Deepwater Formation in the North Pacific During the Last Glacial Termination

Y. Okazaki, A. Timmermann, L. Menviel, N. Harada, A. Abe-Ouchi, M. O. Chikamoto, A. Mouchet, H. Asahi

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165 Citations (Scopus)

Abstract

Between 17,500 and 15,000 years ago, the Atlantic meridional overturning circulation weakened substantially in response to meltwater discharges from disintegrating Northern Hemispheric glacial ice sheets. The global effects of this reorganization of poleward heat flow in the North Atlantic extended to Antarctica and the North Pacific. Here we present evidence from North Pacific paleo surface proxy data, a compilation of marine radiocarbon age ventilation records, and global climate model simulations to suggest that during the early stages of the Last Glacial Termination, deep water extending to a depth of ~2500 to 3000 meters was formed in the North Pacific. A switch of deepwater formation between the North Atlantic and the North Pacific played a key role in regulating poleward oceanic heat transport during the Last Glacial Termination.

Original languageEnglish
Pages (from-to)200-204
Number of pages5
JournalScience
Volume329
Issue number5988
DOIs
Publication statusPublished - Jul 9 2010

All Science Journal Classification (ASJC) codes

  • General

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    Okazaki, Y., Timmermann, A., Menviel, L., Harada, N., Abe-Ouchi, A., Chikamoto, M. O., Mouchet, A., & Asahi, H. (2010). Deepwater Formation in the North Pacific During the Last Glacial Termination. Science, 329(5988), 200-204. https://doi.org/10.1126/science.1190612