气候变化领域集成服务门户(CCPortal): Spatial patterns of wet season precipitation vertical gradients on the Tibetan Plateau and the surroundings

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DOI	10.1038/s41598-017-05345-6
	Spatial patterns of wet season precipitation vertical gradients on the Tibetan Plateau and the surroundings
	Cuo, Lan; Zhang, Yongxin
通讯作者	Cuo, L (通讯作者)
发表日期	2017
ISSN	2045-2322
卷号	7
英文摘要	The Tibetan Plateau and the surrounding (TPS) with its vast land mass and high elevation affects regional climate and weather. The TPS is also the headwater of 9 major Asian rivers that provide fresh water for 1.65 billion people and many ecosystems, with wet season (May-September) precipitation being the critical component of the fresh water. Using station observations, ERA-Interim and MERRA2 reanalysis, we find that wet season precipitation displays vertical gradients (i.e., changes with elevation) that vary within the region on the TPS. The decrease of precipitation with elevation occurs in the interior TPS with elevation larger than 4000 m, little or no change over the southeastern TPS, and increase elsewhere. The increase of precipitation with elevation is caused by increasing convective available potential energy (CAPE) and decreasing lifting condensation level (LCL) with elevation overwhelming the effects of decreasing total column water vapor (TCWV) with elevation. The decreasing precipitation with elevation is due to the combined effects of increasing LCL and decreasing TCWV. LCL and CAPE play a more important role than TCWV in determining the spatial patterns. These findings are important for hydrology study in observation scarce mountainous areas, water resources and ecosystem managements in the region.
关键词	ASIAN SUMMER MONSOON CLIMATE-CHANGE POSSIBLE MECHANISMS VARIABILITY MOISTURE REANALYSIS EVOLUTION HIMALAYA HEAT
语种	英语
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:000405172600024
来源期刊	SCIENTIFIC REPORTS
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/258992
推荐引用方式 GB/T 7714	Cuo, Lan,Zhang, Yongxin. Spatial patterns of wet season precipitation vertical gradients on the Tibetan Plateau and the surroundings[J]. 中国科学院青藏高原研究所,2017,7.
APA	Cuo, Lan,&Zhang, Yongxin.(2017).Spatial patterns of wet season precipitation vertical gradients on the Tibetan Plateau and the surroundings.SCIENTIFIC REPORTS,7.
MLA	Cuo, Lan,et al."Spatial patterns of wet season precipitation vertical gradients on the Tibetan Plateau and the surroundings".SCIENTIFIC REPORTS 7(2017).