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    • GPM GROUND VALIDATION AUTONOMOUS PARSIVEL UNIT (APU) GCPEX V1

    Metadata Updated: December 7, 2023

    The GPM Ground Validation Autonomous Parsivel Unit (APU) GCPEx dataset was collected by the Autonomous Parsivel Unit (APU), which is an optical disdrometer that measures the size and fall velocity of single precipitation particles. The APU consists of the Parsivel (the precipitation measuring instrument), developed by OTT in Germany, and its support systems, which were designed and built by the University of Alabama in Huntsville. The GPM Cold-season Precipitation Experiment (GCPEx) addressed shortcomings in the GPM snowfall retrieval algorithm by collecting microphysical properties, associated remote sensing observations, and coordinated model simulations of precipitating snow. These data sets were collected to aid in the achievement of the over arching goal of GCPEx which is to characterize the ability of multi-frequency active and passive microwave sensors to detect and estimate falling snow. The APU dataset for GCPEx provides precipitation data including raindrop size, raindrop counts, precipitation drop size, precipitation rate, precipitation amount, and snowflake size, counts and distribution. The GCPEx APU data was collected from several sites in Canada during the Winter 2011-2012 period.

    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 December 1, 2022
    Metadata Updated Date December 7, 2023

    Metadata Source

    Harvested from NASA Data.json

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date December 1, 2022
    Metadata Updated Date December 7, 2023
    Publisher NASA/MSFC/GHRC
    Maintainer
    Identifier C1979657178-GHRC_DAAC
    Data First Published 2013-04-16
    Language en-US
    Data Last Modified 2022-05-09
    Category GCPEx, 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 Petersen, Walter A, Ali Tokay, Patrick N Gatlin and Matthew T. Wingo.2013. GPM GROUND VALIDATION AUTONOMOUS PARSIVEL UNIT (APU) GCPEX indicate subset used. Dataset available online from the NASA Global Hydrometeorology Resource Center DAAC, Huntsville, Alabama, U.S.A. DOI: http://dx.doi.org/10.5067/GPMGV/GCPEX/APU/DATA301
    Harvest Object Id d05ff82a-a4f1-4fa7-a086-39905737e2fb
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    Homepage URL https://doi.org/10.5067/GPMGV/GCPEX/APU/DATA301
    Metadata Type geospatial
    Old Spatial -79.9279 44.1765 -79.6403 44.6862
    Program Code 026:001
    Source Datajson Identifier True
    Source Hash 397bcf830ccbbcbb93277c67461161146b86ead14adb991c9b79a43227a277cf
    Source Schema Version 1.1
    Spatial
    Temporal 2011-10-26T20:22:00Z/2012-03-10T23:59:50Z

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