Jump to content Jump to footer
Install App

Install this app on your device for a better experience.


The English version of our glossary is currently under construction and will be regularly updated.


Absence of sea ice.

The ocean is described as ice-free in the absence of sea ice. The entire Arctic Ocean is considered to be ice-free when there are less than one million square kilometres of sea ice. When this is the case, sea ice can only be found in certain coastal regions, esp. north of Greenland or the Canadian Arctic Archipelago.

Calculating sea-ice extent and sea-ice area.