气候变化领域集成服务门户(CCPortal): The Mechanism of Increasing Summer Water Vapor Over the Tibetan Plateau

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DOI	10.1029/2020JD034166
	The Mechanism of Increasing Summer Water Vapor Over the Tibetan Plateau
	He, Yongli; Tian, Wenlong; Huang, Jianping; Wang, Guodong; Ren, Yu; Yan, Hongru; Yu, Haipeng; Guan, Xiaodan; Hu, Huancui
通讯作者	Huang, JP (通讯作者)，Lanzhou Univ, Coll Atmospher Sci, Minist Educ, Key Lab Semiarid Climate Change, Lanzhou, Gansu, Peoples R China. ; Huang, JP (通讯作者)，Collaborat Innovat Ctr Western Ecol Safety, Lanzhou, Peoples R China.
发表日期	2021
ISSN	2169-897X
EISSN	2169-8996
卷号	126 期号:10
英文摘要	Rapid warming over the Tibetan Plateau (TP) has been associated with an increasing trend in atmospheric water vapor content, which is critical for recharging the Asian water tower. However, the mechanism associated with the wetting phenomenon remains unclear. Long-term changes in moisture balance and precipitation (PRE) recycling processes are investigated using the ERA5 reanalysis from 1979 to 2019. The increasing trend over TP is mainly due to the summer water vapor trend with significantly increases over the western TP. Based on the moisture balance analysis, it is found that PRE, evaporation, and the convergence of moisture are all increasing over the western TP but decreasing over the eastern TP. Based on the dynamical PRE recycling model, the results suggest that both internal and external cycles contributes to the wetting over TP, with 63.87% and 36.13% contributions respectively. Further analysis found that the atmospheric heating source is also increasing over the western TP, which could shift the moisture transportation from east to west at the southern boundary of TP. The increasing moisture convergence could enhance PRE, and the enhanced latent heating in the mid-atmosphere can further induced moisture convergence, which forms a positive feedback. However, an opposite situation occurred over the eastern TP. The internal and external cycle of the water cycle can stimulate (suppress) each other through PRE over the western (eastern) TP. This mechanism linked the changes in the PRE recycling and atmospheric circulation, and induced the increasing trend over TP in summer.
关键词	ATMOSPHERIC MOISTURE PRECIPITATION ENERGY MIDDLE CYCLE
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:000656960400008
来源期刊	JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/255054
作者单位	[He, Yongli; Tian, Wenlong; Huang, Jianping; Wang, Guodong; Ren, Yu; Yan, Hongru; Guan, Xiaodan] Lanzhou Univ, Coll Atmospher Sci, Minist Educ, Key Lab Semiarid Climate Change, Lanzhou, Gansu, Peoples R China; [He, Yongli; Huang, Jianping] Collaborat Innovat Ctr Western Ecol Safety, Lanzhou, Peoples R China; [Yu, Haipeng] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Land Surface Proc & Climate Change Cold &, Lanzhou, Gansu, Peoples R China; [Hu, Huancui] Pacific Northwest Natl Lab, Atmospher Sci & Global Change Div, Richland, WA 99352 USA
推荐引用方式 GB/T 7714	He, Yongli,Tian, Wenlong,Huang, Jianping,et al. The Mechanism of Increasing Summer Water Vapor Over the Tibetan Plateau[J]. 中国科学院西北生态环境资源研究院,2021,126(10).
APA	He, Yongli.,Tian, Wenlong.,Huang, Jianping.,Wang, Guodong.,Ren, Yu.,...&Hu, Huancui.(2021).The Mechanism of Increasing Summer Water Vapor Over the Tibetan Plateau.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,126(10).
MLA	He, Yongli,et al."The Mechanism of Increasing Summer Water Vapor Over the Tibetan Plateau".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 126.10(2021).