干旱区生态环境知识资源中心(Arid): Why does a decrease in cloud amount increase terrestrial evapotranspiration in a monsoon transition zone?

Arid

DOI	10.1088/1748-9326/ad3569
	Why does a decrease in cloud amount increase terrestrial evapotranspiration in a monsoon transition zone?
	Liu, Wenhui; Yue, Ping; Wu, Xianghua; Li, Junjun; Shao, Naifu; Zhu, Bin; Lu, Chunsong
通讯作者	Lu, CS
来源期刊	ENVIRONMENTAL RESEARCH LETTERS
ISSN	1748-9326
出版年	2024
卷号	19 期号:4
英文摘要	Terrestrial evapotranspiration plays a critical role in drought monitoring and water resource management. Changes in evapotranspiration are significantly influenced by cloud-related precipitation and radiation effects. However, the impact of cloud amount (CA) on evapotranspiration through its influence on precipitation remains uncertain, especially in the transition zone affected by the East Asian summer monsoon (EASM), which limits the understanding of the water cycle. Therefore, this study deeply explores the impact of CA on evapotranspiration and its potential physical mechanisms in Northwest China. The results show that the correlation between 31-year average evapotranspiration and CA is negative only in the semi-arid region and is positive in other climatic regions of Northwest China. This unique negative correlation is related to the change of precipitation pattern in the semi-arid region caused by the weak EASM. Smaller CA in weak monsoons results in more short-wave radiation reaching the surface, larger sensible heat, and weaker convective inhibition. Consequently, the proportion of convective clouds (CCs) increases and precipitation from these CCs enhances evapotranspiration. Less CA increases evapotranspiration and potentially exacerbates aridity in the semi-arid region of Northwest China. These results emphasize the role of cloud type in evapotranspiration. It is well known that global warming can change cloud type with more CCs. Therefore, this study sheds new light on evapotranspiration change under global warming.
英文关键词	evapotranspiration cloud amount cloud type precipitation East Asian summer monsoon the semi-arid region
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:001193172900001
WOS关键词	SOIL-MOISTURE ; RIVER-BASIN ; PRECIPITATION ; VARIABILITY ; EVAPORATION ; TREND
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/403640
推荐引用方式 GB/T 7714	Liu, Wenhui,Yue, Ping,Wu, Xianghua,et al. Why does a decrease in cloud amount increase terrestrial evapotranspiration in a monsoon transition zone?[J],2024,19(4).
APA	Liu, Wenhui.,Yue, Ping.,Wu, Xianghua.,Li, Junjun.,Shao, Naifu.,...&Lu, Chunsong.(2024).Why does a decrease in cloud amount increase terrestrial evapotranspiration in a monsoon transition zone?.ENVIRONMENTAL RESEARCH LETTERS,19(4).
MLA	Liu, Wenhui,et al."Why does a decrease in cloud amount increase terrestrial evapotranspiration in a monsoon transition zone?".ENVIRONMENTAL RESEARCH LETTERS 19.4(2024).