In October, the sea-ice extent in the Arctic was once again below the double standard deviation from the long-term average (Fig. 1). In September 2018 the ice covered an average area of 4.43 million s
Recent findings show that the ability to predict the location of the Arctic sea ice edge varies considerably among sub-seasonal forecasting systems. The best of these forecasting systems outperforms t
65Focus snow DriftStory 07
DriftStory 07
On 30 June 2020, meltwater ponds nearly as long as the
research vessel Polarstern covered the MOSAiC ice floe – though
the snow began melting weeks
35Focus ice thickness DriftStory 03
DriftStory 03
The thickness of the sea ice doesn’t just depend on how much
seawater freezes into ice in winter. Another critical factor is
how frequently th
21Focus ice DriftStory 01
DriftStory 01
Whoever hopes to unlock the mysteries of the sea ice has to first
know its past. Accordingly, sea-ice physicist Thomas Krumpen started
looking for clues
In the course of the past few decades, the sea-ice extent in the Antarctic has been characterised by significant variability – both spatially and chronologically. For example, for the observational pe
21 December marks the astronomical first day of winter in the Northern Hemisphere and first day of winter in the Southern Hemisphere, referred to as the winter solstice and summer solstice, respective
Development in the Arctic The slight upward trend following the Arctic minimum continued in early 2024; although the sea-ice extent was below the mean value for the years 1981 – 2010 at the beginning
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