EGU2020-8194
https://doi.org/10.5194/egusphere-egu2020-8194
EGU General Assembly 2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Exploring the trends and potential drivers of surface ozone in eastern China in 2015-2018

Ning Yang, Yanru Bai, Yong Zhu, Nan Ma, and Qiaoqiao Wang
Ning Yang et al.
  • Institute for Environmental and Climate Research (ECI), Ji Nan University, 510632 GuangZhou, China

In the last six years, China has experienced significant improvement in air quality due to great emission reduction efforts. However, ozone concentrations are still slowly increasing in three major regions of eastern China, respectively Jing-Jin-Ji(JJJ), Yangtze River Delta region(YRD) and Pearl River Delta region(PRD). It is shown from the 2015-2018 national urban air quality real-time release platform that the surface ozone in JJJ, YRD and PRD has increased each year and reached the highest in 2018. The monthly ozone concentration peaked in June in almost all cities of JJJ, while it had multiple peaks in other two regions (summer and autumn in YRD - and February, May and September in PRD). Simulation with a chemical transport model(GEOS-Chem) indicates that the formation of ozone is affected by the optical properties of PM2.5 and also the heterogeneous uptake of N2O5 on sea salt aerosol.

How to cite: Yang, N., Bai, Y., Zhu, Y., Ma, N., and Wang, Q.: Exploring the trends and potential drivers of surface ozone in eastern China in 2015-2018, EGU General Assembly 2020, Online, 4–8 May 2020, EGU2020-8194, https://doi.org/10.5194/egusphere-egu2020-8194, 2020