Fig. 4: Seasonal cycles of the Eastern Siberian Shelf Current.
From: Sea surface height variability shapes Siberian Arctic Ocean circulation and Pacific Water inflow
a Seasonal variations of sea surface salinity (SSS; blue; axis inverted), sea surface height (SSH; black), and along-shore surface current velocity (red) from ORAS5, averaged along 73–75°N across section A–A′ (Fig. 3). Grey bars indicate Lena River discharge (0–0.1 Sv). b Along-shore surface current decomposed into geostrophic (Ugeo; red) and wind-driven Ekman (UEkman; blue) components, with the total current shown in black, averaged along 73–75°N. c, d Monthly mean wind vectors (black arrows) and surface current vectors (red arrows) Eastern Siberian Shelf Current and the Siberian Coastal Current, respectively. e Seasonal variations of the cross-shelf SSH gradient (dSSH/dy; blue; axis inverted), the halosteric SSH gradient (dHalo/dy; black; axis inverted), and the along-shore wind component (red), averaged along 73–75°N. f Seasonal variability of the Siberian Coastal Current, illustrated by the cross-shore SSH gradient (dSSH/dy; blue; axis inverted), along-shore surface current (black), and cross-shore wind component (red), averaged along 71–72°N.
