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DOI	10.1016/j.atmosres.2020.105148
	Dominant patterns of dryness/wetness variability in the Huang-Huai-Hai River Basin and its relationship with multiscale climate oscillations
	Hu W.; She D.; Xia J.; He B.; Hu C.
发表日期	2021
ISSN	0169-8095
卷号	247
英文摘要	The understanding of dryness/wetness variability and its causes is vital for better water resources management, especially in precipitation deficit regions. This study assesses the behavior and potential risk of summer meteorological dryness/wetness, characterized by the Standardized Precipitation Evapotranspiration Index (SPEI), in the semiarid Huang-Huai-Hai (HHH) River Basin in northern China using Precipitation (P) and Potential Evapotranspiration (ET0) data of 186 stations during 1960–2017. The dominant patterns of dryness/wetness variability in the HHH river basin and the connections with atmospheric circulation and multiscale climate oscillations are also detected. The results show that (1) a general wetting trend can be detected in the HHH during summer using the rank-based nonparametric Mann-Kendall test, which is largely related to the increase in summer P and decrease in summer ET0, and the trends in summer SPEI based dryness/wetness are more sensitive to the changes in ET0 than in P; (2) the patterns of dryness/wetness variability over the HHH river basin can be dominantly represented by three leading Empirical Orthogonal Function (EOF) modes, which are strongly influenced by large-scale atmospheric circulations, such as the excessive (insufficient) precipitation, upward (downward) vertical motion and moisture convergence (divergence); and (3) the multiscale climate modes have significant effects on the dryness/wetness variability, which confirms the interactions between multiple low-frequency oscillations and the meteorological processes in the HHH river basin. The results of this study will be beneficial for water resources management, drought/flood forecast, and preparations for potential drought/flood hazards in the HHH River Basin and will also be a valuable reference for other arid and semiarid areas. © 2020 Elsevier B.V.
英文关键词	Atmospheric circulation; Climate modes; Dryness/wetness variability; Huang-Huai-Hai River basin; SPEI
语种	英语
scopus关键词	Climatology; Drought; Evapotranspiration; Orthogonal functions; Risk assessment; Watersheds; Arid and semi-arid areas; Atmospheric circulation; Empirical Orthogonal Function; Low frequency oscillations; Moisture convergence; Potential evapotranspiration; Precipitation deficits; Water resources management; Rivers; arid region; atmospheric circulation; climate oscillation; climate variation; drought; evapotranspiration; flooding; precipitation assessment; rainfall; regional climate; river basin; semiarid region; summer; trend analysis; water resource; China; North China Plain
来源期刊	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/141767
作者单位	State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan, 430072, China; State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China; Hubei Key Laboratory of Water System Science for Sponge City Construction, Wuhan University, Wuhan, 430072, China
推荐引用方式 GB/T 7714	Hu W.,She D.,Xia J.,et al. Dominant patterns of dryness/wetness variability in the Huang-Huai-Hai River Basin and its relationship with multiscale climate oscillations[J],2021,247.
APA	Hu W.,She D.,Xia J.,He B.,&Hu C..(2021).Dominant patterns of dryness/wetness variability in the Huang-Huai-Hai River Basin and its relationship with multiscale climate oscillations.Atmospheric Research,247.
MLA	Hu W.,et al."Dominant patterns of dryness/wetness variability in the Huang-Huai-Hai River Basin and its relationship with multiscale climate oscillations".Atmospheric Research 247(2021).