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The Arctic ice pack is the sea ice cover of the Arctic Ocean and its vicinity. The Arctic ice pack undergoes a regular seasonal cycle in which ice melts in spring and summer, reaches a minimum around mid-September, then increases during fall and winter. Summer ice cover in the Arctic is about 50% of winter cover. [1]
The Arctic Ocean is the mass of water positioned approximately above latitude 65° N. Arctic Sea Ice refers to the area of the Arctic Ocean covered by ice. The Arctic sea ice minimum is the day in a given year when Arctic sea ice reaches its smallest extent, occurring at the end of the summer melting season, normally during September.
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.
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.
For now, at least, the north pole is covered in sea ice 365 days per year. If C02 emissions are reduced considerably moving forward, ice will remain in the Arctic over most summer months.
It is a major pathway for sea ice to leave the Arctic. It is estimated that more than 90% of the Arctic Sea Ice exported from the Arctic takes place within the East Greenland Current. [2] The volume of ice exported on an annual scale is a strong function of multiple atmospheric variables (wind, temperature, etc.) and oceanic variables and dynamics.
Major winter storm to bring heavy snow and ice from Plains to mid-Atlantic as arctic cold temperatures will set in through mid-January. Kate Murphy. January 3, 2025 at 4:42 PM.
Less snowfall and climate warming are permanently melting great chunks of ice in Greenland. Scientists expect it to raise the sea level by at least 10.6 inches.