GGD318_2

Circum-Arctic Map of Permafrost and Ground-Ice Conditions, Version 2

Version 2 eng; usa
  • Abstract
    The Circum-Arctic permafrost and ground ice map is available via ftp in ESRI Shapefile format and Equal-Area Scalable Earth Grid (EASE-Grid) format. See the Format section for an explanation of the files provided via FTP. The circumpolar permafrost and ground ice data contribute to a unified international data set that depicts the distribution and properties of permafrost and ground ice in the Northern Hemisphere (20°N to 90°N). The re-gridded data set shows discontinuous, sporadic, or isolated permafrost boundaries. Permafrost extent is estimated in percent area (90-100 percent, 50-90 percent, 10-50 percent, <10 percent, and no permafrost). Relative abundance of ground ice in the upper 20 m is estimated in percent volume (>20 percent, 10-20 percent, <10 percent, and 0 percent). The data set also contains the location of subsea and relict permafrost. the gridded data are gridded at 12.5 km, 25 km, and 0.5 degree resolution. The shapefiles were derived from the original 1:10,000,000 paper map (Brown et al. 1997) Permafrost, or permanently frozen ground, is ground (soil, sediment, or rock) that remains at or below 0°C for at least two years (Permafrost Subcommittee, 1988). It occurs both on land and beneath offshore arctic continental shelves, and underlies about 22 percent of the Earth's land surface. For more information on the creation of the original map, see Heginbottom et al. (1993). The original paper map also includes information on the relative abundance of ice wedges, massive ice bodies and Pingos, ranges of permafrost temperature and thickness (Brown et al. 1997).
  • Purpose
    Scientific Research

Data Identification Fields:

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    Processing Level

    NA

    Quality
    Collection Progress

    Complete

Related URLs
    Science Keywords
    • EARTH SCIENCE
    • Land Surface
    • Frozen Ground
    • Ground Ice
    • EARTH SCIENCE
    • Cryosphere
    • Frozen Ground
    • Ground Ice
    • EARTH SCIENCE
    • Land Surface
    • Frozen Ground
    • Permafrost
    • EARTH SCIENCE
    • Cryosphere
    • Frozen Ground
    • Permafrost
Other Descriptive Keywords
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ISO Topic Categories
  • GEOSCIENTIFIC INFORMATION
  • IMAGERY/BASE MAPS/EARTH COVER

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Platforms
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    Instruments

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Spatial Information Fields:

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    Coverage Type Zone Identifier Geometry Granule Representation
    HORIZONTAL CARTESIAN GEODETIC
Location Keywords
    • Geographic Region
    • Polar
    • Circumpolar

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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  • J.
    Technical Contact
    J. Heginbottom

    601 Booth Street
    Ottawa, Ontario K1A 0E8

    • 1 613 992 7813
    • 1 613 992 2468
    • Email
  • Jerry
    Technical Contact
    Jerry Brown

    PO Box 7
    Woods Hole, MA 02543

    • 1 508 457 4982
    • 1 508 457 4982
    • Email
  • Oscar
    Technical Contact
    Oscar Ferrians

    This contact does not have any addresses listed.

    This contact does not have any contact mechanisms listed.

  • E.S.
    Technical Contact
    E.S. Melnikov

    Vavilov Str. 30/6-74a
    Moscow, GSP-1, 119

    • 7 095 135 9828
    • 7 095 135 6582
    • Email
  • Jerry
    Technical Contact
    Jerry Brown

    PO Box 7
    Woods Hole, MA 02543

    • 1 508 457 4982
    • 1 508 457 4982
    • Email
  • Oscar
    Technical Contact
    Oscar Ferrians

    This contact does not have any addresses listed.

    This contact does not have any contact mechanisms listed.

  • J.
    Technical Contact
    J. Heginbottom

    601 Booth Street
    Ottawa, Ontario K1A 0E8

    • 1 613 992 7813
    • 1 613 992 2468
    • Email
  • E.S.
    Technical Contact
    E.S. Melnikov

    Vavilov Str. 30/6-74a
    Moscow, GSP-1, 119

    • 7 095 135 9828
    • 7 095 135 6582
    • Email
  • 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.

Collection Citations Fields:

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    Collection Citations
    • Circum-Arctic Map of Permafrost and Ground-Ice Conditions, Version 2
      2

      Published by: National Snow and Ice Data Center