| DOI: | 10.1016/j.quascirev.2016.03.009
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| Scopus记录号: | 2-s2.0-84962833473
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| 论文题名: | The structure of Holocene climate change in mid-latitude North America |
| 作者: | Shuman B.N.; Marsicek J.
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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: | 141 | | 起始页码: | 38
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| 结束页码: | 51
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| 语种: | 英语
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| 英文关键词: | Abrupt change
; Climate change
; Holocene
; North America
; Precipitation
; Temperature
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| Scopus关键词: | Atmospheric temperature
; Glaciers
; Ice
; Lakes
; Moisture
; Oceanography
; Precipitation (chemical)
; Surface waters
; Temperature
; Abrupt change
; Holocene climate change
; Holocenes
; Ice sheet dynamics
; Lake level changes
; Laurentide ice sheets
; North America
; Sea surface temperatures
; Climate change
; climate variation
; cooling
; data set
; historical record
; Holocene
; lake dynamics
; Laurentide Ice Sheet
; low temperature
; moisture
; paleoclimate
; palynology
; precipitation (climatology)
; sea surface temperature
; statistical analysis
; Idaho
; Maine
; United States
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| 英文摘要: | A sequence of long-term and rapid changes during the Holocene appears in a network of 40 well-resolved paleoclimate datasets from mid-latitude North America, including records of pollen-inferred temperatures, alkenone-derived sea-surface temperatures (SSTs), lake-level changes, dust accumulation, and lake isotopes from Idaho to Maine. Statistical analyses reveal that changes in insolation and the Laurentide Ice Sheet explain 51.7% of the variance in the records, especially multi-millennial trends, but peak rates of change indicate additional rapid changes at ca. 10.8, 9.4, 8.3, 7.0, 5.5-5.2, 4.7, 2.1, and 0.9 ka. Step changes between 9.4 and 8.3 ka relate to ice sheet dynamics that warmed much of the region, and changes at 5.5 ka were the largest since the demise of the ice sheet. The shift at 5.5 ka initiated widespread cooling and increases in effective moisture, which culminated in the coolest, wettest millennia in most areas after 2.1 ka. Replicated evidence from multiple records also shows a spatially-varied set of multi-century fluctuations including 1) low temperatures and high effective moisture at 5.5-4.8 ka in the mid-continent and 2) repeated phases of low SSTs, cool summers, and drought superimposed upon long cooling, moistening trends in eastern North American since 5.5 ka. © 2016. |
| 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/59595
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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 Geology and Geophysics, Roy J. Shlemon Center for Quaternary Studies, University of Wyoming, Laramie, WY, United States
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| Recommended Citation: | |
Shuman B.N.,Marsicek J.. The structure of Holocene climate change in mid-latitude North America[J]. Quaternary Science Reviews,2016-01-01,141
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