The South Atlantic Meridional Overturning Circulation and Mesoscale Eddies in the First GO‐SHIP Section at 34.5°S

The variability of the Atlantic meridional overturning circulation (AMOC) has considerable impacts on global climate system. Past studies have shown that changes in South control stability AMOC and drive an important part its variability. That is why significant resources been invested a (S)AMOC observing In January 2017, RV Maria S. Merian conducted first GO-SHIP hydrographic transect along SAMOC-Basin Wide Array (SAMBA) line at 34.5°S Atlantic. This paper presents estimates volume, freshwater (MFT), heat (MHT) transports through using slow varying geostrophic density field direct velocity observations. An upper abyssal cell are identified with strength 15.64 ± 1.39 Sv 2.4 1.6 Sv, respectively. net northward MHT 0.27 0.10 PW, increasing by 0.12 PW when we remove observed mesoscale eddies climatology derived from Argo floats data set. We attribute this change to anomalous predominance cold core during cruise period. highest velocities western boundary, within Brazil Deep Western Boundary currents. These currents appear as continuous deep jet located 150 km off slope squeezed between two cyclonic eddies. zonal water masses properties denote imprint exchange pathways both Southern Indian oceans.