Thermodynamic constraint on the depth of the global tropospheric circulation

Thompson, David W. J. ORCID:, Bony, Sandrine and Li, Ying (2017) Thermodynamic constraint on the depth of the global tropospheric circulation. Proceedings of the National Academy of Sciences, 114 (31). pp. 8181-8186. ISSN 0027-8424

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The troposphere is the region of the atmosphere characterized by low static stability, vigorous diabatic mixing, and widespread condensational heating in clouds. Previous research has argued that in the tropics, the upper bound on tropospheric mixing and clouds is constrained by the rapid decrease with height of the saturation water vapor pressure and hence radiative cooling by water vapor in clear-sky regions. Here the authors contend that the same basic physics play a key role in constraining the vertical structure of tropospheric mixing, tropopause temperature, and cloud-top temperature throughout the globe. It is argued that radiative cooling by water vapor plays an important role in governing the depth and amplitude of large-scale dynamics at extratropical latitudes.

Item Type: Article
Faculty \ School: Faculty of Science > School of Environmental Sciences
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Depositing User: LivePure Connector
Date Deposited: 10 Jun 2022 10:30
Last Modified: 23 Oct 2022 03:48
DOI: 10.1073/PNAS.1620493114

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