Rainfall characteristics in Vinh city, Nghe An province

Abstract

Analysis of rainfall characteristics in Vinh city, Nghe An province plays an important part in forecasting/warning urban flood. The purpose of this study is to analyze rainfall variation according to rainy season, rainy day and rainy hour, rain characteristics according to rain level and intensity of rain, and explain the mechanism of rainfall in the study area. The trend analysis of Mann-Kendall, classification of rainfall level by percentile, statistical method were used. The results showed that, rainfall in Vinh station tends to increase from August, maximum in September and October, then decrease in the other months. Rainfall in Vinh station tends to increase from 19pm to 9am the next morning and this trend is not most obvious in the 2h - 12h period and more obvious in the 1h -24h period.