Dataset
Antarctic sea ice extent
owid.antarctica-sea-ice-extent
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About
Average Antarctic sea ice extent in September, the month when it is usually at its highest. Average Antarctic sea ice extent in February, the month when it is usually at its lowest.
Cite as: National Snow and Ice Data Center – Sea Ice Index (2026) – with minor processing by Our World in Data. “Maximum Antarctic sea ice extent” [dataset]. National Snow and Ice Data Center, “Sea Ice Index Version 4” [original data].
- Publisher
- Our World in Data
- Tier
- Official
- Covers
- 1979–2026
- Places
- Countries, regions and groups of the world
- Updated
- quarterly
- Last modified
- 2026-10-12
- Units
- million square kilometers
- License
- Creative Commons Attribution 4.0 International
- Method
- https://ourworldindata.org/grapher/antarctica-sea-ice-extent
Columns
| Name | Type | Description |
|---|---|---|
| entity | text | country, region or group |
| code | text | ISO 3166-1 alpha-3, OWID_ for OWID's own groups, empty for most regions |
| year | integer | |
| antarctic_sea_ice_extent_max | number | Maximum Antarctic sea ice extent (million square kilometers) |
| antarctic_sea_ice_extent_min | number | Minimum Antarctic sea ice extent (million square kilometers) |
Dimensions
| Name | Values |
|---|---|
| entity | |
| year |