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| Titel |
Holocene evolution of the Southern Hemisphere westerly winds in transient simulations with global climate models |
| VerfasserIn |
V. Varma, M. Prange, U. Merkel, T. Kleinen, G. Lohmann, M. Pfeiffer, H. Renssen, A. Wagner, S. Wagner, M. Schulz |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1814-9324
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| Digitales Dokument |
URL |
| Erschienen |
In: Climate of the Past ; 8, no. 2 ; Nr. 8, no. 2 (2012-03-05), S.391-402 |
| Datensatznummer |
250005458
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| Publikation (Nr.) |
 copernicus.org/cp-8-391-2012.pdf |
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| Zusammenfassung |
| The Southern Hemisphere Westerly Winds (SWW) have been suggested to exert a
critical influence on global climate through the wind-driven upwelling of deep
water in the Southern Ocean and the potentially resulting atmospheric
CO2 variations. The investigation of the temporal and spatial evolution
of the SWW along with forcings and feedbacks remains a significant challenge
in climate research. In this study, the evolution of the SWW under orbital
forcing from the mid-Holocene (7 kyr BP) to pre-industrial modern times (250 yr BP) is examined with transient experiments using the
comprehensive coupled global climate model CCSM3. In addition, a model inter-comparison is
carried out using orbitally forced Holocene transient simulations from four
other coupled global climate models. Analyses and comparison of the model
results suggest that the annual and seasonal mean SWW were subject to an
overall strengthening and poleward shifting trend during the course of the
mid-to-late Holocene under the influence of orbital forcing, except for the
austral spring season, where the SWW exhibited an opposite trend of shifting
towards the equator. |
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