TITLE:
Applying the Distributed Hydrological Model for Tropical Monsoon Basins by Using Earth Observation Data (Case Studies: Kone and Ba River Basins)
AUTHORS:
Phan Thi Thanh Hang
KEYWORDS:
Distributed Hydrological Model, Tropical Monsoon, Discharge, Land Cover, Earth Observation Data
JOURNAL NAME:
Journal of Geoscience and Environment Protection,
Vol.7 No.1,
January
22,
2019
ABSTRACT: Due to the limitation of data sources, the application of Distributed Hydrological
Models (DHMs) using earth observation data to research water resources
is necessary. In this study, the BTOPMC (Block-wise use of
TOPMODEL) model was applied for 2 basins in the tropical monsoon region.
This is the first time that the land cover map of the CCI (Climate Change Initiative
Land Cover Team) was prepared for input data instead of IGBP (International
Geosphere-Biosphere Programme) land cover map as proposed in
the demo version of the BTOPMC model. The calibration and validation results
showed that the Nash-Sutcliffe coefficients for daily stream discharge
were 77.5% and 68.7% at Cung Son station (Ba basin). The Nash-Sutcliffe
coefficients for daily stream discharge were 79.4% and 69.0% at Binh Tuong
station (Kone basin), respectively. Because of a stop in measuring the discharge
at Binh Tuong station in 2007, this model was applied to simulate
discharge during the period of 2008-2015. Furthermore, the effect of land
cover on discharge at Cung Son station was considered. The annual discharge
in 2010 at Cung Son decreased 8 m3/s in the comparison between two scenarios
(land cover of 2000 and 2010). According to this result, it is possible to
propose a wide application range of the DHMs model to the tropical monsoon
river basins using earth observation data.