| DOI: | 10.1002/2014GL061382
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| 论文题名: | European glacial dust deposits: Geochemical constraints on atmospheric dust cycle modeling |
| 作者: | Rousseau D.-D.; Chauvel C.; Sima A.; Hatté C.; Lagroix F.; Antoine P.; Balkanski Y.; Fuchs M.; Mellett C.; Kageyama M.; Ramstein G.; Lang A.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-9651
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| EISSN: | 1944-9382
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| 出版年: | 2014
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| 卷: | 41, 期:21 | | 起始页码: | 7666
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| 结束页码: | 7674
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| 语种: | 英语
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| 英文关键词: | dust
; Europe
; last climate cycle
; loess
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| Scopus关键词: | Arid regions
; Benchmarking
; Boundary layers
; Climate models
; Deposition
; Geochemistry
; Geographical distribution
; Sediments
; Atmospheric model
; Climate cycle
; Climate feedbacks
; Critical constraints
; Europe
; Geochemical data
; loess
; Model experiments
; Dust
; aerosol
; atmospheric modeling
; boundary layer
; climate feedback
; deflation
; dust
; geochemical survey
; geographical distribution
; glacial environment
; loess
; Europe
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| 英文摘要: | For a long time global paleodust numerical simulations have greatly underestimated dust sources other than modern deserts. Recent modeling experiments incorporating glaciogenic sources of dust have positively improved the agreement between model and paleodust data. This highlights the importance of accurately representing all areas potentially subjected to deflation during an investigated interval. Geochemical results, obtained from European loess sequences collected along a 50°N transect, combined with dust emission simulations reveal the geographical distribution of the most important European dust sources between 34 ka and 18 ka. We demonstrate that most European dust traveled only a few hundred kilometers or less within the boundary layer from its source before deposition. We conclude that our results encourage acquisition of similar geochemical data for other relevant areas in the world. Further, they could provide critical constraints to benchmark atmospheric models, contributing to improve their performance in simulating dust cycle and associated climate feedbacks. Key Points We identify the main aerosol sources for different depositional areasThe main contributors were regions between 48 and 52°N, with variable hot spotsDust was transported at low elevation and over regional distances only ©2014. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84912077414&doi=10.1002%2f2014GL061382&partnerID=40&md5=a019bafd4a7b6c41356ade90c1cc181b
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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/6915
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| Appears in Collections: | 气候减缓与适应
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作者单位: | Ecole Normale Supérieure, Laboratoire de Météorologie Dynamique, CERES-ERTI, Paris, France
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| Recommended Citation: | |
Rousseau D.-D.,Chauvel C.,Sima A.,et al. European glacial dust deposits: Geochemical constraints on atmospheric dust cycle modeling[J]. Geophysical Research Letters,2014-01-01,41(21).
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