GHRSST Level 4 AVHRR_AMSR_OI Global Blended Sea Surface Temperature Analysis (GDS version 1)

A Group for High Resolution Sea Surface Temperature (GHRSST) global Level 4 sea surface temperature analysis produced daily on a 0.25 degree grid at the NOAA National Climatic Data Center. This product uses optimal interpolation (OI) using data from the Advanced Very High Resolution Radiometer (AVHRR) Pathfinder Version 5 time series (when available, otherwise operational NOAA AVHRR data are used), the Advanced Microwave Scanning Radiometer-EOS (AMSR-E), and in situ ship and buoy observations. A second similar product is available back to 1981 that includes only in situ and AVHRR Pathfinder data in its analysis. The OI analysis is a daily average SST that is bias adjusted using a spatially smoothed 7-day in situ SST average and is thus tuned to about 0.3 meter. Both day and night satellite fields are independently bias adjusted. More information is available at

Data and Resources

Additional Info

Field Value
Last Updated January 30, 2019, 22:22
Created October 24, 2018, 14:43
access_constraints ["Cite as: US National Climatic Data Center (NCDC) (2007). GHRSST Level 4 AVHRR_AMSR_OI Global Blended Sea Surface Temperature Analysis (GDS version 1). National Oceanographic Data Center, NOAA. Dataset. [access date]", "NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose."]
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coupled-resource []
dataset-reference-date [{"type": "publication", "value": "2007-07-26"}, {"type": "revision", "value": "2013-04-26"}]
frequency-of-update asNeeded
graphic-preview-description Preview graphic
graphic-preview-type PNG
guid gov.noaa.nodc:GHRSST-NCDC-L4LRblend-GLOB-AVHRR_AMSR_OI
licence ["accessLevel: Public"]
metadata-date 2019-01-28T20:44:16
metadata-language eng
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temporal-extent-begin 2002-06-01
temporal-extent-end 2011-10-05