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

Fig. 1. Riverine heat release causes anomalous sea ice thickness and volume.

Fig. 1

(A) The anomaly of annual mean sea ice thickness (centimeters) caused by riverine heat, Qrh from 1980 to 2015. (B) The proportion (%) of the ice thickness reduction shown in (A) relative to annual mean sea ice thickness. (C) The mean Qrh (×1018 J) produced by the six largest river drainages and the annual anomalous sea ice volume (AIV, cubic kilometer, positive indicates reduction) caused by Qrh from 1980 to 2015 for the six individual shelf regions. In (A) and (B), only values with a mean sea ice thickness anomaly exceeding 0.5 cm are shown. The colored areas in (C) represent the six targeted shelf regions in this study, including the major river drainage areas producing Qrh. The circled numbers in (C) represent ① Barents Sea, ② Kara Sea (Ob and Yenisey Rivers), ③ Laptev Sea (Lena River), ④ Eastern Siberian Sea (Kolyma River), ⑤ Beaufort Sea (Mackenzie River), and ⑥ Canadian Archipelago. Thin black contours in (A) and (B) show the 200-m isobath.