MOSAiC - Multidisciplinary drifting Observatory for the Study of Arctic Climate

Further map and data products around sea ice during the MOSAiC expedition can be found here.

Data products and information around sea ice during the MOSAiC expedition.

It could be the largest-scale Arctic research expedition of all time: in September 2019 the German research icebreaker Polarstern will depart from Tromsø, Norway and, once it has reached its destination, will spend the next year drifting through the Arctic Ocean, trapped in the ice. A total of 600 people from 19 countries, who will be supplied by other icebreakers and aircraft, will participate in the expedition – and several times that number of researchers will subsequently use the data gathered to take climate and ecosystem research to the next level. The mission will be spearheaded by the Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research (AWI). More information about the expedtion here.


Current sea ice maps for Arctic and Antarctic

more maps are availble here...


Aktuelle Beiträge

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Sea Ice Ticker

Dear sea ice fans!

Now that 2020 has begun, the will be resuming its regular Sea Ice Ticker reports from the MOSAiC expedition, and we would like to begin by wishing all our readers a very happy new year! The Sea Ice Ticker will continue to chiefly focus on sea-ice-related activities, but will also address other topics when there are exciting events or findings to report from the MOSAiC drift experiment. The Ticker will be released on a weekly basis. We hope you enjoy reading the new posts and the exclusive updates on the expedition’s progress!

Your team

Read here about the Sea Ice Ticker 22: 20 February 2020 Microwave radar measurements from satellite of seaice during the MOSAiC-Expedition

Sea-ice extent in the Arctic and Antarctic at an average level

14 Feburary 2020

In January the ice cover in the Arctic showed a comparable development to that seen in the past several years. Since the sea-ice extent in the Arctic is naturally limited by the coastlines of adjacent landmasses, the ice can only expand in the Atlantic sector, in the Barents, Bering and Greenland Seas, in the Sea of Okhotsk, and in the Davis Strait to the west of Greenland. The air temperature over the Arctic Ocean at 925 hPa was 1 to 3 °C higher than the long-term average. Further, major expanses of Siberia were much warmer than usual for this time of year. Read more here...


Climatology of atmospheric and oceanic forcing data: Essential information for understanding sea-ice formation processes

07 Ferbuary 2020
The atmosphere is an important component in the climate system and is crucial to sea-ice formation. The air temperature, humidity, pressure and wind fields determine the circulation, and with it, the inflow of warm air masses from the temperate latitudes. In addition, the ocean temperature is the most important factor in determining whether sea ice grows or melts. “These new map products at are an important resource for sea-ice research, but also provide valuable information for other academic and societal actors (e.g. those in the fishing industry, shipping, etc.) with an interest (ecological or economic) in climatic developments in the polar regions,” adds Dr Renate Treffeisen. Read more…

AWI’s Antarctic fast-ice monitoring programme in Atka Bay celebrates 10-year anniversary

31 January 2020
For more than ten years now, regular measurements have been taken of the fast ice, which normally breaks up during the southern summer, before drifting out of the bay into the Weddell Sea. These routine readings in Atka Bay are taken by the overwintering team at the Neumayer III station, starting as soon as the sea ice is safe to walk on (usually June), and ending when the ice starts breaking up in January or February. The team chiefly measures the thickness of the snow, fast ice and platelet ice along a 24-km-long west-to-east transect that spans Atka Bay. Read more here...