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Author

Kang, Sarah M.
Climate Dynamics Lab
Research Interests
  • Climate change, ITCZ, Atmospheric general circulation, Polar amplification

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Modeling evidence that ozone depletion has impacted extreme precipitation in the austral summer

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Title
Modeling evidence that ozone depletion has impacted extreme precipitation in the austral summer
Author
Kang, Sarah M.Polvani, L.M.Fyfe, J.C.Son, S.-W.Sigmond, M.Correa, G.J.P.
Keywords
Dynamic origin; Extreme precipitation; Ozone depletion
Issue Date
201308
Publisher
AMER GEOPHYSICAL UNION
Citation
GEOPHYSICAL RESEARCH LETTERS, v.40, no.15, pp.4054 - 4059
Abstract
The impacts of stratospheric ozone depletion on the extremes of daily precipitation in the austral summer are explored using two global climate models. Both models indicate that stratospheric ozone losses since the late 1970s may have increased the frequency and intensity of very heavy precipitation in austral summer over southern high and subtropical latitudes, and may have decreased the frequency and intensity over southern midlatitudes. This hemispheric wide pattern of extreme precipitation response projects strongly onto a previously identified pattern of seasonal mean precipitation response, both of which are shown to be likely of dynamic rather than thermodynamic origin. Key Points: Ozone depletion has an impact on extreme rainfall in the Southern Hemisphere. Ozone depletion induced extreme rainfall change has a geographical pattern. The extreme rainfall changes caused by ozone depletion is of dynamic origin.
URI
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DOI
http://dx.doi.org/10.1002/grl.50769
ISSN
0094-8276
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