
/profile_2/surface_bin[
0
..20026]
(Type is Int32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/surface_bin
-
_FillValue:
2147483647
-
units:
1
-
contentType:
modelResult
-
long_name:
Surface bin
-
description:
Vertially aligned, NRB bin number of the detected surface return.
-
source:
Atmosphere ATBD section 3.3.5
-
coordinates:
delta_time, latitude, longitude
/profile_2/solar_elevation[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/solar_elevation
-
units:
degrees
-
contentType:
referenceInformation
-
long_name:
solar elevation
-
description:
Solar Angle above or below the plane tangent to the ellipsoid surface at the laser spot. Positive values mean the sun is above the horizon, while negative values mean it is below the horizon. The effect of atmospheric refraction is not included. This is a low precision value, with approximately TBD degree accuracy.
-
source:
ATL03g ATBD
-
coordinates:
delta_time, latitude, longitude
/profile_2/sig_count_hi[
0
..20026]
(Type is Int32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/sig_count_hi
-
units:
counts
-
contentType:
referenceInformation
-
long_name:
Count of Signa Heightsl - High
-
description:
Count of high-confidence signal photons
-
source:
ATL03 ATBD, Section 5
-
coordinates:
delta_time, latitude, longitude
/profile_2/dtime_fac2[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/dtime_fac2
-
_FillValue:
3.402823466e+38
-
units:
1
-
contentType:
modelResult
-
long_name:
dead_time_factor2
-
description:
Dead time correction factor for surface signal computed from ATBD equation 2.1.
-
source:
Atmosphere ATBD
-
coordinates:
delta_time, latitude, longitude
/profile_2/prof_dist_x[
0
..20026]
(Type is Float64)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/prof_dist_x
-
units:
meters
-
contentType:
referenceInformation
-
long_name:
Along Track Distance
-
description:
Along-track distance from the equator crossing.
-
source:
ATL03g ATBD, Section 3.4
-
coordinates:
delta_time, latitude, longitude
/profile_2/delta_time[
0
..20026]
(Type is Float64)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/delta_time
-
units:
seconds since 2018-01-01
-
contentType:
modelResult
-
long_name:
Elapsed GPS seconds
-
standard_name:
time
-
description:
Number of GPS seconds since the ATLAS SDP epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed.
-
source:
Atmosphere ATBD
-
coordinates:
latitude, longitude
-
CLASS:
DIMENSION_SCALE
/profile_2/backg_std_dev2[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/backg_std_dev2
-
units:
counts
-
contentType:
modelResult
-
long_name:
Background standard deviation 2
-
description:
Background standard deviation from the selected method used (Sstd2 Defined in Atmosphere ATBD section 2.3.2)
-
source:
Atmosphere ATBD section 3.3.4
-
coordinates:
delta_time, latitude, longitude
/profile_2/backg_method2[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/backg_method2
-
units:
counts
-
contentType:
modelResult
-
long_name:
Background method 2
-
description:
Background from method 2 in photons/bin. (pb2 Defined in Atmosphere ATBD section 2.3.2)
-
source:
Atmosphere ATBD section 3.3.4
-
coordinates:
delta_time, latitude, longitude
/profile_2/pce_mframe_cnt[
0
..20026]
(Type is UInt32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/pce_mframe_cnt
-
units:
counts
-
contentType:
referenceInformation
-
long_name:
PCE Major frame counter
-
description:
Major Frame Counter - The major frame counter is read from the DFC and starts counting at DFC POR. The counter is used to identify individual major frames across diag and science packets. This counter can go for about 2.7 years before rolling over. It is in the first time tag science packet. Used as part of the photon ID
-
source:
ATL02
-
coordinates:
delta_time, latitude, longitude
/profile_2/sc_alt[
0
..20026]
(Type is Float64)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/sc_alt
-
units:
meters
-
contentType:
physicalMeasurement
-
long_name:
Altitude
-
description:
Height of the spacecraft above the WGS84 ellipsoid.
-
source:
ATL03g ATBD, Section 3.4
-
coordinates:
delta_time, latitude, longitude
/profile_2/sig_h_sdev_low[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/sig_h_sdev_low
-
_FillValue:
3.402823466e+38
-
units:
meters
-
contentType:
referenceInformation
-
long_name:
SDev of Signal Heights -Low
-
description:
SDev of the heights of low-confidence signal photons
-
source:
ATL03 ATBD, Section 5
-
coordinates:
delta_time, latitude, longitude
/profile_2/sig_h_mean_low[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/sig_h_mean_low
-
_FillValue:
3.402823466e+38
-
units:
meters
-
contentType:
referenceInformation
-
long_name:
Mean of Signal Heights - Low
-
description:
Mean height of low-confidence signal photons
-
source:
ATL03 ATBD, Section 5
-
coordinates:
delta_time, latitude, longitude
/profile_2/sig_h_sdev_med[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/sig_h_sdev_med
-
_FillValue:
3.402823466e+38
-
units:
meters
-
contentType:
referenceInformation
-
long_name:
SDev of Signa Heights -Med
-
description:
SDev of the heights of medium-confidence signal photons
-
source:
ATL03 ATBD, Section 5
-
coordinates:
delta_time, latitude, longitude
/profile_2/nrb_bot_bin[
0
..20026]
(Type is Int32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/nrb_bot_bin
-
_FillValue:
2147483647
-
units:
1
-
contentType:
modelResult
-
long_name:
NRB Profile bottom valid bin
-
description:
The ending (bottom) bin number within the 20 to -1 km vertically aligned profile where data are valid. Bin number starts at 1.
-
source:
Atmosphere ATBD section 2.3
-
coordinates:
delta_time, latitude, longitude
/profile_2/surface_sig[
0
..20026]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/surface_sig
-
units:
counts
-
contentType:
modelResult
-
long_name:
Surface signal count
-
description:
Number of photons in the detected surface bin.
-
source:
Atmosphere ATBD section 3.3.5
-
coordinates:
delta_time, latitude, longitude
/profile_2/nrb_top_bin[
0
..20026]
(Type is Int32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/profile_2/nrb_top_bin
-
_FillValue:
2147483647
-
units:
counts
-
contentType:
modelResult
-
long_name:
NRB Profile top valid bin
-
description:
The starting (top) bin number within the 20 to -1 km vertically aligned profile where data are valid. Bin number starts at 1.
-
source:
Atmosphere ATBD section 2.3
-
coordinates:
delta_time, latitude, longitude
/ancillary_data/release[
0
..0]
(Type is String)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/release
-
units:
1
-
contentType:
auxiliaryInformation
-
long_name:
Release Number
-
description:
Release number of the granule. The release number is incremented when the software or ancillary data used to create the granule has been changed.
-
source:
Operations
/ancillary_data/end_geoseg[
0
..0]
(Type is Int32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/end_geoseg
-
units:
1
-
contentType:
auxiliaryInformation
-
long_name:
Ending Geolocation Segment
-
description:
The ending geolocation segment number associated with the data contained within this granule. ICESat granule geographic regions are further refined by geolocation segments. During the geolocation process, a geolocation segment is created approximately every 20m from the start of the orbit to the end. The geolocation segments help align the ATLAS strong a weak beams and provide a common segment length for the L2 and higher products. The geolocation segment indices differ slightly from orbit-to-orbit because of the irregular shape of the Earth. The geolocation segment indices on ATL01 and ATL02 are only approximate because beams have not been aligned at the time of their creation.
-
source:
Derived
/ancillary_data/version[
0
..0]
(Type is String)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/version
-
units:
1
-
contentType:
auxiliaryInformation
-
long_name:
Version
-
description:
Version number of this granule within the release. It is a sequential number corresponding to the number of times the granule has been reprocessed for the current release.
-
source:
Operations
/ancillary_data/end_region[
0
..0]
(Type is Int32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/end_region
-
units:
1
-
contentType:
auxiliaryInformation
-
long_name:
Ending Region
-
description:
The ending product-specific region number associated with the data contained within this granule. ICESat-2 data products are separated by geographic regions. The data contained within a specific region are the same for ATL01 and ATL02. ATL03 regions differ slightly because of different geolocation segment locations caused by the irregular shape of the Earth. The region indices for other products are completely independent.
-
source:
Derived
/ancillary_data/atmosphere/cal_atm_trans[
0
..0]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/atmosphere/cal_atm_trans
-
units:
1
-
contentType:
auxiliaryInformation
-
long_name:
Cal Atm Trans
-
description:
Particulate transmission from top of atmosphere to the calibration height (13 km)
-
source:
Atmosphere ATBD section 2
/ancillary_data/atmosphere/back_f2[
0
..0]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/atmosphere/back_f2
-
units:
1
-
contentType:
auxiliaryInformation
-
long_name:
Background Fact method2
-
description:
Scaling factor in Method 2 background computation
-
source:
Atmosphere ATBD section 3.3.4
/ancillary_data/atmosphere/cal_cloud_thres[
0
..0]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/atmosphere/cal_cloud_thres
-
units:
counts
-
contentType:
auxiliaryInformation
-
long_name:
Cal Cloud Threshold
-
description:
Threshold for excluding NRB data in calibration zone.
-
source:
Atmosphere ATBD section 2
/ancillary_data/atmosphere/va_top_ht[
0
..0]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/atmosphere/va_top_ht
-
units:
meters
-
contentType:
auxiliaryInformation
-
long_name:
Top height of vertically aligned profile
-
description:
Top height of vertically aligned profile
-
source:
Atmosphere ATBD
/ancillary_data/atmosphere/alpha[
0
..0]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/atmosphere/alpha
-
units:
1
-
contentType:
auxiliaryInformation
-
long_name:
Scaling factor (a)
-
description:
Scaling factor (a) for computation of the magnitude of molecular folding.
-
source:
Atmosphere ATBD section 2
/ancillary_data/atmosphere/cal_integ_time[
0
..0]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/atmosphere/cal_integ_time
-
units:
seconds
-
contentType:
auxiliaryInformation
-
long_name:
Cal Integ Time
-
description:
Calibration integration time
-
source:
Atmosphere ATBD section 2
/ancillary_data/atmosphere/ozone_const[
0
..0]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/atmosphere/ozone_const
-
units:
1
-
contentType:
auxiliaryInformation
-
long_name:
Ozone column density constant
-
description:
Ozone column density constant
-
source:
Atmosphere ATBD
/ancillary_data/atmosphere/bin_span[
0
..0]
(Type is Int32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/atmosphere/bin_span
-
units:
counts
-
contentType:
auxiliaryInformation
-
long_name:
Number of bins to search for max
-
description:
Number of bins to search for max
-
source:
Atmosphere ATBD
/ancillary_data/atmosphere/num_va_bins[
0
..0]
(Type is Int32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/atmosphere/num_va_bins
-
units:
counts
-
contentType:
auxiliaryInformation
-
long_name:
Number of vertically aligned bins
-
description:
Number of vertically aligned bins
-
source:
Atmosphere ATBD
/ancillary_data/atmosphere/atlas_atm_shot_sum_50hz[
0
..0]
(Type is Int32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/atmosphere/atlas_atm_shot_sum_50hz
-
units:
counts
-
contentType:
auxiliaryInformation
-
long_name:
Number of shots at 50hz
-
description:
Number of shots summed to compute an ATM histogram at 50 hz (diagnostic)
-
source:
Atmosphere ATBD
/ancillary_data/atmosphere/atlas_n_atm_hist_bins[
0
..0]
(Type is Int32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/atmosphere/atlas_n_atm_hist_bins
-
units:
counts
-
contentType:
auxiliaryInformation
-
long_name:
Number of histogram bins
-
description:
Number of ATM histogram bins
-
source:
Atmosphere ATBD
/ancillary_data/atmosphere/gas_const_r[
0
..0]
(Type is Float64)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/atmosphere/gas_const_r
-
units:
1
-
contentType:
auxiliaryInformation
-
long_name:
Ideal gas constant R
-
description:
Ideal gas constant (R)
-
source:
Globals
/ancillary_data/atmosphere/deg2rad[
0
..0]
(Type is Float64)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/atmosphere/deg2rad
-
units:
1
-
contentType:
auxiliaryInformation
-
long_name:
Degree to radians conversion
-
description:
Degrees to radians conversion factor
-
source:
Globals
/ancillary_data/atmosphere/atlas_atm_hist_binsize[
0
..0]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/atmosphere/atlas_atm_hist_binsize
-
units:
meters
-
contentType:
auxiliaryInformation
-
description:
Nominal size of each ATM histogram bin, in meters
-
source:
Atmosphere ATBD
-
long_name:
Histogram bin size (m)
/ancillary_data/atmosphere/backg_n_seg[
0
..0]
(Type is Int32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/atmosphere/backg_n_seg
-
units:
counts
-
contentType:
auxiliaryInformation
-
long_name:
Number of background segments in method 1
-
description:
Number of background segments in method 1
-
source:
Atmosphere ATBD section 3.3.4
/ancillary_data/atmosphere/king_fact[
0
..0]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/atmosphere/king_fact
-
units:
1
-
contentType:
auxiliaryInformation
-
long_name:
KING factor
-
description:
King factor for molecular transmission.
-
source:
Atmosphere ATBD
/ancillary_data/atmosphere/atlas_atm_hist_binsize_s[
0
..0]
(Type is Float64)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/atmosphere/atlas_atm_hist_binsize_s
-
units:
meters
-
contentType:
auxiliaryInformation
-
description:
Nominal size of each ATM histogram bin, in seconds
-
source:
Atmosphere ATBD
-
long_name:
Histogram bin size (s)
/ancillary_data/atmosphere/cal_top_h[
0
..0]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/atmosphere/cal_top_h
-
units:
meters
-
contentType:
auxiliaryInformation
-
long_name:
Top height of Cal zone
-
description:
Top height of the calibration zone
-
source:
Atmosphere ATBD section 2
/ancillary_data/atmosphere/cal_default[
0
..0]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/atmosphere/cal_default
-
units:
Photons*m^3 *sr / J
-
contentType:
auxiliaryInformation
-
long_name:
Default CAL Constant
-
description:
Default atmosphere calibration constant. Used by default when no calibration data have been computed for an ATL04 granule.
-
source:
Atmosphere ATBD section 2
/ancillary_data/atmosphere/back_f1[
0
..0]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/atmosphere/back_f1
-
units:
1
-
contentType:
auxiliaryInformation
-
long_name:
Background Fact method1
-
description:
Scaling factor in Method 1 background computation
-
source:
Atmosphere ATBD section 3.3.4
/ancillary_data/atmosphere/grd_thres[
0
..0]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/atmosphere/grd_thres
-
units:
counts
-
contentType:
auxiliaryInformation
-
long_name:
Ground Threshold
-
description:
Threshold for Ground detection (photons/bin)
-
source:
Atmosphere ATBD section 2
/ancillary_data/atmosphere/atm_tep_width[
0
..0]
(Type is Float64)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/atmosphere/atm_tep_width
-
units:
sq meters
-
contentType:
auxiliaryInformation
-
long_name:
TEP Window Width
-
description:
The width of the TEP removal window.
-
source:
Atmosphere ATBD
/ancillary_data/atmosphere/dtime_select[
0
..0]
(Type is Int32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/atmosphere/dtime_select
-
units:
1
-
contentType:
auxiliaryInformation
-
description:
Deadtime factor used.
-
source:
Control
-
flag_meanings:
dtime_fact1 dtime_fact2
-
flag_values:
1, 2
-
valid_min:
1
-
valid_max:
2
-
long_name:
dead time factor used
/ancillary_data/atmosphere/boltzmann_const[
0
..0]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/atmosphere/boltzmann_const
-
units:
erg/K
-
contentType:
auxiliaryInformation
-
long_name:
Boltzmann Constant
-
description:
Boltzmann constant
-
source:
Atmosphere ATBD section 2
/ancillary_data/atmosphere/atm_laser_wavelength_nm[
0
..0]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/atmosphere/atm_laser_wavelength_nm
-
units:
nm
-
contentType:
auxiliaryInformation
-
long_name:
Laser Wavelength (nm)
-
description:
ATLAS Laser wavelength, in nanometers
-
source:
Atmosphere ATBD
/ancillary_data/atmosphere/ht_min[
0
..0]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/atmosphere/ht_min
-
units:
meters
-
contentType:
auxiliaryInformation
-
long_name:
Minimum height to use in ATM profile
-
description:
Minimum height to use in ATM profile
-
source:
Atmosphere ATBD
/ancillary_data/atmosphere/atlas_n_pce[
0
..0]
(Type is Int32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/atmosphere/atlas_n_pce
-
units:
1
-
contentType:
auxiliaryInformation
-
long_name:
Number of ATLAS PCEs
-
description:
Number of ATLAS PCE boards
-
source:
Atmosphere ATBD
/ancillary_data/atmosphere/num_molec_bins[
0
..0]
(Type is Int32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/atmosphere/num_molec_bins
-
units:
counts
-
contentType:
auxiliaryInformation
-
long_name:
Number of bins in molecular profile
-
description:
Number of bins in molecular profile
-
source:
Atmosphere ATBD
/ancillary_data/atmosphere/molec_top_ht[
0
..0]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/atmosphere/molec_top_ht
-
units:
meters
-
contentType:
auxiliaryInformation
-
long_name:
Top height of molecular profile
-
description:
Top height of molecular profile.
-
source:
Atmosphere ATBD
/ancillary_data/atmosphere/aer_scat_rat[
0
..0]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/atmosphere/aer_scat_rat
-
units:
1
-
contentType:
auxiliaryInformation
-
long_name:
Aerosol Scattering Ratio
-
description:
Aerosol Scattering Ratio in the calibration zone (11
-
source:
Atmosphere ATBD
/ancillary_data/atmosphere/atm_processing_interval[
0
..0]
(Type is Float64)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/atmosphere/atm_processing_interval
-
units:
seconds
-
contentType:
auxiliaryInformation
-
long_name:
Seconds of ATM data processed in one chunk.
-
description:
The number of seconds of ATM data processed in one chunk.
-
source:
Control
/ancillary_data/atmosphere/atm_tep_start[
0
..0]
(Type is Float64)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/atmosphere/atm_tep_start
-
units:
ns
-
contentType:
auxiliaryInformation
-
long_name:
TEP Window Start
-
description:
The start time of the TEP removal window.
-
source:
Atmosphere ATBD
/ancillary_data/atmosphere/receiver_optical_throughput[
0
..0]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/atmosphere/receiver_optical_throughput
-
units:
1
-
contentType:
auxiliaryInformation
-
description:
Nominal Receiver Optics Throughput
-
source:
Atmosphere ATBD
-
long_name:
Receiver Optics Throughput
/ancillary_data/atmosphere/atlas_atm_shot_sum_25hz[
0
..0]
(Type is Int32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/atmosphere/atlas_atm_shot_sum_25hz
-
units:
counts
-
contentType:
auxiliaryInformation
-
description:
Number of shots summed to compute an ATM histogram at 25 hz (nominal)
-
source:
Atmosphere ATBD
-
long_name:
Number of shots at 25hz
/ancillary_data/atmosphere/telescope_area[
0
..0]
(Type is Float64)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/atmosphere/telescope_area
-
units:
sq meters
-
contentType:
auxiliaryInformation
-
long_name:
Telescope Effective Area
-
description:
Effective collection area of telescope (At)
-
source:
Atmosphere ATBD
/ancillary_data/atmosphere/chappius_coef[
0
..0]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/atmosphere/chappius_coef
-
units:
1
-
contentType:
auxiliaryInformation
-
long_name:
Chappius Coefficient
-
description:
Chappius ozone absorption coefficient
-
source:
Atmosphere ATBD
/ancillary_data/atmosphere/grd_thres_atl03[
0
..0]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/atmosphere/grd_thres_atl03
-
units:
1
-
contentType:
auxiliaryInformation
-
long_name:
Ground Threshold using ATL03 signal
-
description:
Threshold for Ground detection (photons/bin) when using ATL03-classified signal
-
source:
Atmosphere ATBD section 2
/ancillary_data/atmosphere/cal_scat_ratio[
0
..0]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/atmosphere/cal_scat_ratio
-
units:
1
-
contentType:
auxiliaryInformation
-
long_name:
Cal Scat Ratio
-
description:
Calibration Zone (13 to 11 km) aerosol scattering ratio
-
source:
Atmosphere ATBD section 2
/ancillary_data/atmosphere/planck_const[
0
..0]
(Type is Float64)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/atmosphere/planck_const
-
units:
Js
-
contentType:
auxiliaryInformation
-
long_name:
Planck constant (h)
-
description:
Planck constant (h)
-
source:
Atmosphere ATBD section 2
/ancillary_data/atmosphere/detector_efficiency[
0
..0]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/atmosphere/detector_efficiency
-
units:
1
-
contentType:
auxiliaryInformation
-
long_name:
Detector Quantum Efficiency
-
description:
Detector quantum efficiency (Qe)
-
source:
Atmosphere ATBD
/ancillary_data/atmosphere/atm_pulse_ns[
0
..0]
(Type is Float64)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/atmosphere/atm_pulse_ns
-
units:
sq meters
-
contentType:
auxiliaryInformation
-
long_name:
Pulse Time
-
description:
The time between ATLAS pulses.
-
source:
Atmosphere ATBD
/ancillary_data/atmosphere/speed_of_light[
0
..0]
(Type is Float64)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/atmosphere/speed_of_light
-
units:
meters/second
-
contentType:
auxiliaryInformation
-
long_name:
Speed of light (c)
-
description:
Speed of light (c)
-
source:
Globals
/ancillary_data/atmosphere/backg_select[
0
..0]
(Type is Int32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/atmosphere/backg_select
-
units:
1
-
contentType:
auxiliaryInformation
-
long_name:
background method used
-
description:
The background method used in calculation of NRB
-
source:
Atmosphere ATBD section 3.3.4
/ancillary_data/atmosphere/dead_time_sfac[
0
..0]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/atmosphere/dead_time_sfac
-
units:
1
-
contentType:
auxiliaryInformation
-
long_name:
Dead Time Signal Factor
-
description:
Dead time signal factor
-
source:
Atmosphere ATBD section 2
/ancillary_data/atmosphere/seg_pct_thres[
0
..0]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/atmosphere/seg_pct_thres
-
units:
1
-
contentType:
auxiliaryInformation
-
long_name:
Segment percent threshold
-
description:
Segment percent threshold
-
source:
Atmosphere ATBD
/ancillary_data/atmosphere/cal_lat_bound[
0
..0]
(Type is Float64)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/atmosphere/cal_lat_bound
-
units:
degrees
-
contentType:
auxiliaryInformation
-
long_name:
Cal Latitude Bound
-
description:
The latitude boundary for calibration calculation
-
source:
Atmosphere ATBD section 2
/ancillary_data/atmosphere/cal_bot_h[
0
..0]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/atmosphere/cal_bot_h
-
units:
meters
-
contentType:
auxiliaryInformation
-
long_name:
Bottom height of Cal zone
-
description:
Bottom height of the calibration zone
-
source:
Atmosphere ATBD section 2
/ancillary_data/atmosphere/pi[
0
..0]
(Type is Float64)
/ancillary_data/atmosphere/atm_laser_wavelength_m[
0
..0]
(Type is Float64)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/atmosphere/atm_laser_wavelength_m
-
units:
meters
-
contentType:
auxiliaryInformation
-
description:
ATLAS Laser wavelength, in meters
-
source:
Atmosphere ATBD
-
long_name:
Laser Wavelength (m)
/ancillary_data/atmosphere/cal_solar_angle_limit[
0
..0]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/atmosphere/cal_solar_angle_limit
-
units:
degrees
-
contentType:
auxiliaryInformation
-
long_name:
Cal Solar Angle Limit
-
description:
Minimum solar zenith angle for calibration calculation
-
source:
Atmosphere ATBD section 2
/ancillary_data/atlas_sdp_gps_epoch[
0
..0]
(Type is Float64)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/atlas_sdp_gps_epoch
-
units:
seconds since 1980-01-06T00:00:00.000000Z
-
contentType:
auxiliaryInformation
-
long_name:
ATLAS Epoch Offset
-
description:
Number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS Standard Data Product (SDP) epoch (2018-01-01:T00.00.00.000000 UTC). Add this value to delta time parameters to compute full gps_seconds (relative to the GPS epoch) for each data point.
-
source:
Operations
/ancillary_data/end_rgt[
0
..0]
(Type is Int32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/end_rgt
-
units:
1
-
contentType:
auxiliaryInformation
-
long_name:
Ending Reference Groundtrack
-
description:
The ending reference groundtrack (RGT) number associated with the data contained within this granule. There are 1387 reference groundtrack in the ICESat-2 repeat orbit. The reference groundtrack increments each time the spacecraft completes a full orbit of the Earth and resets to 1 each time the spacecraft completes a full cycle.
-
source:
Derived
-
valid_min:
1
-
valid_max:
1387
/ancillary_data/end_orbit[
0
..0]
(Type is Int32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/end_orbit
-
units:
1
-
contentType:
auxiliaryInformation
-
description:
The ending orbit number associated with the data contained within this granule. The orbit number increments each time the spacecraft completes a full orbit of the Earth.
-
source:
Derived
-
long_name:
Ending Orbit Number
/ancillary_data/start_cycle[
0
..0]
(Type is Int32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/start_cycle
-
units:
1
-
contentType:
auxiliaryInformation
-
long_name:
Starting Cycle
-
description:
The starting cycle number associated with the data contained within this granule. The cycle number is the counter of the number of 91-day repeat cycles completed by the mission.
-
source:
Derived
-
valid_min:
0
-
valid_max:
99
/ancillary_data/data_end_utc[
0
..0]
(Type is String)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/data_end_utc
-
units:
1
-
contentType:
auxiliaryInformation
-
long_name:
End UTC Time of Granule (CCSDS-A, Actual)
-
description:
UTC (in CCSDS-A format) of the last data point within the granule.
-
source:
Derived
/ancillary_data/control[
0
..0]
(Type is String)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/control
-
units:
1
-
contentType:
auxiliaryInformation
-
long_name:
Control File
-
description:
PGE-specific control file used to generate this granule. To re-use, replace breaks (BR) with linefeeds.
-
source:
Operations
/ancillary_data/start_gpssow[
0
..0]
(Type is Float64)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/start_gpssow
-
units:
seconds
-
contentType:
auxiliaryInformation
-
long_name:
Start GPS SOW of Granule (Actual)
-
description:
GPS seconds-of-week of the first data point in the granule.
-
source:
Derived
/ancillary_data/granule_end_utc[
0
..0]
(Type is String)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/granule_end_utc
-
units:
1
-
contentType:
auxiliaryInformation
-
long_name:
End UTC Time of Granule (CCSDS-A, Requested)
-
description:
Requested end time (in UTC CCSDS-A) of this granule.
-
source:
Derived
/ancillary_data/end_cycle[
0
..0]
(Type is Int32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/end_cycle
-
units:
1
-
contentType:
auxiliaryInformation
-
long_name:
Ending Cycle
-
description:
The ending cycle number associated with the data contained within this granule. The cycle number is the counter of the number of 91-day repeat cycles completed by the mission.
-
source:
Derived
-
valid_min:
0
-
valid_max:
99
/ancillary_data/granule_start_utc[
0
..0]
(Type is String)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/granule_start_utc
-
units:
1
-
contentType:
auxiliaryInformation
-
long_name:
Start UTC Time of Granule (CCSDS-A, Requested)
-
description:
Requested start time (in UTC CCSDS-A) of this granule.
-
source:
Derived
/ancillary_data/start_geoseg[
0
..0]
(Type is Int32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/start_geoseg
-
units:
1
-
contentType:
auxiliaryInformation
-
long_name:
Starting Geolocation Segment
-
description:
The starting geolocation segment number associated with the data contained within this granule. ICESat granule geographic regions are further refined by geolocation segments. During the geolocation process, a geolocation segment is created approximately every 20m from the start of the orbit to the end. The geolocation segments help align the ATLAS strong a weak beams and provide a common segment length for the L2 and higher products. The geolocation segment indices differ slightly from orbit-to-orbit because of the irregular shape of the Earth. The geolocation segment indices on ATL01 and ATL02 are only approximate because beams have not been aligned at the time of their creation.
-
source:
Derived
/ancillary_data/start_orbit[
0
..0]
(Type is Int32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/start_orbit
-
units:
1
-
contentType:
auxiliaryInformation
-
long_name:
Starting Orbit Number
-
description:
The starting orbit number associated with the data contained within this granule. The orbit number increments each time the spacecraft completes a full orbit of the Earth.
-
source:
Derived
/ancillary_data/data_start_utc[
0
..0]
(Type is String)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/data_start_utc
-
units:
1
-
contentType:
auxiliaryInformation
-
long_name:
Start UTC Time of Granule (CCSDS-A, Actual)
-
description:
UTC (in CCSDS-A format) of the first data point within the granule.
-
source:
Derived
/ancillary_data/end_gpsweek[
0
..0]
(Type is Int32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/end_gpsweek
-
units:
weeks from 1980-01-06
-
contentType:
auxiliaryInformation
-
long_name:
Ending GPSWeek of Granule (Actual)
-
description:
GPS week number of the last data point in the granule.
-
source:
Derived
/ancillary_data/start_rgt[
0
..0]
(Type is Int32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/start_rgt
-
units:
1
-
contentType:
auxiliaryInformation
-
long_name:
Starting Reference Groundtrack
-
description:
The starting reference groundtrack (RGT) number associated with the data contained within this granule. There are 1387 reference groundtrack in the ICESat-2 repeat orbit. The reference groundtrack increments each time the spacecraft completes a full orbit of the Earth and resets to 1 each time the spacecraft completes a full cycle.
-
source:
Derived
-
valid_min:
1
-
valid_max:
1387
/ancillary_data/end_gpssow[
0
..0]
(Type is Float64)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/end_gpssow
-
units:
seconds
-
contentType:
auxiliaryInformation
-
long_name:
Ending GPS SOW of Granule (Actual)
-
description:
GPS seconds-of-week of the last data point in the granule.
-
source:
Derived
/ancillary_data/qa_at_interval[
0
..0]
(Type is Float64)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/qa_at_interval
-
units:
1
-
contentType:
auxiliaryInformation
-
long_name:
QA Along-Track Interval
-
description:
Statistics time interval for along-track QA data.
-
source:
control
/ancillary_data/start_region[
0
..0]
(Type is Int32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/start_region
-
units:
1
-
contentType:
auxiliaryInformation
-
long_name:
Starting Region
-
description:
The starting product-specific region number associated with the data contained within this granule. ICESat-2 data products are separated by geographic regions. The data contained within a specific region are the same for ATL01 and ATL02. ATL03 regions differ slightly because of different geolocation segment locations caused by the irregular shape of the Earth. The region indices for other products are completely independent.
-
source:
Derived
/ancillary_data/start_gpsweek[
0
..0]
(Type is Int32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ancillary_data/start_gpsweek
-
units:
weeks from 1980-01-06
-
contentType:
auxiliaryInformation
-
long_name:
Start GPSWeek of Granule (Actual)
-
description:
GPS week number of the first data point in the granule.
-
source:
Derived
/ds_va_bin_h[
0
..699]
(Type is Float32)
-
attributes
-
HDF5_OBJ_FULLPATH:
/ds_va_bin_h
-
units:
meters
-
contentType:
auxiliaryInformation
-
long_name:
VA Bin Height Dimension Scale
-
description:
Dimension scale containing the heights of the vertically-aligned bins.
-
source:
Atmosphere ATBD
-
valid_min:
1.
-
valid_max:
700.
-
CLASS:
DIMENSION_SCALE
-
NAME:
/ds_va_bin_h
