Estimating the rainfall erosivity factor from monthly precipitation data in the Madrid Region (Spain)

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Title:Estimating the rainfall erosivity factor from monthly precipitation data in the Madrid Region (Spain)
Creators:
Hernando, David; davhernando at gmail dot com; Department of Civil Engineering – Transport, Technical University of Madrid, Profesor Aranguren 3, 28040 Madrid, Spain.
Romana, Manuel G.; Department of Civil Engineering – Transport, Technical University of Madrid, Profesor Aranguren 3, 28040 Madrid, Spain.
Journal or Publication Title:
Journal of Hydrology and Hydromechanics, 63, 1, pp. 55-62
Uncontrolled Keywords:rainfall erosivity, R-factor, Universal Soil Loss Equation, modified Fournier index, soil erosion

Abstract

The need for continuous recording rain gauges makes it difficult to determine the rainfall erosivity factor (Rfactor) of the Universal Soil Loss Equation in regions without good spatial and temporal data coverage. In particular, the R-factor is only known at 16 rain gauge stations in the Madrid Region (Spain). The objectives of this study were to identify a readily available estimate of the R-factor for the Madrid Region and to evaluate the effect of rainfall record length on estimate precision and accuracy. Five estimators based on monthly precipitation were considered: total annual rainfall (P), Fournier index (F), modified Fournier index (MFI), precipitation concentration index (PCI) and a regression equation provided by the Spanish Nature Conservation Institute (RICONA). Regression results from 8 calibration stations showed that MFI was the best estimator in terms of coefficient of determination and root mean squared error, closely followed by P. Analysis of the effect of record length indicated that little improvement was obtained for MFI and P over 5-year intervals. Finally, validation in 8 additional stations supported that the equation R = 1.05·MFI computed for a record length of 5 years provided a simple, precise and accurate estimate of the R-factor in the Madrid Region.

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Title:Estimating the rainfall erosivity factor from monthly precipitation data in the Madrid Region (Spain)
Translated title:Estimating the rainfall erosivity factor from monthly precipitation data in the Madrid Region (Spain)
Creators:
Hernando, David; davhernando at gmail dot com; Department of Civil Engineering – Transport, Technical University of Madrid, Profesor Aranguren 3, 28040 Madrid, Spain.
Romana, Manuel G.; Department of Civil Engineering – Transport, Technical University of Madrid, Profesor Aranguren 3, 28040 Madrid, Spain.
Uncontrolled Keywords:rainfall erosivity, R-factor, Universal Soil Loss Equation, modified Fournier index, soil erosion
Subjects:T Technology > TA Engineering (General). Civil engineering (General)
Divisions:Mathematics, Physics and Earth Sciences > Institute of Hydrodynamics > Journal of Hydrology and Hydromechanics
Journal or Publication Title:Journal of Hydrology and Hydromechanics
Volume:63
Number:1
Page Range:pp. 55-62
ISSN:0042-790X
Publisher:Institute of Hydrology of the Slovak Academy of Sciences and the Institute of Hydrodynamics of the Academy of Sciences of the Czech Republic
Related URLs:
URLURL Type
http://avi.lib.cas.cz/node/55Publisher
ID Code:8411
Item Type:Article
Deposited On:13 May 2015 19:23
Last Modified:13 May 2015 17:23

Citation

Hernando, David; Romana, Manuel G. (2015) Estimating the rainfall erosivity factor from monthly precipitation data in the Madrid Region (Spain). Journal of Hydrology and Hydromechanics, 63 (1). pp. 55-62. ISSN 0042-790X

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