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

Description

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.

Resources

Name Format Description Link
0 Navigate directly to the URL for data access and direct download. https://www.ncei.noaa.gov/data/oceans/ghrsst/L2P/VIIRS_NPP/OSPO/
0 Search for data granules belonging to this collection (a granule is the smallest aggregation of data that can be independently described and retrieved). https://data.noaa.gov/onestop/collections/granules/AWbwuvzjYJ6J3EnSGxsU
0 Information for contacts at NCEI. https://www.ncei.noaa.gov/contact
33 Online document https://www.ncei.noaa.gov/archive/accession/0123222/data/0-data/user-guides/GHRSSTUserGuidev91.pdf
0 Institution web page https://www.star.nesdis.noaa.gov/
0 Navigate directly to the URL for a descriptive web page with download links. https://doi.org/10.7289/v5pr7sx5
21 These data are available through a variety of services via a THREDDS (Thematic Real-time Environmental Distributed Data Services) Data Server (TDS). Depending on the dataset, the TDS can provide WMS, WCS, DAP, HTTP, and other data access and metadata services as well. For more information on the TDS, see http://www.unidata.ucar.edu/software/thredds/current/tds/. https://www.ncei.noaa.gov/thredds-ocean/catalog/ghrsst/L2P/VIIRS_NPP/OSPO/catalog.html
0 These data are available through the File Transfer Protocol (FTP). FTP is no longer supported by most internet browsers. You may copy and paste the FTP link to the data into an FTP client (e.g., FileZilla or WinSCP). ftp://ftp-oceans.ncei.noaa.gov/pub/data.nodc/ghrsst/L2P/VIIRS_NPP/OSPO/
0 Institution web page http://www.ospo.noaa.gov/
0 Institution web page http://www.ospo.noaa.gov/
0 Institution web page http://www.ospo.noaa.gov/
0 Institution web page https://www.star.nesdis.noaa.gov/
0 Institution web page http://www.ospo.noaa.gov/
0 Institution web page https://www.star.nesdis.noaa.gov/
0 Institution web page https://www.star.nesdis.noaa.gov/
0 Institution web page https://www.star.nesdis.noaa.gov/
0 Institution web page https://www.star.nesdis.noaa.gov/
0 Institution web page https://www.ospo.noaa.gov/
0 Institution web page http://www.ospo.noaa.gov/
0 Information for contacts at NCEI. https://www.ncei.noaa.gov/contact
0 Global Change Master Directory (GCMD). 2023. GCMD Keywords, Version 17. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords
33 Online document https://www.ncei.noaa.gov/archive/accession/0123222/data/0-data/project-documents/GDS20r5.pdf
0 SST products monitored in SQUAM R2 https://www.star.nesdis.noaa.gov/socd/sst/squam/
0 related journal article https://doi.org/10.1002/2013jd020637
0 related journal article https://doi.org/10.1175/2010jtecha1413.1
0 SST products monitored in iQUAM R2 https://www.star.nesdis.noaa.gov/socd/sst/iquam/
0 SST products monitored in MICROS R2 https://www.star.nesdis.noaa.gov/socd/sst/micros/
0 Institution web page https://www.star.nesdis.noaa.gov/
21 VIIRS_NPP-OSPO-L2P-v2.61 https://cmr.earthdata.nasa.gov/search/concepts/C1653649489-PODAAC.html
0 related journal article https://doi.org/10.25923/9wr5-j055
0 Institution web page https://www.ospo.noaa.gov/
0 Institution web page https://www.star.nesdis.noaa.gov/
0 Global Change Master Directory (GCMD). 2023. GCMD Keywords, Version 17. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords
0 Global Change Master Directory (GCMD). 2023. GCMD Keywords, Version 17. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords
0 Global Change Master Directory (GCMD). 2023. GCMD Keywords, Version 17. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords
0 Institution web page https://podaac.jpl.nasa.gov/
0 Global Change Master Directory (GCMD). 2023. GCMD Keywords, Version 17. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords
0 Global Change Master Directory (GCMD). 2023. GCMD Keywords, Version 17. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords
21 VIIRS_NPP-STAR-L2P-v2.80 https://cmr.earthdata.nasa.gov/search/concepts/C2147480877-POCLOUD.html

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  • oceanography

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