Slow feedbacks resulting from strongly enhanced atmospheric methane mixing ratios in a chemistry–climate model with mixed-layer ocean

Stecher, Laura; Winterstein, Franziska; Dameris, Martin; Jöckel, Patrick; Ponater, Michael; Kunze, Markus

doi:https://doi.org/10.5194/acp-21-731-2021

Articles | Volume 21, issue 2

https://doi.org/10.5194/acp-21-731-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

The Modular Earth Submodel System (MESSy) (ACP/GMD inter-journal...

https://doi.org/10.5194/acp-21-731-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 21, issue 2

Research article

|

19 Jan 2021

Research article |

| 19 Jan 2021

Slow feedbacks resulting from strongly enhanced atmospheric methane mixing ratios in a chemistry–climate model with mixed-layer ocean

Laura Stecher, Franziska Winterstein, Martin Dameris, Patrick Jöckel, Michael Ponater, and Markus Kunze

Supplement

https://doi.org/10.5194/acp-21-731-2021-supplement

Data sets

The highly structured Mod- ular Earth Submodel System (MESSy) P. Jöckel and the MESSy Consortium https://www.messy-interface.org/

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Short summary

This study investigates the impact of strongly increased atmospheric methane mixing ratios on the Earth's climate. An interactive model system including atmospheric dynamics, chemistry, and a mixed-layer ocean model is used to analyse the effect of doubled and quintupled methane mixing ratios. We assess feedbacks on atmospheric chemistry and changes in the stratospheric circulation, focusing on the impact of tropospheric warming, and their relevance for the model's climate sensitivity.