Optimizing physical scheme selection in RegCM5 for improved air–sea fluxes over Southeast Asia

Desmet, Quentin; Herrmann, Marine; Ngo-Duc, Thanh

doi:10.5194/gmd-18-8855-2025

Articles | Volume 18, issue 22

https://doi.org/10.5194/gmd-18-8855-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/gmd-18-8855-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 18, issue 22

Model evaluation paper

|

21 Nov 2025

Model evaluation paper |

| 21 Nov 2025

Optimizing physical scheme selection in RegCM5 for improved air–sea fluxes over Southeast Asia

Quentin Desmet, Marine Herrmann, and Thanh Ngo-Duc

Model code and software

RegCM5 code for manuscript "Optimizing physical scheme selection in RegCM5 for improved air–sea fluxes over Southeast Asia" ICTP https://doi.org/10.5281/zenodo.15125815

``scoringtree'' Python package for manuscript ``Optimizing physical scheme selection in RegCM5 for improved air-sea fluxes over Southeast Asia'' Quentin Desmet https://doi.org/10.5281/zenodo.15356967

Scripts and minimal data for manuscript "Optimizing physical scheme selection in RegCM5 for improved air–sea fluxes over Southeast Asia" Quentin Desmet https://doi.org/10.5281/zenodo.15359231

Short summary

Climate model performance at the air–sea interface has long been overlooked across the Southeast Asian seas. We thus assess various regional model physics configurations in this regard. Finding one optimal configuration is challenging: reliable rainfall rarely coincides with correct radiative heating. Simulations of rainfall however yield more dissensus, suggesting that this variable should be prioritized, for which the best results are obtained with the cumulus convection scheme of Tiedtke.