OPTIMIZED SITE SELECTION FOR RAIN GAGE NETWORKS BASED ON ANNUAL AND MONTHLY RAINFALL

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RAHIMI BONDARABADI S.; SAGHAFIAN B.

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Journal: IRANIAN JOURNAL OF WATERSHED MANAGEMENT SCIENCE AND ENGINEERING Year:2010 | Volume:4 | Issue:12 Page(s): 27-36

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Title

OPTIMIZED SITE SELECTION FOR RAIN GAGE NETWORKS BASED ON ANNUAL AND MONTHLY RAINFALL

Author(s)

RAHIMI BONDARABADI S. | SAGHAFIAN B. | Issue Writer Certificate

Keywords

OPTIMIZATIONQ2

SITE SELECTIONQ1

RAIN GAGE NETWORKQ3

KRIGINGQ3

ESTIMATION VARIANCE AND EXTRAPOLATIONQ3

Abstract

Estimation of rainfall spatial distribution is an important step in water resources studies. Preliminary assessment of existing RAIN GAGE NETWORKs show that the spatial distribution of the gages is not suitable as many are just located in populated areas. OPTIMIZATION of rain gage locations can improve the accuracy of water balance studies. Several methods have been proposed for such tasks. KRIGING is a geostatistical method which can estimate the variance error based on a pre-determined semivariogram with no reliance on historical record. One can therefore apply KRIGING method to estimate the reduction in error variance due to any change in the network such as addition of a new gage or moving an existing gage. In this paper, the objective is to optimize gage locations based on error variance and topography of the region. This is done such that no extra cost is incurred; i.e. only omission or moving the stations is allowed. The results indicated that the number and the network structure is sufficient for estimation of rainfall distribution in dry months. However, in case of wet months and the annual rainfall, moving some of the stations is necessary. In all, 17 stations may be moved to reduce the average error by 10 percent. It must be noted that the error is quite high in extrapolation regions, as expected.

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APA: Copy

RAHIMI BONDARABADI, S., & SAGHAFIAN, B.. (2010). OPTIMIZED SITE SELECTION FOR RAIN GAGE NETWORKS BASED ON ANNUAL AND MONTHLY RAINFALL. IRANIAN JOURNAL OF WATERSHED MANAGEMENT SCIENCE AND ENGINEERING, 4(12), 27-36. SID. https://sid.ir/paper/134863/en

Vancouver: Copy

RAHIMI BONDARABADI S., SAGHAFIAN B.. OPTIMIZED SITE SELECTION FOR RAIN GAGE NETWORKS BASED ON ANNUAL AND MONTHLY RAINFALL. IRANIAN JOURNAL OF WATERSHED MANAGEMENT SCIENCE AND ENGINEERING[Internet]. 2010;4(12):27-36. Available from: https://sid.ir/paper/134863/en

IEEE: Copy

S. RAHIMI BONDARABADI, and B. SAGHAFIAN, “OPTIMIZED SITE SELECTION FOR RAIN GAGE NETWORKS BASED ON ANNUAL AND MONTHLY RAINFALL,” IRANIAN JOURNAL OF WATERSHED MANAGEMENT SCIENCE AND ENGINEERING, vol. 4, no. 12, pp. 27–36, 2010, [Online]. Available: https://sid.ir/paper/134863/en

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