Effects of ozone cooling in the tropical lower stratosphere and upper troposphere

Forster, Piers M., Bodeker, Greg, Schofield, Robyn, Solomon, Susan and Thompson, David ORCID: https://orcid.org/0000-0002-5413-4376 (2007) Effects of ozone cooling in the tropical lower stratosphere and upper troposphere. Geophysical Research Letters, 34 (23). ISSN 0094-8276

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Abstract

In this paper, we examine the tropical lower stratosphere and upper troposphere and elucidate the key role of ozone changes in driving temperature trends in this region. We use a radiative fixed dynamical heating model to show that the effects of tropical ozone decreases at 70 hPa and lower pressures can lead to significant cooling not only at stratospheric levels, but also in the “sub-stratosphere/upper tropospheric” region around 150–70 hPa. The impact of stratospheric ozone depletion on upper tropospheric temperatures stems from reduced longwave emission from above. The results provide a possible explanation for the long-standing discrepancy between modeled and measured temperature trends in the uppermost tropical troposphere and can explain the latitudinal near-homogeneity of recent stratospheric temperature trends.

Item Type: Article
Uncontrolled Keywords: sdg 12 - responsible consumption and production ,/dk/atira/pure/sustainabledevelopmentgoals/responsible_consumption_and_production
Faculty \ School: Faculty of Science > School of Environmental Sciences
UEA Research Groups: Faculty of Science > Research Groups > Centre for Ocean and Atmospheric Sciences
Faculty of Science > Research Groups > Climatic Research Unit
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Depositing User: LivePure Connector
Date Deposited: 07 Jun 2022 14:30
Last Modified: 15 Jun 2023 05:31
URI: https://ueaeprints.uea.ac.uk/id/eprint/85433
DOI: 10.1029/2007GL031994

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