| DOI: | 10.1002/2015GL064583
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| 论文题名: | Glacial Atlantic overturning increased by wind stress in climate models |
| 作者: | Muglia J.; Schmittner A.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-8396
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| EISSN: | 1944-8127
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| 出版年: | 2015
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| 卷: | 42, 期:22 | | 起始页码: | 9862
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| 结束页码: | 9869
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| 语种: | 英语
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| 英文关键词: | AMOC
; circulation
; glacial
; PMIP3
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| Scopus关键词: | Boiler circulation
; Climate models
; Glacial geology
; Wind stress
; AMOC
; Atlantic meridional overturning circulations
; Glacial
; Last Glacial Maximum
; Model inter comparisons
; North atlantic deep water formations
; Ocean circulation models
; PMIP3
; Oceanography
; climate modeling
; deep water formation
; ice sheet
; Last Glacial Maximum
; Northern Hemisphere
; overturn
; paleoclimate
; proxy climate record
; reconstruction
; solute transport
; wind stress
; Atlantic Ocean
; Atlantic Ocean (North)
; North America
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| 英文摘要: | Previous Paleoclimate Model Intercomparison Project (PMIP) simulations of the Last Glacial Maximum (LGM) Atlantic Meridional Overturning Circulation (AMOC) showed dissimilar results on transports and structure. Here we analyze the most recent PMIP3 models, which show a consistent increase (on average by 41 ± 26%) and deepening (663 ± 550 m) of the AMOC with respect to preindustrial simulations, in contrast to some reconstructions from proxy data. Simulations run with the University of Victoria (UVic) ocean circulation model suggest that this is caused by changes in the Northern Hemisphere wind stress, brought about by the presence of ice sheets over North America in the LGM. When forced with LGM wind stress anomalies from PMIP3 models, the UVic model responds with an increase of the northward salt transport in the North Atlantic, which strengthens North Atlantic Deep Water formation and the AMOC. These results improve our understanding of the LGM AMOC's driving forces and suggest that some ocean mechanisms may not be correctly represented in PMIP3 models or some proxy data may need reinterpretation. Key Points PMIP3 models show an increase in transport and deepening of the AMOC in the LGM This result contradicts some observations from proxy data in sediments A circulation model indicates that the increment may be due to wind stress. © 2015. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84956892219&doi=10.1002%2f2015GL064583&partnerID=40&md5=18f3e12d51706dbf1221ad98c7e622cc
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/8012
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| Appears in Collections: | 科学计划与规划
气候变化与战略
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作者单位: | College of Earth, Ocean, and Atmospheric Sciences, Oregon State University, Corvallis, OR, United States
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| Recommended Citation: | |
Muglia J.,Schmittner A.. Glacial Atlantic overturning increased by wind stress in climate models[J]. Geophysical Research Letters,2015-01-01,42(22).
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