Yoshimitsu Masaki
Intercomparison of global river discharge simulations focusing on dam operation: multiple models analysis in two case-study river basins, Missouri-Mississippi and Green-Colorado
Masaki, Yoshimitsu; Hanasaki, Naota; Biemans, Hester; M�ller Schmied, Hannes; Tang, Qiuhong; Wada, Yoshihide; Gosling, Simon; Takahashi, Kiyoshi; Hijioka, Yasuaki
Authors
Naota Hanasaki
Hester Biemans
Hannes M�ller Schmied
Qiuhong Tang
Yoshihide Wada
Dr SIMON GOSLING SIMON.GOSLING@NOTTINGHAM.AC.UK
Professor of Climate Risks and Environmental Modelling
Kiyoshi Takahashi
Yasuaki Hijioka
Abstract
We performed a twofold intercomparison of river discharge regulated by dams under multiple meteorological forcings among multiple global hydrological models for a historical period by simulation. Paper II provides an intercomparison of river discharge simulated by five hydrological models under four meteorological forcings. This is the first global multimodel intercomparison study on dam-regulated river flow. Although the simulations were conducted globally, the Missouri-Mississippi and Green-Colorado Rivers were chosen as case-study sites in this study. The hydrological models incorporate generic schemes of dam operation, not specific to a certain dam. We examined river discharge on a longitudinal section of river channels to investigate the effects of dams on simulated discharge, especially at the seasonal time scale. We found that the magnitude of dam regulation differed considerably among the hydrological models. The difference was attributable not only to dam operation schemes but also to the magnitude of simulated river discharge flowing into dams. That is, although a similar algorithm of dam operation schemes was incorporated in different hydrological models, the magnitude of dam regulation substantially differed among the models. Intermodel discrepancies tended to decrease toward the lower reaches of these river basins, which means model dependence is less significant toward lower reaches. These case-study results imply that, intermodel comparisons of river discharge should be made at different locations along the river’s course to critically examine the performance of hydrological models because the performance can vary with the locations.
Citation
Masaki, Y., Hanasaki, N., Biemans, H., Müller Schmied, H., Tang, Q., Wada, Y., …Hijioka, Y. (2017). Intercomparison of global river discharge simulations focusing on dam operation: multiple models analysis in two case-study river basins, Missouri-Mississippi and Green-Colorado. Environmental Research Letters, 12(5), Article 055002. https://doi.org/10.1088/1748-9326/aa57a8
Journal Article Type | Article |
---|---|
Acceptance Date | Jan 9, 2017 |
Online Publication Date | Apr 24, 2017 |
Publication Date | Apr 24, 2017 |
Deposit Date | Jan 11, 2017 |
Publicly Available Date | Apr 24, 2017 |
Journal | Environmental Research Letters |
Electronic ISSN | 1748-9326 |
Publisher | IOP Publishing |
Peer Reviewed | Peer Reviewed |
Volume | 12 |
Issue | 5 |
Article Number | 055002 |
DOI | https://doi.org/10.1088/1748-9326/aa57a8 |
Public URL | https://nottingham-repository.worktribe.com/output/841184 |
Publisher URL | http://iopscience.iop.org/article/10.1088/1748-9326/aa57a8 |
Files
Masaki_2017_Environ._Res._Lett._12_055002.pdf
(2 Mb)
PDF
Copyright Statement
Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/3.0
You might also like
Globally widespread and increasing violations of environmental flow envelopes
(2022)
Journal Article
The timing of unprecedented hydrological drought under climate change
(2022)
Journal Article
Downloadable Citations
About Repository@Nottingham
Administrator e-mail: digital-library-support@nottingham.ac.uk
This application uses the following open-source libraries:
SheetJS Community Edition
Apache License Version 2.0 (http://www.apache.org/licenses/)
PDF.js
Apache License Version 2.0 (http://www.apache.org/licenses/)
Font Awesome
SIL OFL 1.1 (http://scripts.sil.org/OFL)
MIT License (http://opensource.org/licenses/mit-license.html)
CC BY 3.0 ( http://creativecommons.org/licenses/by/3.0/)
Powered by Worktribe © 2024
Advanced Search