The Department of Civil and Environmental Engineering is pleased to announce Mohammad Reza Najafi's PhD Dissertation Defense: "Climate Change Impact on the Spatio-Temporal Variability of Hydro-Climate Extremes."
Date: Wednesday, May 8, 2013
Location: Engineering Building 202L (CEE Conference Room)
Adviser: Dr. Hamid Moradkhani
The uprising temperature of the earth due to climate change has shown to alter the variations in hydro-climate variables regarding their intensities, frequencies and durations. Extreme events such as floods are, in particular, susceptible to any disturbances in climate cycles. As such it is important to provide the policymakers with sufficient knowledge about the probable impacts of climate change on hydrologic variables and most importantly floods which have the highest impacts on the societies. Accordingly this thesis aims to: 1) provide a predictor selection algorithm for downscaling of coarse resolution global climate models and assess the uncertainties in downscaling techniques, 2) quantify and compare the uncertainties regarding global climate models to the ones from the hydrologic model structures in climate change impact studies, 3) propose the spatial hierarchical Bayesian model for hydro-climate extreme analyses in order to combine data recorded at each gage site or grid cell, 4) investigate the different behaviors of the regional climate models (RCMs) regarding the runoff extremes over the Pacific Northwest and 5) provide a multi-model ensemble average of hydro-climate extremes and characterize the inherent uncertainties.