Optimization of the number of rain gage stations based on interpolation methods and principal components analysis in Iran

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Gerkani Nezhad Moshizi Zahra; TEIMOURI FATEMEH; BAZRAFSHAN OMMOLBANIN

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Journal: IRANIAN JOURNAL OF ECOHYDROLOGY Year:2017 | Volume:4 | Issue:3 Page(s): 897-910

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Title

Optimization of the number of rain gage stations based on interpolation methods and principal components analysis in Iran

Author(s)

Gerkani Nezhad Moshizi Zahra | TEIMOURI FATEMEH | BAZRAFSHAN OMMOLBANIN | Issue Writer Certificate

Keywords

OptimizationQ2

interpolationQ2

PCAQ2

ValidationQ2

synoptic stationsQ2

Abstract

Optimization of the number of synoptic stations in the estimation of rainfall is an important step in terms of reducing the maintenance cost and saving the data collection. The main objective of this study was to determine the optimal number of synoptic stations to estimate the amount of rainfall in Iran. Accordingly, the amount of rainfall of synoptic stations related to a common 14-year period was received from the National Weather Service and the performances of five different interpolation methods were evaluated. Based on the results of radial basis function (RBF), with a margin of error of 0. 63, this method was selected as the most appropriate method in fitting the data. Studies show that eliminating the synoptic stations in PCA method increases the estimation error of RMSE from 0. 48 to 0. 52 related given that all synoptic stations were used; moreover, in the radial basis function, interpolation method decreases from 0. 63 to 0. 55 which indicates the suitability of this method in the Optimization of synoptic stations. The results indicate that through removing 34 and 22 points from the network of synoptic stations in Iran respectively in the PCA method and interpolation method of radial basis, the resulting error will acceptable.

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APA: Copy

Gerkani Nezhad Moshizi, Zahra, TEIMOURI, FATEMEH, & BAZRAFSHAN, OMMOLBANIN. (2017). Optimization of the number of rain gage stations based on interpolation methods and principal components analysis in Iran. IRANIAN JOURNAL OF ECOHYDROLOGY, 4(3 ), 897-910. SID. https://sid.ir/paper/254192/en

Vancouver: Copy

Gerkani Nezhad Moshizi Zahra, TEIMOURI FATEMEH, BAZRAFSHAN OMMOLBANIN. Optimization of the number of rain gage stations based on interpolation methods and principal components analysis in Iran. IRANIAN JOURNAL OF ECOHYDROLOGY[Internet]. 2017;4(3 ):897-910. Available from: https://sid.ir/paper/254192/en

IEEE: Copy

Zahra Gerkani Nezhad Moshizi, FATEMEH TEIMOURI, and OMMOLBANIN BAZRAFSHAN, “Optimization of the number of rain gage stations based on interpolation methods and principal components analysis in Iran,” IRANIAN JOURNAL OF ECOHYDROLOGY, vol. 4, no. 3 , pp. 897–910, 2017, [Online]. Available: https://sid.ir/paper/254192/en

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