气候变化领域集成服务门户(CCPortal): Contributions of moisture sources to precipitation in the major drainage basins in the Tibetan Plateau

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DOI	10.1007/s11430-021-9890-6
	Contributions of moisture sources to precipitation in the major drainage basins in the Tibetan Plateau
	Li, Ying; Su, Fengge; Tang, Qiuhong; Gao, Hongkai; Yan, Denghua; Peng, Hui; Xiao, Shangbin
通讯作者	Su, FG (通讯作者)
发表日期	2022
ISSN	1674-7313
EISSN	1869-1897
起始页码	1088
结束页码	1103
卷号	65 期号:6
英文摘要	Tracking and quantifying the moisture sources of precipitation in different drainage basins in the Tibetan Plateau (TP) help to reveal basin-scale hydrological cycle characteristics under the interactions between the westerlies and Indian summer monsoon (ISM) systems and to improve our understanding on the mechanisms of water resource changes in the 'Asian Water Tower' under climate changes. Based on a Eulerian moisture tracking model (WAM-2) and three atmospheric reanalysis products (ERA-I, MERRA-2, and JRA-55), the contributions of moisture sources to the precipitation in six major sub-basins in the TP were tracked during an approximately 35-year period (1979/1980-2015). The results showed that in the upper Indus (UI), upper Tarim River (UT), and Qaidam Basin (QB), the moisture sources mainly extended westward along the mid-latitude westerlies to the western part of the Eurasian continent. In contrast, in the Brahmaputra (BR), inner TP (ITP), and the source area of three eastern rivers (TER, including the Nujiang River, Lancang River, and Yangtze River), the moisture sources extended both westward and southward, but mainly southward along the ISM. In winter and spring, all of the sub-basins were dominated by western moisture sources. In summer, the western sources migrated northward with the zonal movement of the westerlies, and simultaneously the southern sources of the BR, ITP, and TER expanded largely toward the Indian Ocean along the ISM. In autumn, the moisture sources of the UI, UT, and QB shrank to the western sources, and the moisture sources of the BR, ITP, and TER shrank to the central-southern TP and the Indian subcontinent. By quantifying the moisture contributions from multiple sources, we found that the terrestrial moisture dominated in all of the sub-basins, particularly in the UT and QB (62-73%). The oceanic contributions were relatively high in the UI (38-42 degrees%) and BR (38-41%). In winter, evaporation from the large western water bodies (such as the Mediterranean, Red Sea, and Persian Gulf) was significantly higher than that from the continental areas. This contributed to the peak (valley) values of the oceanic (terrestrial) moisture contributions to all of the sub-basins. In summer, the terrestrial moisture contributions to the UI, UT, and QB reached their annual maximum, but the abundant oceanic moisture transported by the ISM restrained the appearance of land source contribution peaks in the BR, ITP, and TER, resulting in almost equal moisture contributions in the BR from the ocean and land.
关键词	ATMOSPHERIC WATER TRANSPORT SUMMER PRECIPITATION STABLE-ISOTOPE ERA-INTERIM VAPOR VARIABILITY MODEL CYCLE SEASONALITY PERFORMANCE
英文关键词	Tibetan Plateau; Precipitation; Moisture sources; Westerlies; Indian summer monsoon; Local recycling
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000784027100001
来源期刊	SCIENCE CHINA-EARTH SCIENCES
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/260754
推荐引用方式 GB/T 7714	Li, Ying,Su, Fengge,Tang, Qiuhong,et al. Contributions of moisture sources to precipitation in the major drainage basins in the Tibetan Plateau[J]. 中国科学院青藏高原研究所,2022,65(6).
APA	Li, Ying.,Su, Fengge.,Tang, Qiuhong.,Gao, Hongkai.,Yan, Denghua.,...&Xiao, Shangbin.(2022).Contributions of moisture sources to precipitation in the major drainage basins in the Tibetan Plateau.SCIENCE CHINA-EARTH SCIENCES,65(6).
MLA	Li, Ying,et al."Contributions of moisture sources to precipitation in the major drainage basins in the Tibetan Plateau".SCIENCE CHINA-EARTH SCIENCES 65.6(2022).