GGD313_1

Circumpolar Active Layer Monitoring (CALM) Program Network, Version 1

Version 1 eng; usa
  • Abstract
    The CALM network includes 168 active sites in both hemispheres with 15 participating countries. This network represents the only coordinated and standardized program of observations using standard measurement protocols designed to observe and detect decadal changes in the dynamics of seasonal thawing and freezing in high-latitude soils. The Intellectual Merit of this study lies in the need for long-term time series of active layer depth, ground temperature, and thaw settlement measurements at the same locations and across diverse terrain types and regions in order to identify scales of spatial variation, establish trends, and validate models. The active layer thickness is measured by physical probing on grids ranging in size from 100 to 1000 meters, by probing at a single point or along transects or from permanently installed frost tubes and soil temperature cables. Sites include several coastal to inland transects in North America, a longitudinal array of sites across Eurasia, and individual sites in several mid-latitude, mountainous regions. The majority of the sites are in arctic tundra regions consisting of fine grained sediments. Bouldery and rocky sites in mountains are being added to the network primarily in Europe as part of the EC Permafrost and Climate in Europe (PACE) project. CALM is being considered as the part of the Global Climate Observing System (GCOS). CALM is closely affiliated with the International Permafrost Association (IPA), several IPA working groups, and the International Tundra Experiment (ITEX). The current protocol for observing the active layer thickness is given in the published ITEX Manual and on the ITEX and IPA Web sites. These activities are part of the IPA Global Geocryological Database (GGD). A map on the CAPS CD-ROM illustrates the locations of the 130 sites. A comprehensive metadata file for all sites is available. The CAPS CD-ROM contains detailed metadata and summary data and can be ordered from the Order Data Button and the data can be obtained from the Order External Data Button.
  • 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
    • Active Layer
    • EARTH SCIENCE
    • Cryosphere
    • Frozen Ground
    • Active Layer
    • EARTH SCIENCE
    • Cryosphere
    • Snow/Ice
    • Permafrost
    • EARTH SCIENCE
    • Cryosphere
    • Frozen Ground
    • Permafrost
    • EARTH SCIENCE
    • Land Surface
    • Soils
    • Soil Moisture/Water Content
    • EARTH SCIENCE
    • Land Surface
    • Soils
    • Soil Temperature
    • EARTH SCIENCE
    • Land Surface
    • Frozen Ground
    • Soil Temperature
    • EARTH SCIENCE
    • Cryosphere
    • Frozen Ground
    • Soil Temperature

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Platforms
  • Not provided
    Instruments

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Spatial Information Fields:

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    Coverage Type Zone Identifier Geometry Granule Representation
    HORIZONTAL CARTESIAN GEODETIC
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    • Continent
    • Europe
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    • Austria
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    • North America
    • Canada
    • Continent
    • Asia
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    • circumpolar
    • Geographic Region
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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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  • Kenneth
    Technical Contact
    Kenneth Hinkel

    ML131
    Cincinnati, OH 45221-0131

  • Frederick
    Technical Contact
    Frederick Nelson

    Newark, DE

  • Jerry
    Technical Contact
    Jerry Brown

    PO Box 7
    Woods Hole, MA 02543

    • 1 508 457 4982
    • 1 508 457 4982
    • Email
  • Brown,
    Technical Contact
    Brown, (comp.)

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  • 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
    • Circumpolar Active Layer Monitoring (CALM) Program Network, Version 1
      1

      Published by: National Snow and Ice Data Center