DOI: 10.1016/j.quascirev.2020.106191
论文题名: Late Holocene monsoon precipitation changes in southern China and their linkage to Northern Hemisphere temperature
作者: Zhao K. ; Wang Y. ; Edwards R.L. ; Cheng H. ; Kong X. ; Liu D. ; Shao Q. ; Cui Y. ; Huang C. ; Ning Y. ; Yang X.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2020
卷: 232 语种: 英语
英文关键词: Monsoon precipitation
; Southern China
; Spatial pattern
; Speleothem
; Temperature
Scopus关键词: Calcite
; Caves
; Glacial geology
; Rain
; Temperature
; Thermal gradients
; Asian summer monsoons
; Intertropical convergence zone
; Monsoon precipitation
; Natural climatic variability
; Southern China
; Spatial patterns
; Speleothem
; Summer monsoon rainfall
; Atmospheric thermodynamics
; Holocene
; interglacial
; intertropical convergence zone
; Little Ice Age
; Medieval Warm Period
; monsoon
; Northern Hemisphere
; precipitation (climatology)
; rainfall
; reconstruction
; spatial analysis
; speleothem
; stalagmite
; temperature effect
; China
; Guizhou
; India
; Wulu Cave
英文摘要: Observations and models suggest a latitudinal redistribution of precipitation as a result of ongoing global climatic warming. However, the dynamic link between temperature and regional precipitation in the course of natural climatic variability during the current interglacial period remains unclear, especially in the monsoon regions of China. Here we present a reconstruction of a ∼5 year-resolution summer monsoon rainfall record for the past 3200 years, based on 622 pairs of δ18O and δ13C and 29 230Th dates from a stalagmite (Wu37) from Wulu Cave in southern China. A close similarity between the δ18O and δ13C records on centennial to decadal timescales suggests that calcite δ18O is most likely a proxy associated with monsoon precipitation. The record reveals that the Little Ice Age (650 - 100 yr B.P.) was a relatively humid period, with two centennial-scale wet events, compared with the Medieval Warm Period (1050 - 650 yr B.P.). In contrast with previous observations in India and northern China, monsoon precipitation variations indicated by our record and other cave records nearby were inversely related to changes in Northern Hemisphere (NH) temperature over the past two millennia, in particular to variations in the thermal gradient between the Northern and Southern hemispheres. This suggests that NH temperature has an important influence on summer precipitation in southern China, via the interhemispheric thermal gradient and land-ocean thermal contrast. In addition, we find that variations of monsoon rainfall in southern China on multi-centennial to centennial timescales are inversely correlated with observed rainfall in the core monsoon region of India and in the northern fringe of the Asian summer monsoon region in China. This spatial pattern of rainfall variability can be interpreted as a result of the migration of the intertropical convergence zone that is likely dominated by the interhemispheric thermal gradient via cross-equatorial airflows. © 2020 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/158698
Appears in Collections: 气候变化与战略
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作者单位: School of Geography, Nanjing Normal University, Nanjing, 210023, China; Key Laboratory of Virtual Geographic Environment (Nanjing Normal University), Ministry of Education, Nanjing, 210023, China; Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing, 210023, China; Department of Geology and Geophysics, University of Minnesota, Minneapolis, MN 55455, United States; Institute of Global Environmental Change, Xi'an Jiaotong University, Xi'an, 710049, China; School of Geographical Sciences, Southwest University, Chongqing, 400715, China
Recommended Citation:
Zhao K.,Wang Y.,Edwards R.L.,et al. Late Holocene monsoon precipitation changes in southern China and their linkage to Northern Hemisphere temperature[J]. Quaternary Science Reviews,2020-01-01,232