NSIDC-0304_1

GLAS/ICESat 500 m Laser Altimetry Digital Elevation Model of Antarctica, Version 1

Version 1 eng; usa
  • Abstract
    The Geoscience Laser Altimeter System (GLAS) instrument on the Ice, Cloud, and land Elevation Satellite (ICESat) provides global measurements of elevation, and repeats measurements along nearly-identical tracks; its primary mission is to measure changes in ice volume (mass balance) over time. This digital elevation model (DEM) of Antarctica is derived from GLAS/ICESat laser altimetry profile data and provides new surface elevation grids of the ice sheets and coastal areas, with greater latitudinal extent and fewer slope-related effects than radar altimetry. This DEM is generated from the first seven operational periods (from February 2003 through June 2005) of the GLAS instrument. It is provided on polar stereographic grids at 500 m grid spacing. The grid covers all of Antarctica north of 86° S. Elevations are reported as centimeters above the datums, relative to both the WGS 84 ellipsoid and the EGM96 geoid, in two separate elevation data files. A data quality map of the interpolation distance is distributed in addition to the elevation data. ENVI header files are also provided. The data are in 4-byte (long) signed integer binary files (big endian byte order) and are available via FTP.
  • Purpose
    Scientific Research

Data Identification Fields:

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    Processing Level

    NA

    Quality
    Collection Progress

    Complete

Related URLs
    Science Keywords
    • EARTH SCIENCE
    • Terrestrial Hydrosphere
    • Glaciers/Ice Sheets
    • Glacier Elevation/Ice Sheet Elevation
    • EARTH SCIENCE
    • Cryosphere
    • Glaciers/Ice Sheets
    • Glacier Elevation/Ice Sheet Elevation
Other Descriptive Keywords
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ISO Topic Categories
  • ELEVATION

Acquisition Information Fields:

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Platforms
  • Earth Observation Satellites
    ICESAT
    Instruments
    • GLAS

Temporal Information Fields:

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Spatial Information Fields:

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    Coverage Type Zone Identifier Geometry Granule Representation
    HORIZONTAL CARTESIAN GEODETIC
Location Keywords
    • Continent
    • Antarctica

Data Centers

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  • National Snow and Ice Data Center
    ARCHIVER

    National Snow and Ice Data Center
    CIRES, 449 UCB
    University of Colorado
    Boulder, CO 80309-0449

    • 1 303 492 6199
    • 1 303 492 2468
    • Email
  • National Snow and Ice Data Center
    DISTRIBUTOR

    National Snow and Ice Data Center
    CIRES, 449 UCB
    University of Colorado
    Boulder, CO 80309-0449

    • 1 303 492 6199
    • 1 303 492 2468
    • Email

Data Contacts

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  • John
    Technical Contact
    John Dimarzio

    SGT, Inc.
    NASA/Goddard Space Flight Center
    Cryospheric Sciences Branch Code 614.1
    Greenbelt, MD 20771

  • Anita
    Technical Contact
    Anita Brenner

    Code 614.5
    Greenbelt, MD 20771

  • Helen
    Technical Contact
    Helen Fricker

    University of California, San Diego
    9500 Gilman Dr.
    La Jolla, California 92093

    This contact does not have any contact mechanisms listed.

  • Robert
    Technical Contact
    Robert Schutz

    GLAS Science Team Lead
    University of Texas at Austin
    Center for Space Research
    Austin, TX 78712-1085

    This contact does not have any contact mechanisms listed.

  • Christopher
    Technical Contact
    Christopher Shuman

    Cryospheric Sciences Branch
    Code 614.1
    NASA/Goddard Space Flight Center
    Greenbelt, MD 20771

  • H.
    Technical Contact
    H. Zwally

    Laboratory for Hydrospheric Processes
    NASA/Goddard Space Flight Center
    Code 971
    Greenbelt, MD 20771

    • 1 301 614 5643
    • 1 301 614 5644
    • Email
  • John
    Technical Contact
    John DiMarzio

    This contact does not have any addresses listed.

    This contact does not have any contact mechanisms listed.

  • National Snow and Ice Data Center
    User Services
    National Snow and Ice Data Center

    Boulder, Colorado

    This contact does not have any contact mechanisms listed.

  • NSIDC
    Data Center Contact
    NSIDC Services

    National Snow and Ice Data Center

    CIRES, 449 UCB
    University of Colorado
    Boulder, CO 80309-0449

    • 1 303 492 6199
    • 1 303 492 2468
    • Email
  • NSIDC
    Data Center Contact
    NSIDC Services

    National Snow and Ice Data Center

    CIRES, 449 UCB
    University of Colorado
    Boulder, CO 80309-0449

    • 1 303 492 6199
    • 1 303 492 2468
    • Email

Collection Citations Fields:

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    Collection Citations
    • GLAS/ICESat 500 m Laser Altimetry Digital Elevation Model of Antarctica, Version 1
      1

      Published by: National Snow and Ice Data Center