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    • Fractional Snow Covered Area raster - Land Cover Mapping, North Slope of the Arctic National Wildlife Refuge, Alaska, 2019

    Metadata Updated: February 21, 2025

    We compiled the Landsat Level-3 Fractional Snow Covered Area (fSCA) product (Painter et al. 2009, Selkowitz et al. 2017) for the tiles intersecting the study area for 2000–2017. The product estimates fractional snow cover for each 30-m pixel, with possible values of 0% and 15–100%. We masked all data that was not “Clear” (pixel value of 0) in the Revised Cloud Mask layer. Then we calculated the median snow cover for bimonthly periods from all the Landsat imagery for the period (e.g.,all images for 1–15 May, 2000–2017). We assigned the median snow cover fraction to the midpoint of the period (e.g., 8 May). Then we interpolated to a daily time step (e.g., a pixel that was 80% snow covered on 23 April and 20% snow covered on 8 May was estimated to 50% on 1 May). Finally, we stacked the daily observations, and extracted the last date with ≥15% snow cover as the “last snow day.”

    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

    References

    https://iris.fws.gov/APPS/ServCat/Reference/Profile/130645

    Dates

    Metadata Created Date June 1, 2023
    Metadata Updated Date February 21, 2025

    Metadata Source

    Harvested from DOI EDI

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date June 1, 2023
    Metadata Updated Date February 21, 2025
    Publisher U.S. Fish and Wildlife Service
    Maintainer
    @Id http://datainventory.doi.gov/id/dataset/18c19090a54993221283af827dd9c492
    Identifier FWS_ServCat_130645
    Data First Published 2020-06-01T12:00:00Z
    Data Last Modified 2020-06-01
    Category geospatial
    Public Access Level public
    Bureau Code 010:18
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Metadata Catalog ID https://datainventory.doi.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
    Data Quality True
    Harvest Object Id 99ec74f5-cdcc-497d-98f7-cf8a4b8d1217
    Harvest Source Id 52bfcc16-6e15-478f-809a-b1bc76f1aeda
    Harvest Source Title DOI EDI
    Homepage URL https://iris.fws.gov/APPS/ServCat/Reference/Profile/130645
    Metadata Type geospatial
    Old Spatial -149.387222,66.7421341,-141.000626,70.1697845
    Program Code 010:028, 010:094
    Publisher Hierarchy White House > U.S. Department of the Interior > U.S. Fish and Wildlife Service
    Related Documents https://iris.fws.gov/APPS/ServCat/Reference/Profile/130645
    Source Datajson Identifier True
    Source Hash a9513372e40a558efb07bb912d6049d312425c5f06e0992d3af1ecd2048fe71a
    Source Schema Version 1.1
    Spatial {"type": "Polygon", "coordinates": -149.387222, 66.7421341, -149.387222, 70.1697845, -141.000626, 70.1697845, -141.000626, 66.7421341, -149.387222, 66.7421341}
    Temporal 2018-10-01T12:00:00Z/2019-07-01T12:00:00Z

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