The signature of ozone depletion on tropical temperature trends, as revealed by their seasonal cycle in model integrations with single forcings
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susan paper 2.pdf
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Author(s)
Polvani, Lorenzo M.
Solomon, Susan
Date Issued
September 2012
Journal
Journal of Geophysical Research. Atmospheres
Publisher
American Geophysical Union
Citation
Polvani, Lorenzo M., and Susan Solomon. “The Signature of Ozone Depletion on Tropical Temperature Trends, as Revealed by Their Seasonal Cycle in Model Integrations with Single Forcings.” Journal of Geophysical Research 117.D17 (2012): . CrossRef. Web.
Version
Final published version
Abstract
[1] The effect of ozone depletion on temperature trends in the tropical lower stratosphere is explored with an atmospheric general circulation model, and directly contrasted to the effect of increased greenhouse gases and warmer sea surface temperatures. Confirming and extending earlier studies we find that, over the second half of the 20th Century, the model's lower-stratospheric cooling caused by ozone depletion is several times larger than that induced by increasing greenhouse gases. Moreover, our model suggests that the response to different forcings is highly additive. Finally we demonstrate that when ozone depletion alone is prescribed in the model, the seasonal cycle of the resultant cooling trends in the lower stratosphere is quite similar to that recently reported in satellite and radiosonde observations: this constitutes strong, new evidence for the key role of ozone depletion on tropical lower-stratospheric temperature trends.
MIT Department
Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1029/2012jd017719
