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  • NOAA Climate Data Record (CDR) of AVHRR Daily and Monthly Aerosol Optical Thickness over Global Oceans, Version 2.0

    Metadata Updated: March 11, 2021

    This NOAA Climate Data Record (CDR) of Aerosol Optical Thickness (AOT) is derived from data taken over global oceans from the PATMOS-x AVHRR level-2b channel 1 (0.63 micron) orbital clear-sky radiance. The retrieval is performed for selected spatial (8-km) and temporal (1 time per day) resolution in cloud free condition during daytime over global oceans. The AVHRR AOT CDR version 2 extends from 1981 to 2009 and includes both daily and monthly data in an equal angle grid (0.1x0.1 degree). Version 2 has improved cloud screening and data processing from version 1. Due to the relatively large uncertainties associated with surface reflectance over water glint area and land surface as well as limited AVHRR retrieval channels, the current algorithm only performs retrieval over non-glint water surface (specifically at the anti-solar side of the orbit and viewing angle is larger than 40 degree away from the specular ray).

    Access & Use Information

    Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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    Dates

    Metadata Created Date March 11, 2021
    Metadata Updated Date March 11, 2021
    Data Update Frequency irregular

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date March 11, 2021
    Metadata Updated Date March 11, 2021
    Publisher DOC/NOAA/NESDIS/NCDC > National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce (Point of Contact)
    Unique Identifier Unknown
    Maintainer
    Identifier gov.noaa.ncdc:C00858
    Language en-US
    Data Last Modified 2014-05-19
    Public Access Level public
    Data Update Frequency irregular
    Bureau Code 006:48
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Old Spatial {"type": "Polygon", "coordinates": -180.0, -90.0, 180.0, -90.0, 180.0, 90.0, -180.0, 90.0, -180.0, -90.0}
    Program Code 006:059
    Source Datajson Identifier True
    Source Hash 0666f84dd1afaedff74bd0acba6d44feee83bda7
    Source Schema Version 1.1
    Spatial {"type": "Polygon", "coordinates": -180.0, -90.0, 180.0, -90.0, 180.0, 90.0, -180.0, 90.0, -180.0, -90.0}
    Temporal 1981-01-01T00:00:00/2009-12-31T00:00:00

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