After starting the year with record lows in January and February, Arctic sea ice extent ended tied with 2008 for the sixth lowest average September extent in the satellite record.
Sea Ice Today
Analyses and daily images of sea ice conditions
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Arctic
On September 19 and 23, Arctic sea ice appeared to have reached its seasonal minimum extent for the year, at 4.59 million square kilometers (1.77 million square miles).
Arctic
The seasonal minimum of Arctic sea ice extent is imminent; extent at the minimum is likely to be the sixth lowest in the satellite record, tied with 2008.
Arctic
With the waning of Arctic summer, the seasonal decrease in sea ice extent has slowed. At this time of the year, the extent is the highest it has been since 2014.
Arctic
After declining rapidly through July, sea ice extent decline slowed during the first two weeks of August. A new record September minimum is highly unlikely.
Antarctica
Arctic
Arctic sea ice extent declined rapidly the latter half of July, despite the persistence of low sea level pressure over the Arctic Ocean and generally cool conditions.
Arctic
Sea ice declined at a near average rate through the first half of July as low sea level pressure dominated the Arctic Ocean. Wind patterns caused smoke from Siberian forest fires to sweep over the ice.
Antarctica
Arctic
Arctic sea ice extent declined at a slightly slower-than average pace in June. Despite the slow loss, warm conditions and winds from the south developed a large area of open water in the Laptev Sea.
Antarctica
Arctic
Arctic sea ice extent for May 2018 was the second lowest in the satellite record.
Arctic
Sea ice extent in the Bering Sea remains at record low levels for this time of year. Total ice extent over the Arctic Ocean also remains low.
Arctic
The 2018 winter sea ice maximum has passed, and the melt season has begun.
Antarctica
Arctic
Arctic sea ice appears to have reached its annual maximum extent on March 17. This is the second lowest Arctic maximum in the 39-year satellite record.
Antarctica
Arctic
As temperatures at the North Pole approached the melting point at the end of February, Arctic sea ice extent tracked at record low levels for this time of year.
Arctic
January of 2018 began and ended with satellite-era record lows in Arctic sea ice extent, resulting in a new record low for the month. Combined with low ice extent in the Antarctic, global sea ice extent is also at a record low.
Antarctica
Arctic
Arctic sea ice extent in December 2017 was below average in both the far northern Atlantic and the Bering Sea, and notably high temperatures prevailed over most of the Arctic, especially over Central Alaska. We look back at the year’s events, and examine Arctic sea ice trends since 1850 based on a new compilation of data from maps, ship reports, and other records.
Antarctica
Arctic
November 2017 will be remembered not for total Arctic ice extent, which was the third lowest recorded over the period of satellite observations, but for the record low extent in the Chukchi Sea.
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Arctic
Rapid expansion of the Arctic sea ice cover is the norm for October as solar input dwindles and the remaining heat in the upper ocean is released upwards, warming the lower atmosphere and escaping to space.
Antarctica
Arctic
After setting a record low seasonal maximum in early March, Arctic sea ice extent continued to track low through July. However, the rate of ice loss slowed in August and September.
Antarctica
Arctic
On September 13, Arctic sea ice appears to have reached its seasonal minimum extent of 4.64 million square kilometers (1.79 million square miles), the eighth lowest in the 38-year satellite record.
Arctic
Average sea ice extent for August 2017 ended up third lowest in the satellite record. Ice loss rates through August were variable, but slower overall than in recent years.