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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/40468

Title: Millennial meridional dynamics of Indo-Pacific Warm Pool during the last termination
Authors: M.-C. Tsai
L. Lo
C.-C. Shen
K.-Y. Wei
G. S. Burr
H.-S. Mii
M.-T. Chen
S.-Y. Lee
Contributors: 國立臺灣海洋大學:應用地球科學研究所
Date: 2014-08
Issue Date: 2017-01-19T03:24:31Z
Publisher: Climate of the Past Discussions
Abstract: Abstract: 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 thousand years (ka) were built using planktonic foraminiferal geochemical 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 counterpart through glacial time. The N-IPWP SST 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 N- and S-IPWP were 1.5 °C during the Bølling/Allerød period and < 0.5 °C during both Heinrich event 1 and the Younger Dryas due to a warmer S-IPWP. A warm S-IPWP during the cold events snapshots may possibly weaken the southern hemispheric convection branch of the Hadley Cell and reduce precipitation in the Asian Monsoon region.
Relation: 10(4)
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/40468
Appears in Collections:[應用地球科學研究所] 期刊論文

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