Development of the TCWA2 bulk cloud microphysics scheme and its integration with a dual-polarization radar operator for forecasting applications

Tsai, Tzu-Chin; Chen, Jen-Ping; Liu, Zhiquan; Jiang, Siou-Ying; Kong, Rong; Wu, Ying-Jhang; Ban, Junmei; Hsiao, Ling-Feng; Tang, Yu-Shuang; Chang, Pao-Liang; Hong, Jing-Shan

doi:10.5194/gmd-19-6231-2026

Articles | Volume 19, issue 13

https://doi.org/10.5194/gmd-19-6231-2026

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

https://doi.org/10.5194/gmd-19-6231-2026

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

Articles | Volume 19, issue 13

Development and technical paper

|

13 Jul 2026

Development and technical paper |

| 13 Jul 2026

Development of the TCWA2 bulk cloud microphysics scheme and its integration with a dual-polarization radar operator for forecasting applications

Tzu-Chin Tsai, Jen-Ping Chen, Zhiquan Liu, Siou-Ying Jiang, Rong Kong, Ying-Jhang Wu, Junmei Ban, Ling-Feng Hsiao, Yu-Shuang Tang, Pao-Liang Chang, and Jing-Shan Hong

Data sets

Model outputs for TCWA2 WRF and MPAS simulations T.-C. Tsai https://doi.org/10.5281/zenodo.18502380

Model code and software

Source code for the TCWA2 microphysics scheme with embedded dual-polarization radar operator in MPAS (v1-GMD) T.-C. Tsai https://doi.org/10.5281/zenodo.21231493

Short summary

We developed a new cloud microphysics scheme that links simulated cloud and precipitation particles with radar signals. Idealized squall line and a real thunderstorm case in Taiwan show that the scheme produces physically meaningful storm structures and encouraging radar comparisons, while further refinement is still needed for ice particles, hydrometeor orientation, and radar-viewing assumptions.