EGU2020-20548, updated on 09 Jan 2024
EGU General Assembly 2020
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Impact of the current feedback on the representation of tropical cyclones in coupled models

Lisa Maillard1, Julien Boucharel1,2, Lionel Renault1,3, and Thomas Arsouze3
Lisa Maillard et al.
  • 1LEGOS, University of Toulouse, CNRS ,IRD, CNES, UPS, Toulouse, France
  • 2Department of Atmospheric Sciences, SOEST,University of Hawaii at Manoa, Honolulu, Hawaii, USA
  • 3Barcelona Supercomputing Center (BSC), Barcelona, Spain

Tropical Cyclones (TCs) are among the most destructive natural phenomena on Earth and severely impact nearly a billion people. Coupled models have become a necessary tool to improve our knowledge on those natural hazards. Improving their ability to statistically represent TCs is of prior importance. In the present study, we investigate the impact of the mechanical interaction between the surface oceanic current and the atmosphere (i.e., the Current FeedBack, CFB) on the statistic of TCs in different basins. We perform sensitivity experiments using the EC-Earth model in its High-Resolution version (1/12˚), by switching on and off CFB. As CFB has been shown to strongly improve the realism of the oceanic circulation at both large scale and mesoscale, we expect an improvement, i.e., a better realism, of the statistical TCs representation when CFB is taken into account in the model. Improving coupled models will help design forecast schemes with lead times longer than those currently provided by operational forecasts centers.

How to cite: Maillard, L., Boucharel, J., Renault, L., and Arsouze, T.: Impact of the current feedback on the representation of tropical cyclones in coupled models, EGU General Assembly 2020, Online, 4–8 May 2020, EGU2020-20548,, 2020.


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