Fig. 1: Long-term changes in the Walker circulation for 1980–2099 under different emission scenarios.
From: Early emergence and determinants of human-induced Walker circulation weakening
Spatial distribution of linear trends in (a) sea level pressure, (c) vertical velocity at 500 hPa (positive values refer to downward velocity), (e) velocity potential at 200 hPa, and (g) area-averaged vertical velocity over 5°S–5°N under the SSP2-4.5 scenario. Black contours denote the climatological mean from 1980–2014. White slant hatchings denote areas where more than 80% of the models agree in sign of the trends. b, d, f and h are the same as (a), (c), (e), and (g) but under the SSP5-8.5 scenario. Boxes in (a–f) indicate regions used to define the Walker circulation intensity indices and the zonal SST gradient (see Methods).
