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Arctic Sea Ice Extent

Arctic Sea Ice Extent: October 14, 2021

October 14, 2021: Over the past week the sea ice has now increased from last week by a rate of 9.58% from the level on 10/07/2021 of 5.719 M km2 to 6.325 M km2 for this week.

Arctic Sea Ice Extent Archive

Arctic Sea Ice Extent: October 7, 2021

October 7, 2021: Over the past week the sea ice has now increased from last week by a rate of 8.59% from the level on 09/30/2021 of 5.228 M km2 to 5.719 M km2 for this week.

Arctic Sea Ice Extent: September 30, 2021

September 30, 2021: Over the past week the sea ice has now increased from last week by a rate of 6.64% from the level on 09/23/2021 of 4.881 M km2 to 5.228 M km2 for this week.

Arctic Sea Ice Extent: September 23, 2021

September 23, 2021: Over the past week the sea ice has now increased from last week by a rate of 2.89% from the level on 09/16/2021 of 4.740 M km2 to 4.881 M km2 for this week. This marks the end of the sea ice loss season, with a minimum value of 4.740 M km2 for 2021.

Arctic Sea Ice Extent: September 16, 2021

September 16, 2021: Over the past week the sea ice has now decreased from last week by a much lower rate of 1.50% from the level on 09/09/2021 of 4.812 M km2 to 4.740 M km2 for this week.  The rate of loss at this time is about even with that in 2017, however, and well above the all-time low season of 2012. It looks like we are very close to the end of the ice loss season and a record for this season is not in the cards.  In fact, the sea ice extent at this time of year is probably the highest it has been over the past few years.

Arctic Sea Ice Extent: September 9, 2021

September 9, 2021: Over the past week the sea ice has now decreased from last week by a slightly lower rate of 4.52% from the level on 09/02/2021 of 5.040 M km2 to 4.812 M km2 for this week.  The rate of loss at this time is about even with that in 2017, however, and well above the all-time low season of 2012; and so with about 1-2 weeks left in the ice loss season, a record for this season seems unlikely at this point.  In fact, the sea ice extent at this time of year is probably the highest it has been over the past few years.

Arctic Sea Ice Extent: September 2, 2021

September 2, 2021: Over the past week the sea ice has now decreased from last week by a slightly greater rate of 5.64% from the level on 08/26/2021 of 5.341 M km2 to 5.040 M km2 for this week.  The rate of loss at this time is about even with that in 2018, however, and well above the all-time low season of 2012; and so with about 2-3 weeks left in the ice loss season, a record for this season seems unlikely at this point.  In fact, the sea ice extent at this time of year is probably the highest it has been over the past few years.