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    • This is a Non-Federal dataset covered by different Terms of Use than Data.gov.

    ABoVE: Rain-on-Snow Frequency and Distribution during Cold Seasons, Alaska, 2003-2016

    Metadata Updated: February 23, 2025

    This dataset provides maps of rain-on-snow (ROS) events across Alaska for the individual months of November to March 2002-2011 and November to March 2012-2016, and annual water year summary maps for 2003-2011 and 2013-2016. ROS events were defined as changes in passive microwave (PM) detection in surface snow wetness and isothermal states induced by atmospheric processes often associated with winter rainfall. The data are summations of the number of days with ROS events per pixel at 6-km spatial resolution per month or per 5-month water year. The daily ROS record encompassed the months when snowmelt from solar irradiance is minimal and snow cover is widespread and relatively consistent throughout the region. Daily ROS geospatial classification across Alaska was derived by combining snow cover and daily microwave brightness temperature retrievals sensitive to landscape freeze-thaw dynamics from overlapping (1) Moderate Resolution Imaging Spectroradiometer (MODIS) MOD10A2 eight-day maximum snow cover extent (SCE) product and (2) Advanced Microwave Scanning Radiometer for EOS (AMSR-E) (2002-2011) and the Advanced Microwave Scanning Radiometer 2 (AMSR2) (2012-to present) Microwave Radiation Imager (MWRI) observations at 19 GHz and 37 GHz.

    Access & Use Information

    Public: This dataset is intended for public access and use. Non-Federal: This dataset is covered by different Terms of Use than Data.gov. License: No license information was provided.

    Downloads & Resources

    Dates

    Metadata Created Date February 23, 2025
    Metadata Updated Date February 23, 2025

    Metadata Source

    Harvested from nasa test json

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date February 23, 2025
    Metadata Updated Date February 23, 2025
    Publisher ORNL_DAAC
    Maintainer
    Identifier C2162145449-ORNL_CLOUD
    Data First Published 2018-12-19
    Language en-US
    Data Last Modified 2025-02-19
    Category ABoVE, geospatial
    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 d0b1dddf-9cdd-4f1c-93bf-9508ac63c762
    Harvest Source Id a73e0c30-4684-40ef-908e-d22e9e9e5f86
    Harvest Source Title nasa test json
    Homepage URL https://doi.org/10.3334/ORNLDAAC/1611
    Metadata Type geospatial
    Old Spatial -175.4 48.62 -111.54 73.85
    Program Code 026:001
    Source Datajson Identifier True
    Source Hash 0007ca2408ad0fc4537efcec1574aef20e0e8d06cdb3f91b1328b61777c4cb9f
    Source Schema Version 1.1
    Spatial
    Temporal 2002-11-01T00:00:00Z/2016-12-31T23:59:59Z

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