EGU24-15249, updated on 09 Mar 2024
EGU General Assembly 2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Sensitivity analysis of hurricane Paulette with convection-permitting ICON simulations

Fabian Senf and Roxana Cremer
Fabian Senf and Roxana Cremer
  • Leibniz Institute for Tropospheric Research, Modeling of Atmospheric Processes, Leipzig, Germany (

Tropical cyclones are impressive phenomena of tropical meteorology and form spatially highly organised structures. To shed more light on microphysical sensitivities of hurricanes, we present the initial outcomes of a sensitivity analysis of hurricane Paulette simulated with the German weather and climate model ICON. Paulette occurred in the North-Atlantic basin in September 2020 and was simulated with variable settings for model parameterisations and horizontal grid spacings down to hectometre. The study especially explores the microphysical details of the simulated hurricane case. In our examination, we find interesting sensitivities to Cloud Condensation Nuclei (CCN) type and concentration and to vertical resolution. Changes in the top-of-the-atmosphere radiation fluxes are presented in detail. Insights gained from this analysis contribute to the broader understanding of model performance in simulating microphysical processes such as the formation of cloud ice and precipitation.

How to cite: Senf, F. and Cremer, R.: Sensitivity analysis of hurricane Paulette with convection-permitting ICON simulations, EGU General Assembly 2024, Vienna, Austria, 14–19 Apr 2024, EGU24-15249,, 2024.