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Furthermore, current research comprises and establishes extensive sets of multi-century historical records of arctic and subarctic sea ice and uses, among others high-resolution paleo-proxy sea-ice records. [1] The arctic sea ice is a dynamic climate-system component and is linked to the Atlantic multidecadal variability and the historical ...
Currently, 28% of Arctic basin sea ice is multi-year ice, [2] thicker than seasonal ice: up to 3–4 m (9.8–13.1 ft) thick over large areas, with ridges up to 20 m (65.6 ft) thick. Besides the regular seasonal cycle there has been an underlying trend of declining sea ice in the Arctic in recent decades as well.
Sea ice freeboard is the difference between the height of the surface of sea ice and the water in open leads. Since 85–95% of snow-free sea ice is usually located below the waterline, the computation of the thickness is fairly simple; [3] however, accurate measurement of ice freeboard is hindered by several factors including snow cover, and ...
The post is wrong about Arctic sea ice and climate change. On Dec. 21, 2024, the Antarctic sea ice extent was higher than on Dec. 21, 2016, but the Arctic sea ice extent was lower on that date in ...
Variation of Arctic sea ice from 1984 to 2019. Younger ice (first-year ice) is shown in darker shades, while older ice (four-year or older) is shown in white. Housed in the western part of the Arctic Ocean is the Beaufort Gyre, whose growing reservoir of freshwater is shrouded in mystery. In recent years, this increasing freshwater content (FWC ...
English: Plot of arctic sea ice extent development between 1979 and 2023 in monthly mean values. For the determination of the "area" value, every pixel with a sea ice concentration > .15 is taken. The pixel area is multiplied with the concentration value derived from the passive infrared signal.
The Arctic has already lost about half of its sea ice, compared to the 1980s at the end of the summer. It is known that more warming has delayed ice formation, and resulted in thinner sea ice growth.
The National Snow and Ice Data Center (NSIDC) is a United States information and referral center in support of polar and cryospheric research.NSIDC archives and distributes digital and analog snow and ice data and also maintains information about snow cover, avalanches, glaciers, ice sheets, freshwater ice, sea ice, ground ice, permafrost, atmospheric ice, paleoglaciology, and ice cores.