12. Applying artificial neural network model in calculating rainfall rate from radar reflectivity in Thua Thien - Hue province

Abstract

In Viet Nam, the weather radar system has been put into operation and used to monitor and forecast rainfall since the 2000s across the country. Rainfall estimated from radar reflectivity by empirical formulas has been applied by many authors to many different regions, but the results obtained are limited due to the experimental formula with simple coefficients, does not reflect well the nonlinear relationship between these two quantities. This paper presents the use of artificial neural network model to find the relationship between rainfall rate and radar reflectivity and compares it with the method using the empirical formulas. The obtained results show the better applicability of this method compared to the method using the empirical formula.