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    • GPM Ground Validation Passive Aquatic Listener (PAL)

    Metadata Updated: September 19, 2025

    The GPM Ground Validation Passive Aquatic Listener (PAL) dataset contains underwater hydrophone data at a one-minute time step with a typical 5 km diameter footprint when deployed or drifting at 1 km depth. Areal rain rate and wind speed estimates are mutually exclusive, meaning that time periods that are unambiguously identified as rain are used to estimate rain rate, and wind speed is only estimated in the absence of rain. The data are available in netCDF-4 format and include time, interpolated geolocation data, the rain rate or wind speed estimates for each time, and location pair. PALs are deployed irregularly on Argo ocean profiling floats and moorings, typically as part of field campaigns. As such, the number of PALs collecting data is inconsistent in time and space. The entire dataset covers the period from October 18, 2010, through July 28, 2021.

    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 April 11, 2025
    Metadata Updated Date September 19, 2025

    Metadata Source

    Harvested from NASA Data.json

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date April 11, 2025
    Metadata Updated Date September 19, 2025
    Publisher NASA/MSFC/GHRC
    Maintainer
    Identifier 10.5067/GPMGV/PAL/DATA101
    Data Last Modified 2025-09-11
    Category Earth Science
    Public Access Level public
    Bureau Code 026:00
    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
    Harvest Object Id 91628058-8b3d-40b8-b1dc-5967e989e956
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    Homepage URL https://doi.org/10.1029/2022GL102087
    Old Spatial "CARTESIAN",{"NorthBoundingCoordinate":53.335,"WestBoundingCoordinate":-179.999,"EastBoundingCoordinate":179.999,"SouthBoundingCoordinate":-18.928}
    Program Code 026:000
    Source Datajson Identifier True
    Source Hash 96c8ab677bbd8f328d985e4dc37a11d584609222b750837fe9c04986a1ec20a9
    Source Schema Version 1.1
    Spatial
    Temporal 2010-10-18/2010-10-18

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