Ensemble Climate Projection for Hydro-Meteorological Drought over a river basin in Central Highland, Vietnam

Abstract

This study focuses on the Hydro-Meteorological Drought assessments by Ensemble Climate Projections from a regional climate model (Weather Research and Forecasting, WRF) that downscaled 3 Global Climate Models under a baseline period and under a future scenario A2 for 2071-2100. The Meteorological Drought is assessed using the Standardized Precipitation Index (SPI) while the Hydrological Drought is analyzed by using both the semi-distributed hydrology model SWAT and Standardized Runoff Index (SRI). The catchment under study is a small river basin lying on the Central Highland area of Vietnam. This area is the source for perennial plantation which produces most of the coffee for Vietnam making it the world's second most exporter of coffee next to Brazil. Additionally, this region is also one of the important sources for hydropower of Vietnam and one of the main tributaries for the Mekong river at the downstream. This region has been known prone to drought, especially during dry seasons of March and April. Therefore, simulating drought for this area is significant to study the water supply and water balance for the region for future planning and adaptation.

Impact of climate change on meteorological, hydrological and agricultural droughts in the Lower Mekong River Basin: a case study of the Srepok Basin, Vietnam

“…This can be explained using the land‐use types in 2003 for the calibration and validation periods. Generally, the results obtained from calibration and validation of streamflow in the Srepok River Basin are similar to the previous studies conducted in the Central Highlands of Vietnam (Vu et al , ; Huyen et al , ).…”

“…Many studies on climate change impacts conducted in Vietnam have focused on water availability (Phan et al , ; Khoi and Suetsugi, ; Raghavan et al , ; Le and Sharif, ; Huyen et al , ). Another study conducted by Vu et al () considered future projection of hydro‐meteorological droughts for Dakbla River Basin in the Central Highlands of Vietnam. However, there are still limited studies concerning agricultural drought in Vietnam.…”

Analisis Karakteristik Kekeringan DAS Kapuas Kalimantan Barat Berdasarkan Luaran Global Climate Model

“…Kedua metode tersebut telah digunakan oleh beberapa peneliti sebelumnya. Metode SPI telah digunakan untuk analisis karakteristik kekeringan di pulau Kalimantan [8] dan Pulau Bali [9], metode SPI dan SRI secara bersamaan telah digunakan untuk menganalisis kekeringan hidrometeorologi bebera-pa Daerah Aliran Sungai (DAS) di Polandia [10], dan kedua metode tersebut juga telah digunakan untuk menganalisis kejadian banjir dan kekeringan di Vietnam [11].…”

Development of Future Rule Curves for Multipurpose Reservoir Operation Using Conditional Genetic and Tabu Search Algorithms

“…SWAT (Soil and Water Assessment Tool) [18] is a semidistributed hydrological model developed for the measurement of the inflow, sediment, and water quality under the climate and land-use changes [19]. SWAT can be used to continually measure the daily inflow and define a longer period of time in the future.…”