Figure 7
Sea ice, ocean, and atmosphere variations over the northeastern Chukchi Sea during the R/V Mirai cruise in November 2018. (a) Normalized Radar Cross Section (NRCS) from Synthetic Aperture Radar (SAR) on Sentinel-1 on 17 November. The relatively large NRCS area near and north of the 100 m isobath (magenta line) indicates increased radar backscattering by the presence of the sea ice. The magenta line shows the 100 m isobath to indicate the shelf edge. The colored dots show seawater temperature at 5 m. The red and blue arrows show in-situ currents averaged over 8–32 m below the sea surface and wind vectors at 25 m above sea level, respectively. The seawater temperature and wind data are the spatial averages of the results during the cruise transect (Supplementary Figs. 5b and 6a). The data from the 24 h with the SAR measurement occurring at the central time are used. (b) Salinity profiles were obtained at the yellow outlined points shown in (a) on 17–18 November. (c, d) are the same as (a, b), respectively, but for 20–21 November. The maps are created by the MATLAB_R2020a with the mapping package M_MAP v1.4 h (http://www.eoas.ubc.ca/~rich/map.html).
