Fig. 6: Simulated ocean velocity and tracer distributions to verify the spreading of the lowest oxygen saturation water from the shelf-slope north of the East Siberian Sea.
From: Atlantic-origin water extension into the Pacific Arctic induced an anomalous biogeochemical event
a Simulated ocean velocity and tracer concentration averaged 100–200 m in December 2017. The simulated tracer distribution represents the spreading of the lowest oxygen saturation water from the shelf-slope north of the East Siberian Sea (ESS), where the tracer concentration value is fixed to 1 (see Methods). The yellow line from the top of the Chukchi Plateau (CP) to its western slope corresponds to the horizontal axis range in b–d. b Time series of tracer concentration of water passing through the yellow line in a averaged 100–200 m. c, d Vertical sections of northward velocity (colors) and salinity (contours) for the periods of 2017–2020 and 2013–2016, respectively, along the yellow line in a. Source data are provided as a Source Data file.
