Assessing the relative impacts of satellite ozone and its precursor observations to improve global tropospheric ozone analysis using multiple chemical reanalysis systems

Sekiya, Takashi; Emili, Emanuele; Miyazaki, Kazuyuki; Inness, Antje; Qu, Zhen; Pierce, R. Bradley; Jones, Dylan; Worden, Helen; Cheng, William Y. Y.; Huijnen, Vincent; Koren, Gerbrand

doi:https://doi.org/10.5194/acp-25-2243-2025

Articles | Volume 25, issue 4

https://doi.org/10.5194/acp-25-2243-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

Tropospheric Ozone Assessment Report Phase II (TOAR-II) Community...

https://doi.org/10.5194/acp-25-2243-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 25, issue 4

Research article

|

20 Feb 2025

Research article |

| 20 Feb 2025

Assessing the relative impacts of satellite ozone and its precursor observations to improve global tropospheric ozone analysis using multiple chemical reanalysis systems

Takashi Sekiya, Emanuele Emili, Kazuyuki Miyazaki, Antje Inness, Zhen Qu, R. Bradley Pierce, Dylan Jones, Helen Worden, William Y. Y. Cheng, Vincent Huijnen, and Gerbrand Koren

Supplement

https://doi.org/10.5194/acp-25-2243-2025-supplement

Data sets

CAMS global reanalysis (EAC4) A. Inness et al. https://ads.atmosphere.copernicus.eu/datasets/cams-global-reanalysis-eac4?tab=overview

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Short summary

Five global chemical reanalysis datasets were used to assess the relative impacts of assimilating satellite ozone and its precursor measurements on tropospheric ozone analyses for 2010. The multiple reanalysis system comparison allows an evaluation of the dependency of the impacts on different reanalysis systems. The results suggested the importance of satellite ozone and its precursor measurements for improving ozone analysis in the whole troposphere, with varying magnitudes among the systems.