Figure : copy_of_yearlyseaiceage_1984_still-0000

Diminishing Arctic Sea Ice

Figure 2.7

U.S. Global Change Research Program
David J. Dokken

This figure appears in chapter 2 of the Impacts, Risks, and Adaptation in the United States: The Fourth National Climate Assessment, Volume II report.

As the Arctic warms, sea ice is shrinking and becoming thinner and younger. The video in the top panel shows how the summer minimum ice extent and average age, measured in September of each year, changed from 1984 to 2016. The bottom panel shows September sea ice extent each year from 1979 (when satellite observations began) to 2016. Sea ice extent has decreased at a rate of 13.3% ± 2.6% per decade. The gray line is the 1979–2016 average. Source: adapted from Taylor et al. 2017.61d6757d-3f7a-4e90-add7-b03de796c6c4

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This figure was created on October 18, 2017.

This figure was submitted on December 03, 2018.

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