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Dataset Overview | National Centers for Environmental Information (NCEI)

GHRSST Level 2P NOAA STAR SST v2.80 from VIIRS on S-NPP Satellite (GDS version 2)

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The Joint Polar Satellite System (JPSS), starting with S-NPP launched on 28 October 2011, is the new generation of the US Polar Operational Environmental Satellites (POES). NOAA is responsible for all JPSS products, including SST from the Visible Infrared Imaging Radiometer Suite (VIIRS). The L2P SST product is derived at the native sensor resolution (~0.75 km at nadir, ~1.5 km at swath edge) using NOAA's Advanced Clear-Sky Processor for Ocean (ACSPO) system, and reported in 10-minute granules in netCDF4 format, compliant with the Group for High Resolution Sea Surface Temperature (GHRSST) Data Specification version 2 (GDS2). SSTs are derived from Brightness Temperatures (BTs) using the Non-Linear SST (NLSST) algorithms (Petrenko et al., 2014). An ACSPO clear-sky mask (ACSM) is provided in each pixel as part of variable l2p_flags, which also includes day/night, land, ice, twilight, and glint flags (Petrenko et al., 2010). Only ACSM confidently clear pixels are recommended (equivalent to GDS2 quality level=5). Per GDS2 specifications, two additional Sensor-Specific Error Statistics layers (SSES bias and standard deviation) are reported in each pixel with QL=5. The ACSPO VIIRS L2P product is monitored and validated against quality controlled in situ data provided by NOAA in situ SST Quality Monitor system (iQuam) using another NOAA system, SST Quality Monitor (SQUAM). A reduced size (0.5GB/day), equal-angle gridded (0.02-deg resolution), ACSPO L3U product is also available, where gridded L2P SSTs with QL=5 only are reported. The v2.80 is an updated version from the v2.61 with several algorithm improvements including two added thermal front layers, reduced L2P SST data size, mitigated warm biases in the high latitudes, and improved clear-sky mask.
  • Cite as: Jonasson, Olafur; Ignatov, Alexander; Kihai, Yury; Gladkova, Irina; Petrenko, Boris; Pryamitsyn, Victor; Baker-Yeboah, Sheekela (2015). GHRSST Level 2P NOAA STAR SST v2.80 from VIIRS on S-NPP Satellite (GDS version 2). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.7289/v5pr7sx5. Accessed [date].
gov.noaa.nodc:GHRSST-VIIRS_NPP-OSPO-L2P
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Distribution Formats
  • netCDF (Version: netCDF-4)
    • File Specification: GDS-2.0, ACDD-1.3, CF-1.6
  • netCDF (Version: netCDF-4)
    • File Specification: GDS-2.0, CF-1.6
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Distributor NOAA National Centers for Environmental Information
+1-301-713-3277
NCEI.Info@noaa.gov
Dataset Point of Contact NOAA National Centers for Environmental Information
ncei.info@noaa.gov
Time Period 2014-05-20 to Present
Spatial Bounding Box Coordinates
West: -180
East: 180
South: -90
North: 90
Spatial Coverage Map
General Documentation
Associated Resources
Publication Dates
  • publication: 2015-08-11
  • revision: 2024-06-20
Data Presentation Form Digital table - digital representation of facts or figures systematically displayed, especially in columns
Dataset Progress Status Ongoing - data is continually being updated
Historical archive - data has been stored in an offline storage facility
Data Update Frequency Daily
Supplemental Information
This collection includes data from the following product(s): GHRSST Level 2P NOAA STAR SST v2.80 from VIIRS on S-NPP Satellite (GDS version 2) (VIIRS_NPP-OSPO-L2P-v2.80); GHRSST Level 2P Global Skin Sea Surface Temperature from the Visible Infrared Imaging Radiometer Suite (VIIRS) on the Suomi NPP satellite created by the NOAA Advanced Clear-Sky Processor for Ocean (ACSPO) (VIIRS_NPP-OSPO-L2P-v2.3); GHRSST GDS2 Level 2P Global Skin Sea Surface Temperature from the Visible Infrared Imaging Radiometer Suite (VIIRS) on the Suomi NPP satellite created by the NOAA Advanced Clear-Sky Processor for Ocean (ACSPO) (VIIRS_NPP-OSPO-L2P-v2.4); GHRSST GDS2 Level 2P Global Subskin Sea Surface Temperature from the Visible Infrared Imaging Radiometer Suite (VIIRS) on the Suomi NPP satellite created by the NOAA Advanced Clear-Sky Processor for Ocean (ACSPO) (VIIRS_NPP-OSPO-L2P-v2.41); GHRSST GDS2 Level 2P Global Subskin Sea Surface Temperature version 2.60 from the Visible Infrared Imaging Radiometer Suite (VIIRS) on the Suomi NPP satellite created by the NOAA Advanced Clear-Sky Processor for Ocean (ACSPO) (VIIRS_NPP-OSPO-L2P-v2.60); GHRSST Level 2P OSPO dataset v2.61 from VIIRS on S-NPP Satellite (GDS v2) (VIIRS_NPP-OSPO-L2P-v2.61); GHRSST Level 2P NOAA STAR SST v2.80 from VIIRS on S-NPP Satellite (VIIRS_NPP-STAR-L2P-v2.80).
Purpose This dataset is available to the public for a wide variety of uses including scientific research and analysis.
Use Limitations
  • accessLevel: Public
  • Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.
Dataset Citation
  • Cite as: Jonasson, Olafur; Ignatov, Alexander; Kihai, Yury; Gladkova, Irina; Petrenko, Boris; Pryamitsyn, Victor; Baker-Yeboah, Sheekela (2015). GHRSST Level 2P NOAA STAR SST v2.80 from VIIRS on S-NPP Satellite (GDS version 2). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.7289/v5pr7sx5. Accessed [date].
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Theme keywords NODC DATA TYPES THESAURUS NODC OBSERVATION TYPES THESAURUS WMO_CategoryCode
  • oceanography
Global Change Master Directory (GCMD) Science Keywords
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