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DOI	10.1016/j.jhydrol.2023.129474
	Changes in streamflow statistical structure across the United States due to recent climate change
	Gupta, Abhinav; Carroll, Rosemary W. H.; Mckenna, Sean A.
通讯作者	Gupta, A
来源期刊	JOURNAL OF HYDROLOGY
ISSN	0022-1694
EISSN	1879-2707
出版年	2023
卷号	620
英文摘要	Changes in statistical structure (spectral properties) of streamflow across the USA due to climate change were studied for water years 1980-2013. The Fractionally differenced Autoregressive Integrated Moving Average (FARIMA) model was fit to the deseasonalized streamflow time series to model its statistical structure. FARIMA allows the separation of streamflow into low- (slowly varying) and high-frequency (fast varying) components. In this study, the changes in the contribution of various components to the total streamflow variance were analyzed. Further, the variables affecting these changes were identified using random forest and linear regression. Results show that in the snow-dominated watersheds, the contribution of low-frequency components to total streamflow variance decreased over the study period, and the contribution of high-frequency components increased. The changes in the snow-dominated watersheds were primarily driven by changes in precipitation statistics and changes in snowpack but also by changes in seasonal temperature statistics. Among the rain-driven watersheds, the contribution of high-frequency components generally increased in arid regions but decreased in humid regions. In both humid and arid rain-driven watersheds, increasing winter temperature appears to be responsible for the change in streamflow statistical structure. These results have consequences for the predictability of streamflow in the presence of climate change. Further, the analysis carried out in this study allowed us to understand the plausible changes in watershed hydrologic processes that affect streamflow without using processbased or conceptual models.
英文关键词	Streamflow Climate change FARIMA Spectral analysis Snow-dominated watersheds Rain-driven watersheds
类型	Article
语种	英语
开放获取类型	Green Submitted, hybrid
收录类别	SCI-E
WOS记录号	WOS:001054038200001
WOS关键词	WATER-CONTROLLED ECOSYSTEMS ; HYDROLOGIC PROCESSES ; ACTIVE-ROLE ; MOUNTAIN SNOWPACK ; RAINFALL ; TRENDS ; VEGETATION ; STRESS ; PLANTS ; SOIL
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/2XILL650/397395
推荐引用方式 GB/T 7714	Gupta, Abhinav,Carroll, Rosemary W. H.,Mckenna, Sean A.. Changes in streamflow statistical structure across the United States due to recent climate change[J],2023,620.
APA	Gupta, Abhinav,Carroll, Rosemary W. H.,&Mckenna, Sean A..(2023).Changes in streamflow statistical structure across the United States due to recent climate change.JOURNAL OF HYDROLOGY,620.
MLA	Gupta, Abhinav,et al."Changes in streamflow statistical structure across the United States due to recent climate change".JOURNAL OF HYDROLOGY 620(2023).