Use of Downscaled GCM Data for Modeling Groundwater Recharge, Basin Runoff, and Groundwater Levels

Diana Allen, Jacek Scibek & Diana Allen
A methodology is presented for generating spatially-distributed and temporally- varying recharge zonation and applied to a surficial valley aquifer situated in a mountainous, semi-arid area of southern British Columbia, Canada. Climate change scenarios from the Canadian Global Coupled Model 1 (CGCM1) model runs are downscaled to local conditions using Statistical DownScaling Model (SDSM), the change factors extracted and applied in the LARS-WG stochastic weather generator, and then input to the one-dimensional HELP hydrologic model, which...
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