Determination of the chemical equator from GEOS-Chem model simulation: a focus on the tropical western Pacific region

Sun, Xiaoyu; Palm, Mathias; Müller, Katrin; Hachmeister, Jonas; Notholt, Justus

doi:https://doi.org/10.5194/acp-23-7075-2023

Articles | Volume 23, issue 12

https://doi.org/10.5194/acp-23-7075-2023

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

https://doi.org/10.5194/acp-23-7075-2023

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

Articles | Volume 23, issue 12

Research article

|

26 Jun 2023

Research article |

| 26 Jun 2023

Determination of the chemical equator from GEOS-Chem model simulation: a focus on the tropical western Pacific region

Xiaoyu Sun, Mathias Palm, Katrin Müller, Jonas Hachmeister, and Justus Notholt

Supplement

https://doi.org/10.5194/acp-23-7075-2023-supplement

Data sets

Determination of the chemical equator from GEOS-Chem model simulation: a focus on the Tropical Western Pacific region Xiaoyu Sun, Mathias Palm, Justus Notholt, and Katrin Müller https://doi.org/10.5281/zenodo.7018391

Model code and software

XiaoyuSun-n/Chemical-Equator: Chemical-Equator Xiaoyu Sun https://doi.org/10.5281/zenodo.8073633

geoschem/GCClassic: GEOS-Chem 13.0.0 The International GEOS-Chem User Community https://doi.org/10.5281/zenodo.4618180

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Short summary

The tropical western Pacific (TWP) is an active interhemispheric transport region contributing significantly to the global climate. A method to determine the chemical equator was developed by model simulations of a virtual passive tracer to analyze transport in the tropics, with a focus on the TWP region. We compare the chemical equator with tropical rain belts and wind fields and obtain a vertical pattern of interhemispheric transport processes which shows tilt structure in certain seasons.