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    • NASADEM Merged DEM Global 1 arc second nc V001

    Metadata Updated: December 6, 2023

    The Land Processes Distributed Active Archive Center (LP DAAC) is responsible for the archive and distribution of the NASA Making Earth System Data Records for Use in Research Environments (MEaSUREs) Digital Elevation Model (DEM) version 1 (NASADEM_NC) dataset, which provides global elevation data at 1 arc second spacing.

    NASADEM data products were derived from original telemetry data from the Shuttle Radar Topography Mission (SRTM), a collaboration between NASA and the National Geospatial-Intelligence Agency (NGA), as well as participation from the German and Italian space agencies. SRTM’s primary focus was to generate a near-global DEM of the Earth using radar interferometry. It was a primary component of the payload on space shuttle Endeavour during its STS-99 mission, which was launched on February 11, 2000, and flew for 11 days. In addition to Terra Advanced Spaceborne Thermal and Reflection Radiometer (ASTER) Global Digital Elevation Model (GDEM) Version 3 data, NASADEM also relied on Ice, Cloud, and Land Elevation Satellite (ICESat) Geoscience Laser Altimeter System (GLAS) ground control points of its lidar shots to improve surface elevation measurements that led to improved geolocation accuracy. Other reprocessing improvements include the conversion to geoid reference and the use of GDEMs and Advanced Land Observing Satellite Panchromatic Remote-sensing instrument for Stereo Mapping (PRISM) AW3D30 DEM, and interpolation for void filling.

    NASADEM are distributed in 1° by 1° tiles and consist of all land between 60° N and 56° S latitude. This accounts for about 80% of Earth’s total landmass.

    NASADEM_NC data product layer includes DEM. The NUM layer indicates the number of scenes that were processed for each pixel and the source of the data. The source of each elevation pixel in the corresponding NASADEM_NUMNC product.

    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 November 12, 2020
    Metadata Updated Date December 6, 2023

    Metadata Source

    Harvested from NASA Data.json

    Other Data Resources

    Graphic Preview

    Browse image for Earthdata Search

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date November 12, 2020
    Metadata Updated Date December 6, 2023
    Publisher LP DAAC
    Maintainer
    Identifier C1546314436-LPDAAC_ECS
    Data First Published 2018-09-06
    Language en-US
    Data Last Modified 2000-02-21
    Category 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 NASA JPL. 2020-02-13. NASADEM_NC.001. NASADEM Merged DEM Global 1 arc second nc V001. Archived by National Aeronautics and Space Administration, U.S. Government, NASA EOSDIS Land Processes DAAC. https://doi.org/10.5067/MEASURES/NASADEM/NASADEM_NC.001. https://doi.org/10.5067/MEaSUREs/NASADEM/NASADEM_NC.001. The DOI landing page provides citations in APA and Chicago styles..
    Creator NASA JPL
    Graphic Preview Description Browse image for Earthdata Search
    Graphic Preview File https://e4ftl01.cr.usgs.gov//WORKING/BRWS/Browse.001/2018.09.13/NASADEM_NC_n37e109.1.jpg?_ga=2.242382146.1391794668.1578923852-2066674673.1574795892
    Harvest Object Id 673ef56b-6a0b-44dc-83e7-735df8656b35
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    Homepage URL https://doi.org/10.5067/MEASURES/NASADEM/NASADEM_NC.001
    Metadata Type geospatial
    Old Spatial -180.0 -56.0 180.0 60.0
    Program Code 026:001
    Series Name NASADEM_NC.001
    Source Datajson Identifier True
    Source Hash 8df39556c161009cfad197d663cd38a3d0217e89e503af36b99efedee88a4ca3
    Source Schema Version 1.1
    Spatial
    Temporal 2000-02-11T00:00:00Z/2000-02-21T23:59:59Z

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