Air quality deterioration episode associated with a typhoon over the complex topographic environment in central Taiwan

Lin, Chuan-Yao; Sheng, Yang-Fan; Chen, Wan-Chin; Chou, Charles C. K.; Chien, Yi-Yun; Chen, Wen-Mei

doi:https://doi.org/10.5194/acp-21-16893-2021

Articles | Volume 21, issue 22

https://doi.org/10.5194/acp-21-16893-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-21-16893-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 21, issue 22

Research article

|

19 Nov 2021

Research article |

| 19 Nov 2021

Air quality deterioration episode associated with a typhoon over the complex topographic environment in central Taiwan

Chuan-Yao Lin, Yang-Fan Sheng, Wan-Chin Chen, Charles C. K. Chou, Yi-Yun Chien, and Wen-Mei Chen

Data sets

Hourly historical Taiwan EPA air quality monitoring data The Environmental Protection Administration's environmental open data platform https://data.epa.gov.tw/dataset/aqx_p_15

Sounding observations Ministry of Science and Technology and Chinese Culture University https://dbar.pccu.edu.tw/

Short summary

Taiwan and Hong Kong experience air quality deterioration as typhoons approach. However, the mechanism of the formation of poor air quality may differ and still not be well documented in Taiwan. The interaction between easterly typhoon circulation and Taiwan’s Central Mountain Range resulted in a lee side vortex formation. Simulation results indicated that the lee vortex and land–sea breeze, as well as the boundary layer development, were the key mechanisms.