Title: Spatio-temporal variations of extreme precipitation events over North Central of Vietnam
Authors: Tien Thanh Nguyen
Addresses: Department of Hydrometeorological Modelling and Forecasting, Thuyloi University, 175 Tay Son, Dong Da, Hanoi, Vietnam
Abstract: The study provides a qualitative source of gridded daily precipitation at high resolution of 5 km based on bias correction factors for Quang Binh, a province in North Central of Vietnam. The reproduced daily precipitation product, namely QBv1 is then evaluated with the station, station-based, satellite, reanalysis precipitation data. More specifically, understanding the spatial distribution of extreme precipitation events is fully interpreted. With this, it is firstly vial to analyse the accuracy of QBv1 product using the statistical indices of continuous and dichotomous. The results showed an excellent reproduction for daily precipitation of QBv1 product at high resolution. The extreme precipitation values are then calculated on the gridded precipitation product. It is illustrated extremely large amounts of precipitation defined by 99th percentile with 81.9 mm, 994.9 mm and 2,357.8 mm in a day, month and season, respectively. The maximum consecutive five-day precipitation can rise to over 1,600 mm.
Keywords: CHIRPS; ERA5_Land; Aphrodite-2; heavy precipitation; satellite precipitation; Quang Binh; extreme precipitation; Vietnam.
International Journal of Global Warming, 2021 Vol.23 No.2, pp.212 - 233
Received: 29 Apr 2020
Accepted: 05 Aug 2020
Published online: 08 Feb 2021 *