eprintid: 14296 rev_number: 14 eprint_status: archive userid: 5 dir: disk0/00/01/42/96 datestamp: 2017-01-24 09:29:04 lastmod: 2021-08-27 17:28:28 status_changed: 2017-01-24 09:29:04 type: article metadata_visibility: show creators_name: Masaki, Y. creators_name: Hanasaki, N. creators_name: Biemans, H. creators_name: Müller Schmied, H. creators_name: Tang, Q. creators_name: Wada, Y. creators_name: Gosling, S. creators_name: Takahashi, K. creators_name: Hijioka, Y. creators_id: 9010 creators_id: 8940 creators_orcid: 0000-0003-4770-2539 title: Intercomparison of global river discharge simulations focusing on dam operation --- Part II: Multiple models analysis in two case-study river basins, Missouri-Mississippi and Green-Colorado ispublished: pub divisions: prog_wat 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. date: 2017-04-24 date_type: published publisher: IOP Publishing id_number: 10.1088/1748-9326/aa57a8 official_url: http://iopscience.iop.org/article/ creators_browse_id: 2891 creators_browse_id: 2601 full_text_status: public publication: Environmental Research Letters volume: 12 number: 5 pagerange: 055002 refereed: TRUE issn: 1748-9326 coversheets_dirty: FALSE fp7_project: no fp7_type: info:eu-repo/semantics/article citation: Masaki, Y., Hanasaki, N. , Biemans, H., Müller Schmied, H., Tang, Q., Wada, Y. ORCID: https://orcid.org/0000-0003-4770-2539 , Gosling, S., Takahashi, K., et al. (2017). Intercomparison of global river discharge simulations focusing on dam operation --- Part II: Multiple models analysis in two case-study river basins, Missouri-Mississippi and Green-Colorado. Environmental Research Letters 12 (5) 055002. 10.1088/1748-9326/aa57a8 . document_url: https://pure.iiasa.ac.at/id/eprint/14296/2/Masaki%2Bet%2Bal_2017_Environ._Res._Lett._10.1088_1748-9326_aa57a8%281%29.pdf