气候变化领域集成服务门户(CCPortal): Using stable isotopes to understand seasonal and interannual dynamics in moisture sources and atmospheric circulation in precipitation

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DOI	10.1002/hyp.11388
	Using stable isotopes to understand seasonal and interannual dynamics in moisture sources and atmospheric circulation in precipitation
	Tang, Yu; Song, Xianfang; Zhang, Yinghua; Han, Dongmei; Ai, Likun; Zhao, Tianbao; Wang, Yajun
通讯作者	Song, XF (通讯作者)
发表日期	2017
ISSN	0885-6087
EISSN	1099-1085
起始页码	4682
结束页码	4692
卷号	31 期号:26
英文摘要	Stable isotopes in precipitation are useful tracers to strengthen understanding of climate change and hydrological processes. In this study, the moisture sources of 190 precipitation events in Beijing were analysed using the Hybrid Single-particle Lagrangian Integrated Trajectory model, based on which we studied the relation between variations in precipitation O-18 and dynamics in moisture sources and atmospheric circulation in seasonal and interannual timescales. Categorization of 7 groups of moisture sources was performed, among which oceanic moisture sources presented lower O-18 in precipitation than continental moisture sources. The results show that seasonal variations of precipitation O-18 were caused by changes of moisture sources. In summer, moisture from proximal oceans dominated vapour transport to Beijing due to increasing monsoon strength and resulted in a relatively small variation of precipitation O-18. At the interannual timescale, the variations of O-18 in summer precipitation were related to dynamics in oceanic moistures, showing depleted values when the contribution of oceanic moistures, especially the proportion of long-distance oceanic moisture, was high. Further analysis indicated that changes of oceanic moisture sources were controlled by the strength of summer monsoons. These findings address the complexity of moisture sources in midlatitude monsoon areas and suggest that isotopic signals in precipitation have the potential to deduce changes in moisture sources and atmospheric circulation and can therefore serve for palaeoclimate reconstruction.
关键词	RIVER-BASIN TIANSHAN MOUNTAINS DELTA-O-18 VALUES CLIMATIC CONTROLS SUMMER MONSOON DEUTERIUM WATER VARIABILITY TRANSPORT RAINFALL
英文关键词	atmospheric circulation; Beijing; moisture sources; oxygen-18; precipitation events
语种	英语
WOS研究方向	Water Resources
WOS类目	Water Resources
WOS记录号	WOS:000418407200006
来源期刊	HYDROLOGICAL PROCESSES
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258913
推荐引用方式 GB/T 7714	Tang, Yu,Song, Xianfang,Zhang, Yinghua,et al. Using stable isotopes to understand seasonal and interannual dynamics in moisture sources and atmospheric circulation in precipitation[J]. 中国科学院青藏高原研究所,2017,31(26).
APA	Tang, Yu.,Song, Xianfang.,Zhang, Yinghua.,Han, Dongmei.,Ai, Likun.,...&Wang, Yajun.(2017).Using stable isotopes to understand seasonal and interannual dynamics in moisture sources and atmospheric circulation in precipitation.HYDROLOGICAL PROCESSES,31(26).
MLA	Tang, Yu,et al."Using stable isotopes to understand seasonal and interannual dynamics in moisture sources and atmospheric circulation in precipitation".HYDROLOGICAL PROCESSES 31.26(2017).