Dataset Information

HDF5_OBJ_FULLPATH: H5_GLOBAL
Source: v17.11.1
Institution: NASA Global Modeling and Assimilation Office
History: File written by ldas2daac.x
Comment: HDF-5
Filename: /discover/nobackup/projects/gmao/smap/SMAP_L4/L4_SM/Vv7031/aup/Y2024/M06/D19/SMAP_L4_SM_aup_20240619T000000_Vv7031_001.h5
Title: SMAP L4_SM Analysis Update (AUP) Data Granule
Conventions: CF
References: see SMAP L4_SM Product Specification Documentation
Contact: http://gmao.gsfc.nasa.gov
HDF5_OBJ_FULLPATH: /EASE2_global_projection
grid_mapping_name: lambert_cylindrical_equal_area
standard_parallel: 30.
false_easting: 0.
false_northing: 0.
longitude_of_central_meridian: 0.


Variables in this Dataset

/y: Array of 64 bit Reals [ = 0..1623]
HDF5_OBJ_FULLPATH: /y
long_name: Y coordinate of cell center in EASE 2.0 global projection
standard_name: projection_y_coordinate
axis: Y
units: m
CLASS: DIMENSION_SCALE
NAME: y
/Forecast_Data/sm_surface_forecast: Array of 32 bit Reals [ = 0..1623][ = 0..3855]
HDF5_OBJ_FULLPATH: /Forecast_Data/sm_surface_forecast
long_name: Catchment model forecast surface soil moisture (0-5 cm)
valid_max: 0.8999999762
_FillValue: -9999.
fmissing_value: -9999.
missing_value: -9999.
DIMENSION_LABELS: y, x
units: m3 m-3
grid_mapping: EASE2_global_projection
coordinates: /cell_lat /cell_lon
valid_min: 0.
/Forecast_Data/tb_v_forecast: Array of 32 bit Reals [ = 0..1623][ = 0..3855]
HDF5_OBJ_FULLPATH: /Forecast_Data/tb_v_forecast
long_name: Composite resolution Catchment model forecast 1.41 GHz V-pol brightness temperature. Model forecast brightness temperatures that correspond to 36 km observations from the L1C_TB product are aggregated from 9 km to 36 km and then posted at 9 km for convenience. Output is only stored at times and locations for which input SMAP Level 1 or Level 2 data are ingested. If more than one overpass occurs for a given grid cell within the assimilation time window, output represents average over all overpass times.
valid_max: 350.
_FillValue: -9999.
fmissing_value: -9999.
missing_value: -9999.
DIMENSION_LABELS: y, x
units: K
grid_mapping: EASE2_global_projection
coordinates: /cell_lat /cell_lon
valid_min: 100.
/Forecast_Data/surface_temp_forecast: Array of 32 bit Reals [ = 0..1623][ = 0..3855]
HDF5_OBJ_FULLPATH: /Forecast_Data/surface_temp_forecast
long_name: Catchment model forecast surface temperature
valid_max: 350.
_FillValue: -9999.
fmissing_value: -9999.
missing_value: -9999.
DIMENSION_LABELS: y, x
units: K
grid_mapping: EASE2_global_projection
coordinates: /cell_lat /cell_lon
valid_min: 180.
/Forecast_Data/tb_v_forecast_ensstd: Array of 32 bit Reals [ = 0..1623][ = 0..3855]
HDF5_OBJ_FULLPATH: /Forecast_Data/tb_v_forecast_ensstd
long_name: Uncertainty (ensemble std-dev) of tb_v_forecast. Model forecast brightness temperatures that correspond to 36 km observations from the L1C_TB product are aggregated from 9 km to 36 km and then posted at 9 km for convenience. Output is only stored at times and locations for which input SMAP Level 1 or Level 2 data are ingested. If more than one overpass occurs for a given grid cell within the assimilation time window, output represents average over all overpass times.
valid_max: 50.
_FillValue: -9999.
fmissing_value: -9999.
missing_value: -9999.
DIMENSION_LABELS: y, x
units: K
grid_mapping: EASE2_global_projection
coordinates: /cell_lat /cell_lon
valid_min: 0.
/Forecast_Data/soil_temp_layer1_forecast: Array of 32 bit Reals [ = 0..1623][ = 0..3855]
HDF5_OBJ_FULLPATH: /Forecast_Data/soil_temp_layer1_forecast
long_name: Catchment model forecast soil temperature in layer 1 of soil heat diffusion model
valid_max: 340.
_FillValue: -9999.
fmissing_value: -9999.
missing_value: -9999.
DIMENSION_LABELS: y, x
units: K
grid_mapping: EASE2_global_projection
coordinates: /cell_lat /cell_lon
valid_min: 210.
/Forecast_Data/sm_profile_forecast: Array of 32 bit Reals [ = 0..1623][ = 0..3855]
HDF5_OBJ_FULLPATH: /Forecast_Data/sm_profile_forecast
long_name: Catchment model forecast total profile soil moisture (0 cm to model bedrock depth)
valid_max: 0.8999999762
_FillValue: -9999.
fmissing_value: -9999.
missing_value: -9999.
DIMENSION_LABELS: y, x
units: m3 m-3
grid_mapping: EASE2_global_projection
coordinates: /cell_lat /cell_lon
valid_min: 0.
/Forecast_Data/tb_h_forecast: Array of 32 bit Reals [ = 0..1623][ = 0..3855]
HDF5_OBJ_FULLPATH: /Forecast_Data/tb_h_forecast
long_name: Composite resolution Catchment model forecast 1.41 GHz H-pol brightness temperature. Model forecast brightness temperatures that correspond to 36 km observations from the L1C_TB product are aggregated from 9 km to 36 km and then posted at 9 km for convenience. Output is only stored at times and locations for which input SMAP Level 1 or Level 2 data are ingested. If more than one overpass occurs for a given grid cell within the assimilation time window, output represents average over all overpass times.
valid_max: 350.
_FillValue: -9999.
fmissing_value: -9999.
missing_value: -9999.
DIMENSION_LABELS: y, x
units: K
grid_mapping: EASE2_global_projection
coordinates: /cell_lat /cell_lon
valid_min: 100.
/Forecast_Data/sm_rootzone_forecast: Array of 32 bit Reals [ = 0..1623][ = 0..3855]
HDF5_OBJ_FULLPATH: /Forecast_Data/sm_rootzone_forecast
long_name: Catchment model forecast root zone soil moisture (0-100 cm)
valid_max: 0.8999999762
_FillValue: -9999.
fmissing_value: -9999.
missing_value: -9999.
DIMENSION_LABELS: y, x
units: m3 m-3
grid_mapping: EASE2_global_projection
coordinates: /cell_lat /cell_lon
valid_min: 0.
/Forecast_Data/tb_h_forecast_ensstd: Array of 32 bit Reals [ = 0..1623][ = 0..3855]
HDF5_OBJ_FULLPATH: /Forecast_Data/tb_h_forecast_ensstd
long_name: Uncertainty (ensemble std-dev) of tb_h_forecast. Model forecast brightness temperatures that correspond to 36 km observations from the L1C_TB product are aggregated from 9 km to 36 km and then posted at 9 km for convenience. Output is only stored at times and locations for which input SMAP Level 1 or Level 2 data are ingested. If more than one overpass occurs for a given grid cell within the assimilation time window, output represents average over all overpass times.
valid_max: 50.
_FillValue: -9999.
fmissing_value: -9999.
missing_value: -9999.
DIMENSION_LABELS: y, x
units: K
grid_mapping: EASE2_global_projection
coordinates: /cell_lat /cell_lon
valid_min: 0.
/time: Array of 64 bit Reals [ = 0..0]
HDF5_OBJ_FULLPATH: /time
long_name: Time
units: seconds since 2000-01-01 11:58:55.816
actual_range: 772027200., 772027200.
delta_t: 0000-00-00 03:00:00
/EASE2_global_projection: Array of Strings [ = 0..0]
HDF5_OBJ_FULLPATH: /EASE2_global_projection
grid_mapping_name: lambert_cylindrical_equal_area
standard_parallel: 30.
false_easting: 0.
false_northing: 0.
longitude_of_central_meridian: 0.
/Analysis_Data/sm_surface_analysis_ensstd: Array of 32 bit Reals [ = 0..1623][ = 0..3855]
HDF5_OBJ_FULLPATH: /Analysis_Data/sm_surface_analysis_ensstd
long_name: Uncertainty of analysis surface soil moisture (0-5 cm; ensemble std-dev)
valid_max: 1.
_FillValue: -9999.
fmissing_value: -9999.
missing_value: -9999.
DIMENSION_LABELS: y, x
units: m3 m-3
grid_mapping: EASE2_global_projection
coordinates: /cell_lat /cell_lon
valid_min: 0.
/Analysis_Data/surface_temp_analysis_ensstd: Array of 32 bit Reals [ = 0..1623][ = 0..3855]
HDF5_OBJ_FULLPATH: /Analysis_Data/surface_temp_analysis_ensstd
long_name: Uncertainty of analysis surface temperature (ensemble std-dev)
valid_max: 50.
_FillValue: -9999.
fmissing_value: -9999.
missing_value: -9999.
DIMENSION_LABELS: y, x
units: K
grid_mapping: EASE2_global_projection
coordinates: /cell_lat /cell_lon
valid_min: 0.
/Analysis_Data/sm_rootzone_analysis_ensstd: Array of 32 bit Reals [ = 0..1623][ = 0..3855]
HDF5_OBJ_FULLPATH: /Analysis_Data/sm_rootzone_analysis_ensstd
long_name: Uncertainty of analysis root zone soil moisture (0-100 cm; ensemble std-dev)
valid_max: 1.
_FillValue: -9999.
fmissing_value: -9999.
missing_value: -9999.
DIMENSION_LABELS: y, x
units: m3 m-3
grid_mapping: EASE2_global_projection
coordinates: /cell_lat /cell_lon
valid_min: 0.
/Analysis_Data/sm_surface_analysis: Array of 32 bit Reals [ = 0..1623][ = 0..3855]
HDF5_OBJ_FULLPATH: /Analysis_Data/sm_surface_analysis
long_name: Analysis surface soil moisture (0-5 cm)
valid_max: 0.8999999762
_FillValue: -9999.
fmissing_value: -9999.
missing_value: -9999.
DIMENSION_LABELS: y, x
units: m3 m-3
grid_mapping: EASE2_global_projection
coordinates: /cell_lat /cell_lon
valid_min: 0.
/Analysis_Data/sm_profile_analysis_ensstd: Array of 32 bit Reals [ = 0..1623][ = 0..3855]
HDF5_OBJ_FULLPATH: /Analysis_Data/sm_profile_analysis_ensstd
long_name: Uncertainty of analysis total profile soil moisture (0 cm to model bedrock depth; ensemble std-dev)
valid_max: 1.
_FillValue: -9999.
fmissing_value: -9999.
missing_value: -9999.
DIMENSION_LABELS: y, x
units: m3 m-3
grid_mapping: EASE2_global_projection
coordinates: /cell_lat /cell_lon
valid_min: 0.
/Analysis_Data/sm_rootzone_analysis: Array of 32 bit Reals [ = 0..1623][ = 0..3855]
HDF5_OBJ_FULLPATH: /Analysis_Data/sm_rootzone_analysis
long_name: Analysis root zone soil moisture (0-100 cm)
valid_max: 0.8999999762
_FillValue: -9999.
fmissing_value: -9999.
missing_value: -9999.
DIMENSION_LABELS: y, x
units: m3 m-3
grid_mapping: EASE2_global_projection
coordinates: /cell_lat /cell_lon
valid_min: 0.
/Analysis_Data/sm_profile_analysis: Array of 32 bit Reals [ = 0..1623][ = 0..3855]
HDF5_OBJ_FULLPATH: /Analysis_Data/sm_profile_analysis
long_name: Analysis total profile soil moisture (0 cm to model bedrock depth)
valid_max: 0.8999999762
_FillValue: -9999.
fmissing_value: -9999.
missing_value: -9999.
DIMENSION_LABELS: y, x
units: m3 m-3
grid_mapping: EASE2_global_projection
coordinates: /cell_lat /cell_lon
valid_min: 0.
/Analysis_Data/soil_temp_layer1_analysis: Array of 32 bit Reals [ = 0..1623][ = 0..3855]
HDF5_OBJ_FULLPATH: /Analysis_Data/soil_temp_layer1_analysis
long_name: Analysis soil temperature in layer 1 of soil heat diffusion model
valid_max: 340.
_FillValue: -9999.
fmissing_value: -9999.
missing_value: -9999.
DIMENSION_LABELS: y, x
units: K
grid_mapping: EASE2_global_projection
coordinates: /cell_lat /cell_lon
valid_min: 210.
/Analysis_Data/soil_temp_layer1_analysis_ensstd: Array of 32 bit Reals [ = 0..1623][ = 0..3855]
HDF5_OBJ_FULLPATH: /Analysis_Data/soil_temp_layer1_analysis_ensstd
long_name: Uncertainty of analysis soil temperature in layer 1 of soil heat diffusion model (ensemble std-dev)
valid_max: 50.
_FillValue: -9999.
fmissing_value: -9999.
missing_value: -9999.
DIMENSION_LABELS: y, x
units: K
grid_mapping: EASE2_global_projection
coordinates: /cell_lat /cell_lon
valid_min: 0.
/Analysis_Data/surface_temp_analysis: Array of 32 bit Reals [ = 0..1623][ = 0..3855]
HDF5_OBJ_FULLPATH: /Analysis_Data/surface_temp_analysis
long_name: Analysis surface temperature
valid_max: 350.
_FillValue: -9999.
fmissing_value: -9999.
missing_value: -9999.
DIMENSION_LABELS: y, x
units: K
grid_mapping: EASE2_global_projection
coordinates: /cell_lat /cell_lon
valid_min: 180.
/cell_lat: Array of 32 bit Reals [ = 0..1623][ = 0..3855]
HDF5_OBJ_FULLPATH: /cell_lat
long_name: The geodetic latitude of the center of each cell in the cylindrical 9 km Earth-fixed EASE-Grid 2.0. Zero latitude represents the Equator. Positive latitudes represent locations North of the Equator. Negative latitudes represent locations South of the Equator.
valid_max: 90.
_FillValue: -9999.
fmissing_value: -9999.
missing_value: -9999.
DIMENSION_LABELS: y, x
units: degrees
grid_mapping: EASE2_global_projection
valid_min: -90.
/cell_row: Array of 32 bit Unsigned integers [ = 0..1623][ = 0..3855]
HDF5_OBJ_FULLPATH: /cell_row
long_name: The row index of each cell in the cylindrical 9 km Earth-fixed EASE-Grid 2.0. Type is Unsigned32.
valid_max: 1623
_FillValue: 4294967294
fmissing_value: 4294967294
missing_value: 4294967294
DIMENSION_LABELS: y, x
units: dimensionless
grid_mapping: EASE2_global_projection
coordinates: /cell_lat /cell_lon
valid_min: 0
/cell_lon: Array of 32 bit Reals [ = 0..1623][ = 0..3855]
HDF5_OBJ_FULLPATH: /cell_lon
long_name: The longitude of the center of each cell in the cylindrical 9 km Earth-fixed EASE-Grid 2.0. Zero longitude represents the Prime Meridian. Positive longitudes represent locations to the East of the Prime Meridian. Negative longitudes represent locations to the West of the Prime Meridian.
valid_max: 179.9989929
_FillValue: -9999.
fmissing_value: -9999.
missing_value: -9999.
DIMENSION_LABELS: y, x
units: degrees
grid_mapping: EASE2_global_projection
valid_min: -180.
/cell_column: Array of 32 bit Unsigned integers [ = 0..1623][ = 0..3855]
HDF5_OBJ_FULLPATH: /cell_column
long_name: The column index of each cell in the cylindrical 9 km Earth-fixed EASE-Grid 2.0. Type is Unsigned32.
valid_max: 3855
_FillValue: 4294967294
fmissing_value: 4294967294
missing_value: 4294967294
DIMENSION_LABELS: y, x
units: dimensionless
grid_mapping: EASE2_global_projection
coordinates: /cell_lat /cell_lon
valid_min: 0
/Observations_Data/tb_v_obs: Array of 32 bit Reals [ = 0..1623][ = 0..3855]
HDF5_OBJ_FULLPATH: /Observations_Data/tb_v_obs
long_name: Composite resolution observed (L2_SM_AP or L1C_TB) V-pol brightness temperature, represented as the average of fore and aft observations from the SMAP antenna. Observed brightness temperatures that originate from 36 km L1C_TB files are posted at 9 km here for convenience (as average over the fore and aft brightness temperatures, which are stored separately in the L1C_TB product). Output is only stored at times and locations for which input SMAP Level 1 or Level 2 data are ingested. If more than one overpass occurs for a given grid cell within the assimilation time window, output represents average over all overpass times.
valid_max: 350.
_FillValue: -9999.
fmissing_value: -9999.
missing_value: -9999.
DIMENSION_LABELS: y, x
units: K
grid_mapping: EASE2_global_projection
coordinates: /cell_lat /cell_lon
valid_min: 100.
/Observations_Data/tb_v_obs_time_sec: Array of 64 bit Reals [ = 0..1623][ = 0..3855]
HDF5_OBJ_FULLPATH: /Observations_Data/tb_v_obs_time_sec
long_name: Time values as counts of International System (SI) seconds based on the J2000 epoch in Ephemeris Time (ET). The J2000 epoch starting point is January 1, 2000 at 12:00 ET, which translates to January 1, 2000 at 11:58:55.816 Universal Coordinated Time (UTC). Type is Float64.
valid_max: 946000000.
_FillValue: -9999.
fmissing_value: -9999.
missing_value: -9999.
DIMENSION_LABELS: y, x
units: s
grid_mapping: EASE2_global_projection
coordinates: /cell_lat /cell_lon
valid_min: 465156000.
/Observations_Data/tb_h_obs: Array of 32 bit Reals [ = 0..1623][ = 0..3855]
HDF5_OBJ_FULLPATH: /Observations_Data/tb_h_obs
long_name: Composite resolution observed (L2_SM_AP or L1C_TB) H-pol brightness temperature, represented as the average of fore and aft observations from the SMAP antenna. Observed brightness temperatures that originate from 36 km L1C_TB files are posted at 9 km here for convenience (as average over the fore and aft brightness temperatures, which are stored separately in the L1C_TB product). Output is only stored at times and locations for which input SMAP Level 1 or Level 2 data are ingested. If more than one overpass occurs for a given grid cell within the assimilation time window, output represents average over all overpass times.
valid_max: 350.
_FillValue: -9999.
fmissing_value: -9999.
missing_value: -9999.
DIMENSION_LABELS: y, x
units: K
grid_mapping: EASE2_global_projection
coordinates: /cell_lat /cell_lon
valid_min: 100.
/Observations_Data/tb_h_orbit_flag: Array of 32 bit Unsigned integers [ = 0..1623][ = 0..3855]
HDF5_OBJ_FULLPATH: /Observations_Data/tb_h_orbit_flag
long_name: Flag indicating the orbit direction of H-pol brightness temperature composite fields (tb_h_obs, tb_h_forecast, etc.): 0=average over ascending and descending orbits, 1=ascending orbits only, 2=descending orbits only. Type is Unsigned32.
valid_max: 2
_FillValue: 4294967294
fmissing_value: 4294967294
missing_value: 4294967294
DIMENSION_LABELS: y, x
units: dimensionless
grid_mapping: EASE2_global_projection
coordinates: /cell_lat /cell_lon
valid_min: 0
/Observations_Data/tb_h_resolution_flag: Array of 32 bit Unsigned integers [ = 0..1623][ = 0..3855]
HDF5_OBJ_FULLPATH: /Observations_Data/tb_h_resolution_flag
long_name: Flag indicating the effective resolution of H-pol brightness temperature composite fields (tb_h_obs, tb_h_forecast, etc.): 1=36 km, 2=9 km. Type is Unsigned32. Output is only stored at times and locations for which input SMAP Level 1 or Level 2 data are ingested. If more than one overpass occurs for a given grid cell within the assimilation time window, output represents average over all overpass times.
valid_max: 2
_FillValue: 4294967294
fmissing_value: 4294967294
missing_value: 4294967294
DIMENSION_LABELS: y, x
units: dimensionless
grid_mapping: EASE2_global_projection
coordinates: /cell_lat /cell_lon
valid_min: 1
/Observations_Data/tb_h_obs_errstd: Array of 32 bit Reals [ = 0..1623][ = 0..3855]
HDF5_OBJ_FULLPATH: /Observations_Data/tb_h_obs_errstd
long_name: Observation error std-dev for tb_h_obs_scaled. Observed brightness temperatures that originate from 36 km L1C_TB files are posted at 9 km here for convenience (as average over the fore and aft brightness temperatures, which are stored separately in the L1C_TB product). Output is only stored at times and locations for which input SMAP Level 1 or Level 2 data are ingested. If more than one overpass occurs for a given grid cell within the assimilation time window, output represents average over all overpass times.
valid_max: 50.
_FillValue: -9999.
fmissing_value: -9999.
missing_value: -9999.
DIMENSION_LABELS: y, x
units: K
grid_mapping: EASE2_global_projection
coordinates: /cell_lat /cell_lon
valid_min: 0.
/Observations_Data/tb_v_orbit_flag: Array of 32 bit Unsigned integers [ = 0..1623][ = 0..3855]
HDF5_OBJ_FULLPATH: /Observations_Data/tb_v_orbit_flag
long_name: Flag indicating the orbit direction of V-pol brightness temperature composite fields (tb_v_obs, tb_v_forecast, etc.): 0=average over ascending and descending orbits, 1=ascending orbits only, 2=descending orbits only. Type is Unsigned32.
valid_max: 2
_FillValue: 4294967294
fmissing_value: 4294967294
missing_value: 4294967294
DIMENSION_LABELS: y, x
units: dimensionless
grid_mapping: EASE2_global_projection
coordinates: /cell_lat /cell_lon
valid_min: 0
/Observations_Data/tb_v_resolution_flag: Array of 32 bit Unsigned integers [ = 0..1623][ = 0..3855]
HDF5_OBJ_FULLPATH: /Observations_Data/tb_v_resolution_flag
long_name: Flag indicating the effective resolution of V-pol brightness temperature composite fields (tb_v_obs, tb_v_forecast, etc.): 1=36 km, 2=9 km. Type is Unsigned32. Output is only stored at times and locations for which input SMAP Level 1 or Level 2 data are ingested. If more than one overpass occurs for a given grid cell within the assimilation time window, output represents average over all overpass times.
valid_max: 2
_FillValue: 4294967294
fmissing_value: 4294967294
missing_value: 4294967294
DIMENSION_LABELS: y, x
units: dimensionless
grid_mapping: EASE2_global_projection
coordinates: /cell_lat /cell_lon
valid_min: 1
/Observations_Data/tb_v_obs_assim: Array of 32 bit Reals [ = 0..1623][ = 0..3855]
HDF5_OBJ_FULLPATH: /Observations_Data/tb_v_obs_assim
long_name: Assimilated value after model-based quality control and climatological adjustment (scaling) of tb_v_obs for consistency with the land models seasonally varying mean brightness temperature climatology. Observed brightness temperatures that originate from 36 km L1C_TB files are posted at 9 km here for convenience (as average over the fore and aft brightness temperatures, which are stored separately in the L1C_TB product). Output is only stored at times and locations for which input SMAP Level 1 or Level 2 data are ingested. If more than one overpass occurs for a given grid cell within the assimilation time window, output represents average over all overpass times.
valid_max: 350.
_FillValue: -9999.
fmissing_value: -9999.
missing_value: -9999.
DIMENSION_LABELS: y, x
units: K
grid_mapping: EASE2_global_projection
coordinates: /cell_lat /cell_lon
valid_min: 100.
/Observations_Data/tb_h_obs_assim: Array of 32 bit Reals [ = 0..1623][ = 0..3855]
HDF5_OBJ_FULLPATH: /Observations_Data/tb_h_obs_assim
long_name: Assimilated value after model-based quality control and climatological adjustment (scaling) of tb_h_obs for consistency with the land models seasonally varying mean brightness temperature climatology. Observed brightness temperatures that originate from 36 km L1C_TB files are posted at 9 km here for convenience (as average over the fore and aft brightness temperatures, which are stored separately in the L1C_TB product). Output is only stored at times and locations for which input SMAP Level 1 or Level 2 data are ingested. If more than one overpass occurs for a given grid cell within the assimilation time window, output represents average over all overpass times.
valid_max: 350.
_FillValue: -9999.
fmissing_value: -9999.
missing_value: -9999.
DIMENSION_LABELS: y, x
units: K
grid_mapping: EASE2_global_projection
coordinates: /cell_lat /cell_lon
valid_min: 100.
/Observations_Data/tb_h_obs_time_sec: Array of 64 bit Reals [ = 0..1623][ = 0..3855]
HDF5_OBJ_FULLPATH: /Observations_Data/tb_h_obs_time_sec
long_name: Time values as counts of International System (SI) seconds based on the J2000 epoch in Ephemeris Time (ET). The J2000 epoch starting point is January 1, 2000 at 12:00 ET, which translates to January 1, 2000 at 11:58:55.816 Universal Coordinated Time (UTC). Type is Float64.
valid_max: 946000000.
_FillValue: -9999.
fmissing_value: -9999.
missing_value: -9999.
DIMENSION_LABELS: y, x
units: s
grid_mapping: EASE2_global_projection
coordinates: /cell_lat /cell_lon
valid_min: 465156000.
/Observations_Data/tb_v_obs_errstd: Array of 32 bit Reals [ = 0..1623][ = 0..3855]
HDF5_OBJ_FULLPATH: /Observations_Data/tb_v_obs_errstd
long_name: Observation error std-dev for tb_v_obs_scaled. Observed brightness temperatures that originate from 36 km L1C_TB files are posted at 9 km here for convenience (as average over the fore and aft brightness temperatures, which are stored separately in the L1C_TB product). Output is only stored at times and locations for which input SMAP Level 1 or Level 2 data are ingested. If more than one overpass occurs for a given grid cell within the assimilation time window, output represents average over all overpass times.
valid_max: 50.
_FillValue: -9999.
fmissing_value: -9999.
missing_value: -9999.
DIMENSION_LABELS: y, x
units: K
grid_mapping: EASE2_global_projection
coordinates: /cell_lat /cell_lon
valid_min: 0.
/x: Array of 64 bit Reals [ = 0..3855]
HDF5_OBJ_FULLPATH: /x
long_name: X coordinate of cell center in EASE 2.0 global projection
standard_name: projection_x_coordinate
axis: X
units: m
CLASS: DIMENSION_SCALE
NAME: x