Cherry May R. Mateo
University of Tokyo
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Publication
Featured researches published by Cherry May R. Mateo.
Water Resources Research | 2014
Cherry May R. Mateo; Naota Hanasaki; Daisuke Komori; Kenji Tanaka; Masashi Kiguchi; Adisorn Champathong; Thada Sukhapunnaphan; Dai Yamazaki; Taikan Oki
A catastrophic flood event which caused massive economic losses occurred in Thailand, in 2011. Several studies have already been conducted to analyze the Thai floods, but none of them have assessed the impacts of reservoir operation on flood inundation. This study addresses this gap by combining physically based hydrological models to explicitly simulate the impacts of reservoir operation on flooding in the Chao Phraya River Basin, Thailand. H08, an integrated water resources model with a reservoir operation module, was combined with CaMa-Flood, a river routing model with representation of flood dynamics. The combined H08-CaMa model was applied to simulate and assess the historical and alternative reservoir operation rules in the two largest reservoirs in the basin. The combined H08-CaMa model effectively simulated the 2011 flood: regulated flows at a major gauging station have high daily NSE-coefficient of 92% as compared with observed discharge; spatiotemporal extent of simulated flood inundation match well with those of satellite observations. Simulation results show that through the operation of reservoirs in 2011, flood volume was reduced by 8.6 billion m3 and both depth and area of flooding were reduced by 40% on the average. Nonetheless, simple modifications in reservoir operation proved to further reduce the flood volume by 2.4 million m3 and the depth and area of flooding by 20% on the average. By modeling reservoir operation with a hydrodynamic model, a more realistic simulation of the 2011 Thai flood was made possible, and the potential of reducing flood inundation through improved reservoir management was quantified.
Hydrology and Earth System Sciences Discussions | 2017
Cherry May R. Mateo; Dai Yamazaki; Hyungjun Kim; Adisorn Champathong; Jai Vaze; Taikan Oki
Global-scale river models (GRMs) are core tools for providing consistent estimates of global flood hazard, especially in data-scarce regions. Due to former limitations in computational power and input datasets, most GRMs have been developed to use simplified representations of flow physics and run at coarse spatial resolutions. With increasing computational power and improved datasets, the application of GRMs to finer resolutions is becoming a reality. To support development in this direction, the suitability of GRMs for application to finer resolutions needs to be assessed. This study investigates the impacts of spatial resolution and flow connectivity representation on the predictive capability of a GRM, CaMa-Flood, in simulating the 2011 extreme flood in Thailand. Analyses show that when single downstream connectivity (SDC) is assumed, simulation results deteriorate with finer spatial resolution; Nash–Sutcliffe efficiency coefficients decreased by more than 50 % between simulation results at 10 km resolution and 1 km resolution. When multiple downstream connectivity (MDC) is represented, simulation results slightly improve with finer spatial resolution. The SDC simulations result in excessive backflows on very flat floodplains due to the restrictive flow directions at finer resolutions. MDC channels attenuated these effects by maintaining flow connectivity and flow capacity between floodplains in varying spatial resolutions. While a regional-scale flood was chosen as a test case, these findings should be universal and may have significant impacts on largeto globalscale simulations, especially in regions where mega deltas exist.These results demonstrate that a GRM can be used for higher resolution simulations of large-scale floods, provided that MDC in rivers and floodplains is adequately represented in the model structure.
International Journal of Sustainable Future for Human Security | 2015
Natt Leelawat; Cherry May R. Mateo; Sandy mae Gaspay; Anawat Suppasri; Fumihiko Imamura
Hydrological Research Letters | 2014
Satoshi Watanabe; Yukiko Hirabayashi; Shunji Kotsuki; Naota Hanasaki; Kenji Tanaka; Cherry May R. Mateo; Masashi Kiguchi; Eiji Ikoma; Shinjiro Kanae; Taikan Oki
Journal of disaster research | 2015
Natt Leelawat; Anawat Suppasri; Shuichi Kure; Carine J. Yi; Cherry May R. Mateo; Fumihiko Imamura
Journal of disaster research | 2013
Daisuke Komori; Cherry May R. Mateo; Akane Saya; Shin-ichiro Nakamura; Masashi Kiguchi; Phonchai Klinkhachorn; Thada Sukhapunnaphan; Adisorn Champathong; Kimio Takeya; TaikanOki
Archive | 2017
Jai Vaze; Cherry May R. Mateo; Bill Wang
Archive | 2016
Dushmanta Dutta; Jai Vaze; Fazlul Karim; Shaun Kim; Cherry May R. Mateo; Catherine Ticehurst; Jin Teng; Steve Marvanek; John C. Gallant; Jenet Austin
Japan Geoscience Union | 2015
Natt Leelawat; Anawat Suppasri; Mari Yasuda; Carine J. Yi; Cherry May R. Mateo; Sandy mae Gaspay; Fumihiko Imamura
2015 AGU Fall Meeting | 2015
Cherry May R. Mateo