Accuracy Analysis of Precipitation Regionalization Methods Based on Spatial Interpolation Techniques in Zayandeh-Rud River Basin

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Amini M. A.; Torkan G.; Eslamian S. S.; Zareian J.; Besalatpour A. A.

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Journal: Journal of Water and Soil Science Year:2019 | Volume:23 | Issue:1 Page(s): 17-30

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Title

Accuracy Analysis of Precipitation Regionalization Methods Based on Spatial Interpolation Techniques in Zayandeh-Rud River Basin

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Keywords

Dickey-Fuller testQ1

Shapiro–Wilk testQ1

Monthly precipitationQ1

Zayandeh-Rud River BasinQ1

Spatial Interpolation methodsQ1

Abstract

In the present study, we used 27 precipitation average monthly data from synoptic, climatologic, rain-guage and evaporative stations located in Zayandeh-Rud River Basin for the period of 1970-2014. Before interpolating, the missing data in the time series of each station was reconstructed by the normal ratio method. Also, for the data quality control, the Dickey-Fuller and Shapiro-Wilk tests were used to check the data stationarity and normality. Then, these data were interpolated by six interpolation methods including Inverse Distance Weighting, Natural Neighbor, Tension Spline, Regularized Spline, Ordinary Kriging and Universal Kriging; then each method was evaluated using the crossvalidation technique with MAE, MBE and RMSE indices. The results showed that among the Spatial Interpolation methods, Natural Neighbor method with MAE of 0. 24 had the best performance for interpolating precipitation among all of the methods. Also, among Ordinary Kriging, Universal Kriging, Spline and Inverse Distance Weighting methods, respectively, Exponential Kriging with MAE 0. 54, Quadratic Drift Kriging with MAE of 0. 5, Tension Spline with the MAE of 0. 54 and Inverse Distance Weighting with the power of 4 with MAE of 0. 57 had the least error compared to other IDW methods.

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APA: Copy

Amini, M. A., Torkan, G., Eslamian, S. S., Zareian, J., & Besalatpour, A. A.. (2019). Accuracy Analysis of Precipitation Regionalization Methods Based on Spatial Interpolation Techniques in Zayandeh-Rud River Basin. WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES), 23(1 ), 17-30. SID. https://sid.ir/paper/361127/en

Vancouver: Copy

Amini M. A., Torkan G., Eslamian S. S., Zareian J., Besalatpour A. A.. Accuracy Analysis of Precipitation Regionalization Methods Based on Spatial Interpolation Techniques in Zayandeh-Rud River Basin. WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES)[Internet]. 2019;23(1 ):17-30. Available from: https://sid.ir/paper/361127/en

IEEE: Copy

M. A. Amini, G. Torkan, S. S. Eslamian, J. Zareian, and A. A. Besalatpour, “Accuracy Analysis of Precipitation Regionalization Methods Based on Spatial Interpolation Techniques in Zayandeh-Rud River Basin,” WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES), vol. 23, no. 1 , pp. 17–30, 2019, [Online]. Available: https://sid.ir/paper/361127/en

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