File name: ARC2021_SeaIceMinimum_16Sep2021_graph_1979-2021_2000.jpg
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(top) Sea ice concentration on September 16, 2021, the day of the annual minimum extent. The yellow line shows the 1981–2010 median extent: half of years were smaller and half were larger. (bottom) Yearly Arctic sea ice extent at summer minimum in September and winter maximum in March from 1979–2021. The summer minimum ice extent is decreasing more rapidly than the winter maximum. NOAA Climate.gov map, based on data from the National Snow and Ice Data. Graph adapted from 2021 Arctic Report Card.