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Data Release: Version 4 SeaWiFS Deep Blue
Data Release: Version 4 SeaWiFS Deep Blue
NASA’s Goddard Earth Sciences Data and Information Services Center (GES DISC), in collaboration with Christina Hsu [NASA’s Goddard Space Flight Center—Principal Investigator], is pleased to announce Version 4 of the Long-Term Aerosols over Land and Ocean data products from SeaWiFS (also known as “SeaWiFS Deep Blue”) that cover the period September 4, 1997 to December 11, 2010. These data are from the Consistent Long-Term Aerosol Data Records over Land and Ocean from SeaWiFS Project, which is part of the NASA Making Earth Science Data Records for Use in Research Environments (MEaSUREs) Program.
Version 4 data represent significant improvements over the previous version; all users should upgrade as soon as possible. The improved over-land and ocean algorithms are documented in the literature, as noted at the GEO DISC site (see link, below). Improvements from Version 3 to 4 include:
• improved turbid water filter;
• improved aerosol models over regions with highly absorbing aerosols;
• updates to QA-filtering during Level-3 aggregation;
• fixed minor coding error in ocean Look-Up Table (LUT) search; and
• fixed error where very high Aerosol Optical Thickness (AOT) values greater than 3.5 were incorrectly reported as 0.02.
Additional information on and access to these data are available at disc.sci.gsfc.nasa.gov/datareleases/measures-seawifs-deep-blue-aerosols-version-4-release.