VIIRS/NPP On Board Calibrator (OBC) IP NRT
The VIIRS Level 1 and Level 2 swath products are generated from the processing of 6 minutes of VIIRS data acquired during the NPP satellite overpass. The VIIRS sensor has 5 high-resolution imagery channels (I-bands) that have 32 detectors (32 rows of pixels per scan), with twice the resolution of the M-bands and the DNB, that span the wavelengths from 0.640 µm to 11.45 µm.
The VIIRS on-board calibrator and engineering data product is referred to by it's shortname, VNP02OBC. The VIIRS On Board Calibrator IP file contains space view, solar diffuser, on-board calibrator blackbody (OBCBB) view observations, the associated gain state and HAM side information, and all engineering and housekeeping data, including unscaled data from the Solar Diffuser Stability Monitor (SDSM)/VIIRS Earth View Radiometric Calibration Unit and the Solar Diffuser GEO angles.
For additional information, see the Operational Algorithm Description (OAD) Document for the L1B product (http://npp.gsfc.nasa.gov/sciencedocs/2015-08/474-00090_OAD-VIIRS-CAL-GEO-SDR_H.pdf). The document describes how VIIRS operates in space and provides the equations implemented by the L1B software to generate the MODIS Level 1 intermediate products. It is a summary document the presents the formulae and error budges used to transform VIIRS digital counts to radiance and reflectance.
file_naming_convention = VNP02OBC.AYYYYDDD.HHMM.CCC.nc
AYYYYDDD = Acquisition Year and Day of Year
HHMM = Hour and minute of acquisition
CCC = Collection number
nc = NetCDF5
Resources
3 resources available
-
Original Metadata
ISO -
Resource 2
BIN -
Resource 3
BIN
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Complete Metadata
| @type | dcat:Dataset |
|---|---|
| accessLevel | public |
| bureauCode |
[ "026:00" ] |
| contactPoint |
{ "fn": "Earthdata Forum", "@type": "vcard:Contact", "hasEmail": "mailto:earthdata-support@nasa.gov" } |
| description | The VIIRS Level 1 and Level 2 swath products are generated from the processing of 6 minutes of VIIRS data acquired during the NPP satellite overpass. The VIIRS sensor has 5 high-resolution imagery channels (I-bands) that have 32 detectors (32 rows of pixels per scan), with twice the resolution of the M-bands and the DNB, that span the wavelengths from 0.640 µm to 11.45 µm. The VIIRS on-board calibrator and engineering data product is referred to by it's shortname, VNP02OBC. The VIIRS On Board Calibrator IP file contains space view, solar diffuser, on-board calibrator blackbody (OBCBB) view observations, the associated gain state and HAM side information, and all engineering and housekeeping data, including unscaled data from the Solar Diffuser Stability Monitor (SDSM)/VIIRS Earth View Radiometric Calibration Unit and the Solar Diffuser GEO angles. For additional information, see the Operational Algorithm Description (OAD) Document for the L1B product (http://npp.gsfc.nasa.gov/sciencedocs/2015-08/474-00090_OAD-VIIRS-CAL-GEO-SDR_H.pdf). The document describes how VIIRS operates in space and provides the equations implemented by the L1B software to generate the MODIS Level 1 intermediate products. It is a summary document the presents the formulae and error budges used to transform VIIRS digital counts to radiance and reflectance. file_naming_convention = VNP02OBC.AYYYYDDD.HHMM.CCC.nc AYYYYDDD = Acquisition Year and Day of Year HHMM = Hour and minute of acquisition CCC = Collection number nc = NetCDF5 |
| distribution |
[ { "@type": "dcat:Distribution", "title": "Original Metadata", "format": "ISO", "mediaType": "text/xml", "conformsTo": "http://www.isotc211.org/2005/gmi", "description": "The metadata's original source.", "downloadURL": "https://cmr.earthdata.nasa.gov/search/concepts/C1410266775-LANCEMODIS.iso19115" }, { "@type": "dcat:Distribution", "format": "BIN", "mediaType": "application/octet-stream", "downloadURL": "https://earthdata.nasa.gov/earth-observation-data/near-real-time/download-nrt-data/viirs-nrt" }, { "@type": "dcat:Distribution", "format": "BIN", "mediaType": "application/octet-stream", "downloadURL": "https://nrt3.modaps.eosdis.nasa.gov/archive/allData/5001/VNP02OBC_NRT" } ] |
| identifier | http://dx.doi.org/10.5067/VIIRS/VNP02OBC_NRT.001 |
| keyword |
[ "earth-science-platform-characteristics-spectral-engineering", "earth-science-platform-characteristics-spectral-engineering-attitude-characteristics", "earth-science-platform-characteristics-spectral-engineering-flight-data-logs", "earth-science-platform-characteristics-spectral-engineering-orbital-characteristics", "earth-science-platform-characteristics-spectral-engineering-viewing-geometry", "earth-science-sensor-characteristics-spectral-engineering-viewing-geometry" ] |
| landingPage | http://dx.doi.org/10.5067/VIIRS/VNP02OBC_NRT.001 |
| license | https://www.usa.gov/government-works |
| modified | 2026-06-23 |
| programCode |
[ "026:000" ] |
| publisher |
{ "name": "NASA/GSFC/EOS/ESDIS/LANCE MODIS;NASA/GSFC/SED/ESD/BSL/VCST", "@type": "org:Organization" } |
| spatial |
"["CARTESIAN", [{"WestBoundingCoordinate": -180.0, "NorthBoundingCoordinate": 90.0, "EastBoundingCoordinate": 180.0, "SouthBoundingCoordinate": -90.0}]]"
|
| theme |
[ "Earth Science" ] |
| title | VIIRS/NPP On Board Calibrator (OBC) IP NRT |
