NOAA Optimum Interpolation 1/4 Degree Daily Sea Surface Temperature Analysis

Two new high resolution sea surface temperature (SST) analysis products have been developed by NOAA National Centers for Environmental Information (NCEI) using optimum interpolation (OI). The analyses have a spatial grid resolution of 0.25 degrees and temporal resolution of 1 day. One product uses Advanced Very High Resolution Radiometer (AVHRR) infrared satellite SST data. The other uses AVHRR and Advanced Microwave Scanning Radiometer (AMSR) on the NASA Earth Observing System satellite SST data. Both products also use in situ data from ships and buoys and include a large-scale adjustment of satellite biases with respect to the in situ data. Two products are needed because there is an increase in signal variance when AMSR became available in June 2002 due to its near all-weather coverage. Update October 6, 2011: AMSR + AVHRR OI SST production has been discontinued because the AMSR-E instrument has stopped working.

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Temporal Range

  • Begin:  1981-09-01T1200+00
    End:  2025-08-09T1200+00

Keywords

Resource Type dataset
Temporal Range Begin 1981-09-01T1200+00
Temporal Range End 2025-08-09T1200+00
Temporal Resolution N/A
Bounding Box North Lat 90.0
Bounding Box South Lat -90.0
Bounding Box West Long -180.0
Bounding Box East Long 180.0
Spatial Representation grid
Spatial Resolution 0.25 degree
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Related Resource #1 : NOAA Optimum Interpolation 1/4 Degree Daily Sea Surface Temperature Analysis
Additional Information N/A
Resource Format NetCDF
NetCDF4
Standardized Resource Format NetCDF
Asset Size 32795.681 MB
Legal Constraints

Creative Commons Attribution 4.0 International License
Access Constraints None
Software Implementation Language N/A

Resource Support Name N/A
Resource Support Email datahelp@ucar.edu
Resource Support Organization N/A
Distributor NSF NCAR Geoscience Data Exchange
Metadata Contact Name N/A
Metadata Contact Email datahelp@ucar.edu
Metadata Contact Organization NSF NCAR Geoscience Data Exchange

Author National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
Publisher NSF National Center for Atmospheric Research
Publication Date 2007-02-16
Digital Object Identifier (DOI) https://doi.org/10.5065/EM0T-1D34
Alternate Identifier d277007
Resource Version N/A
Topic Category oceans
Progress onGoing
Metadata Date 2025-10-09T01:45:55Z
Metadata Record Identifier edu.ucar.gdex::d277007
Metadata Language eng; USA
Suggested Citation National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce. (2007). NOAA Optimum Interpolation 1/4 Degree Daily Sea Surface Temperature Analysis. NSF National Center for Atmospheric Research. https://doi.org/10.5065/EM0T-1D34. Accessed 10 October 2025.

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