Geoscientific Model Development
Geoscientific Model Development
GMD
Articles | Volume 18, issue 17
Articles | Volume 18, issue 17
https://doi.org/10.5194/gmd-18-5435-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/gmd-18-5435-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 18, issue 17
Model evaluation paper
 | 
01 Sep 2025
Model evaluation paper |  | 01 Sep 2025

Impact of horizontal resolution and model time step on European precipitation extremes in the OpenIFS 43r3 atmospheric model

Yingxue Liu, Joakim Kjellsson, Abhishek Savita, and Wonsun Park

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The impact of horizontal resolution and model time step on extreme precipitation over Europe is examined in OpenIFS. We find that the biases are reduced with higher horizontal resolution but not with a shorter time step. The large-scale precipitation is sensitive to the horizontal resolution and time step; however, the convective precipitation is sensitive to the model time step. Higher horizontal resolution is more important for extreme precipitation simulation than a shorter time step.
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