Extended Data Fig. 8: Streamwise mean of upper 2,000 m baroclinic transport change and zonal velocity change.
From: Ocean warming and accelerating Southern Ocean zonal flow
(a) upper 2,000 m baroclinic transport change and (b) zonal geostrophic velocity change between 1998–2018 and 1940–1960 from IAP data. The ‘SAF’ is defined as the observed 1993–2019 mean sea surface height passing through the Drake Passage at the point 67.5˚W, 57.5˚S. (c)-(d), same with (a)-(b), but the simulated velocity/transport change and the ‘SAF’ are based on CMIP6 ensemble mean. Gray curves in (b) and (d) are the streamwise mean climatological zonal velocity.
