干旱区生态环境知识资源中心(Arid): Climate variability in space-time variogram models of annual rainfall in arid regions

Arid

DOI	10.1007/s12517-019-4836-8
	Climate variability in space-time variogram models of annual rainfall in arid regions
	Subyani, Ali M.
通讯作者	Subyani, Ali M.
来源期刊	ARABIAN JOURNAL OF GEOSCIENCES
ISSN	1866-7511
EISSN	1866-7538
出版年	2019
卷号	12 期号:21
英文摘要	Global climate change affects weather patterns around the world. Rainfall variability, especially in arid regions, can increase or decrease drastically in the space and time domains. To determine the spatial and temporal continuity of rainfall phenomena, geostatistical models and variograms are key tools for estimating and modeling the space and time dependence in a data set. The basic steps in any regional modeling method involve obtaining the experimental variogram and fitting a model to the experimental variogram. Theoretical matching is performed for the experimental variogram considering the sill, nugget, and other features, which reflect the regional characteristics of the phenomena concerned. In this study, a product-sum space-time-standardized variogram procedure is proposed and used to identify the spatial and temporal structures of annual rainfall in the western part of Saudi Arabia. The standardized variogram is, in fact, the reduced scale of the original form without the loss of the characteristics of the underlying phenomena. The results of the space-time-standardized experimental and variogram models indicate that the average annual spatial variograms have a continuous structure based on an exponential model with a small nugget. The average annual temporal variograms have a continuous structure based on an exponential model with a large nugget. These results confirm the high variation in the rainfall pattern in the time domain and low variation in the spatial domain.
英文关键词	Variogram Rainfall Space and time Saudi Arabia
类型	Article
语种	英语
国家	Saudi Arabia
收录类别	SCI-E
WOS记录号	WOS:000492892800001
WOS关键词	GEOSTATISTICS ; INTERPOLATION
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
EI主题词	2019-11-01
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/310578
作者单位	King Abdulaziz Univ, Hydrogeol Dept, POB 80206, Jeddah 21589, Saudi Arabia
推荐引用方式 GB/T 7714	Subyani, Ali M.. Climate variability in space-time variogram models of annual rainfall in arid regions[J],2019,12(21).
APA	Subyani, Ali M..(2019).Climate variability in space-time variogram models of annual rainfall in arid regions.ARABIAN JOURNAL OF GEOSCIENCES,12(21).
MLA	Subyani, Ali M.."Climate variability in space-time variogram models of annual rainfall in arid regions".ARABIAN JOURNAL OF GEOSCIENCES 12.21(2019).

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