Joint Seminar: Equatorial Deep Jets in the Atlantic Ocean: Scales and energy transfer mechanisms

In the deep equatorial oceans, the circulation is dominated by strong alternating zonal current systems. One of these is called Equatorial Deep Jets (EDJ): It consists of vertically stacked eastward and westward current bands that are located directly on the equator. The EDJ show downward phase propagation, with an interannual time scale that depends on the width of the ocean basin. In the Atlantic, they have been suggested to influence both the deep ocean tracer distribution and surface climate variables, thus representing a possible source of long-term predictability. However, observations of the EDJ have been relatively scarce, their scales have been poorly defined and their generation and maintenance mechanisms not entirely understood. In the seminar, I will present some of my doctoral research on the Atlantic EDJ, including new insights into their maintenance against dissipation through energy transfer from intraseasonal waves, as well as evidence for the acceleration of the time mean equatorial flow field through energy transfer from the EDJ.




15:15 Uhr


Virtual Seminar


Swantje Bastin, MPI-M


Diego Jiménez-de-la-Cuesta Otero
Shih-Wei Fang

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