Video

Successful simulation of the lead formation in Arctic sea-ice

Scientists from the Alfred-Wegener-Institute (AWI) and the University of Hamburg have succeeded in realistically simulating the emergence of large channels in the Arctic sea ice in a computer model. Two approaches were decisive for this success: On the one hand, the researchers had increased the spatial resolution of the FESOM AWI sea-ice ocean model. On the other hand, they were able to improve the numerical solution to the equation so that the simulation of the lead formation holds up well when compared to real sea-ice satellite data. This video shows how the model is simulating the formation of leads in the Arctic sea-ice cover the years 2005 to 2014.

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How the Arctic Ocean Became Saline

Arctic

How the Arctic Ocean Became Saline

The Arctic Ocean was once a gigantic freshwater lake. Only after the land bridge between Greenland and Scotland had submerged far enough did vast quantities of salt water pour in from the Atlantic. With the help of a climate model, researchers from the Alfred Wegener Institute have demonstrated how this process took place, allowing us for the first time to understand more accurately how Atlantic circulation as we know it today came about. The results of the study have now been published in the journal Nature Communications.

Climate researchers are pursuing better ice and weather predictions for improved safety in the Arctic and Antarctic

Project launch

Climate researchers are pursuing better ice and weather predictions for improved safety in the Arctic and Antarctic

Today, the World Meteorological Organization (WMO) and the Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research (AWI) officially announced the start of the international research initiative Year of Polar Prediction.

Irreversible ocean warming threatens the Filchner-Ronne Ice Shelf

Antarctic

Irreversible ocean warming threatens the Filchner-Ronne Ice Shelf

By the second half of this century, rising air temperatures above the Weddell Sea could set off a self-amplifying meltwater feedback cycle under the Filchner-Ronne Ice Shelf, ultimately causing the second-largest ice shelf in the Antarctic to shrink dramatically. Climate researchers at the Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research (AWI), recently made this prediction in a new study, which can be found in the latest issue of the Journal of Climate, released today. In the study, the researchers use an ice-ocean model created in Bremerhaven to decode the oceanographic and physical processes that could lead