干旱区生态环境知识资源中心(Arid): Time Series Analysis of Monthly and Annual Precipitation in The State of Texas Using High-Resolution Radar Products

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DOI	10.3390/w13070982
	Time Series Analysis of Monthly and Annual Precipitation in The State of Texas Using High-Resolution Radar Products
	Ghebreyesus, Dawit; Sharif, Hatim O.
通讯作者	Ghebreyesus, D (corresponding author), Univ Texas San Antonio, Dept Civil & Environm Engn, San Antonio, TX 78249 USA.
来源期刊	WATER
EISSN	2073-4441
出版年	2021
卷号	13 期号:7
英文摘要	Precipitation is the main source for replenishing groundwater stored in aquifers for a myriad of beneficial purposes, especially in arid and semi-arid regions. A significant portion of the municipal and agricultural water demand is satisfied through groundwater withdrawals in Texas. These withdrawals have to be monitored and regulated to be in balance with the recharge amount from precipitation in order to ensure water security. The main goal of this study is to understand the spatio-temporal variability of precipitation in the 21st century using high spatial resolution stage-IV radar data over the state of Texas and examine some climatic controls behind this variability. The results will shed light on the trends of precipitation and hence will contribute to improving water resources management strategies and policies. Pettit's test and Standard Normal Homogeneity Test (SNHT), tools for detecting change-point in the monthly precipitation, suggested change-points have occurred across the state around the years 2013 and 2014. The test for the homogeneity of the data before and after 2013 revealed that, in over 64% of the state, the precipitation means were significantly different. The Panhandle region (northern part) is the only part of the state that did not show a significant difference in the mean precipitation before and after 2013. Theil-Sen's slope test, Correlated Seasonal Mann-Kendall Test, and Cox and Stuart Trend Test all indicated that there were no significant trends in the monthly precipitation after 2013 in over 98% of the area of the state. Texas precipitation was found to be influenced significantly by the El Nino-Southern Oscillation (ENSO) and the Pacific Decadal Oscillation (PDO). A significant correlation in more than 82% and 60% of the state was found with ENSO at two-month and with PDO at four-month lag, respectively.
英文关键词	precipitation NEXt-generation Weather RADar (NEXRAD) Texas water resources
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:000638938300001
WOS类目	Environmental Sciences ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/351954
作者单位	[Ghebreyesus, Dawit; Sharif, Hatim O.] Univ Texas San Antonio, Dept Civil & Environm Engn, San Antonio, TX 78249 USA
推荐引用方式 GB/T 7714	Ghebreyesus, Dawit,Sharif, Hatim O.. Time Series Analysis of Monthly and Annual Precipitation in The State of Texas Using High-Resolution Radar Products[J],2021,13(7).
APA	Ghebreyesus, Dawit,&Sharif, Hatim O..(2021).Time Series Analysis of Monthly and Annual Precipitation in The State of Texas Using High-Resolution Radar Products.WATER,13(7).
MLA	Ghebreyesus, Dawit,et al."Time Series Analysis of Monthly and Annual Precipitation in The State of Texas Using High-Resolution Radar Products".WATER 13.7(2021).