Extended Data Fig. 4: Spatial trend patterns of surface zonal wind velocity and mid-tropospheric vertical velocity.
From: Walker circulation strengthening driven by sea surface temperature changes outside the tropics
(a,c,e) The horizontal distribution of 10 m-level zonal wind velocity (u10) trend for 1980-2020 in (a) ERA5 and CM2.1 ensemble means of (c) HIST and XTOGA15. (b,d,f) As in (a,c,e), but for vertical velocity anomalies at 500 hPa (ω500) (positive if downward). The green boxes in (a) and (b) are the reference region for the u10 and ω500 Pacific Walker circulation indices.
