DOI: 10.1007/s00382-017-3780-0
Scopus记录号: 2-s2.0-85026557690
论文题名: Influence of glacial ice sheets on the Atlantic meridional overturning circulation through surface wind change
作者: Sherriff-Tadano S. ; Abe-Ouchi A. ; Yoshimori M. ; Oka A. ; Chan W.-L.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2018
卷: 50, 期: 2018-07-08 起始页码: 2881
结束页码: 2903
语种: 英语
英文关键词: AMOC
; Glacial climate
; Ice sheet
; Surface wind
Scopus关键词: atmospheric general circulation model
; boundary condition
; computer simulation
; deep water formation
; experimental study
; ice sheet
; Last Glacial Maximum
; meridional circulation
; overturn
; sea ice
; surface wind
; wind stress
; Arctic Ocean
; Atlantic Ocean
; Atlantic Ocean (North)
; Norwegian Sea
英文摘要: Coupled modeling studies have recently shown that the existence of the glacial ice sheets intensifies the Atlantic meridional overturning circulation (AMOC). However, most models show a strong AMOC in their simulations of the Last Glacial Maximum (LGM), which is biased compared to reconstructions that indicate both a weaker and stronger AMOC during the LGM. Therefore, a detailed investigation of the mechanism behind this intensification of the AMOC is important for a better understanding of the glacial climate and the LGM AMOC. Here, various numerical simulations are conducted to focus on the effect of wind changes due to glacial ice sheets on the AMOC and the crucial region where the wind modifies the AMOC. First, from atmospheric general circulation model experiments, the effect of glacial ice sheets on the surface wind is evaluated. Second, from ocean general circulation model experiments, the influence of the wind stress change on the AMOC is evaluated by applying wind stress anomalies regionally or at different magnitudes as a boundary condition. These experiments demonstrate that glacial ice sheets intensify the AMOC through an increase in the wind stress at the North Atlantic mid-latitudes, which is induced by the North American ice sheet. This intensification of the AMOC is caused by the increased oceanic horizontal and vertical transport of salt, while the change in sea ice transport has an opposite, though minor, effect. Experiments further show that the Eurasian ice sheet intensifies the AMOC by directly affecting the deep-water formation in the Norwegian Sea. © 2017, The Author(s). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/109347
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: Atmosphere and Ocean Research Institute, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, 277-8568, Japan; Faculty of Environmental Earth Science, Global Institute for Collaborative Research and Education, and Arctic Research Center, Hokkaido University, Sapporo, Japan
Recommended Citation:
Sherriff-Tadano S.,Abe-Ouchi A.,Yoshimori M.,et al. Influence of glacial ice sheets on the Atlantic meridional overturning circulation through surface wind change[J]. Climate Dynamics,2018-01-01,50(2018-07-08)