loading page

Do Absorbing Aerosols or Scattering Aerosols Dominate the Impact of Aerosols on Ozone via Influencing Photolysis Rates?
  • +3
  • Jinhui Gao,
  • Ying LI,
  • Zhouqing Xie,
  • Lili Wang,
  • Bo Hu,
  • Fangwen Bao
Jinhui Gao
Chengdu University of Information Technology
Author Profile
Ying LI
Southern University of Science and Technology

Corresponding Author:[email protected]

Author Profile
Zhouqing Xie
University of Science and Technology of China
Author Profile
Lili Wang
Institute of Atmospheric Physics, Chinese Academy of Sciences
Author Profile
Bo Hu
State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences
Author Profile
Fangwen Bao
Southern University of Science and Technology
Author Profile

Abstract

Since different optical properties, absorbing aerosols (AA) and scattering aerosols (SA) impact ozone differently via influencing photolysis rates. Notably, studies on the impact of SA have not reached a consistent conclusion, leading to disconfirmation regarding which type of aerosol dominates the impact of aerosols on ozone via influencing photolysis rates. Our results show that, in contrast to the decreasing impact of AA on ozone, SA decrease ozone chemical contribution (CHEM) near surface but increase that aloft, subsequently enhancing the vertical exchange of ozone and resulting the counteraction of the opposite vertical changes in CHEM. Consequently, ozone changed slightly, indicating that AA are the dominant aerosols. Reducing AA leads to ozone increase nonlinearly (ΔO3). More than 86% of North China Plain could be covered by ΔO3 when reducing more than 3/4 of AA. More attention should be paid on the balance between ozone and AA in determining synergetic control strategy.