authority: gcos
slug: permafrost
name: Permafrost
domain: land
subdomain: cryosphere
authority_id: gcos:permafrost
external_ids:
  nvs_uri: null
  cf_standard_name: null
  iadopt_concepts:
    property: temperature
    entity: permafrost
canonical_units: K
gcos_requirement_tier:
  threshold: null
  breakthrough: null
  goal: null
description: |
  Ground temperature in boreholes and active-layer thickness from CALM and
  GTN-P networks, complemented by satellite-derived permafrost extent.
  Tracks Arctic terrestrial warming and frozen-carbon vulnerability.
theme: cryosphere
demos: []
status: documented
sources:
  - https://gcos.wmo.int/site/global-climate-observing-system-gcos/essential-climate-variables/permafrost