In recent days, the development of the ice cover north of Greenland has attracted considerable attention: within a few weeks, an ice-free strip up to 100 km wide has formed along the coast (Fig.1). Th
The thickness of sea ice determines the heat exchange between the ocean and the atmosphere as well as the resistance against the deforming forces of wind and ocean currents. Already a thin layer of se
Research aircraft from the Alfred Wegener Institute have been surveying the ice-covered Arctic Ocean for 30 years. The immense effort of the past 52 expeditions has paid off: 40,000 km of measurement
95Focus ice DriftStory 10
How alike the two pictures are: as AWI sea-ice physicist Dr Thomas Krumpen flies over
the scattered remains of what was once the MOSAiC floe and many of its neighbouring
f
After a two-year break, this year experts from the Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research (AWI) were able to return to Station Nord in northeast Greenland, to resume
CryoSat-2, a radar altimeter satellite of the European Space Agency (ESA), had its eighth birthday on April 8, 2018. Observations from CryoSat-2 add vital information on sea ice thickness to other sat
The standard unit used for the sea-ice volume is thousands of cubic kilometres, and offers a better measure of the state of Arctic sea ice than the extent, since the volume includes the thickness of t
On 16 May, RV Polarstern left the MOSAiC floe, which an international team of experts has been researching since last October, to pick up the crew for the next leg of the expedition off the coast of S
Sea ice is one of the most important components in the Arctic climate system. It is in a state of constant interchange with the atmosphere and the ocean, and its physical characteristics, especially i
Background Satellite altimeters measure how much the sea-ice surface floats above the water level. This parameter is called freeboard and it is further converted into sea-ice thickness. This calculati
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