NOAA Optimum Interpolation 1/4 Degree Daily Sea Surface Temperature (OISST) Analysis, Version 2

Sea Surface Temperature - Optimum Interpolation

browse graphicSea Surface Temperature image
This high-resolution sea surface temperature (SST) analysis product was developed using an optimum interpolation (OI) technique. The SST analysis has a spatial grid resolution of 0.25 (1/4) degree and temporal resolution of 1 day. The product uses Advanced Very High Resolution Radiometer (AVHRR) satellite data from the Pathfinder AVHRR SST dataset when available for September 1981 through December 2005, and the operational Navy AVHRR Multi-Channel SST data for 2006 to the present day. Pathfinder AVHRR SST was chosen because of good agreement with the in situ observation data. The product also uses sea ice datasets, in situ data from ships and buoys, and includes a large-scale adjustment of satellite biases with respect to the in situ data. In areas where sea ice is present, SST is estimated from sea ice concentration datasets from NASA GSFC before 2005 and then from NOAA NCEP from 2005 onwards. Preliminary products are produced daily in near real-time (1-day latency) and may be updated in the first few days if critical input data become available after the initial production time. After two weeks, a complete or final product is generated with no additional changes expected. The preliminary products from near real-time data productions began in October 2008 for Version 2.0. The product is in netCDF-3 following the Climate and Forecast (CF) Conventions, and is accompanied by algorithm documentation, data flow diagram and source code under the NOAA CDR Program.

Cite dataset when used as a source: Richard W. Reynolds, Viva F. Banzon, and NOAA CDR Program (2008): NOAA Optimum Interpolation 1/4 Degree Daily Sea Surface Temperature (OISST) Analysis, Version 2. [indicate subset used]. NOAA National Climatic Data Center. doi:10.7289/V5SQ8XB5 [access date].

Dataset Information
  • Sea Surface Temperature - Optimum Interpolation Landing Page
    This dataset provides a high quality Climate Data Record (CDR) of Sea Surface Temperature. The NOAA 1/4 degree daily Optimum Interpolation Sea Surface Temperature (or daily OISST) provides complete ocean temperature fields constructed by combining bias-adjusted observations from different platforms (satellite, ships, buoys) on a regular global grid, with gaps filled in by interpolation. Satellite data from the Advanced Very High Resolution Radiometer (AVHRR) provides the main input which permits the high temporal-spatial coverage beginning in late 1981 to the present; this must be adjusted to the buoys due to erroneous cold SSTs following the Mount Pinatubo and El Chichon eruptions. Applications include climate modelling, resource management, ecological studies on annual to daily scales.
Online Access
Distribution Formats
  • netCDF (Version: 3)
DistributorDOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
Dataset  Point of Contact NOAA Climate Data Record Program Office
DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
+1 (828) 271-4800
oisst_contacts@noaa.gov
Processing Documents
  • CDR Source Code
    • CDR Source Code (download)
      This source code is for reference only. The source code is provided to maintain transparency of the algorithm and processes used in creating the Climate Data Record (CDR). The source code is not intended to be portable to any computer system(s) beyond that of the original CDR producer's environment.
  • CDR Data Flow Diagram
  • Climate Algorithm Theoretical Basis Document
Associated Resources
Publisher
  • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
  • DOC/NOAA/NESDIS/NCDC > National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce
Principal Investigator
  • Reynolds, Richard W.
    DOC/NOAA/NESDIS/NCDC > National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce
Principal Investigator
  • Banzon, Viva F.
    DOC/NOAA/NESDIS/NCDC > National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce
Collaborator
  • NOAA CDR Program
Date(s)
  • publication: 2008-11-12
Edition:Version 2
Data Presentation Form: Digital image
Dataset Progress Status On Going
Data Update Frequency: Daily  -  Interim run has 1-day latency, and Final run has 14-day latency
Supplemental Information:A companion OISST product was produced using a combination of data from the Advanced Microwave Scanning Radiometer from NASA Earth Observing System (AMSR-E) and AVHRR with coverage from June 2002 through October 2011, when the AMSR-E instrument ceased to function properly.
Purpose:This dataset provides a high quality Climate Data Record (CDR) of Sea Surface Temperature. The NOAA 1/4 degree daily Optimum Interpolation Sea Surface Temperature (or daily OISST) provides complete ocean temperature fields constructed by combining bias-adjusted observations from different platforms (satellite, ships, buoys) on a regular global grid, with gaps filled in by interpolation. Satellite data from the Advanced Very High Resolution Radiometer (AVHRR) provides the main input which permits the high temporal-spatial coverage beginning in late 1981 to the present; this must be adjusted to the buoys due to erroneous cold SSTs following the Mount Pinatubo and El Chichon eruptions. Applications include climate modelling, resource management, ecological studies on annual to daily scales.
Use Limitations
  • For a complete description of use limitations for this CDR, see the Algorithm Theoretical Basis Document.
Time Period:1981-09-01  to  Present (time interval: 1-day)
Spatial Bounding Box Coordinates:
N: 90.0
S: -90.0
E: 180.0
W: -180.0
Spatial Coverage Map:
Theme keywords
  • EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > SEA SURFACE TEMPERATURE
  • Oceanic - Surface - Sea-surface Temperature
Data Center keywords
  • DOC/NOAA/NESDIS/NCDC > National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce
  • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
Instrument keywords
  • AVHRR > Advanced Very High Resolution Radiometer
Place keywords
  • GEOGRAPHIC REGION > GLOBAL OCEAN
Project keywords
  • NOAA Climate Data Record (CDR) Program
Stratum keywords
  • VERTICAL LOCATION > SEA SURFACE
Use Constraints
  • Cite dataset when used as a source: Richard W. Reynolds, Viva F. Banzon, and NOAA CDR Program (2008): NOAA Optimum Interpolation 1/4 Degree Daily Sea Surface Temperature (OISST) Analysis, Version 2. [indicate subset used]. NOAA National Climatic Data Center. doi:10.7289/V5SQ8XB5 [access date].
  • NCEI cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NCEI makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty. 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.
Fees
  • Electronic downloads of the data are free, however fees may apply for data certifications and data distribution on physical media.
Lineage StatementThe data were produced by and are archived at the NOAA National Climatic Data Center (NCDC).
Processor
  • DOC/NOAA/NESDIS/NCDC > National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce
Processing Steps
  • For a complete description of the processing steps, see the Algorithm Theoretical Basis Document and Data Flow Diagram.
  • NOAA created the National Centers for Environmental Information (NCEI) by merging NOAA's National Climatic Data Center (NCDC), National Geophysical Data Center (NGDC), and National Oceanographic Data Center (NODC), including the National Coastal Data Development Center (NCDDC), per the Consolidated and Further Continuing Appropriations Act, 2015, Public Law 113-235. NCEI launched publicly on April 22, 2015.
Processing Documents
    • CDR Source Code
      • CDR Source Code (download)
        This source code is for reference only. The source code is provided to maintain transparency of the algorithm and processes used in creating the Climate Data Record (CDR). The source code is not intended to be portable to any computer system(s) beyond that of the original CDR producer's environment.
Source Datasets
  • NOAA Pathfinder AVHRR SST (PFSST)
    • Navy 6-hourly AVHRR SST data
      • International Comprehensive Ocean Atmosphere Dataset (ICOADS) Release 2.5
        • Global Telecommunications System (GTS) SST observations from ships and buoys (moored and drifting)
          • NASA GSFC Sea Ice Concentration
            • NOAA NCEP 1/2 Degree Grid Sea Ice Concentration
              • Land/Sea Mask

                Last Modified: 2015-10-29

                For questions about the information on this page, please email: ncdc.metadata@noaa.gov