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    • ABoVE: Dall Sheep Response to Snow and Landscape Covariates, Alaska, 2005-2008

    Metadata Updated: December 6, 2023

    This dataset provides daily estimates of snow depth and snow density for the study area in Lake Clark National Park and Preserve (LCNPP), Alaska. The data were generated using SnowModel and used as snow covariates along with landscape covariates in modeling efforts to study Dall sheep movements in response to dynamic snow conditions. Thirty adult Dall sheep (12 male, 18 female) were captured and outfitted with global positioning system (GPS) collars programmed to acquire locations every seven hours. Given the individual sheep locations, their distances to land cover (e.g., shrub, forest, glacier), landscape characteristics (e.g., elevation, terrain ruggedness index (TRI), vector ruggedness measure (VRM), slope, and aspect), snow depth and density, MODIS normalized difference snow index (NDSI), and other covariates were determined and are provided in the environmental data file. The snow density and depth data are provided at 25-m, 100-m, 500-m, 2000-m, and 10000-m grid resolutions, at 1-day increments, and cover the period September 1, 2005 through August 31, 2008. The sheep, snow, and landscape data cover the years 2006, 2007, and 2008.

    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

    The western face of the Chigmit Mountains in Lake Clark National Park and Preserve, Alaska. White points are locations from multiple Dall sheep from March through 5 April 2006. The base heatmap depicts the relative, conditional probability of use on 1 April 2006 as predicted by the best model from our second, fine-scale analysis. Hotter colors correspond to higher relative probabilities of use by sheep. White asterisks denote SNOTEL stations. The two insets (a, b) were arbitrarily chosen to depict model predictions of space use along east-west and north-south gradients (from Mahoney et al., 2018).

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date December 1, 2022
    Metadata Updated Date December 6, 2023
    Publisher ORNL_DAAC
    Maintainer
    Identifier C2170971503-ORNL_CLOUD
    Data First Published 2021-11-22
    Language en-US
    Data Last Modified 2023-07-17
    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 Mahoney, P., G. Liston, B. Mangipane, and L.R. Prugh. 2018. ABoVE: Dall Sheep Response to Snow and Landscape Covariates, Alaska, 2005-2008. ORNL DAAC, Oak Ridge, Tennessee, USA. https://doi.org/10.3334/ORNLDAAC/1602
    Graphic Preview Description The western face of the Chigmit Mountains in Lake Clark National Park and Preserve, Alaska. White points are locations from multiple Dall sheep from March through 5 April 2006. The base heatmap depicts the relative, conditional probability of use on 1 April 2006 as predicted by the best model from our second, fine-scale analysis. Hotter colors correspond to higher relative probabilities of use by sheep. White asterisks denote SNOTEL stations. The two insets (a, b) were arbitrarily chosen to depict model predictions of space use along east-west and north-south gradients (from Mahoney et al., 2018).
    Graphic Preview File https://daac.ornl.gov/ABOVE/guides/Dall_Sheep_Snowpack_fig1.png
    Harvest Object Id 2ff168c0-c800-4bda-b809-81149c6662d3
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    Homepage URL https://doi.org/10.3334/ORNLDAAC/1602
    Metadata Type geospatial
    Old Spatial -154.53 59.98 -153.03 61.05
    Program Code 026:001
    Source Datajson Identifier True
    Source Hash 28d37831cc9cba548ec15de53a0611c46626628c5c534cebf922bc5f403620b7
    Source Schema Version 1.1
    Spatial
    Temporal 2005-09-01T00:00:00Z/2008-08-31T23:59:59Z

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