Rainfall data with an appropriate spatial resolution is a key input to hydrological models. However, networks of rain gauges are often sparsely and unevenly distributed in large catchments, especially in developing countries. High-resolution rainfall datasets, such as the Asian Precipitation Highly Resolved Observational Data Integration Towards Evaluation of Water Resources (APHRODITE), the Climate Forecast System Reanalysis (CFSR), the Climatic Research Unit Time Series (CRU-TS), the Global Precipitation Climatology Centre (GPCC) and the Tropical Rainfall Measuring Mission (TRMM), have become available to overcome such limitations. The objective of this study was to evaluate the impacts of four land-based rainfall products (APHRODITE, CFSR, CRU-TS, and GPCC) and a satellite-based rainfall product (TRMM) on streamflow of the upper catchment of Tri An reservoir in Vietnam using the Hydrological Modeling System (HEC-HMS). In addition, the available rain gauges data were used for comparison purpose. Result indicates that the TRMM and GPCC data show their best match to rain gauges data in simulating the streamflow in the period 1999-2007. Generally, the results indicate that the TRMM and GPCC data could be alternative solutions.
1.Duy Tan Univ, Inst Res & Dev, Da Nang, Vietnam 2.Inst Computat Sci & Technol, Tan Hiep Chanh Ward, Dist 12, Ho Chi Minh City, Vietnam 3.Vietnam Natl Univ Ho Chi Minh City, Univ Sci, Fac Environm, 227 Nguyen Van Cu St,Dist 5, Ho Chi Minh City, Vietnam 4.Ho Chi Minh City Univ Food Ind, 140 Le Trong Tan St, Ho Chi Minh City, Vietnam
Recommended Citation:
Pham Thi Thao Nhi,Dao Nguyen Khoi,Nguyen Xuan Hoan. Evaluation of five gridded rainfall datasets in simulating streamflow in the upper Dong Nai river basin, Vietnam[J]. INTERNATIONAL JOURNAL OF DIGITAL EARTH,2019-01-01,12(3):311-327