Articles | Volume 20, issue 20
Atmos. Chem. Phys., 20, 12153–12161, 2020
https://doi.org/10.5194/acp-20-12153-2020
Atmos. Chem. Phys., 20, 12153–12161, 2020
https://doi.org/10.5194/acp-20-12153-2020
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 et al.

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Latest update: 27 Nov 2022
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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.
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