Nature Communications (Feb 2022)

Photodissociation of particulate nitrate as a source of daytime tropospheric Cl2

  • Xiang Peng,
  • Tao Wang,
  • Weihao Wang,
  • A. R. Ravishankara,
  • Christian George,
  • Men Xia,
  • Min Cai,
  • Qinyi Li,
  • Christian Mark Salvador,
  • Chiho Lau,
  • Xiaopu Lyu,
  • Chun Nan Poon,
  • Abdelwahid Mellouki,
  • Yujing Mu,
  • Mattias Hallquist,
  • Alfonso Saiz-Lopez,
  • Hai Guo,
  • Hartmut Herrmann,
  • Chuan Yu,
  • Jianing Dai,
  • Yanan Wang,
  • Xinke Wang,
  • Alfred Yu,
  • Kenneth Leung,
  • Shuncheng Lee,
  • Jianmin Chen

DOI
https://doi.org/10.1038/s41467-022-28383-9
Journal volume & issue
Vol. 13, no. 1
pp. 1 – 10

Abstract

Read online

This study unravels an important daytime Cl2 source in the extra-polar atmosphere and shows that photolysis of particle nitrate at high acidity produced unprecedented levels of Cl2, boosting the oxidative power and air pollutants like O3.