EGU General Assembly 2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

The influences of ozone precursor changes in tropical regions on tropospheric ozone burden

Yuqiang Zhang1,2, Lin Li1, Tao Tang3, Audrey Gaudel4,5, Bastien Sauvage6, J. Jason West2, and the Yuqiang Zhang*
Yuqiang Zhang et al.
  • 1Shandong University, Environment Research Institute, Chapel Hill, China (
  • 2Department of Environmental Sciences and Engineering, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
  • 3School of the Environment, Yale University, New Haven, CT 06511 USA
  • 4Cooperative Institute for Research in Environmental Sciences, CU Boulder, CO, USA
  • 5NOAA Chemical Sciences Laboratory, Boulder, CO, USA
  • 6Laboratoire d’Aérologie, Université de Toulouse, CNRS, UPS, France
  • *A full list of authors appears at the end of the abstract

Tropospheric ozone is an important greenhouse gas, is detrimental to human health and crop and ecosystem productivity, and controls the oxidizing capacity of the troposphere. Previous studies, using models, aircraft and remote observation datasets, have shown that the tropospheric ozone has increased significantly in the tropical regions. Sensitivities studies have also showed that the ozone precursor emissions in these tropical regions have been increasing for the past three decades. For this paper, we will work with worldwide scientists to investigate how the emission evolves in the tropical regions from 1995 to 2019, and how these changes have contributed to the global and other receptor regions tropospheric ozone burden increases, by using ensemble state-of-the-art global and regional chemical transport models.

Yuqiang Zhang:

TOARII Ozone and Precursors in the Tropics (OPT) Focus Working Group

How to cite: Zhang, Y., Li, L., Tang, T., Gaudel, A., Sauvage, B., and West, J. J. and the Yuqiang Zhang: The influences of ozone precursor changes in tropical regions on tropospheric ozone burden, EGU General Assembly 2023, Vienna, Austria, 24–28 Apr 2023, EGU23-10700,, 2023.