The Pacific-Atlantic seesaw and the Bering Strait

Aixue Hu, Gerald A. Meehl, Weiqing Han, Ayako Abe-Ouchi, Carrie Morrill, Yusuke Okazaki, Megume O. Chikamoto

研究成果: Contribution to journalArticle査読

25 被引用数 (Scopus)

抄録

Paleo proxy data and previous modeling studies both indicate that the massive discharge of icebergs into the North Atlantic may have led to a (nearly) collapsed Atlantic meridional overturning circulation (AMOC), resulting in a seesaw-like climate change between the North Pacific and North Atlantic, with a warming in the former and a cooling in the latter. Here by using a fully coupled climate model, we show that this Pacific-Atlantic seesaw associated with changes of the AMOC can only occur when the Bering Strait is closed. As this strait is closed, the oceanic communication between the North Pacific and Atlantic is cut off. When AMOC collapses, the North Atlantic becomes cooler, but the North Pacific becomes warmer due to the buildup of the Pacific meridional overturning circulation which transports more warm and salty subtropical water into the North Pacific, leading to seesaw-like climate changes in the two ocean basins.

本文言語英語
論文番号L03702
ジャーナルGeophysical Research Letters
39
3
DOI
出版ステータス出版済み - 2 1 2012
外部発表はい

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Earth and Planetary Sciences(all)

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