GHRSST Level 4 AVHRR_OI Global Blended Sea Surface Temperature Analysis from NCEI (GDS versions 1 and 2)

Description

A Group for High Resolution Sea Surface Temperature (GHRSST) global Level 4 sea surface temperature analysis is produced daily on a 0.25 degree grid at the NOAA National Centers for Environmental Information. This product uses optimal interpolation (OI) by interpolating and extrapolating SST observations from different sources, resulting in a smoothed complete field. The sources of data are satellite (AVHRR) and in situ platforms (i.e., ships, buoys, and Argo floats above 5m depth), and the specific datasets employed may change over time. In the regions with sea-ice concentration higher than 30%, freezing points of seawater are used to generate proxy SSTs. A preliminary version of this file is produced in near-real time (1-day latency), and then replaced with a final version after 2 weeks. The v2.1 is updated from the AVHRR_OI-NCEI-L4-GLOB-v2.0 data. Major improvements include: 1) In-Situ ship and buoy data changed from the NCEP Traditional Alphanumeric Codes (TAC) to the NCEI merged TAC + Binary Universal Form for the Representation (BUFR) data, with large increase of buoy data included to correct satellite SST biases; 2) Addition of Argo float observed SST data as well, for further correction of satellite SST biases; 3) Satellite input from the METOP-A and NOAA-19 to METOP-A and METOP-B, removing degraded satellite data; 4) Revised ship-buoy SST corrections for improved accuracy; and 5) Revised sea-ice-concentration to SST conversion to remove warm biases in the Arctic region (Banzon et al. 2020). These updates only apply to granules after Jan. 1st, 2016. The data pre 2016 are still the same as v2.0 except for metadata upgrades.

Resources

Name Format Description Link
0 Institution web page https://podaac.jpl.nasa.gov/
0 Institution web page https://www.ncdc.noaa.gov
0 Information for contacts at NCEI. https://www.ncei.noaa.gov/contact
0 journal article https://doi.org/10.1175/2010jcli3294.1
0 journal article https://doi.org/10.1175/2010jtecho756.1
0 journal article https://doi.org/10.5194/essd-8-165-2016
33 Presentation https://accession.nodc.noaa.gov/0123222/data/0-data/producer-documents/Presentation_Banzon_GHRSSTXXII.pdf
33 Slide https://www1.ncdc.noaa.gov/pub/data/sds/cdr/CDRs/Sea_Surface_Temperature_Optimum_Interpolation/MaturityMatrix.pdf
0 Group for High Resolution Sea Surface Temperature Information https://ghrsst.jpl.nasa.gov
33 Documentation on the GDS version 2 format specification https://podaac-tools.jpl.nasa.gov/drive/files/OceanTemperature/ghrsst/docs/GDS20r5.pdf
0 Live Access Server https://podaac-tools.jpl.nasa.gov/las/UI.vm
0 Python Subsetting Script https://podaac.jpl.nasa.gov/forum/viewtopic.php?f=5&t=219
33 Online document https://accession.nodc.noaa.gov/0123222/data/0-data/miscellaneous-documents/GHRSSTUserGuidev91.pdf
0 The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. https://wiki.earthdata.nasa.gov/display/gcmdkey
0 Navigate directly to the URL for data access and direct download. https://www.ncei.noaa.gov/data/oceans/ghrsst/L4/GLOB/NCEI/AVHRR_OI/
0 The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. https://wiki.earthdata.nasa.gov/display/gcmdkey
0 journal article https://doi.org/10.1175/2007jcli1824.1
0 Group for High Resolution Sea Surface Temperature Information https://ghrsst.jpl.nasa.gov
0 Generic netCDF readers provided in multiple programming languages https://podaac-tools.jpl.nasa.gov/drive/files/allData/ghrsst/sw/generic_nc_readers/
0 Information for contacts at NCEI. https://www.ncei.noaa.gov/contact
0 The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. https://wiki.earthdata.nasa.gov/display/gcmdkey
33 Online document https://accession.nodc.noaa.gov/0123222/data/0-data/governance-documents/GDS20r5.pdf
0 journal article https://doi.org/10.1175/1520-0442(2002)015<1609:aiisas>2.0.co;2
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/L4/GLOB/NCEI/AVHRR_OI/catalog.html
0 The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. https://wiki.earthdata.nasa.gov/display/gcmdkey
0 http://www.ghrsst-pp.org
0 A long-term record of blended satellite and in situ sea-surface temperature for climate monitoring, modeling and environmental studies, Earth Syst. Sci. Data, 8, 165-176, 2016 https://doi.org/10.5194/essd-8-165-2016
0 journal article https://doi.org/10.1175/1520-0442-16.10.1495
33 Daily 1/4 Degree Optimum Interpolation Sea Surface Temperature (OISST)- Climate Algorithm Theoretical Theoretical Basis Document, NOAA Climate Data Record Program CDRP-ATBD-0303 Rev. 2 (2013) https://podaac-tools.jpl.nasa.gov/drive/files/allData/ghrsst/docs/NCEI_AVHRR-OI_SST_ATBD.pdf
0 The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. https://wiki.earthdata.nasa.gov/display/gcmdkey
0 The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. https://wiki.earthdata.nasa.gov/display/gcmdkey
0 Navigate directly to the URL for a descriptive web page with download links. https://www.ncei.noaa.gov/archive/accession/GHRSST-AVHRR_OI-NCEI-L4-GLOB
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/AWbxFS-XHtVRBOAZkCoX
0 (Search Granule) https://podaac.jpl.nasa.gov/ws/search/granule/?datasetId=PODAAC-GHAAO-4BC21
0 These data are available through the File Transfer Protocol (FTP). You may use any FTP client to download these data. ftp://ftp.nodc.noaa.gov/pub/data.nodc/ghrsst/L4/GLOB/NCEI/AVHRR_OI/

Tags

  • sea surface temperature
  • oceans
  • ocean temperature
  • oceanography
  • blended sea surface temperature
  • earth science
  • argo profiling float

Topics

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