气候变化领域集成服务门户(CCPortal): A Combined Rock Magnetic and Meteorological Investigation of the Precipitation Boundary Across the Tibetan Plateau

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DOI	10.1029/2021GL094808
	A Combined Rock Magnetic and Meteorological Investigation of the Precipitation Boundary Across the Tibetan Plateau
	Ning, Wen-Xiao; Zan, Jin-Bo; Yang, Sheng-Li; Fang, Xiao-Min; Shen, Miao-Miao; Kang, Jian; Luo, Yuan-Long; Wang, Shu-Wen
通讯作者	Zan, JB (通讯作者)
发表日期	2021
ISSN	0094-8276
EISSN	1944-8007
卷号	48 期号:18
英文摘要	Characterizing the spatial distribution of precipitation across the Tibetan Plateau (TP) is important for understanding how the topography and atmospheric circulation influence the climatic patterns of the region. We collected 143 surface soil samples from the central and southeastern TP (SETP) for rock magnetic characterization of the spatial distribution of the pedogenic intensity. Comparison with meteorological data shows that pedogenic intensity decreases significantly along the pathway of moist air across the SETP toward the interior, and that there is a positive correlation between pedogenic magnetite/maghemite content and mean annual precipitation. By contrast, the samples from the central TP show a low degree of pedogenic alteration, consistent with the limited precipitation within this area. The results indicate the possibility of using magnetic properties of surface soils to determine the precipitation distribution in areas lacking meteorological stations. These observations, combined with published soil magnetic results, help to define the climatic boundary in the TP. Plain Language Summary Detailed information about the precipitation boundary across the Tibetan Plateau (TP) is lacking, which hinders our understanding of the dynamic relationships between precipitation distribution and atmospheric circulation patterns in this tectonically and climatically sensitive region. We used systematic environmental magnetic measurements of a large set of surface soil samples, combined with the analysiEs of a similar to 70-year meteorological data set to provide a comprehensive picture of the spatial distribution of precipitation in the TP and its adjacent areas. Additionally, a synthesis of all of the available magnetic data for surface samples clearly delineates the precipitation boundary between sub-humid to semi-arid and arid regions in the TP and its adjacent areas, providing important boundary conditions for regional climate modeling in the future.
关键词	REVERSAL CURVE DIAGRAMS MODERN SOILS FORC DIAGRAMS GRAIN-SIZE SUSCEPTIBILITY LOESS MOUNTAINS PROXY
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000703685100077
来源期刊	GEOPHYSICAL RESEARCH LETTERS
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/260250
推荐引用方式 GB/T 7714	Ning, Wen-Xiao,Zan, Jin-Bo,Yang, Sheng-Li,et al. A Combined Rock Magnetic and Meteorological Investigation of the Precipitation Boundary Across the Tibetan Plateau[J]. 中国科学院青藏高原研究所,2021,48(18).
APA	Ning, Wen-Xiao.,Zan, Jin-Bo.,Yang, Sheng-Li.,Fang, Xiao-Min.,Shen, Miao-Miao.,...&Wang, Shu-Wen.(2021).A Combined Rock Magnetic and Meteorological Investigation of the Precipitation Boundary Across the Tibetan Plateau.GEOPHYSICAL RESEARCH LETTERS,48(18).
MLA	Ning, Wen-Xiao,et al."A Combined Rock Magnetic and Meteorological Investigation of the Precipitation Boundary Across the Tibetan Plateau".GEOPHYSICAL RESEARCH LETTERS 48.18(2021).