干旱区生态环境知识资源中心(Arid): Decomposition-based teleconnection between monthly streamflow and global climatic oscillation

Arid

DOI	10.1016/j.jhydrol.2021.126651
	Decomposition-based teleconnection between monthly streamflow and global climatic oscillation
	Shi, Xiaoyu; Huang, Qiang; Li, Kailong
通讯作者	Huang, Q (corresponding author), 5 South Jinhua Rd, Xian, Shaanxi, Peoples R China.
来源期刊	JOURNAL OF HYDROLOGY
ISSN	0022-1694
EISSN	1879-2707
出版年	2021
卷号	602
英文摘要	Hydrometeorological teleconnections play a vital role in hydrological processes, as they can reflect the influence of large-scale atmospheric circulations. Understanding and accessing such teleconnections can help reveal the hydrometeorological phenomenon and its associated mechanisms. Therefore, a decomposition-based teleconnection framework (DBTF) is developed to identify the hydrological processes related to the tele-connections under climate change. It consists of three modules, namely, hydrological series decomposition, teleconnection patterns decomposition, and attribution analysis. Specifically, the streamflows are separated into the stationary and nonstationary components using the SSA decomposition technique. Then, the teleconnection patterns (ENSO, AO, PDO, and Sunspots) are decomposed into multi-layer signals by the EEMD decomposition technique. The multiple complex correspondences of different components from hydrological and climate variables are studied by factorial analysis, wavelet coherence transformation, maximum information coefficient, and the partial autocorrelation coefficients. Basins from the humid, semi-humid and semiarid, and arid climate zones are estimated by the framework. The results show that: (1) high-frequency of teleconnection patterns has the highest correlation with the stationary components of streamflow, while low-frequency and trend have the most considerable association with the nonstationary components; (2) the stationary components of streamflow show more pronounced correlations with the teleconnection patterns than the nonstationary components; (3) tele-connection patterns demonstrate more substantial on the decomposed components than the raw streamflow. The contribution is to provide new insight into mechanisms in the effects of hydrometeorological teleconnections on hydrological variations.
英文关键词	Physical interactions Decomposition techniques Hydrometeorological teleconnection Hydrological variation Factorial analysis WCT
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000704794400004
WOS关键词	RAINFALL EROSIVITY
WOS类目	Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Engineering ; Geology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/363926
作者单位	[Shi, Xiaoyu; Huang, Qiang] Xian Univ Technol, State Key Lab Ecohydraul Northwest Arid Reg, Xian 710048, Peoples R China; [Li, Kailong] Univ Regina, Regina, SK, Canada
推荐引用方式 GB/T 7714	Shi, Xiaoyu,Huang, Qiang,Li, Kailong. Decomposition-based teleconnection between monthly streamflow and global climatic oscillation[J],2021,602.
APA	Shi, Xiaoyu,Huang, Qiang,&Li, Kailong.(2021).Decomposition-based teleconnection between monthly streamflow and global climatic oscillation.JOURNAL OF HYDROLOGY,602.
MLA	Shi, Xiaoyu,et al."Decomposition-based teleconnection between monthly streamflow and global climatic oscillation".JOURNAL OF HYDROLOGY 602(2021).