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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.
Younger ice (first-year ice) is shown in darker shades, while older ice (four-year or older) is shown in white. This visual shows the Arctic sea ice change and the corresponding absorbed solar radiation change during June, July, and August from 2000 through 2014. The Arctic ice pack is the sea ice cover of the Arctic Ocean and its vicinity. The ...
[54]: 1249 In September 2020, the US National Snow and Ice Data Center reported that the Arctic sea ice in 2020 had melted to an extent of 3.74 million km 2, its second-smallest extent since records began in 1979. [55] Earth lost 28 trillion tonnes of ice between 1994 and 2017, with Arctic sea ice accounting for 7.6 trillion tonnes of this loss.
“Meanwhile, the presence of arctic air farther north will support mixed precipitation, sleet and ice as the moisture reaches into Oklahoma and Kansas tonight,” the Weather Prediction Center said.
Canada's remote Arctic region, home to around 86,000 people, is facing the complete closure of all the diamond mines by 2030 and is looking for ways to keep mining alive.
As such, the loss of Arctic ice during the summer is not a tipping point for as long as the Arctic winter remains cool enough to enable the formation of new Arctic sea ice. [42] [43] However, if the higher levels of warming prevent the formation of new Arctic ice even during winter, then this change may become irreversible. Consequently, Arctic ...
The Schmidt Ice Cap is an Arctic ice cap very near the limit of permanent sea ice, so as to be indistinguishable from the sea in winter, spring, and late fall. It covers almost all (~75-85%) of Schmidt Island , a Russian Arctic island above the 80th parallel north .
Historically, only a narrow pass up to 100 km (62 mi) opened in August–September near its shores, but recently due to climate change in the Arctic the ice-free area in late summer has greatly enlarged. Until recently, the Beaufort Sea was known as an important reservoir for the replenishment of Arctic sea ice. [5]