The layer of ground above permafrost that is subject to annual thawing and freezing.

  • > Chokurdakh Scientific Tundra Station

    Field Sites

    STATION NAME AND OWNER The Chokurdakh Scientific TundraA type of ecosystem in which tree growth is limited by low temperatures. The origin of the word

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  • > Canadian High Arctic Research Station CHARS

    Field Sites

    STATION NAME AND OWNER The Canadian High ArcticDefinitions of the Arctic vary according to environmental, geographical, political, cultural and scientific perspectives. Some scientists define the Arctic

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  • > CNR Arctic Station “Dirigibile Italia”

    Field Sites

    STATION NAME AND OWNER The Italian ArcticDefinitions of the Arctic vary according to environmental, geographical, political, cultural and scientific perspectives. Some scientists define the Arctic

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  • > Permafrost

    Glossary

    PermafrostPermafrost is frozen ground that remains at or below zero degrees Celsius (32 degrees Fahrenheit) for two or more years. It forms in regions where

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