Ice climatology of the Arctic and Antarctic
Dansk version
The Arctic Today
Climate and Weather
- Mean temperatures
  North of 80N

- Ice Extent in the
  Northern Hemisphere

- Minimum Ice Extent
  since 1979

- Monthly mean Sea Ice
  Extent since 1979

Satellite Products
- Sea ice drift and-
  sea ice concentration

- Sea Surface temp. and

- Ice temperatures
Climatological Sea Ice Atlas
Ice concentration
Monthly means
Monthly variations
Ice extent
Download ice edges
Break-up, freeze-up and open water days
Trend (significance)
Surface temperature, sea ice
Surface temperature, ice caps
Sea ice temperature and extent
Model Products
- Ice thickness and volume
- Ice and Ocean Forecasts
Seaice & Navigation
- Satellite Images
  around Greenland

This site has been updated with an extension of the input data record. Moreover, minor changes and improvements have been made:
  • The input data record has been extended from 2015 to 2021.
  • Climatology for the latest WMO's climate periode (1991-2020) has been calculated and added to ease comparison with other climatological products.
  • Plots and maps have been made bigger to show more details.
The previous version of the climatology is still available here.

These maps show the trends and the corresponding p-values of monthly or yearly mean surface temperatures of Greenland and Antarctica in the wmo standard climate period, 1991-2020. An area surface is defined as sea ice if the monthly or yearly mean sea ice concentraion is greater than 15 %. The trend is only plottet if the area has 10 or more years with a sea ice surface.

All plots are based on "Arctic and Antarctic ice Surface Temperature climate data set from thermal Infrared satellite data" data set (AASTI, version 2), produced by DMI and MET (see details here) and EUMETSAT OSISAF data sets OSI-450-a and OSI-430-a.


Toggle period
wmo-standard / full
Annual Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec