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TOWARDS IMPROVED HYDROLOGIC LAND SURFACE MODELLING: ENHANCED MODEL IDENTIFICATION AND INTEGRATION OF WATER MANAGEMENT

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dc.contributor.advisorWheater, Howard
dc.contributor.advisorRazavi, Saman
dc.contributor.committeeMemberLindenschmidt, Karl-Erich
dc.contributor.committeeMemberElshorbagy, Amin
dc.contributor.committeeMemberPietroniro, Al
dc.contributor.committeeMemberGober, Patricia
dc.creatorYassin, Fuad
dc.creator.orcid0000-0001-8179-7928
dc.date.accessioned2019-10-08T15:18:23Z
dc.date.available2019-10-08T15:18:23Z
dc.date.created2019-10
dc.date.issued2019-10-08
dc.date.submittedOctober 2019
dc.date.updated2019-10-08T15:18:24Z
dc.description.abstractLarge-scale hydrological models are essential tools for addressing emerging water security challenges. They enable us to understand and predict changes in water cycle at river-basin, continental, and global scales. This thesis aimed to improve ‘land surface models’ for large-scale hydrological modelling applications. Specifically, the research contributions were made across four fronts: (1) improving the conventional procedure for parameter identification of hydrological processes by using new sources of remotely-sensed data in addition to streamflow data within a multi-objective optimization and sensitivity analysis framework, (2) developing and integrating an efficient parameterization scheme for the representation of reservoirs into the land surface model for realistic representation of downstream flows, which can further feedback to land surface and atmospheric models, (3) demonstrating how precipitation uncertainty from multiple high-resolution precipitation products influences the performance of a land-surface based hydrological model, and (4) developing an enhanced and comprehensive large-scale hydrologic model for a complex and heavily regulated watershed. The analyses and results of this thesis illuminated important issues and their solutions in large-scale hydrological modelling. First, the multi-objective optimization and sensitivity analysis approach using multiple state and flux variables and performance criteria enables robust model parameterization and lessens issues around parameter equifinality in the highly-parameterized land surface models. Second, the dynamic parameterization of reservoir operation, based on multiple storage zones and reservoir release targets, improves the simulation of reservoir storage dynamics and downstream release, and subsequently, significantly improves the fidelity of land surface models when modeling managed basins. Third, there is a critical need for a rigorous evaluation of precipitation datasets widely used for forcing land surface models. The datasets investigated here showed considerable discrepancies, bringing their utility for land surface modelling into question. Fourth, effective parameterization and calibration of land surface models is critically important, particularly in large, complex, and highly-regulated basins.
dc.format.mimetypeapplication/pdf
dc.identifier.urihttp://hdl.handle.net/10388/12398
dc.subjectGRACE
dc.subjectPareto‐optimal
dc.subjectmodel state variable
dc.subjectmultiobjective optimization
dc.subjectparameter identification
dc.subjectsensitivity analysis
dc.subjectPrecipitation Uncertainty
dc.subjectHydrologic-Land Surface Models
dc.subjectmulti-criteria calibration
dc.subjectstorage and fluxes validation
dc.subjectSaskatchewan River Basin
dc.subjectreservoir operations
dc.subjectreservoir parameterization
dc.subjectirrigation modelling
dc.subjectMESH
dc.subjectCaPA
dc.subjectDDS
dc.subjectreservoir
dc.subjectlarge scale hydrology
dc.titleTOWARDS IMPROVED HYDROLOGIC LAND SURFACE MODELLING: ENHANCED MODEL IDENTIFICATION AND INTEGRATION OF WATER MANAGEMENT
dc.typeThesis
dc.type.materialtext
thesis.degree.departmentSchool of Environment and Sustainability
thesis.degree.disciplineEnvironment and Sustainability
thesis.degree.grantorUniversity of Saskatchewan
thesis.degree.levelDoctoral
thesis.degree.nameDoctor of Philosophy (Ph.D.)

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