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    • MetOp-B ASCAT Level 2 Ocean Surface Wind Vectors Optimized for Coastal Ocean

    Metadata Updated: December 6, 2023

    This dataset contains operational near-real-time Level 2 coastal ocean surface wind vector retrievals from the Advanced Scatterometer (ASCAT) on MetOp-B at 12.5 km sampling resolution (note: the effective resolution is 25 km). It is a product of the European Organization for the Exploitation of Meteorological Satellites (EUMETSAT) Ocean and Sea Ice Satellite Application Facility (OSI SAF) provided through the Royal Netherlands Meteorological Institute (KNMI). This coastal dataset differs from the standard 12.5 and 25 km datasets in that it utilizes a spatial box filter (rather than the Hamming filter) to generate a spatial average of the Sigma-0 retrievals from the Level 1B dataset; all full resolution Sigma-0 retrievals within a 15 km radius of the wind vector cell centroid are used in the averaging. Since the full resolution L1B Sigma-0 retrievals are used, all non-sea retrievals are discarded prior to the Sigma-0 averaging. Each box average Sigma-0 is then used to compute the wind vector cell using the same CMOD5.n geophysical model function as in the standard OSI SAF ASCAT wind vector datasets. With this enhanced coastal retrieval, winds can be computed as close to ~15 km from the coast, as compared to the static ~35 km land mask in the standard 12.5 km dataset. Each file is provided in netCDF version 3 format, and contains one full orbit derived from 3-minute orbit granules. Latency is approximately 2 hours from the latest measurement. The beginning of the orbit is defined by the first wind vector cell measurement within the first 3-minute orbit granule that starts north of the Equator in the ascending node. ASCAT is a C-band dual swath fan beam radar scatterometer providing two independent swaths of backscatter retrievals in sun-synchronous polar orbit aboard the MetOp-B platform. For more information on the MetOp-B mission, please visit: https://www.eumetsat.int/our-satellites/metop-series . For more timely announcements, users are encouraged to register with the KNMI scatterometer email list: scat@knmi.nl. Users are also highly advised to check the dataset user guide periodically for updates and new information on known problems and issues. All intellectual property rights of the OSI SAF products belong to EUMETSAT. The use of these products is granted to every interested user, free of charge. If you wish to use these products, EUMETSAT's copyright credit must be shown by displaying the words "copyright (year) EUMETSAT" on each of the products used.

    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.

    Downloads & Resources

    References

    https://doi.org/10.1109/TGRS.2011.2175001

    Dates

    Metadata Created Date December 1, 2022
    Metadata Updated Date December 6, 2023

    Metadata Source

    Harvested from NASA Data.json

    Other Data Resources

    Graphic Preview

    Thumbnail

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date December 1, 2022
    Metadata Updated Date December 6, 2023
    Publisher NASA/JPL/PODAAC
    Maintainer
    Identifier C2075141605-POCLOUD
    Data First Published 2013-05-24
    Language en-US
    Data Last Modified 2017-04-28
    Category MetOp, geospatial
    Public Access Level public
    Bureau Code 026:00
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Metadata Catalog ID https://data.nasa.gov/data.json
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Citation EUMETSAT/OSI SAF. 2013-06-07. MetOp-B ASCAT Level 2 Ocean Surface Wind Vectors Optimized for Coastal Ocean. Version Operational/Near-Real-Time. MetOp-B ASCAT Level 2 Ocean Surface Wind Vectors Optimized for Coastal Ocean. KNMI, Royal Netherlands Meteorological Institute. Archived by National Aeronautics and Space Administration, U.S. Government, KNMI. https://scatterometer.knmi.nl/publications/pdf/ASCAT_Product_Manual.pdf. EUMETSAT/OSI SAF, KNMI, 2013-06-07, MetOp-B ASCAT Level 2 Ocean Surface Wind Vectors Optimized for Coastal Ocean, https://scatterometer.knmi.nl/publications/pdf/ASCAT_Product_Manual.pdf.
    Creator EUMETSAT/OSI SAF
    Graphic Preview Description Thumbnail
    Graphic Preview File https://podaac.jpl.nasa.gov/Podaac/thumbnails/ASCATB-L2-Coastal.jpg
    Harvest Object Id b506e5b5-3c4b-460b-82cc-fc731f3101cd
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    Homepage URL https://cmr.earthdata.nasa.gov:443/search/concepts/C2075141605-POCLOUD.html
    Metadata Type geospatial
    Old Spatial -180.0 -89.6 180.0 89.6
    Program Code 026:001
    Related Documents https://doi.org/10.1109/TGRS.2011.2175001
    Release Place KNMI, Royal Netherlands Meteorological Institute
    Series Name MetOp-B ASCAT Level 2 Ocean Surface Wind Vectors Optimized for Coastal Ocean
    Source Datajson Identifier True
    Source Hash 4a3a2536d3e954b11dfb867a79e6e9ed9ef1d056d61010a371f4ed947b6bf849
    Source Schema Version 1.1
    Spatial
    Temporal 2012-10-29T01:03:01Z/2023-02-28T00:00:00Z

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