| DOI: | 10.1175/JCLI-D-13-00211.1
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| Scopus记录号: | 2-s2.0-84892526911
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| 论文题名: | Dynamical reconstruction of upper-ocean conditions in the last glacial maximum atlantic |
| 作者: | Dail H.; Wunsch C.
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| 刊名: | Journal of Climate
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| ISSN: | 8948755
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| 出版年: | 2014
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| 卷: | 27, 期:2 | | 起始页码: | 807
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| 结束页码: | 823
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| 语种: | 英语
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| Scopus关键词: | Error estimates
; General circulation
; Last Glacial Maximum
; Least squares fit
; Near sea surfaces
; Sea ice modeling
; Subpolar gyres
; Westerly winds
; Glacial geology
; Sea ice
; Oceanography
; general circulation model
; gyre
; Last Glacial Maximum
; meridional circulation
; reconstruction
; sea ice
; sea surface temperature
; temperature gradient
; upper ocean
; upwelling
; westerly
; wind forcing
; Africa
; Atlantic Ocean
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| 英文摘要: | Proxies indicate that the Last Glacial Maximum (LGM) Atlantic Ocean was marked by increased meridional and zonal near sea surface temperature gradients relative to today. Using a least squares fit of a full general circulation and sea ice model to upper-ocean proxy data with specified error estimates, a seasonally varying reconstruction is sought of the Atlantic Ocean state that is consistent with both the known dynamics and the data. With reasonable uncertainty assumptions for the observations and the adjustable (control) variables, a consistent LGM ocean state is found, one not radically different from the modern one. Inferred changes include a strengthening of the easterly and westerly winds, leading to strengthened subtropical and subpolar gyres, and increased upwelling favorable winds off the coast of Africa, leading to particularly cold SSTs in those regions. © 2014 American Meteorological Society. |
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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/51225
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| Appears in Collections: | 气候变化事实与影响
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作者单位: | Massachusetts Institute of Technology, Cambridge, MA, United States
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| Recommended Citation: | |
Dail H.,Wunsch C.. Dynamical reconstruction of upper-ocean conditions in the last glacial maximum atlantic[J]. Journal of Climate,2014-01-01,27(2)
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