Photochemical impacts of haze pollution in an urban environment

Hollaway, Michael; Wild, Oliver; Yang, Ting; Sun, Yele; Xu, Weiqi; Xie, Conghui; Whalley, Lisa; Slater, Eloise; Heard, Dwayne; Liu, Dantong

doi:https://doi.org/10.5194/acp-19-9699-2019

Articles | Volume 19, issue 15

https://doi.org/10.5194/acp-19-9699-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

In-depth study of air pollution sources and processes within...

https://doi.org/10.5194/acp-19-9699-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 19, issue 15

Research article

|

01 Aug 2019

Research article |

| 01 Aug 2019

Photochemical impacts of haze pollution in an urban environment

Michael Hollaway, Oliver Wild, Ting Yang, Yele Sun, Weiqi Xu, Conghui Xie, Lisa Whalley, Eloise Slater, Dwayne Heard, and Dantong Liu

Data sets

APHH: Simulated photolysis rates using the Fast-JX model at the IAP-Beijing site during the winter and summer campaigns, Centre for Environmental Data Analysis M. Hollaway and O. Wild http://catalogue.ceda.ac.uk/uuid/4a1d547929d44698b91e0d75d417220b

APHH: Single Particle Soot Photometer measurements made at the IAP-Beijing site during the summer and winter campaigns, Centre for Environmental Data Analysis D. Liu http://catalogue.ceda.ac.uk/uuid/af3ccea589f9439e9e1f88c85d130965

APHH: Solar actinic UV flux photolysis rates made at the IAP-Beijing site during the summer and winter campaigns, Centre for Environmental Data Analysis L. Whalley and E. Slater http://catalogue.ceda.ac.uk/uuid/76b4ad364d71465d8f8b61e302eb2c4c

Short summary

This study, for the first time, uses combinations of aerosol and lidar data to drive an offline photolysis scheme. Absorbing species are shown to have the greatest impact on photolysis rate constants in the winter and scattering aerosol are shown to dominate responses in the summer. During haze episodes, aerosols are shown to produce a greater impact than cloud cover. The findings demonstrate the potential photochemical impacts of haze pollution in a highly polluted urban environment.