Tracing the origins of stratospheric ozone intrusions: direct vs. indirect pathways and their impacts on Central and Eastern China in spring–summer 2019

Meng, Kai; Zhao, Tianliang; Bai, Yongqing; Wu, Ming; Cao, Le; Hou, Xuewei; Luo, Yuehan; Jiang, Yongcheng

doi:https://doi.org/10.5194/acp-24-12623-2024

Articles | Volume 24, issue 22

https://doi.org/10.5194/acp-24-12623-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-24-12623-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 24, issue 22

Research article

|

14 Nov 2024

Research article |

| 14 Nov 2024

Tracing the origins of stratospheric ozone intrusions: direct vs. indirect pathways and their impacts on Central and Eastern China in spring–summer 2019

Kai Meng, Tianliang Zhao, Yongqing Bai, Ming Wu, Le Cao, Xuewei Hou, Yuehan Luo, and Yongcheng Jiang

Supplement

https://doi.org/10.5194/acp-24-12623-2024-supplement

Data sets

CESM2.1/CAM-chem Instantaneous Output for Boundary Conditions Rebecca R. Buchholz et al. https://doi.org/10.5065/NMP7-EP60

OMI/Aura Ozone (O3) Profile 1-Orbit L2 Swath 13x48km V003 Johan De Haan and Pepijn Veefkind https://doi.org/10.5067/Aura/OMI/DATA2026

Global Fore cast System (GFS) data U.S. National Weather Service http://nomads.ncep.noaa.gov/

The CAMS reanalysis of atmospheric composition (https://ads.atmosphere.copernicus.eu/datasets/cams-global-reanalysis-eac4?tab=download) Antje Inness et al. https://doi.org/10.5194/acp-19-3515-2019

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Short summary

We studied the impact of stratospheric intrusions (SIs) on tropospheric and near-surface ozone in Central and Eastern China from a stratospheric source tracing perspective. SIs contribute the most in the eastern plains, with a contribution exceeding 15 %, and have a small contribution to the west and south. Western Siberia and Mongolia are the most critical source areas for indirect and direct SIs, with the Rossby wave and northeast cold vortex being important driving circulation systems.