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    • RapidScat Level 2A Surface Flagged Sigma-0 and Attenuations in 25km Swath Grid Version 2.0

    Metadata Updated: December 6, 2023

    This dataset contains the Version 2.0 ISS-RapidScat Level 2A 25km science data record, which provides surface-flagged sigma-0 in 25km Wind Vector Cells processed using the pulse "egg" Sigma-0 data provided by the Level 1B dataset. Due to the circular scan of the SeaWinds instrument the expected number of Sigma-0 cells per WVC is not constant. To minimize the L2A data volume, the Sigma-0 cell data are stored as "lists" for each WVC row, with each list indexed by a "cell_index" array to indicate the cross-track WVC membership of the data. Each cell is then checked for land or ice and flagged accordingly. Attenuation corrections for each Sigma-0 measurement are also provided. Data are provided in single-orbit files in HDF-4 format. Version 2.0 represents a complete historical re-processing of the L2A data record (see the technical note for Version 2.0 under Documentation). RapidScat is a Ku-band dual beam circular rotating scatterometer retaining much of the same hardware and functionality of QuikSCAT, with exception of the antenna sub-system and digital interface to the International Space Station (ISS) Columbus module, which is where RapidScat is mounted. The NASA mission is officially referred to as ISS-RapidScat. Unlike QuikSCAT, ISS-RapidScat is not in sun-synchronous orbit, and flies at roughly half the altitude with a low inclination angle that restricts data coverage to the tropics and mid-latitude regions; the extent of latitudinal coverage stretches from approximately 61 degrees North to 61 degrees South. Furthermore, there is no consistent local time of day retrieval. If you have any questions or concerns, please visit our Forum at https://podaac.jpl.nasa.gov/forum/.

    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

    Dates

    Metadata Created Date May 30, 2023
    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 May 30, 2023
    Metadata Updated Date December 6, 2023
    Publisher NASA/JPL/PODAAC
    Maintainer
    Identifier C2633944811-POCLOUD
    Data First Published 2016-09-28
    Language en-US
    Data Last Modified 2017-04-28
    Category ISS_RapidScat, 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 RapidScat Project. 2023-05-15. RapidScat Level 2A Surface Flagged Sigma-0 and Attenuations in 25Km Swath Grid. Version 2.0. RapidScat Level 2A Surface Flagged Sigma-0 and Attenuations in 25Km Swath Grid Version 2.0. PO.DAAC. Archived by National Aeronautics and Space Administration, U.S. Government, PO.DAAC. https://doi.org/10.5067/RSX25-L2A20. https://d2pn8kiwq2w21t.cloudfront.net/documents/issrapidscat_factsheet.pdf. RapidScat Project, PO.DAAC, 2023-05-15, RapidScat Level 2A Surface Flagged Sigma-0 and Attenuations in 25Km Swath Grid Version 2.0, https://d2pn8kiwq2w21t.cloudfront.net/documents/issrapidscat_factsheet.pdf.
    Creator RapidScat Project
    Graphic Preview Description Thumbnail
    Graphic Preview File https://podaac.jpl.nasa.gov/Podaac/thumbnails/RSCAT_L2A_25KM_V1.3.jpg
    Harvest Object Id 97ef72ab-cb2a-4175-8908-417280f3d2ac
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    Homepage URL https://doi.org/10.5067/RSX25-L2A20
    Metadata Type geospatial
    Old Spatial -180.0 -61.0 180.0 61.0
    Program Code 026:001
    Release Place PO.DAAC
    Series Name RapidScat Level 2A Surface Flagged Sigma-0 and Attenuations in 25Km Swath Grid
    Source Datajson Identifier True
    Source Hash 8ca12c5e76f9c46d2fa360358ea40904808342edb32ac447f5437d9b6c56b7ec
    Source Schema Version 1.1
    Spatial
    Temporal 2014-10-03T00:00:00Z/2016-08-19T23:59:59.999Z

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