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 2022.
  • Climatology for the latest WMO's climate periode (1991-2020) has been calculated and added to ease comparison with other climatological products.
  • The statistical significance of trends has been re-calculated, due to errors in the previous version.
  • Plots and maps have been made bigger to show more details.
  • The statistics for the past 10 years has been removed, due to large statistical uncertainty.
More information of the applied data can be found here. The previous version of the climatology is still available here.

This page presents links for data files containing the ice edge coordinates. Ice edges are presented as ice extent percentiles as seen on these maps and are calculated by considering the ensemble of daily ice extent within the same months across a period. An area is defined as sea ice if the ice concentration is larger than 30 %.

In order to document OSI-SAF's impact and enable ongoing support of OSI-SAF, you are obligated to acknowledge OSI-SAF in your work. Therefore, if you wish to use any material presented here please read this file.

This page is a result of the sea ice concentration climatology. To download a summary data set climatology click here.