| time_reference: | 1980-01-06T00:00:00Z |
| format_version: | 2 |
| product_type: | RADT |
| sdpc_version: | TEMPO_SDPC_v4.8.3 |
| scan_num: | 18 |
| granule_num: | 3 |
| processing_version: | 4 |
| scan_type: | 3 |
| time_coverage_start: | 2026-04-30T01:39:37Z |
| time_coverage_end: | 2026-04-30T01:52:08Z |
| time_coverage_start_since_epoch: | 1461548395.957442 |
| time_coverage_end_since_epoch: | 1461549146.310597 |
| production_date_time: | 2026-04-30T02:11:07Z |
| version_id: | 4 |
| pge_version: | 0.1.0 |
| shortname: | TEMPO_RADT_L1 |
| begin_date: | 2026-04-30 |
| begin_time: | 01:39:37 |
| end_date: | 2026-04-30 |
| end_time: | 01:52:08 |
| inr_status: | 2 |
| processing_level: | 1 |
| history: | 2026-04-30T02:11:14Z: /proj/sdpc_soft/install/gnu-rocky8/sdpc/v4p8p3/bin/L0_ccd -vv --Version 4 --config l0_ccd_drk.cfg -i @hk.lis --solar /proj/sdpc_archive/temposdpc/ops5/L1/IRR/D16908/20260423T040511Z/TEMPO_IRR_L1_V04_20260423T040511Z.nc --trend trend_params.nc -d /proj/sdpc_archive/temposdpc/ops5/L1/DRK/D16915/20260429T095813Z/TEMPO_DRK_L1_V04_20260429T095813Z.nc -o TEMPO_RADT_L1_V04_20260430T013937Z_S018G03.nc TEMPO_RADT_L0_V01_20260430T013937Z_S018G03.nc
2026-04-30T02:13:01Z: /proj/sdpc_soft/install/gnu-rocky8/sdpc/v4p8p3/bin/L1_inr_prep -v 1 -i /proj/sdpc_archive/ancillary/var/iers/files/bulletina_2026113_xxxix_017.txt TEMPO_RADT_L1_V04_20260430T013937Z_S018G03.nc
2026-04-30T02:18:15Z: /proj/sdpc_soft/install/gnu-rocky8/sdpc/v4p8p3/bin/L1_inr_post -vv -c /proj/sdpc/liveroot/temposdpc/ops5/etc/l1_inr_post.cfg -s /proj/sdpc_archive/ancillary/var/ims/2026/ims2026119_1km_v1.3.nc TEMPO_RADT_L1_V04_20260430T013937Z_S018G03.nc
|
| input_files: | TEMPO_RADT_L0_V01_20260430T013937Z_S018G03.nc, TEMPO_HK_L0_V01_20260430T013411Z.nc, TEMPO_HK_L0_V01_20260430T013841Z.nc, TEMPO_HK_L0_V01_20260430T014311Z.nc, TEMPO_HK_L0_V01_20260430T014753Z.nc, TEMPO_IRR_L1_V04_20260423T040511Z.nc, TEMPO_DRK_L1_V04_20260429T095813Z.nc, TEMPO_SMC_L0_V01_20260430T013540Z.nc, TEMPO_SMC_L0_V01_20260430T014038Z.nc, TEMPO_SMC_L0_V01_20260430T014441Z.nc, TEMPO_SMC_L0_V01_20260430T014938Z.nc, TEMPO_IRU_L0_V01_20260430T013509Z.nc, TEMPO_IRU_L0_V01_20260430T013925Z.nc, TEMPO_IRU_L0_V01_20260430T014341Z.nc, TEMPO_IRU_L0_V01_20260430T014741Z.nc, TEMPO_IRU_L0_V01_20260430T015156Z.nc |
| local_granule_id: | TEMPO_RADT_L1_V04_20260430T013937Z_S018G03.nc |
| Conventions: | CF-1.6, ACDD-1.3 |
| day_of_year: | Attribute elided: Unsupported attribute type (NC_INT64) |
| project: | TEMPO |
| platform: | Intelsat 40e |
| source: | UV-VIS hyperspectral imaging |
| institution: | Smithsonian Astrophysical Observatory |
| creator_url: | http://tempo.si.edu |
| title: | TEMPO Level 1 twilight radiance measurement |
| collection_shortname: | TEMPO_RADT_L1 |
| collection_version: | Attribute elided: Unsupported attribute type (NC_INT64) |
| keywords: | EARTH SCIENCE>SPECTRAL/ENGINEERING>VISIBLE WAVELENGTHS>VISIBLE RADIANCE, EARTH SCIENCE>SPECTRAL/ENGINEERING>ULTRAVIOLET WAVELENGTHS>ULTRAVIOLET RADIANCE |
| summary: | Level 1 twilight radiance files provide radiance measured during twilight hours to capture city lights at TEMPO’s native spatial resolution, ~10 km^2 at the center of the Field of Regard (FOR), for individual granules. Each granule covers the entire North-South TEMPO FOR but only a portion of the East-West FOR. The files are provided in netCDF4 format, and contain information on radiometrically calibrated and geolocated radiances for the UV and visible bands, corresponding noise, geolocation, viewing geometry, quality flags and other ancillary information. The product is produced using the L0-1b processor which includes image processing steps to produce radiometrically calibrated radiances with nominal navigation. Please refer to the ATBD for details. |
| coremetadata: |
GROUP = INVENTORYMETADATA
GROUPTYPE = MASTERGROUP
GROUP = ECSDATAGRANULE
OBJECT = LOCALGRANULEID
NUM_VAL = 1
VALUE = "TEMPO_RADT_L1_V04_20260430T013937Z_S018G03.nc"
END_OBJECT = LOCALGRANULEID
OBJECT = LOCALVERSIONID
NUM_VAL = 1
VALUE = ("RFC1321 MD5 = not yet calculated")
END_OBJECT = LOCALVERSIONID
OBJECT = PRODUCTIONDATETIME
NUM_VAL = 1
VALUE = "2026-04-30T02:11:07Z"
END_OBJECT = PRODUCTIONDATETIME
END_GROUP = ECSDATAGRANULE
GROUP = COLLECTIONDESCRIPTIONCLASS
OBJECT = SHORTNAME
NUM_VAL = 1
VALUE = "TEMPO_RADT_L1"
END_OBJECT = SHORTNAME
OBJECT = VERSIONID
NUM_VAL = 1
VALUE = 4
END_OBJECT = VERSIONID
END_GROUP = COLLECTIONDESCRIPTIONCLASS
GROUP = INPUTGRANULE
OBJECT = INPUTPOINTER
NUM_VAL = 16
VALUE = ("TEMPO_RADT_L0_V01_20260430T013937Z_S018G03.nc", "TEMPO_HK_L0_V01_20260430T013411Z.nc", "TEMPO_HK_L0_V01_20260430T013841Z.nc", "TEMPO_HK_L0_V01_20260430T014311Z.nc", "TEMPO_HK_L0_V01_20260430T014753Z.nc", "TEMPO_IRR_L1_V04_20260423T040511Z.nc", "TEMPO_DRK_L1_V04_20260429T095813Z.nc", "TEMPO_SMC_L0_V01_20260430T013540Z.nc", "TEMPO_SMC_L0_V01_20260430T014038Z.nc", "TEMPO_SMC_L0_V01_20260430T014441Z.nc", "TEMPO_SMC_L0_V01_20260430T014938Z.nc", "TEMPO_IRU_L0_V01_20260430T013509Z.nc", "TEMPO_IRU_L0_V01_20260430T013925Z.nc", "TEMPO_IRU_L0_V01_20260430T014341Z.nc", "TEMPO_IRU_L0_V01_20260430T014741Z.nc", "TEMPO_IRU_L0_V01_20260430T015156Z.nc")
END_OBJECT = INPUTPOINTER
END_GROUP = INPUTGRANULE
GROUP = SPATIALDOMAINCONTAINER
GROUP = HORIZONTALSPATIALDOMAINCONTAINER
GROUP = GPOLYGON
OBJECT = GPOLYGONCONTAINER
CLASS = "1"
GROUP = GRINGPOINT
CLASS = "1"
OBJECT = GRINGPOINTLONGITUDE
NUM_VAL = 16
CLASS = "1"
VALUE = (-103.1601, -101.8283, -100.6888, -99.7562, -98.9429, -98.3345, -97.8363, -97.4732, -97.2139, -92.0848, -92.1102, -92.2956, -92.6113, -93.0675, -103.1221, -103.1601)
END_OBJECT = GRINGPOINTLONGITUDE
OBJECT = GRINGPOINTLATITUDE
NUM_VAL = 16
CLASS = "1"
VALUE = (57.8383, 53.8585, 49.4598, 44.8112, 39.5318, 34.3516, 28.7184, 23.0695, 17.2029, 17.186, 26.9644, 38.7695, 48.9757, 57.6206, 57.8538, 57.8383)
END_OBJECT = GRINGPOINTLATITUDE
OBJECT = GRINGPOINTSEQUENCENO
NUM_VAL = 16
CLASS = "1"
VALUE = (1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
END_OBJECT = GRINGPOINTSEQUENCENO
END_GROUP = GRINGPOINT
GROUP = GRING
CLASS = "1"
OBJECT = EXCLUSIONGRINGFLAG
NUM_VAL = 1
VALUE = "N"
CLASS = "1"
END_OBJECT = EXCLUSIONGRINGFLAG
END_GROUP = GRING
END_OBJECT = GPOLYGONCONTAINER
END_GROUP = GPOLYGON
END_GROUP = HORIZONTALSPATIALDOMAINCONTAINER
END_GROUP = SPATIALDOMAINCONTAINER
GROUP = RANGEDATETIME
OBJECT = RANGEENDINGDATE
NUM_VAL = 1
VALUE = "2026-04-30"
END_OBJECT = RANGEENDINGDATE
OBJECT = RANGEENDINGTIME
NUM_VAL = 1
VALUE = "01:52:08"
END_OBJECT = RANGEENDINGTIME
OBJECT = RANGEBEGINNINGDATE
NUM_VAL = 1
VALUE = "2026-04-30"
END_OBJECT = RANGEBEGINNINGDATE
OBJECT = RANGEBEGINNINGTIME
NUM_VAL = 1
VALUE = "01:39:37"
END_OBJECT = RANGEBEGINNINGTIME
END_GROUP = RANGEDATETIME
GROUP = PGEVERSIONCLASS
OBJECT = PGEVERSION
NUM_VAL = 1
VALUE = "0.1.0"
END_OBJECT = PGEVERSION
END_GROUP = PGEVERSIONCLASS
END_GROUP = INVENTORYMETADATA
END
|
| geospatial_bounds: | POLYGON((57.8383 -103.1601,53.8585 -101.8283,49.4598 -100.6888,44.8112 -99.7562,39.5318 -98.9429,34.3516 -98.3345,28.7184 -97.8363,23.0695 -97.4732,17.2029 -97.2139,17.1860 -92.0848,26.9644 -92.1102,38.7695 -92.2956,48.9757 -92.6113,57.6206 -93.0675,57.8538 -103.1221,57.8383 -103.1601)) |
| geospatial_bounds_crs: | EPSG:4326 |
| geospatial_lon_min: | -103.160126 |
| geospatial_lon_max: | -92.0847778 |
| geospatial_lat_min: | 17.1859951 |
| geospatial_lat_max: | 57.8537827 |
| granule_flag: | 32 bit Integer long_name: granule processing label flag_meanings: is_first_granule_of_scan is_last_granule_of_scan is_telemetry_only scan_seq_start flag_masks: 1, 2, 4, 8 |
||||
| mirror_step: | Array of 32 bit Integers [mirror_step = 0..116] long_name: scan mirror position index |
||||
| time: | Grid standard_name: time long_name: exposure start time calendar: gregorian units: seconds since 1980-01-06T00:00:00Z
| ||||
| exposure_time: | Grid units: seconds long_name: exposure duration valid_min: 0.00000000 _FillValue: 9.96920997e+36 valid_max: 300.000000
| ||||
| earth_sun_distance: | 32 bit Real units: m long_name: Earth-sun distance |
||||
| east_ref_sat_ID: | 32 bit Integer comment: The ID of reference satellite used in the East, 0 indicating no reference satellite is used from the East slot |
||||
| west_ref_sat_ID: | 32 bit Integer comment: The ID of reference satellite used in the West, 0 indicating no reference satellite is used from the West slot |
||||
| VIIRS_registration_status: | 16 bit Integer _FillValue: -127 comment: twilight registration status fail=0 success=1 |
||||
| VIIRS_product_name: | String comment: VIIRS product used for registration and collocated radiances |