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. 2020 Nov 6;6(45):eabc4699. doi: 10.1126/sciadv.abc4699

Fig. 2. Seasonal and interannual variability of riverine heat and anomalous sea ice volume.

Fig. 2

Impact of riverine heat Qrh on Arctic sea ice decay in the six Arctic shelf regions (see Fig. 1c for their definition). (A) Time series of Qrh discharged into the Arctic Ocean, (B) seasonal cycle of Qrh (line); 1980–2015 trends are shown by red and blue bars, (C) satellite summer (15–31 July) sea ice extent, (D) AIV interannual variation, and (E) seasonal cycle with trends (bars) of ice volume reduction caused by Qrh over the six Arctic regions. Gray shading in (A) and (D) denotes uncertainties indicated from model sensitivity experiments (Supplementary Materials). Linear trends in (A), (C), and (D) are shown by dotted lines.