Geoscientific Model Development
Geoscientific Model Development
GMD
Articles | Volume 19, issue 17
Articles | Volume 19, issue 17
https://doi.org/10.5194/gmd-19-8427-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/gmd-19-8427-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 19, issue 17
Development and technical paper
 | 
10 Sep 2026
Development and technical paper |  | 10 Sep 2026

Development of a high-resolution coupled SHiELD-MOM6-LM4 model – Part 2: Model overview, coupling technique, and evaluation of hydrological extremes during Hurricane Helene

Joseph Mouallem, Sergey Malyshev, Zhihong Tan, Elena Shevliakova, Kun Gao, Lucas Harris, Rusty Benson, William Cooke, Niki Zadeh, and Lauren Chilutti

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Short summary
We integrate GFDL's (Geophysical Fluid Dynamics Laboratory) land model in the high resolution global atmospheric model SHiELD (System for High-resolution modeling for Earth-to-Local Domains), unlocking new capabilities in simulating new suite of land-atmosphere conditions and extreme hydrological processes such as flooding. A single global simulation captures Hurricane Helene's 2024 landfall, including soil saturation, runoff generation, and river flooding in Western North Carolina, while simultaneously capturing an independent extreme rainfall and flooding event in Nepal.
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