Extended Data Fig. 6: Composite comparison between two groups.
From: Present-day North Atlantic salinity constrains future warming of the Northern Hemisphere
a–c, Differences between two groups (high sea surface salinity (SSS) minus low SSS in the NA subpolar region) in the present-day climate state (shading) of a, meridional streamfuction, b, mixed layer depth, c, zonal mean dissolved inorganic carbon. The two groups were divided into 9 CMIP6 ESMs based on the present-day SSS in the NA subpolar region. Contours illustrate the multi-model ensemble mean of 18 CMIP6 ESMs. Stipples indicate regions that are statistically significant at 99% confidence level by Student’s t-test. Green box indicates NA subpolar region. d, Inter-model difference of SSS over the NA subpolar region in the present-day and cumulative carbon uptake in the NA for the present-day (bottom) and future climate (top). Light colors illustrate each ensemble and dark colors multi-model ensemble mean of each group. e, Difference between two groups in future changes (shading) of surface temperature.
