What was the average extent of Arctic sea ice in September?

Trends in sea ice extent

What is the general trend in sea ice extent for September?

Arctic sea ice reaches its minimum each September. September Arctic sea ice is now declining at a rate of 13.1 percent per decade, relative to the 1981 to 2010 average. This graph shows the average monthly Arctic sea ice extent each September since 1979, derived from satellite observations.

What was the Arctic sea ice extent in September 2018?

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. Figure 1. Arctic sea ice extent for September 17, 2018 was 4.60 million square kilometers (1.78 million square miles). The orange line shows the 1981 to 2010 average extent for that day.

What was the sea ice extent on September 15, 2020?

Arctic sea ice extent for September 15, 2020 was 3.74 million square kilometers (1.44 million square miles). The orange line shows the 1981 to 2010 average extent for that day. Sea Ice Index data. About the data

How much of the Arctic sea ice has been lost?

In total, 1.70 million square kilometers (656,000 square miles) of ice were lost during August 2019. The linear rate of sea ice decline for August from 1979 to 2019 is 76,200 square kilometers (29,400 square miles) per year, or 10.59 percent per decade relative to the 1981 to 2010 average.

When was the Arctic sea ice minimum in 2012?

Figure 1b. The map above compares the 2012 Arctic sea ice minimum, reached on September 17, with the 2020 Arctic sea ice minimum, reached on September 15. Light blue shading indicates the region where ice occurred in both 2012 and 2020, while white and medium blue areas show ice cover unique to 2012 and to 2020, respectively.