The waning of Arctic summer
Arctic sea ice continued the fast retreat that was observed in July through August 10, followed by a brief slowdown, only to pick up pace again. During the first half of August, the ice primarily...
View ArticleThe chill is gone
Arctic sea ice cover retreated rapidly in July 2024, pushing the daily ice extent at the end of the month to the third lowest in the 46-year satellite record. Extensive low-concentration areas of sea...
View ArticlePeak of the melt season
July is the warmest month in the Arctic and hence also the month of peak sea ice loss. As of the middle of July 2024, extent is declining at an above average pace. Sea is mostly gone in Hudson Bay, and...
View ArticleArctic ice thinner near Canada; thicker elsewhere
The Arctic sea ice cover in June 2024 retreated at a below average pace, leading to a larger total sea ice extent for the month than in recent years. Many areas of open water have developed along the...
View ArticleAn early Hudson Bay opening
The sea ice cover in May 2024 was marked by an unusually early opening of eastern Hudson Bay. Overall, the rate of decline in the Arctic was near average for the month. In the Antarctic, the seasonal...
View ArticleWestern Arctic leads the way on springtime decline
April sea ice loss in the Arctic proceeded at a near-average rate overall, with the majority of ice losses in the Bering Sea and Sea of Okhotsk. In the Antarctic, sea ice grew faster than average,...
View ArticleArctic sea ice: Walking on sunshine
Following the 2024 maximum sea ice extent on March 14, Arctic ice extent has declined slowly such that 2024 March average is the fifteenth lowest in the passive microwave satellite record. The...
View ArticleArctic sea ice reaches a below-average maximum
Arctic sea ice has likely reached its maximum extent for the year, at 15.01 million square kilometers (5.80 million square miles) on March 14. The 2024 maximum is the fourteenth lowest in the 46-year...
View ArticleLeaping toward spring
During February, Arctic sea ice extent increased along the lower 10 percent interdecile value, with the average monthly extent tied for fifteenth lowest in the satellite record. Temperatures were above...
View ArticleAntarctic sea ice extent hits a third low in a row
On February 20, Antarctic sea ice likely reached its minimum extent of 1.99 million square kilometers (768,000 square miles), tying for second lowest extent in the 1979 to 2024 satellite record. This...
View ArticleNothing Swift about January’s Arctic sea ice
Arctic sea ice growth was slower than average through most of the month, but with extent slightly declining towards the end of the month. Antarctic sea ice extent returned to near-record daily lows...
View ArticleFast December expansion
The end of 2023 had above average sea ice growth, bringing the daily extent within the interdecile range, the range spanning 90 percent of past sea ice extents for the date. Rapid expansion of ice in...
View ArticleA brief winter pause
While autumn sea ice growth is in full swing, brief pauses are not unusual. Starting November 22, the ice growth stalled almost completely for five days as a series of storms guided an atmospheric...
View ArticleThe long Arctic winter sets in
As the long Arctic winter sets in, sea ice extent has increased at a faster than average pace. By the end of October, the ice cover had reached the Siberian coast, while open water persisted along the...
View ArticleThe Sun sets on the Arctic melt season
A few days after the annual Arctic sea ice minimum extent was reached on September 19, the sun set at the North Pole, aiding sea ice growth. Arctic sea ice extent has grown at a fairly slow pace,...
View ArticleAntarctic sets a record low maximum by wide margin
On September 10, Antarctic sea ice likely reached its annual maximum extent of 16.96 million square kilometers (6.55 million square miles). This is the lowest sea ice maximum in the 1979 to 2023 sea...
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