Large-scale circulation

circulation and dynamics of the South Atlantic and its role in the global overturning circulation

The South Atlantic is the only southern basin where the meridional heat transport is equatorward, not poleward. In 2008, an international collaboration began monitoring the meridional transport at 34.5S in the South Atlantic. Emerging from this time series is the finding that the South Atlantic meridional overturning circulation displays strong intraseasonal variability, likely due to energetic eddies (e.g., Meinen et al., 2018). But the processes that control this variability remain poorly understood and quantified. I am interested in understanding the role of mesoscale eddies in the variability of the MOC.

I am also interested in the role of both large-scale and smal-scale topography in the South Atlantic gyre circulation, with an eye towards the dynamical consequences of misrepresentation of topography in climate models.