scan mirror position index time exposure start time gregorian seconds since 1980-01-06T00:00:00Z The ID of reference satellite used in the West, 0 indicating no reference satellite is used from the West slot The ID of reference satellite used in the East, 0 indicating no reference satellite is used from the East slot granule processing label is_first_granule_of_scan is_last_granule_of_scan is_telemetry_only scan_seq_start 1 2 4 8 -127 twilight registration status fail=0 success=1 m Earth-sun distance seconds exposure duration 0. 9.969209968e+36 300. VIIRS product used for registration and collocated radiances 1980-01-06T00:00:00Z 2 RADT TEMPO_SDPC_v4.8.3 18 3 4 3 2026-04-30T01:39:37Z 2026-04-30T01:52:08Z 1461548395.9574423 1461549146.3105969 2026-04-30T02:11:07Z 4 0.1.0 TEMPO_RADT_L1 2026-04-30 01:39:37 2026-04-30 01:52:08 2 1 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 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 TEMPO_RADT_L1_V04_20260430T013937Z_S018G03.nc CF-1.6, ACDD-1.3 120 TEMPO Intelsat 40e UV-VIS hyperspectral imaging Smithsonian Astrophysical Observatory http://tempo.si.edu TEMPO Level 1 twilight radiance measurement TEMPO_RADT_L1 1 EARTH SCIENCE>SPECTRAL/ENGINEERING>VISIBLE WAVELENGTHS>VISIBLE RADIANCE, EARTH SCIENCE>SPECTRAL/ENGINEERING>ULTRAVIOLET WAVELENGTHS>ULTRAVIOLET RADIANCE 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. 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 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)) EPSG:4326 -103.1601257 -92.08477783 17.1859951 57.85378265 2026-05-11T12:15:41Z 3.21.1 3.21.1 libdap-3.21.1 build_dmrpp -f /Users/myang6/Desktop/TEMPO_RADT_L1_V04_20260430T013937Z_S018G03.nc -r TEMPO_RADT_L1_V04_20260430T013937Z_S018G03.nc.dmr -u OPeNDAP_DMRpp_DATA_ACCESS_URL -M 9.969209968e+36 pixels mean registration error cross track for scan 9.969209968e+36 pixels sigma of registration error along track for scan 9.969209968e+36 pixels sigma of registration error cross track for scan 9.969209968e+36 pixels mean registration error along track for scan -2147483647 number of verification points degrees_east longitude longitude longitude at pixel center longitude_bounds -180. 180. 9.969209968e+36 degrees_north latitude latitude latitude at pixel center latitude_bounds -90. 90. 9.969209968e+36 9.969209968e+36 degrees lunar azimuth angle at pixel center -180. 180. m area-weighted mean terrain height Area-weighted mean terrain height inside each pixel time longitude latitude -100 10000 -32767 9.969209968e+36 time longitude latitude nW/(cm^2 sr) full VIS band integrated radiance from 540nm to 740nm 9.969209968e+36 km lunar distance at pixel center 0. degrees solar_azimuth_angle solar azimuth angle at pixel center -180. 180. 9.969209968e+36 degrees solar_zenith_angle solar zenith angle at pixel center 0. 9.969209968e+36 180. m area-weighted mean terrain height standard deviation Area-weighted mean standard deviation of terrain height inside each pixel -100 10000 -32767 longitude bounds (NE,NW,SW,SE) Longitude at pixel corners -180. 180. 9.969209968e+36 polarization straylight Bit settings indicate which corrections have been applied 1 2 m ellipsoid altitude at bounds (NE,NW,SW,SE) Ellipsoid altitude at pixel corners -100. 10000. 9.969209968e+36 photons/s/cm^2/nm/sr time longitude latitude spectral_channel radiance_error radiance_status_flag -9.969209968e+36 9.969209968e+36 degrees lunar zenith angle at pixel center -180. 180. 9.969209968e+36 snow_ice_fraction Fraction of pixel area covered by snow and/or ice time longitude latitude degrees viewing_zenith_angle viewing zenith angle at pixel center 0. 90. 9.969209968e+36 9.969209968e+36 time longitude latitude nW/(cm^2 sr) VIS city lights band integrated radiance from 540nm to 640nm photons/s/cm^2/nm/sr time longitude latitude spectral_channel radiance error -9.969209968e+36 2 INR quality flag time longitude latitude nominal off_earth bad 0 1 2 -2147483647 latitude bounds (NE,NW,SW,SE) Latitude at pixel corners -90. 90. 9.969209968e+36 9.969209968e+36 time longitude latitude spectral_channel photons/s/cm^2/nm/sr VIS subtracted background concatenated from all granules radiance_error radiance_status_flag m ellipsoid_altitude ellipsoid altitude at pixel center ellipsoid_altitude_bounds time longitude latitude -100. 10000. 9.969209968e+36 km^2 Unique elements of 2x2 symmetric covariance matrix, cov(0,0), cov(0,1), cov(1,1) 9.969209968e+36 9.969209968e+36 time longitude latitude nW/(cm^2 sr) collocated VIIRS-DNB radiances VIIRS_product_name 255 time longitude latitude twilight pixel quality flag persistently_hot_pixel anomalously_noisy_pixel anomalous_dark_subtraction edge_pixel saturated 1 2 4 8 16 pixel quality flag 65535 1 2 4 8 16 32 64 128 256 512 1024 2048 missing_data bad_pixel processing_error transient_pixel rts_pixel saturated noise_underflow dark_corr_error offset_corr_error smear_corr_error straylight_corr_error nonlinear_range degrees viewing_azimuth_angle viewing azimuth angle at pixel center -180. 180. 9.969209968e+36 ground pixel quality flag time longitude latitude 4294967295 0 1 2 3 4 5 6 7 15 16 32 0 65536 131072 196608 262144 327680 393216 458752 524288 589824 655360 720896 786432 851968 917504 983040 1048576 16646144 16711680 shallow_ocean land shallow_inland_water shoreline intermittent_water deep_inland_water continental_shelf_ocean deep_ocean land_water_error sun_glint_possibility solar_eclipse_possibility water evergreen_needleleaf_forest evergreen_broadleaf_forest deciduous_needleleaf_forest deciduous_broadleaf_forest mixed_forest closed_shrublands open_shrublands woody_savannas savannas grasslands permanent_wetlands croplands urban_and_built_up cropland_natural_vegetation_mosaic snow_and_ice barren_or_sparsely_vegetated unclassified fill_value nm -9.969209968e+36 9.969209968e+36 9.969209968e+36 9.969209968e+36 km height above the terrain surface 0. m time longitude latitude 9.969209968e+36 yes degrees_east longitude longitude longitude at pixel center longitude_bounds -180. 180. 9.969209968e+36 degrees_north latitude latitude latitude at pixel center latitude_bounds -90. 90. 9.969209968e+36 9.969209968e+36 degrees lunar azimuth angle at pixel center 0. 180. 9.969209968e+36 time longitude latitude nW/(cm^2 sr) aurora band integrated radiance 389.5nm to 392.0nm m area-weighted mean terrain height Area-weighted mean terrain height inside each pixel time longitude latitude -100 10000 -32767 9.969209968e+36 time longitude latitude nW/(cm^2 sr) full UV band integrated radiance from 290nm to 490nm 9.969209968e+36 km lunar distance at pixel center 0. degrees solar_azimuth_angle solar azimuth angle at pixel center -180. 180. 9.969209968e+36 degrees solar_zenith_angle solar zenith angle at pixel center 0. 9.969209968e+36 180. m area-weighted mean terrain height standard deviation Area-weighted mean standard deviation of terrain height inside each pixel -100 10000 -32767 longitude bounds (NE,NW,SW,SE) Longitude at pixel corners -180. 180. 9.969209968e+36 9.969209968e+36 time longitude latitude nW/(cm^2 sr) UV city lights band integrated radiance from 390nm to 490nm m ellipsoid altitude at bounds (NE,NW,SW,SE) Ellipsoid altitude at pixel corners -100. 10000. 9.969209968e+36 photons/s/cm^2/nm/sr time longitude latitude spectral_channel radiance_error radiance_status_flag -9.969209968e+36 9.969209968e+36 degrees lunar zenith angle at pixel center 0. 180. 9.969209968e+36 snow_ice_fraction Fraction of pixel area covered by snow and/or ice time longitude latitude degrees viewing_zenith_angle viewing zenith angle at pixel center 0. 90. 9.969209968e+36 photons/s/cm^2/nm/sr time longitude latitude spectral_channel radiance error -9.969209968e+36 2 INR quality flag time longitude latitude nominal off_earth bad 0 1 2 -2147483647 latitude bounds (NE,NW,SW,SE) Latitude at pixel corners -90. 90. 9.969209968e+36 9.969209968e+36 time longitude latitude spectral_channel photons/s/cm^2/nm/sr UV subtracted background concatenated from all granules radiance_error radiance_status_flag m ellipsoid_altitude ellipsoid altitude at pixel center ellipsoid_altitude_bounds time longitude latitude -100. 10000. 9.969209968e+36 km^2 Unique elements of 2x2 symmetric covariance matrix, cov(0,0), cov(0,1), cov(1,1) 9.969209968e+36 polarization straylight Bit settings indicate which corrections have been applied 1 2 255 time longitude latitude twilight pixel quality flag persistently_hot_pixel anomalously_noisy_pixel anomalous_dark_subtraction edge_pixel saturated 1 2 4 8 16 9.969209968e+36 time longitude latitude nW/(cm^2 sr) lightning band integrated radiance from 310nm to 340nm pixel quality flag 65535 1 2 4 8 16 32 64 128 256 512 1024 2048 missing_data bad_pixel processing_error transient_pixel rts_pixel saturated noise_underflow dark_corr_error offset_corr_error smear_corr_error straylight_corr_error nonlinear_range degrees viewing_azimuth_angle viewing azimuth angle at pixel center -180. 180. 9.969209968e+36 ground pixel quality flag time longitude latitude 4294967295 0 1 2 3 4 5 6 7 15 16 32 0 65536 131072 196608 262144 327680 393216 458752 524288 589824 655360 720896 786432 851968 917504 983040 1048576 16646144 16711680 shallow_ocean land shallow_inland_water shoreline intermittent_water deep_inland_water continental_shelf_ocean deep_ocean land_water_error sun_glint_possibility solar_eclipse_possibility water evergreen_needleleaf_forest evergreen_broadleaf_forest deciduous_needleleaf_forest deciduous_broadleaf_forest mixed_forest closed_shrublands open_shrublands woody_savannas savannas grasslands permanent_wetlands croplands urban_and_built_up cropland_natural_vegetation_mosaic snow_and_ice barren_or_sparsely_vegetated unclassified fill_value nm -9.969209968e+36 9.969209968e+36 9.969209968e+36 9.969209968e+36 km height above the terrain surface 0. m time longitude latitude 9.969209968e+36 yes seconds since 1980-01-06T00:00:00Z km Satellite Z coordinate Earth-centered WGS84 Cartesian coordinates (z=North Pole, y=equator, x=prime meridian) km/s Satellite Y velocity Velocity component in instantaneous non-rotating Earth-centered WGS84 Cartesian coordinates (z=North Pole, y=equator, x=prime meridian) km Satellite Y coordinate Earth-centered WGS84 Cartesian coordinates (z=North Pole, y=equator, x=prime meridian) km/s Satellite X velocity Velocity component in instantaneous non-rotating Earth-centered WGS84 Cartesian coordinates (z=North Pole, y=equator, x=prime meridian) km Satellite X coordinate Earth-centered WGS84 Cartesian coordinates (z=North Pole, y=equator, x=prime meridian) km/s Satellite Z velocity Velocity component in instantaneous non-rotating Earth-centered WGS84 Cartesian coordinates (z=North Pole, y=equator, x=prime meridian) ephemeris_time GPSR seconds since 1980-01-06T00:00:00Z seconds since 1980-01-06T00:00:00Z Gyro data quality flags invalid saturated 1 2 counts Raw gyro output in telemetry counts radian/s Gyro bias estimate resolved along spacecraft body axes gyro_time bias_time seconds since 1980-01-06T00:00:00Z microradians Filtered estimated control axis-x scan position microradians Filtered estimated control axis-y scan position counts Filtered raw DIT readout for sensor axis-x DIT pair counts Filtered raw DIT readout for sensor axis-y DIT pair sma_time km satellite X coordinate at exposure start Earth-centered WGS84 Cartesian coordinates (z=North Pole, y=equator, x=prime meridian) Boresight unit vector component along GN&C pitch axis Boresight unit vector component along GN&C pitch axis radians Sun cone angle from boresight Angle between the sun and the boresight of the instrument at the exposure start 9.969209968e+36 degrees Lunar phase angle calculated from sun and moon positions 0. 180. lunar phase angle km Sun X coordinate at exposure start Earth-centered WGS84 Cartesian coordinates (z=North Pole, y=equator, x=prime meridian) km satellite Y coordinate at exposure start Earth-centered WGS84 Cartesian coordinates (z=North Pole, y=equator, x=prime meridian) km satellite Z coordinate at exposure start Earth-centered WGS84 Cartesian coordinates (z=North Pole, y=equator, x=prime meridian) km Sun Y coordinate at exposure start Earth-centered WGS84 Cartesian coordinates (z=North Pole, y=equator, x=prime meridian) km Moon X coordinate at exposure start Earth-centered WGS84 Cartesian coordinates (z=North Pole, y=equator, x=prime meridian) Boresight unit vector component along GN&C yaw axis Boresight unit vector component along GN&C yaw axis Boresight unit vector component along GN&C roll axis Boresight unit vector component along GN&C roll axis km Sun Z coordinate at exposure start Earth-centered WGS84 Cartesian coordinates (z=North Pole, y=equator, x=prime meridian) km Moon Y coordinate at exposure start Earth-centered WGS84 Cartesian coordinates (z=North Pole, y=equator, x=prime meridian) km Moon Z coordinate at exposure start Earth-centered WGS84 Cartesian coordinates (z=North Pole, y=equator, x=prime meridian)