气候变化领域集成服务门户(CCPortal): East Asian Summer Monsoon moisture sustains summer relative humidity in the southwestern Gobi Desert; China: evidence from δ18O of tree rings

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DOI	10.1007/s00382-018-4515-6
	East Asian Summer Monsoon moisture sustains summer relative humidity in the southwestern Gobi Desert; China: evidence from δ18O of tree rings
	Li Q.; Liu Y.; Nakatsuka T.; Fang K.; Song H.; Liu R.; Sun C.; Li G.; Wang K.
发表日期	2019
ISSN	0930-7575
起始页码	6321
结束页码	6337
卷号	52 期号:11
英文摘要	The dominant climate-controlling system of the southwestern Gobi Desert and its surrounding areas in China at interannual to centennial time scale has not been determined. It is necessary to improve our understanding of the humidity variations in the past and forcing mechanisms in the southwestern Gobi Desert to enhance the accuracy of climate model predictions and cope with future desert advance/retreat crises resulting from climate change. We measured the annual stable oxygen isotope ratio (δ18O) in the cellulose of four Picea crassifolia trees growing on the fringe of the southwestern Gobi Desert from 1806 to 2011. Our tree-ring cellulose δ18O values (34.49‰) were considerably higher than those reported in other regions of Asia, suggesting that the southwestern Gobi Desert has been extremely arid over the past two centuries. The chronology of tree-ring cellulose δ18O is significantly (p < 0.01) negatively correlated with summer (June, July, and August) relative humidity (RH) records from 12 meteorological stations nearby our study region (Table 1). Based on the high correlation (r = − 0.740, p < 0.0001, n = 49) between tree-ring cellulose δ18O and instrumental summer RH from meteorological stations nearby our study region, we reconstructed summer RH variations during the past 206 years. Spatial correlation patterns between our reconstruction and several hydroclimate-related gridded data sets indicate that the reconstruction is representative of hydroclimate variations over a large area. Close agreement was observed between our reconstruction and several East Asian Summer Monsoon-related hydroclimate records. Our study indicates that the moisture from the east has introduced the RH to the southwestern Gobi Desert during the summer months over the past two centuries. © 2018, Springer-Verlag GmbH Germany, part of Springer Nature.
英文关键词	East Asian Summer Monsoon; Gobi Desert; Relative humidity; Stable oxygen isotope; Tree rings
语种	英语
scopus关键词	atmospheric moisture; climate change; climate variation; monsoon; oxygen isotope; relative humidity; stable isotope; tree ring; Gobi Desert; Picea crassifolia
来源期刊	Climate Dynamics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/146269
作者单位	State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an, 710061, China; Interdisciplinary Research Center of Earth Science Frontier (IRCESF) and Joint Center for Global Change Studies (JCGCS), Beijing Normal University, Beijing, 100875, China; School of Human Settlements and Civil Engineering, Xi’an Jiaotong University, Xi’an, 710049, China; Research Institute of Humanity and Nature, 457-4 Motoyama, Kamigamo, Kita-ku, Kyoto, 603-8047, Japan; Key Laboratory of Humid Subtropical Eco-geographical Process (Ministry of Education), College of Geographical Sciences, Fujian Normal University, Fuzhou, 350007, China; Dongdashan Natural Reserve, Ganzhou District, Zhangye, 734000, China
推荐引用方式 GB/T 7714	Li Q.,Liu Y.,Nakatsuka T.,et al. East Asian Summer Monsoon moisture sustains summer relative humidity in the southwestern Gobi Desert; China: evidence from δ18O of tree rings[J],2019,52(11).
APA	Li Q..,Liu Y..,Nakatsuka T..,Fang K..,Song H..,...&Wang K..(2019).East Asian Summer Monsoon moisture sustains summer relative humidity in the southwestern Gobi Desert; China: evidence from δ18O of tree rings.Climate Dynamics,52(11).
MLA	Li Q.,et al."East Asian Summer Monsoon moisture sustains summer relative humidity in the southwestern Gobi Desert; China: evidence from δ18O of tree rings".Climate Dynamics 52.11(2019).