气候变化领域集成服务门户(CCPortal): Linkage between ENSO phases and western US snow water equivalent

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DOI	10.1016/j.atmosres.2019.104827
	Linkage between ENSO phases and western US snow water equivalent
	Thakur B.; Kalra A.; Lakshmi V.; Lamb K.W.; Miller W.P.; Tootle G.
发表日期	2020
ISSN	0169-8095
卷号	236
英文摘要	Snow is a major source of water in the western US and has been observed showing variability posed by climate change. The snow variability of the region has been associated with the droughts affecting the societies relying on snow driven rivers. The current study evaluates the spatiotemporal variability of western US snow water equivalent (SWE) over 58 years (1961–2018) as a trend and a shift. The current study tests whether the SWE is consistent during El Niño – Southern Oscillation (ENSO) phases utilizing the Kolmogorov – Smirnov (KS) test. Trend analysis was performed on the SWE data of each ENSO phase. Shift analysis was performed in the entire time series of 58 years. Additionally, the trend in the SWE data was evaluated before and after shift years. Mann-Kendal and Pettit's tests were utilized for the detection of trend and shift respectively. The serial correlation was taken into account during the trend evaluation, while Thiel-Sen approach was used for the evaluation of the trend magnitude. The serial correlation in time series which is the potential cause of overestimation and underestimation of the trend evaluation was found to be absent in the SWE data. The results suggested a negative trend and a shift during the study period. The negative trend was absent during neutral years and present during El Niño and La Niña years. The trend magnitudes were maximum during La Niña years followed by those during El Niño years and the entire length of the data. It was also observed that if the presence of negative shift in the SWE was considered, then most of the stations did not show a significant trend before and after the occurrence of a shift. The current study can be utilized by water managers to develop future water management policies, plans, and strategies in the western United States. © 2020 Elsevier B.V.
英文关键词	Climate change; ENSO; Persistence; Shift; Snow water equivalent; Trend
学科领域	Atmospheric pressure; Climate change; Computational complexity; Lanthanum; Snow melting systems; Time series; Time series analysis; Water management; ENSO; Persistence; Shift; Snow water equivalent; Trend; Snow; climate change; correlation; El Nino-Southern Oscillation; persistence; snow water equivalent; spatial variation; temporal variation; trend analysis; United States
语种	英语
scopus关键词	Atmospheric pressure; Climate change; Computational complexity; Lanthanum; Snow melting systems; Time series; Time series analysis; Water management; ENSO; Persistence; Shift; Snow water equivalent; Trend; Snow; climate change; correlation; El Nino-Southern Oscillation; persistence; snow water equivalent; spatial variation; temporal variation; trend analysis; United States
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/120467
作者单位	Department of Civil and Environmental Engineering, Southern Illinois University, 1230 Lincoln Drive, Carbondale, IL, United States; Department of Engineering Systems and Environment, University of Virginia, 151 Engineers Way, Charlottesville, VA, United States; Department of Civil Engineering, California State Polytechnic University PomonaCA, United States; NOAA Colorado Basin River Forecast Center, Salt Lake City, UT, United States; Dept. of Civil, Construction and Environmental Engineering, Univ. of Alabama, Tuscaloosa, AL, United States
推荐引用方式 GB/T 7714	Thakur B.,Kalra A.,Lakshmi V.,et al. Linkage between ENSO phases and western US snow water equivalent[J],2020,236.
APA	Thakur B.,Kalra A.,Lakshmi V.,Lamb K.W.,Miller W.P.,&Tootle G..(2020).Linkage between ENSO phases and western US snow water equivalent.Atmospheric Research,236.
MLA	Thakur B.,et al."Linkage between ENSO phases and western US snow water equivalent".Atmospheric Research 236(2020).