slug: sea-ice
name: Sea Ice
domain: ocean
subdomain: physical
authorities:
  - gcos: sea-ice
  - goos: sea-ice
external_ids:
  nvs_uri: null
  cf_standard_name: sea_ice_area_fraction
  iadopt_concepts:
    property: concentration
    entity: sea-ice
  gcos_overlap: gcos:sea-ice
canonical_units: "1"
gcos_requirement_tier:
  threshold: null
  breakthrough: null
  goal: null
description: |
  Extent, concentration, thickness, drift and age of polar sea ice from
  passive microwave (SSMIS), altimetry (CryoSat-2, ICESat-2), SAR and
  visible/IR satellites. Headline indicator of Arctic and Antarctic change.
theme: ocean
demos: []
status: documented
sources:
  - https://gcos.wmo.int/site/global-climate-observing-system-gcos/essential-climate-variables/sea-ice
  - https://goosocean.org/eov/sea-ice/