4.0 1.0 TEMPO_RADT_L1_V04_20260430T013937Z_S018G03.nc /nasa-ngap/tempo/TEMPO_RADT_L1_V04_20260430T013937Z_S018G03.nc mirror_step 117 granule_flag long_name String granule processing label flag_meanings String is_first_granule_of_scan is_last_granule_of_scan is_telemetry_only scan_seq_start flag_masks Int32 1 2 4 8 mirror_step /mirror_step long_name String scan mirror position index time /mirror_step standard_name String time long_name String exposure start time calendar String gregorian units String seconds since 1980-01-06T00:00:00Z exposure_time /mirror_step units String seconds long_name String exposure duration valid_min Float32 0.00000000 _FillValue Float32 9.96920997e+36 valid_max Float32 300.000000 earth_sun_distance units String m long_name String Earth-sun distance east_ref_sat_ID comment String The ID of reference satellite used in the East, 0 indicating no reference satellite is used from the East slot west_ref_sat_ID comment String The ID of reference satellite used in the West, 0 indicating no reference satellite is used from the West slot VIIRS_registration_status _FillValue Int16 -127 comment String twilight registration status fail=0 success=1 VIIRS_product_name comment String VIIRS product used for registration and collocated radiances NC_GLOBAL Container time_reference String 1980-01-06T00:00:00Z format_version Int32 2 product_type String RADT sdpc_version String TEMPO_SDPC_v4.8.3 scan_num Int32 18 granule_num Int32 3 processing_version Int32 4 scan_type Int32 3 time_coverage_start String 2026-04-30T01:39:37Z time_coverage_end String 2026-04-30T01:52:08Z time_coverage_start_since_epoch Float64 1461548395.957442 time_coverage_end_since_epoch Float64 1461549146.310597 production_date_time String 2026-04-30T02:11:07Z version_id Int32 4 pge_version String 0.1.0 shortname String TEMPO_RADT_L1 begin_date String 2026-04-30 begin_time String 01:39:37 end_date String 2026-04-30 end_time String 01:52:08 inr_status String 2 processing_level String 1 history String 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 String 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 String TEMPO_RADT_L1_V04_20260430T013937Z_S018G03.nc Conventions String CF-1.6, ACDD-1.3 day_of_year String Attribute elided: Unsupported attribute type (NC_INT64) project String TEMPO platform String Intelsat 40e source String UV-VIS hyperspectral imaging institution String Smithsonian Astrophysical Observatory creator_url String http://tempo.si.edu title String TEMPO Level 1 twilight radiance measurement collection_shortname String TEMPO_RADT_L1 collection_version String Attribute elided: Unsupported attribute type (NC_INT64) keywords String EARTH SCIENCE>SPECTRAL/ENGINEERING>VISIBLE WAVELENGTHS>VISIBLE RADIANCE, EARTH SCIENCE>SPECTRAL/ENGINEERING>ULTRAVIOLET WAVELENGTHS>ULTRAVIOLET RADIANCE summary String Level 1 twilight radiance files provide radiance measured during twilight hours to capture city lights at TEMPO\342\200\231s 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 String 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 String 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 String EPSG:4326 geospatial_lon_min Float32 -103.160126 geospatial_lon_max Float32 -92.0847778 geospatial_lat_min Float32 17.1859951 geospatial_lat_max Float32 57.8537827