Regional analysis of maximum rainfall using L-moment and TL-moment: a comparative case study for the north East India
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Abstract
In this study it has been tried to develop a suitable model for maximum rainfall frequency analysis of the North East India using best fit probability distribution. The methods of L-moment have been employed for estimation of five probability distributions, namely Generalized extreme value (GEV), Generalized Logistic (GLO), Pearson type 3 (PE3), 3 parameter Log normal (LN3) and Generalized Pareto (GPA) distributions. The methods TL-moment have been used for estimating the parameters of three probability distributions namely Generalized extreme value (GEV), Generalized Logistic (GLO) and Generalized Pareto (GPA) distributions. PE3 distribution has been selected as the best fit distribution using L-moment and GPA distribution using TL-moment method. Relative root mean square error (RRMSE) and Relative Bias (RBIAS) are employed to compare between the results found from L-moment and TL-moment analysis. It is found that PE3 distribution designated by L-moment method is the most suitable and the best fit distribution for rainfall frequency analysis of the North East India. Also the L-moment method is significantly more efficient than TL-moment.
Article Details
Article Details
L-moment, TL-moments, Probability distribution
Deka, S., Borah, M. and Kakaty, S.C. (2011). Statistical analysis of annual maximum rainfall in North-East India: an application of LH-moments. Theor. Appl. Climatol.,104(1):111-122.
Elamir, E.A.H. and Seheult, A.H., (2003). Trimmed L-moments. Comput. Statist. Data Anal. 43: 299–314.
Hosking, J.R.M. and Wallis, J.R. (1993). Some statistics useful in regional frequency analysis. Water Resour. Res. 29(2):271-281.
Hosking, J.R.M. and Wallis, J.R. (1997). Regional frequency analysis- An approach based on L-moments. Cambridge University Press, New York.
Ogunlela, A.O.(2001). Stochastic Analysis of Rainfall events in Ilorin, Nigeria. Journal of Agricultural Research and Development. 1:39-50.
Meshgi, A. and Khalili, D. (2009). Comprehensive evaluation of regional flood frequency analysis by L- and LH-moments. I. A re-visit to regional homogeneity. Stoch. Environ. Res. Risk Assess. 23:119–135.
Shabri A.B., Doud, Z. M. And Ariff, N.M. (2011). Regional analysis of annual maximum rainfall using TL-moments method. Theor. Appl. Climatol.,104:561–570.
Trefry, C., Watkins, D., Jr. and Johnson, D.(2005). Regional rainfall frequency analysis for the state of Michigan. Journal of Hydrolologic Engineering. 10(6):437-449.
Tukey, J.W. (1977). Exploratory data analysis. Addision-Wesley, Reading.
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