Influence of convection on stratospheric water vapor  in the North American monsoon region

Yu, Wandi; Dessler, Andrew E.; Park, Mijeong; Jensen, Eric J.

doi:https://doi.org/10.5194/acp-20-12153-2020

Articles | Volume 20, issue 20

https://doi.org/10.5194/acp-20-12153-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-20-12153-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 20, issue 20

Research article

|

27 Oct 2020

Research article |

| 27 Oct 2020

Influence of convection on stratospheric water vapor in the North American monsoon region

Wandi Yu, Andrew E. Dessler, Mijeong Park, and Eric J. Jensen

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https://doi.org/10.5194/acp-20-12153-2020-supplement

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Code for <q>Influence of convection on stratospheric water vapor in the North American Monsoon region</q>, Atmospheric Chemistry and Physics W. Yu, A. Dessler, M. Park, and E. Jensen https://doi.org/10.5281/zenodo.4015534

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Short summary

The stratospheric water vapor mixing ratio over North America (NA) region is up to ~ 1 ppmv higher when deep convection occurs. We find substantial consistency in the interannual variations of NA water vapor anomaly and deep convection and explain both the summer seasonal cycle and interannual variability of the convective moistening efficiency. We show that the NA anticyclone and tropical upper tropospheric temperature determine how much deep convection moistens the lower stratosphere.