<strong>Comparison of the SAPRC18 and SAPRC11 photochemical mechanisms for ozone simulation in China</strong>

Yu Wang; JinLong Ma; Peng Wang; Hongliang Zhang

Presentation information

[E] Poster

A (Atmospheric and Hydrospheric Sciences ) » A-AS Atmospheric Sciences, Meteorology & Atmospheric Environment

[A-AS03] Atmospheric Chemistry in Highly Polluted Environments

convener:Hongliang Zhang(Fudan University), Jianlin Hu(NUIST Nanjing University of Information Science and Technology), Jia Xing(Tsinghua University), Siyu Chen(Lanzhou University)

[AAS03-P07] Comparison of the SAPRC18 and SAPRC11 photochemical mechanisms for ozone simulation in China

*Yu Wang¹, JinLong Ma¹, Peng Wang², Hongliang Zhang¹ (1.Fudan University, 2.The Hong Kong Polytechnic University)

Keywords:S18, S11, CMAQ, photolysis rates

The latest SAPRC photochemical mechanism SAPRC18 (S18), an update from SAPRC11 (S11), is implemented into the Community Multi-scale Air Quality (CMAQ) model and applied to simulate ozone formation during the China Air Quality Study 2017. Compared to S11, S18 can better simulate NO_x recycling processes and formation of SOA precursors. The results from the S11 mechanism are compared with those from the S18 mechanism. The photolysis rates of new model species added to the mechanism by S11 are much lower than those of S18.