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Drier tropical and ...
Drier tropical and subtropical Southern Hemisphere in the mid-Pliocene Warm Period
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Pontes, Gabriel M. (author)
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Wainer, Ilana (author)
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Taschetto, Andrea S. (author)
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Sen Gupta, Alex (author)
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Abe-Ouchi, Ayako (author)
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Brady, Esther C. (author)
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Chan, Wing-Le (author)
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Chandan, Deepak (author)
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Contoux, Camille (author)
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Feng, Ran (author)
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Hunter, Stephen J. (author)
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Kame, Yoichi (author)
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Lohmann, Gerrit (author)
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Otto-Bliesner, Bette L. (author)
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Peltier, W. Richard (author)
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Stepanek, Christian (author)
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Tindall, Julia (author)
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Tan, Ning (author)
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- Zhang, Qiong (author)
- Stockholms universitet,Institutionen för naturgeografi
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- Zhang, Zhongshi (author)
- Stockholms universitet,Institutionen för naturgeografi,Chinese Academy of Sciences, China; Bjerknes Centre for Climate Research, Norway
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(creator_code:org_t)
- 2020-08-10
- 2020
- English.
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In: Scientific Reports. - : Springer Science and Business Media LLC. - 2045-2322. ; 10:1
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https://doi.org/10.1...
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Abstract
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- Thermodynamic arguments imply that global mean rainfall increases in a warmer atmosphere; however, dynamical effects may result in more significant diversity of regional precipitation change. Here we investigate rainfall changes in the mid-Pliocene Warm Period (similar to 3 Ma), a time when temperatures were 2-3 degrees C warmer than the pre-industrial era, using output from the Pliocene Model Intercomparison Projects phases 1 and 2 and sensitivity climate model experiments. In the Mid-Pliocene simulations, the higher rates of warming in the northern hemisphere create an interhemispheric temperature gradient that enhances the southward cross-equatorial energy flux by up to 48%. This intensified energy flux reorganizes the atmospheric circulation leading to a northward shift of the Inter-Tropical Convergence Zone and a weakened and poleward displaced Southern Hemisphere Subtropical Convergences Zones. These changes result in drier-than-normal Southern Hemisphere tropics and subtropics. The evaluation of the mid-Pliocene adds a constraint to possible future warmer scenarios associated with differing rates of warming between hemispheres.
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Pontes, Gabriel ...
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Wainer, Ilana
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Taschetto, Andre ...
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Sen Gupta, Alex
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Abe-Ouchi, Ayako
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Brady, Esther C.
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show more...
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Chan, Wing-Le
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Chandan, Deepak
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Contoux, Camille
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Feng, Ran
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Hunter, Stephen ...
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Kame, Yoichi
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Lohmann, Gerrit
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Otto-Bliesner, B ...
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Peltier, W. Rich ...
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Stepanek, Christ ...
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Tindall, Julia
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Tan, Ning
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Zhang, Qiong
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Zhang, Zhongshi
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Earth and Relate ...
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Scientific Repor ...
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Stockholm University