干旱区生态环境知识资源中心(Arid): Spatiotemporal Variation of Actual Evapotranspiration and Its Relationship with Precipitation in Northern China under Global Warming

Arid

DOI	10.3390/rs14184554
	Spatiotemporal Variation of Actual Evapotranspiration and Its Relationship with Precipitation in Northern China under Global Warming
	Su, Tao; Sun, Siyuan; Wang, Shuting; Xie, Dexiao; Li, Shuping; Huang, Bicheng; Ma, Qianrong; Qian, Zhonghua; Feng, Guolin; Feng, Taichen
通讯作者	Feng, TC
来源期刊	REMOTE SENSING
EISSN	2072-4292
出版年	2022
卷号	14 期号:18
英文摘要	The analysis of actual evapotranspiration (ETa) changes is of great significance for the utilization and allocation of water resources. In this study, ETa variability in northern China (aridity index < 0.65) is investigated based on the average of seven datasets (GLEAM, GLASS, a complementary relationship-based dataset, CRA-40, MERRA2, JRA-55, and ERA5-Land). The results show that ETa increases significantly from 1982 to 2017. Limited by water supply, ETa is significantly correlated with precipitation (R = 0.682), whereas the increase in precipitation is insignificant (p = 0.151). Spatially, the long-term trend of ETa is also not completely consistent with that of precipitation. According to a singular value decomposition (SVD) analysis, the trend of ETa is mainly related to the first four leading SVD modes. Homogeneous correlation patterns indicate that more precipitation generally leads to high ETa; however, this relationship is modulated by other factors. Overall, positive potential evapotranspiration anomalies convert more surface water into ETa, resulting in a higher increase in ETa than in precipitation. Specifically, ETa in the northern Tibetan Plateau is associated with meltwater generated by rising temperatures, and ETa in the Badain Jaran Desert is highly dependent on the wet-day frequency. Under global warming, the inconsistency between ETa and precipitation changes has a great impact on water resources in northern China.
英文关键词	actual evapotranspiration precipitation drylands northern China global warming potential evapotranspiration
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:000857140000001
WOS关键词	TERRESTRIAL EVAPOTRANSPIRATION ; CLIMATE-CHANGE ; ARID REGION ; EVAPORATION ; TRENDS ; BASIN ; LAND
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/394201
推荐引用方式 GB/T 7714	Su, Tao,Sun, Siyuan,Wang, Shuting,et al. Spatiotemporal Variation of Actual Evapotranspiration and Its Relationship with Precipitation in Northern China under Global Warming[J],2022,14(18).
APA	Su, Tao.,Sun, Siyuan.,Wang, Shuting.,Xie, Dexiao.,Li, Shuping.,...&Feng, Taichen.(2022).Spatiotemporal Variation of Actual Evapotranspiration and Its Relationship with Precipitation in Northern China under Global Warming.REMOTE SENSING,14(18).
MLA	Su, Tao,et al."Spatiotemporal Variation of Actual Evapotranspiration and Its Relationship with Precipitation in Northern China under Global Warming".REMOTE SENSING 14.18(2022).