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| Titel |
Millennial meridional dynamics of the Indo-Pacific Warm Pool during the last termination |
| VerfasserIn |
L. Lo, C.-C. Shen, K.-Y. Wei, G. S. Burr, H.-S. Mii, M.-T. Chen, S.-Y. Lee, M.-C. Tsai |
| 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 ; 10, no. 6 ; Nr. 10, no. 6 (2014-12-23), S.2253-2261 |
| Datensatznummer |
250117089
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| Publikation (Nr.) |
 copernicus.org/cp-10-2253-2014.pdf |
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| Zusammenfassung |
| To develop an in-depth understanding of the natural dynamics of the
Indo-Pacific Warm Pool (IPWP) during the last deglaciation, stacked north-
(N-) and south-IPWP (S-IPWP) thermal and hydrological records over the past
23–10.5 ka were built using planktonic foraminiferal
geochemistry data from a new core, MD05-2925 (9.3° S, 151.5° E water depth 1661 m) in the Solomon Sea and eleven previous sites.
Ice-volume-corrected seawater δ18O (δ18OSW-IVC) stacks
show that S-IPWP δ18OSW-IVC values are indistinguishable
from their northern counterparts through glacial time. The N-IPWP SST (sea surface temperature)
stacked record features an increasing trend of 0.5 °C ka−1 since
18 ka. Its S-IPWP counterpart shows an earlier onset of temperature increase at
19 ka and a strong teleconnection to high-latitude climate in the Southern
Hemisphere. Meridional SST gradients between the N- and S-IPWP were 1–1.5 °C
during the Bølling/Allerød period and 1 °C during both
Heinrich event 1 and the Younger Dryas, due to a warmer S-IPWP. A warm
S-IPWP during the cold events could weaken the southern hemispheric branch
of the Hadley cell and reduce precipitation in the Asian monsoon region. |
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