Arid
DOI10.1007/s12517-016-2576-6
Evaluation of rain gauge network in arid regions using geostatistical approach: case study in northern Oman
Haggag, Mohammed1,2; Elsayed, Ahmed A.2; Awadallah, Ayman G.2,3
Corresponding AuthorHaggag, Mohammed
JournalARABIAN JOURNAL OF GEOSCIENCES
ISSN1866-7511
EISSN1866-7538
Year Published2016
Volume9Issue:9
Abstract in English

A geostatistical approach based on ordinary kriging is presented for the evaluation and the augmentation of an existing rain gauge network. The evaluation is based on estimating the percentage of the area that achieves a targeted level of acceptable accuracy. The variances of kriging estimation erros at un-gauged locations were assumed to be normally distributed. Kriging estimation erros with a probability that equals to or exceeds a given threshold value of acceptance probability were assumed to have satisfactory accuracies. The percentage of the area that achieved the targeted probability of acceptance is delineated and used to judge the overall performance of the existing rain gauge network. A study area in northern Oman located in Sohar governorate is selected as the pilot case. The area has 34 rain gauges and it is characterized by a terrain surface that varies from coastal plain to mountains. For a threshold value of 0.85, and 0.90 of acceptance probability, the existing network achieved area of acceptable probability of 88.71 and 77.72 %, respectively. For a success criterion of 80 %, the existing rain gauge network indicated acceptable performance for acceptance probability threshold of 0.85 and inadequate performance is noticed in the case of probability threshold of 0.90, which necessitated further network augmentation. A sequential algorithm for ranking and prioritization of the existing rain gauges is used to classify the existing rain gauges into base and non-base rain gauges. The base rain gauge network for mean annual rainfall comprised about 29 of the existing rain gauges. The identified non-base rain gauges were sequentially relocated to achieve higher levels of percentage of area with acceptable accuracy. The percentage of area with acceptable accuracy increased from 88.71 % for the original rain gauge network to about 94.51 % for the augmented network by adding four rain gages at probability acceptance threshold of 0.85. It also increased from 77.72 % for the existing network to 90.50 % for the augmented rain gauge network at acceptance threshold of 0.9.


Keyword in EnglishRain gauge network Geostatistics Ordinary kriging Sequential algorithm Semivariogram Oman
SubtypeArticle
Language英语
CountryEgypt
Indexed BySCI-E
WOS IDWOS:000380137800015
WOS KeywordOPTIMAL SELECTION ; AREAL RAINFALL ; PRECIPITATION ; INTERPOLATION ; TEMPERATURE ; ELEVATION ; DENSITY ; DESIGN ; MODELS ; SCALE
WOS SubjectGeosciences, Multidisciplinary
WOS Research AreaGeology
Document Type期刊论文
Identifierhttp://119.78.100.177/qdio/handle/2XILL650/191453
Affiliation1.Cairo Univ, Dept Irrigat & Hydraul, Fac Engn, Giza 12613, Egypt;
2.Dar Al Handasah Shair & Partners, Giza, Egypt;
3.Fayoum Univ, Dept Civil Engn, Fac Engn, Al Fayyum, Egypt
Recommended Citation
GB/T 7714
Haggag, Mohammed,Elsayed, Ahmed A.,Awadallah, Ayman G.. Evaluation of rain gauge network in arid regions using geostatistical approach: case study in northern Oman[J],2016,9(9).
APA Haggag, Mohammed,Elsayed, Ahmed A.,&Awadallah, Ayman G..(2016).Evaluation of rain gauge network in arid regions using geostatistical approach: case study in northern Oman.ARABIAN JOURNAL OF GEOSCIENCES,9(9).
MLA Haggag, Mohammed,et al."Evaluation of rain gauge network in arid regions using geostatistical approach: case study in northern Oman".ARABIAN JOURNAL OF GEOSCIENCES 9.9(2016).
Files in This Item: Download All
File Name/Size DocType Version Access License
Evaluation of rain g(4032KB)期刊论文出版稿开放获取CC BY-NC-SAView Download
Related Services
Recommend this item
Bookmark
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Haggag, Mohammed]'s Articles
[Elsayed, Ahmed A.]'s Articles
[Awadallah, Ayman G.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Haggag, Mohammed]'s Articles
[Elsayed, Ahmed A.]'s Articles
[Awadallah, Ayman G.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Haggag, Mohammed]'s Articles
[Elsayed, Ahmed A.]'s Articles
[Awadallah, Ayman G.]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Evaluation of rain gauge network in arid regions using geostatistical approach case study in northern Oman.pdf
Format: Adobe PDF
This file does not support browsing at this time

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.