Scopus记录号: 2-s2.0-85044049908
论文题名: Variability of East Asian summer monsoon precipitation during the Holocene and possible forcing mechanisms
作者: Lu F. ; Ma C. ; Zhu C. ; Lu H. ; Zhang X. ; Huang K. ; Guo T. ; Li K. ; Li L. ; Li B. ; Zhang W.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2019
卷: 52, 期: 2019-01-02 起始页码: 969
结束页码: 989
语种: 英语
英文关键词: Climate modeling
; CO 2 forcing
; EASM
; ENSO
; Holocene
; Ice volume forcing
; Pollen
; Quantitative reconstruction
; Summer precipitation
; Tropical forcing
英文摘要: Projecting how the East Asian summer monsoon (EASM) rainfall will change with global warming is essential for human sustainability. Reconstructing Holocene climate can provide critical insight into its forcing and future variability. However, quantitative reconstructions of Holocene summer precipitation are lacking for tropical and subtropical China, which is the core region of the EASM influence. Here we present high-resolution annual and summer rainfall reconstructions covering the whole Holocene based on the pollen record at Xinjie site from the lower Yangtze region. Summer rainfall was less seasonal and ~ 30% higher than modern values at ~ 10–6 cal kyr BP and gradually declined thereafter, which broadly followed the Northern Hemisphere summer insolation. Over the last two millennia, however, the summer rainfall has deviated from the downward trend of summer insolation. We argue that greenhouse gas forcing might have offset summer insolation forcing and contributed to the late Holocene rainfall anomaly, which is supported by the TraCE-21 ka transient simulation. Besides, tropical sea-surface temperatures could modulate summer rainfall by affecting evaporation of seawater. The rainfall pattern concurs with stalagmite and other proxy records from southern China but differs from mid-Holocene rainfall maximum recorded in arid/semiarid northern China. Summer rainfall in northern China was strongly suppressed by high-northern-latitude ice volume forcing during the early Holocene in spite of high summer insolation. In addition, the El Niño/Southern Oscillation might be responsible for droughts of northern China and floods of southern China during the late Holocene. Furthermore, quantitative rainfall reconstructions indicate that the Paleoclimate Modeling Intercomparison Project (PMIP) simulations underestimate the magnitude of Holocene precipitation changes. Our results highlight the spatial and temporal variability of the Holocene EASM precipitation and potential forcing mechanisms, which are very helpful for calibration of paleoclimate models and prediction of future precipitation changes in East Asia in the scenario of global warming. © 2018, Springer-Verlag GmbH Germany, part of Springer Nature. 资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/122455
Appears in Collections: 气候变化事实与影响
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作者单位: School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing, Jiangsu 210023, China; Jiangsu Collaborative Innovation Center for Climate Change, Nanjing, 210023, China; School of Earth Sciences and Engineering, Sun Yat-Sen University, Guangzhou, 510275, China; College of Environment and Planning, Henan University, Kaifeng, 475004, China; School of History and Culture, Sichuan University, Chengdu, 610064, China; College of Resources and Environment, Hebei Normal University, Shijiazhuang, 050024, China; Center for Hydrogeology and Environmental Geology, China Geological Survey, Baoding, 071051, China
Recommended Citation:
Lu F.,Ma C.,Zhu C.,et al. Variability of East Asian summer monsoon precipitation during the Holocene and possible forcing mechanisms[J]. Climate Dynamics,2019-01-01,52(2019-01-02)