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The annual development of the sea-ice extent is one of the most important parameters for describing the seasonal progression of sea-ice development. It is particularly relevant when combined and compa
This year, sea-ice development in the Antarctic is progressing extremely slowly and, after May, once again reached a record-low monthly sea-ice extent in June. At 11.23 million km², the monthly mean s
Not until the end of the month did the sea-ice extent substantially decline, dropping below two standard deviations from the average for the period 1981 – 2010. At the same time, the summer solstice w
The sea ice of the Arctic and Antarctic is a unique habitat for a host of organisms, which can be found on its surface, in the brine channels that permeate it, or on its underside, in the boundary lay
In contrast, the pack ice is now steadily growing in the Antarctic. This year, observations of the sea-ice extent development in both hemispheres reveal a trend clearly below the long-term average. Th
In addition to ice extent and thickness, ice age is an important parameter for the characterisation and formation of sea ice! After all, as sea ice ages, physical characteristics like thickness, salin
On 4 March 2020, the Arctic sea-ice extent reached its winter maximum at 14.98 million km² and has been steadily declining ever since. The value is now hovering near the bot-tom limit of two standard
Particularly in the Bering Sea, but also in the Sea of Okhotsk and eastern Barents Sea, the amount of sea ice was below the long-term average for 2003 – 2014. In contrast, the ice margin was above the
While the summer minimum was reached in the Antarctic on 19 February 2020 (at 2.68 million km²), in the Arctic the extent has been growing steadily since the end of February, and hasn’t yet reached it
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 mo
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