Geoscientific Model Development
Geoscientific Model Development
GMD
Articles | Volume 19, issue 11
Articles | Volume 19, issue 11
https://doi.org/10.5194/gmd-19-5207-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/gmd-19-5207-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 19, issue 11
Development and technical paper
 | 
16 Jun 2026
Development and technical paper |  | 16 Jun 2026

Evaluating modifications to Tiedtke cumulus parameterization for improving summer precipitation forecasts in the nested grid of Taiwan Global Forecast System (TGFS v1.1)

Chang-Hung Lin, Guo-Yuan Lien, and Ling-Feng Hsiao

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Short summary
This study presents a series of modifications to the Tiedtke convection scheme, aiming to improve summer rainfall predictions in the 4.8-km-resolution nested grid of the Taiwan Global Forecast System (TGFS). The modifications improve the spatial distribution of rainfall and reduce the heavy rainfall bias in five-day forecast, as demonstrated by case studies and evaluations over a two-month period.
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