Implementation of predicted rime mass in the bin microphysics scheme DESCAM 3D: evaluation for an idealized squall line system and a heavy snowfall event during ICE-POP 2018

Grzegorczyk, Pierre; Wobrock, Wolfram; Canzi, Antoine; Tridon, Frédéric; Park, Sun-Young; Lee, Gyuwon; Kim, Kwonil; Lim, Kyo-Sun; Planche, Céline

doi:10.5194/gmd-19-8025-2026

Articles | Volume 19, issue 17

https://doi.org/10.5194/gmd-19-8025-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/gmd-19-8025-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 19, issue 17

Model evaluation paper

|

01 Sep 2026

Model evaluation paper |

| 01 Sep 2026

Implementation of predicted rime mass in the bin microphysics scheme DESCAM 3D: evaluation for an idealized squall line system and a heavy snowfall event during ICE-POP 2018

Pierre Grzegorczyk, Wolfram Wobrock, Antoine Canzi, Frédéric Tridon, Sun-Young Park, Gyuwon Lee, Kwonil Kim, Kyo-Sun Lim, and Céline Planche

Supplement

https://doi.org/10.5194/gmd-19-8025-2026-supplement

Data sets

Ground based observations of ICE-POP 2018 campaign used for DESCAM-3D P. Grzegorczyk et al. https://doi.org/10.5281/zenodo.17278661

Radar and ground-level measurements of precipitation during the ICE-POP 2018 campaign in South-Korea J. Gehring et al. https://doi.org/10.1594/PANGAEA.918315

Model code and software

DESCAM-3D model for ICE-POP 2018 P. Grzegorczyk et al. https://doi.org/10.5281/ZENODO.17854170

Idealized squall line simulation with DESCAM-3D P. Grzegorczyk et al. https://doi.org/10.5281/ZENODO.18526032

Short summary

This study evaluates the implementation of predicted rime mass distribution a bin microphysics scheme. Based on the ‘fill-in’ concept, the model allows a smooth transition between unrimed and graupel ice particles. The implementation is tested for an idealized squall-line system and a heavy snowfall event observed by ground-based instruments in the Korean Peninsula. The new model version gives a better agreement with the observations with significant changes for precipitation.