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OAS accession Detail for 0269677, meta_version: 1. Current meta_version is: 2
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Title: GHRSST Level 4 AVHRR_OI Global Blended Sea Surface Temperature Analysis from NCEI (GDS versions 1 and 2) for 2022-11-01 (NCEI Accession 0269677)
Abstract: 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.
Date received: 20221112
Start date: 20221101
End date: 20221101
Seanames: World-Wide Distribution
West boundary: -179.875
East boundary: 179.875
North boundary: 89.875
South boundary: -89.875
Observation types: satellite data
Instrument types: AVHRR-3
Datatypes: ICE - COVERAGE, SEA SURFACE TEMPERATURE
Submitter: Armstrong, Edward M.
Submitting institution: US NASA; Jet Propulsion Laboratory; Physical Oceanography Distributed Active Archive Center
Collecting institutions: US DOC; NOAA; NESDIS; National Centers for Environmental Information
Contributing projects: GHRSST
Platforms: MetOp-A (064Q), MetOp-B (pid: 12445)
Number of observations:
Supplementary information:
Availability date:
Metadata version: 1
Keydate: 2022-11-12 14:15:24+00
Editdate: 2022-11-12 14:16:08+00