气候变化领域集成服务门户(CCPortal): Tree-ring delta O-18 in southwestern China linked to variations in regional cloud cover and tropical sea surface temperature

CCPortal

DOI	10.1016/j.chemgeo.2011.10.001
	Tree-ring delta O-18 in southwestern China linked to variations in regional cloud cover and tropical sea surface temperature
	Liu, Xiaohong; An, Wenling; Treydte, Kerstin; Shao, Xuemei; Leavitt, Steven; Hou, Shugui; Chen, Tuo; Sun, Weizhen; Qin, Dahe
发表日期	2012
ISSN	0009-2541
起始页码	104
结束页码	115
卷号	291
英文摘要	In this paper, we present the first annual oxygen isotope (8180) record (1902 to 2004) from the latewood cellulose of trees growing in a temperate-moist forest in southwestern China. Tree-ring delta O-18 ranges from 12.8 to 18.6 parts per thousand and averages 15.2 parts per thousand. delta O-18 in the latewood negatively correlates with total cloud cover, relative humidity, and precipitation during the moist months (August to October) from 1951 to 2004 and, to a lesser extent, positively correlates with the temperature in June. Spatial correlation analysis revealed that tree-ring latewood delta O-18 is more strongly related to variability in regional cloud cover and precipitation in autumn. Tree-ring delta O-18 negatively correlates with the indices of the Indian summer monsoon (1948 to 2004), the western North Pacific monsoon (1948 to 2004), and with the East Asian summer monsoon (1902 to 2000), suggesting that these monsoons strongly influence the regional climate. Under global warming of last century, we found a strong inverse correlation between tree-ring delta O-18 and the Southern Oscillation index in different periods, indicating a complex association between the El Nino-Southern Oscillation and the regional climate, which in turn affects tree-ring delta O-18. Correlation with the global sea surface temperature (SST) indicates that climatic conditions in the Indian Ocean might play a dominant role in modulating cloud cover and precipitation over the study region during the monsoon seasons. We also found a significant correlation between tree-ring delta O-18 and SST over the western-north Pacific Ocean. Our results suggest strong links between tropical oceans and an ENSO-like climate with the oxygen-isotope sources and discrimination for trees in the study region. (C) 2011 Elsevier B.V. All rights reserved.
英文关键词	Oxygen isotopes; Abies forrestii; Latewood; Asian monsoon; ENSO; Southwestern China
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
来源期刊	CHEMICAL GEOLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/158630
作者单位	Liu, XH (corresponding author), Chinese Acad Sci, State Key Lab Cryospher Sci Cold & Arid Reg Envir, Donggang W Rd 320, Lanzhou 730000, Peoples R China.
推荐引用方式 GB/T 7714	Liu, Xiaohong,An, Wenling,Treydte, Kerstin,et al. Tree-ring delta O-18 in southwestern China linked to variations in regional cloud cover and tropical sea surface temperature[J],2012,291.
APA	Liu, Xiaohong.,An, Wenling.,Treydte, Kerstin.,Shao, Xuemei.,Leavitt, Steven.,...&Qin, Dahe.(2012).Tree-ring delta O-18 in southwestern China linked to variations in regional cloud cover and tropical sea surface temperature.CHEMICAL GEOLOGY,291.
MLA	Liu, Xiaohong,et al."Tree-ring delta O-18 in southwestern China linked to variations in regional cloud cover and tropical sea surface temperature".CHEMICAL GEOLOGY 291(2012).