DOI: 10.1038/ngeo2603
论文题名: Deglacial Indian monsoon failure and North Atlantic stadials linked by Indian Ocean surface cooling
作者: Tierney J.E. ; Pausata F.S.R. ; Demenocal P.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2016
卷: 9, 期: 1 起始页码: 46
结束页码: 50
语种: 英语
Scopus关键词: climate forcing
; cooling
; deglaciation
; Heinrich event
; monsoon
; paleoclimate
; proxy climate record
; sea surface temperature
; temperature anomaly
; Younger Dryas
; Arabian Sea
; Atlantic Ocean
; Atlantic Ocean (North)
; India
; Indian Ocean
英文摘要: The Indian monsoon, the largest monsoon system on Earth, responds to remote climatic forcings, including temperature changes in the North Atlantic. The monsoon was weak during two cool periods that punctuated the last deglaciation-Heinrich Stadial 1 and the Younger Dryas. It has been suggested that sea surface cooling in the Indian Ocean was the critical link between these North Atlantic stadials and monsoon failure; however, based on existing proxy records it is unclear whether surface temperatures in the Indian Ocean and Arabian Sea dropped during these intervals. Here we compile new and existing temperature proxy data from the Arabian Sea, and find that surface temperatures cooled whereas subsurface temperatures warmed during both Heinrich Stadial 1 and the Younger Dryas. Our analysis of model simulations shows that surface cooling weakens the monsoon winds and leads to destratification of the water column and substantial subsurface warming. We thus conclude that sea surface temperatures in the Indian Ocean are indeed the link between North Atlantic climate and the strength of the Indian monsoon. © 2015 Macmillan Publishers Limited. All rights reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/106103
Appears in Collections: 气候减缓与适应 科学计划与规划
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作者单位: University of Arizona, Department of Geosciences, 1040 E 4th Street, Tucson, AZ, United States; Woods Hole Oceanographic Institution, 266 Woods Hole Road, Woods Hole, MA, United States; Department of Meteorology, Bolin Centre for Climate Change Research, Stockholm University, Arrhenius Väg 16C, Stockholm, Sweden; Lamont-Doherty Earth Observatory, Columbia University, 61 Route 9W, Palisades, NY, United States
Recommended Citation:
Tierney J.E.,Pausata F.S.R.,Demenocal P.. Deglacial Indian monsoon failure and North Atlantic stadials linked by Indian Ocean surface cooling[J]. Nature Geoscience,2016-01-01,9(1)