气候变化领域集成服务门户(CCPortal): Response of heterogeneous rainfall variability in East Asia to Hadley circulation reorganization during the late Quaternary

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DOI	10.1016/j.quascirev.2020.106562
	Response of heterogeneous rainfall variability in East Asia to Hadley circulation reorganization during the late Quaternary
	Zhao D.; Wan S.; Lu Z.; Zhai L.; Feng X.; Shi X.; Li A.
发表日期	2020
ISSN	0277-3791
卷号	247
英文摘要	The Quaternary East Asian summer rainfall evolution reconstructed with the Chinese speleothem δ18O records shows the consistency throughout the region of East Asia, and has long been considered equivalent to the monsoon intensity. Its variation and teleconnection with global climate were usually interpreted by the meridional shift of the intertropical convergence zone (ITCZ). However, many other proxy records, climate simulations and meteorological observations suggest the inconsistent rainfall patterns in the different regions of East Asia on multi-timescales. Such spatial heterogeneity in Quaternary East Asian summer rainfall indicates that the hydroclimate in this region is not fully paced by the migration of the ITCZ. Here, we report a sediment record of rainfall evolution during the last 400 ka in the northern East China Sea, and this record, in combination with a transient climate model simulation, indicates an out-of-phase relationship between rainfall over middle-southeastern East Asia and northern and southwestern East Asia on the precession band, with high boreal summer insolation corresponding to the increased rainfall intensity in the northern and southwestern East Asia, however, decreased rainfall intensity in the middle East Asia. We attribute this regional heterogeneity in East Asian rainfall to the reorganization of the Hadley circulation, including shifts in the ascending branch (ITCZ) and descending branch (subtropical westerly jet), in response to changes in the hemispheric meridional temperature gradient. Our results highlight the crucial role of the Hadley circulation in the East Asian hydroclimate and have important implications for future climate projections. © 2020 Elsevier Ltd
英文关键词	East Asian rainfall; East China Sea; Grain size; ITCZ; Sediment flux; Subtropical westerly jet
语种	英语
scopus关键词	Climate models; Climate model simulations; Hadley circulation; Implications for futures; Intertropical convergence zone; Meridional temperature gradient; Meteorological observation; Rainfall variability; Spatial heterogeneity; Rain; climate modeling; global climate; Hadley cell; insolation; intertropical convergence zone; monsoon; precipitation intensity; proxy climate record; speleothem; teleconnection; westerly; East China Sea; Pacific Ocean
来源期刊	Quaternary Science Reviews
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/151309
作者单位	Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China; Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266061, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, 266071, China; CAS Center for Excellence in Quaternary Science and Global Change, Xi'an, 710061, China; Department of Physical Geography and Ecosystem Science, Lund University, Sölvegatan 12, Lund, 22362, Sweden; Key Laboratory of Marine Sedimentology and Environmental Geology, First Institute of Oceanography, Ministry of Natural Resources, Qingdao, 266061, China
推荐引用方式 GB/T 7714	Zhao D.,Wan S.,Lu Z.,et al. Response of heterogeneous rainfall variability in East Asia to Hadley circulation reorganization during the late Quaternary[J],2020,247.
APA	Zhao D..,Wan S..,Lu Z..,Zhai L..,Feng X..,...&Li A..(2020).Response of heterogeneous rainfall variability in East Asia to Hadley circulation reorganization during the late Quaternary.Quaternary Science Reviews,247.
MLA	Zhao D.,et al."Response of heterogeneous rainfall variability in East Asia to Hadley circulation reorganization during the late Quaternary".Quaternary Science Reviews 247(2020).