Articles | Volume 22, issue 6
Research article
24 Mar 2022
Research article |  | 24 Mar 2022

The impact of peripheral circulation characteristics of typhoon on sustained ozone episodes over the Pearl River Delta region, China

Ying Li, Xiangjun Zhao, Xuejiao Deng, and Jinhui Gao

Data sets

NCEP FNL Operational Model Global Tropospheric Analyses, continuing from July 1999 National Centers for Environmental Prediction/National Weather Service/NOAA/U.S. Department of Commerce

Short summary
This study finds a new phenomenon of weak wind deepening (WWD) associated with the peripheral circulation of typhoon and gives the influence mechanism of WWD on its contribution to daily variation during sustained ozone episodes. The WWD provides the premise for pollution accumulation in the whole PBL and continued enhancement of ground-level ozone via vertical mixing processes. These findings could benefit the daily daytime ozone forecast in the PRD region and other areas.
Final-revised paper