Millennial meridional dynamics of the Indo-Pacific Warm Pool during the last termination

L. Lo, C. C. Shen, K. Y. Wei, G. S. Burr, H. S. Mii, M. T. Chen, S. Y. Lee, M. C. Tsai

研究成果: 雜誌貢獻文章

7 引文 斯高帕斯(Scopus)

摘要

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 kag-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.

原文英語
頁(從 - 到)2253-2261
頁數9
期刊Climate of the Past
10
發行號6
DOIs
出版狀態已發佈 - 2014 十二月 23

ASJC Scopus subject areas

  • Global and Planetary Change
  • Stratigraphy
  • Palaeontology

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  • 引用此

    Lo, L., Shen, C. C., Wei, K. Y., Burr, G. S., Mii, H. S., Chen, M. T., Lee, S. Y., & Tsai, M. C. (2014). Millennial meridional dynamics of the Indo-Pacific Warm Pool during the last termination. Climate of the Past, 10(6), 2253-2261. https://doi.org/10.5194/cp-10-2253-2014