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The CMCC organizes a seminar with Dr. Alfonso Senatore (Dept. of Environmental and Chemical Engineering – University of Calabria), to be held in Lecce at the Ocean Lab’s premises.

The seminar is entitled “Impact of enhanced hydrological parameterization in WRF mesoscale model for short- and long-timescales” and is scheduled for Tuesday, July 21 (h. 11.30 – 12.30 a.m.).

Abstract
With the aim of developing a fully coupled atmosphere-hydrology model system, the Weather Research and Forecasting (WRF) Model was enhanced by integrating a new set of hydrologic physics parameterizations accounting for lateral water flow occurring at the land surface. The modeling system, called WRF-Hydro, was applied for a three-year long simulation in the Crati River Basin (Southern Italy), where output from the fully-coupled WRF/WRF-Hydro was compared to that provided by original WRF model. Precipitation, runoff, soil moisture, deep drainage and land surface heat fluxes between WRF-only and WRF/WRF-Hydro simulations are compared. It is shown that lateral redistribution and re-infiltration of local infiltration excess produced higher soil moisture content in the fully coupled model, resulting lower overall surface runoff and higher drainage. It is also shown that higher soil moisture values in WRF/WRF-Hydro slightly influenced precipitation and also increased latent heat fluxes. Overall, the fully coupled model tended to show better performance with respect to observed precipitation while allowing more water to circulate in the modeled regional water cycle thus, ultimately, modifying long-term hydrological processes at the land surface.