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| Titel |
The East Asian winter monsoon variability in response to precession during the past 150 000 yr |
| VerfasserIn |
M. Yamamoto, H. Sai, M.-T. Chen, M. Zhao |
| 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 ; 9, no. 6 ; Nr. 9, no. 6 (2013-12-13), S.2777-2788 |
| Datensatznummer |
250085274
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| Publikation (Nr.) |
 copernicus.org/cp-9-2777-2013.pdf |
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| Zusammenfassung |
| The response of the East Asian winter monsoon variability to
orbital forcing is still unclear, and hypotheses are controversial. We
present a 150 000 yr record of sea surface temperature difference (ΔSST)
between the South China Sea and other Western Pacific Warm Pool
regions as a proxy for the intensity of the Asian winter monsoon, because
the winter cooling of the South China Sea is caused by the cooling of
surface water at the northern margin and the southward advection of cooled
water due to winter monsoon winds. The ΔSST showed dominant
precession cycles during the past 150 000 yr. The ΔSST varies at
precessional band and supports the hypothesis that monsoon is regulated by
insolation changes at low-latitudes (Kutzbach, 1981), but contradicts
previous suggestions based on marine and loess records that eccentricity
controls variability on glacial–interglacial timescales. Maximum winter
monsoon intensity corresponds to the May perihelion at precessional band,
which is not fully consistent with the Kutzbach model of maximum winter
monsoon at the June perihelion. Variation in the East Asian winter monsoon
was anti-phased with the Indian summer monsoon, suggesting a linkage of
dynamics between these two monsoon systems on an orbital timescale. |
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