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    • ABoVE: Passive Microwave-derived Annual Snow Melt Duration Date Maps, 1988-2018

    Metadata Updated: December 6, 2023

    This dataset provides the annual period of snowpack melting (i.e., snow melt duration, SMD) across northwest Canada; Alaska, U.S.; and parts of far eastern Russia at 6.25 km resolution for the period 1988-2018. SMD is the number of days between the main melt onset date (MMOD) and the last day of seasonal snow cover when the melting of snow is complete. These dates were derived from the Making Earth Science Data Records for Use in Research Environments (MEaSUREs) Calibrated Enhanced-Resolution Passive Microwave (PMW) EASE-Grid Brightness Temperature (Tb) Earth System Data Record (ESDR). This dataset documents variability in SMD across space and the 31-year temporal period. The data from 1988-2016 included a coastal mask removing coastal pixels due to potential water contamination from coarse brightness temperature observations (Dersken et al., 2012). There is not a coastal mask for the 2017-2018 data. The full data are included, and data users should be aware that coastal values can be adversely affected by adjacent water bodies.

    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 6, 2023

    Metadata Source

    Harvested from NASA Data.json

    Other Data Resources

    Graphic Preview

    Descriptive statistics for snow melt duration (SMD) for the period 1988-2016, including mean, standard deviation, and coefficient of variation. Units are the number of days per year. Figure courtesy of dataset authors.

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date December 1, 2022
    Metadata Updated Date December 6, 2023
    Publisher ORNL_DAAC
    Maintainer
    Identifier C2223093928-ORNL_CLOUD
    Data First Published 2022-02-23
    Language en-US
    Data Last Modified 2023-08-09
    Category ABoVE, 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 Pan, C.G., P.B. Kirchner, J.S. Kimball, and J. Du. 2021. ABoVE: Passive Microwave-derived Annual Snow Melt Duration Date Maps, 1988-2018. ORNL DAAC, Oak Ridge, Tennessee, USA. https://doi.org/10.3334/ORNLDAAC/1843
    Graphic Preview Description Descriptive statistics for snow melt duration (SMD) for the period 1988-2016, including mean, standard deviation, and coefficient of variation. Units are the number of days per year. Figure courtesy of dataset authors.
    Graphic Preview File https://daac.ornl.gov/ABOVE/guides/SnowMeltDuration_PMicrowave_Fig1.jpg
    Harvest Object Id 317990ca-23d6-4764-bf2c-8c476070ebd5
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    Homepage URL https://doi.org/10.3334/ORNLDAAC/1843
    Metadata Type geospatial
    Old Spatial -180.0 51.6 -107.83 72.41
    Program Code 026:001
    Source Datajson Identifier True
    Source Hash d8d396e439dcbc1b8ee8eaa79067634407d1778228e8ecde87555443985acd35
    Source Schema Version 1.1
    Spatial
    Temporal 1988-02-09T00:00:00Z/2018-07-20T23:59:59Z

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