Permafrost base

Alternative definitions (3), class: vernacular (0)

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Term: Permafrost base
Definition: The lower boundary surface of permafrost, above which temperatures are perennially below 0 degrees Celsius (cryotic) and below which temperatures are perennially above 0 degrees Celsius (noncryotic).
GCW NSIDCCryosphere
Created 2022.03.08
Last Modified 2023.03.27
Contributed by GCW Glossary
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