The seasonal maximum extent of Arctic sea ice has passed, and with the passing of the vernal equinox, the sun has risen at the north pole. While there are plenty of cold days ahead, the long polar night is over.
Sea Ice Today
Analyses and daily images of sea ice conditions
Analyses
Filter by:
Antarctica
Arctic
The spring decline in Arctic sea ice extent continued at varying rates through the month of April, highlighted by a mid-month pause.
Arctic
Arctic sea ice appears to have reached its maximum extent on March 21, 2021, tying for seventh lowest in the 43-year satellite record.
Antarctica
Arctic
Sea ice extent for February 2021 tracked well below average, but at month’s end was still higher than levels recorded in several recent years. Extent grew at an average pace.
Arctic
Arctic sea ice extent for January 2021 tracked below average, with the monthly average finishing sixth lowest in the satellite record.
Antarctica
Arctic
The Arctic climate was extraordinary in 2020, but the year ended with a less spectacular December.
Antarctica
Arctic
Entering December, which is the start of winter in the Northern Hemisphere, sea ice extent remains far below average, dominated by the lack of ice on both the Pacific and Atlantic sides of the Arctic Ocean.
Antarctica
Arctic
A vast area of the Arctic Ocean remains ice free as November begins, far later in the season than is typical. The monthly average ice extent for October is the lowest in the satellite record.
Antarctica
Arctic
Following the sea ice extent minimum on September 15, 2020, expansion of the ice edge has been most notable in the northern Chukchi and Beaufort Seas. The ice edge along the Laptev Sea continued to retreat farther.
Arctic
On September 15, Arctic sea ice likely reached its annual minimum extent of 3.74 million square kilometers (1.44 million square miles).
Antarctica
Arctic
In the first week of September, sea ice extent took a sharp downward turn, exceeding the pace of decline for any previous year during that period, and placing the 2020 sea ice minimum firmly as second lowest—after 2012—in the 42-year continuo
Antarctica
Arctic
After a period of rapid sea ice loss extending into the last week of August, the rate has slowed with the onset of autumn in the Arctic. A region of low concentration ice persists in the Beaufort Sea.
Arctic
While the Arctic summer is waning, sea ice extent continues to drop. In early August, ice-free pockets began to develop in the Beaufort and Chukchi Seas and expanded steadily through the first half of the month.
Antarctica
Arctic
The fast pace of ice loss observed in the beginning of July continued through the third week of July, after which the ice loss rates slowed dramatically.
Antarctica
Arctic
By July 15, 2020, Arctic sea ice extent was at a record low over the period of satellite observations for this time of year.
Antarctica
Arctic
The Siberian heat wave continued into June with a record high temperature in Verkhoyansk, just north of the Arctic Circle. The heat also affected the Laptev Sea, where ice extent dropped to a record low for this time of year.
Antarctica
Arctic
The pace of sea ice decline in April was near average, while sea ice extent ranked fourth lowest in the satellite record.
Arctic
The seasonal decline of Arctic sea ice extent proceeded at a near-average pace in May. Extent did not approach record lows but remained well below the 1981 to 2010 average.
Antarctica
Arctic
After reaching its annual maximum on March 5, Arctic sea ice extent remained stable for several days before it started clearly declining. Continuing the pattern of this past winter, the Arctic Oscillation was in a persistently positive phase.
Arctic
Arctic sea ice appears to have reached its annual maximum extent on March 5.