Fig. 1: Sea-ice concentration trend in the Arctic Ocean and core locations in the Lincoln Sea.
From: Seasonal sea-ice in the Arctic’s last ice area during the Early Holocene

a Map of the Arctic Ocean including the annual sea-ice concentration trend from 1979 to 201894 (and references therein) and the major surface circulation features, the Transpolar Drift (TPD) and Beaufort Gyre (BG) (dashed blue arrows). The dashed pink line outlines the region of the last ice area (LIA) that lies within the Arctic Ocean proper. The trend in sea-ice concentration is shown as % per decade, i.e. the decrease/increase of sea-ice concentration per 10-years for the period from 1979 to 2018. b Close-up of the Lincoln Sea (yellow rectangle in a) including locations of core sites Ryder19-12-GC1 (12-GC) and Ryder19-14-GC1 (14-GC).