| DOI: | 10.1016/j.gloplacha.2014.07.009
|
| 论文题名: | Reconstructed moisture evolution of the deserts in northern China since the Last Glacial Maximum and its implications for the East Asian Summer Monsoon |
| 作者: | Li Q.; Wu H.; Yu Y.; Sun A.; Marković S.B.; Guo Z.
|
| ISSN: | 0921-8489
|
| 出版年: | 2014
|
| 卷: | 121 | | 起始页码: | 101
|
| 结束页码: | 112
|
| 语种: | 英语
|
| 英文关键词: | Dune activity
; East Asian summer monsoon
; Effective moisture
; Last Glacial Maximum
; Sea level
; Vegetation
|
| Scopus关键词: | Arid regions
; Atmospheric chemistry
; Atmospheric thermodynamics
; Carbon dioxide
; Deposits
; Glacial geology
; Incident solar radiation
; Moisture
; Rain
; Sea level
; Vegetation
; Atmospheric carbon dioxide
; East Asian summer monsoon
; Last Glacial Maximum
; Northern Hemispheres
; Rainfall variability
; Summer monsoon precipitation
; Terrestrial ecosystems
; Transport distances
; Climate change
; carbon dioxide
; climate prediction
; desert
; Last Glacial Maximum
; paleoclimate
; precipitation (climatology)
; summer
; timescale
; China
; Far East
|
| 英文摘要: | The East Asian summer monsoon (EASM) affects rainfall variability and consequently terrestrial ecosystems in the densely populated Asian region. Understanding the nature of EASM evolution is vital for interpreting the paleoclimatic conditions of the region and for predicting future climate changes. However, the relative importance of factors such as high northern latitude ice volume, low northern latitude summer insolation and atmospheric carbon dioxide (CO2) levels in controlling the EASM on orbital timescales remains controversial. The aeolian deposits and vegetation in the dry lands of northern China are highly sensitive to climatic changes. Here, we present a reconstruction of effective moisture levels in the region since the Last Glacial Maximum based on an analysis of changes in the sedimentary facies of aeolian deposits and vegetation type combined with reliable age control. The results demonstrate that extremely arid conditions prevailed from approximately 21-16ka BP; that conditions gradually became wetter from 16-8ka BP, reaching a peak in effective moisture from 8-4ka BP; and that relatively arid conditions prevailed thereafter. This pattern of moisture evolution probably reflects changes in summer monsoon precipitation. Although the strengthening of the EASM lagged variations in northern hemisphere insolation and atmospheric CO2 content, the strengthening was in phase with the rise in sea level from 21-6ka BP which was controlled by changes in global ice volume. Therefore our results suggest that sea level rise may have been a major driver of EASM precipitation in the desert area of northern China during this period, as a result of shortening the transport distance of oceanic moisture sources to the continental interior and thus enabling the monsoon rainfall belt to reach the study region. © 2014 Elsevier B.V. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84905371450&doi=10.1016%2fj.gloplacha.2014.07.009&partnerID=40&md5=825b9939c2e2f279ba99868b98d50c9a
|
| Citation statistics: |
|
| 资源类型: | 期刊论文
|
| 标识符: | http://119.78.100.158/handle/2HF3EXSE/11395
|
| Appears in Collections: | 全球变化的国际研究计划
|
|
There are no files associated with this item.
|
|
作者单位: | Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, 100029, China
|
| Recommended Citation: | |
Li Q.,Wu H.,Yu Y.,et al. Reconstructed moisture evolution of the deserts in northern China since the Last Glacial Maximum and its implications for the East Asian Summer Monsoon[J],2014-01-01,121.
|
|
|