| DOI: | 10.1016/j.quascirev.2016.06.005
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| Scopus记录号: | 2-s2.0-84979647948
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| 论文题名: | North Atlantic-Fennoscandian Holocene climate trends and mechanisms |
| 作者: | Sejrup H.P.; Seppä H.; McKay N.P.; Kaufman D.S.; Geirsdóttir Ã.; de Vernal A.; Renssen H.; Husum K.; Jennings A.; Andrews J.T.
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| 刊名: | Quaternary Science Reviews
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| ISSN: | 2773791
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| 出版年: | 2016
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| 卷: | 147 | | 起始页码: | 365
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| 结束页码: | 378
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| 语种: | 英语
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| 英文关键词: | climate
; Fennoscandia
; Holocene
; North Atlantic
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| Scopus关键词: | Atmospheric temperature
; Oceanography
; Principal component analysis
; Solar radiation
; Surface waters
; Time series
; Climate
; Fennoscandia
; Holocenes
; Laurentide ice sheets
; North Atlantic
; Surface temperatures
; Temperature anomaly
; Temperature development
; Time series analysis
; albedo
; climate variation
; comparative study
; Holocene
; insolation
; Laurentide Ice Sheet
; meltwater
; principal component analysis
; proxy climate record
; regional climate
; sea surface temperature
; time series analysis
; uncertainty analysis
; Arctic Ocean
; Atlantic Ocean
; Fennoscandia
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| 英文摘要: | To investigate the mechanisms behind Holocene regional climate trends from north of 58°N in the North Atlantic-Fennoscandian region Principal Component Analysis (PCA) was performed and a temperature anomaly stack produced from 81 proxy derived summer temperature time series from 74 sites. The PC results show distinctly different trends for near-surface versus surface temperatures, demonstrating the importance of handling these separately. The first PC of weighted sea surface summer temperature time series and continental time series explains 45 ± 8% of the variance, where the uncertainty is the standard deviation of the distribution of variance explained across the 1000 age-uncertain ensemble members. PC1 has a relatively uniform expression over the whole region, closely following the summer insolation at 65°N. The second PC explains 22 ± 4% of the variance and shows a non-uniform expression, with loadings in opposite directions in the northern and southeastern parts of the region. Comparing the PC time series with model runs and with the timing of the demise of the Laurentide Ice Sheet (LIS), suggest that this pattern reflects both topographic and albedo effects of the LIS as well as release of meltwater into the North Atlantic and Arctic Oceans. Comparing the stack of gridded records with published global stacks reveals an unusual Holocene temperature development in the North Atlantic-Fennoscandian region most likely resulting from the location relative to the decaying LIS. © 2016 Elsevier Ltd |
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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/59507
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| Appears in Collections: | 过去全球变化的重建
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作者单位: | Department of Earth Sciences, University of Bergen, Bergen, Norway; Department of Geosciences and Geography, University of Helsinki, Helsinki, Finland; School of Earth Sciences & Environmental Sustainability, Northern Arizona University, Flagstaff, AZ, United States; Department of Earth Sciences and Institute of Earth Sciences, University of Iceland, Reykjavik, Iceland; GEOTOP, Université du Québec à Montréal, Montreal, Canada; Department of Earth Sciences, VU University Amsterdam, Amsterdam, Netherlands; Norwegian Polar Institute, Fram Centre, Tromsø, Norway; Institute of Arctic and Alpine Research, University of Colorado & Department of Geological Sciences, Boulder, United States
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| Recommended Citation: | |
Sejrup H.P.,Seppä H.,McKay N.P.,et al. North Atlantic-Fennoscandian Holocene climate trends and mechanisms[J]. Quaternary Science Reviews,2016-01-01,147
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