Downscaling of climate, inland and coastal hydrology models for coastalAssessments

We present results from an analysis for the southeastern USA performed for present and mid-century climate conditions as it relates to flood levels. Dynamically downscaled regional climate model simulations at 12lm spatial resolution for 1995-2004 and 2045-2054 for RCP 8.5 conditions were used to perform regional scale inland hydrological simulations using WRF-Hydro^®at 200m grid resolution for the decadal length scale with multiple members of the regional scale atmospheric downscale generated with WRF. Coastal flood simulations from tropical events were simulated using the ADCIRC model by simulating events driven by the regional scale downscaled results for summer months for each of the 10-yrs in the current and mid-century conditions. The water depth from these two models (WRF-Hydro^® and ADCIRC) were combined to produce expected water depths for 10,20 and 50 year events and the estimates of uncertainty for these projections using generalized extreme value theory. We will present highlights of these results and potential applications to impacts on infrastructure related to telecommunications sector.