Geoscientific Model Development
Geoscientific Model Development
GMD
Articles | Volume 19, issue 17
Articles | Volume 19, issue 17
https://doi.org/10.5194/gmd-19-8149-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/gmd-19-8149-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 19, issue 17
Development and technical paper
 | 
02 Sep 2026
Development and technical paper |  | 02 Sep 2026

Implementation of the Generalized Double-Moment scaling Normalization method for raindrop size distribution in a WRF 4.3.1 bulk-type cloud microphysics scheme: a case study over the Korean Peninsula

Joonghyun Jo, Kyo Sun Lim, Sun-Young Park, Juhee Kwon, Wonbae Bang, HyangSuk Park, Jae-Young Byon, and Gyuwon Lee

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Short summary
This study improves rainfall simulation by applying the Generalized Double-moment scaling Normalization (GDMN) method to the rain Drop Size Distribution (DSD) in the Weather Research and Forecasting Double-Moment 6-class (WDM6) microphysics scheme. Using observed raindrop data, GDMN better represents variations in raindrop sizes. The modified WDM6 improves precipitation patterns, radar reflectivity, and storm movement, with benefits also demonstrated in a month-long East Asian simulation.
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