Abstract
The Parallelized Large-Eddy Simulation Model (PALM) model is an atmospheric modeling system that is capable of simulating physical processes within the urban boundary layer and it is driven by the initial and boundary conditions taken from the mesoscale atmospheric models. The motivation behind this experiment was to obtain the best possible initial and boundary conditions for driving the mentioned model. In the course of this study three PALM model simulations were performed using three different sets of initial and boundary conditions obtained from the Weather Research and Forecasting
(WRF) model. The simulations were performed on an 8 km x 8 km domain in 10 m resolution which is capturing a real city area in the southeast part of Prague. A comparison of the WRF model outputs and PALM model outputs against the observations represented by atmospheric soundings was performed as well. The conducted simulations and comparisons showed that the PALM model outputs agree well with the imposed initial and boundary conditions for the given time period confirming the need for high-quality driving data. Further studies with other available mesoscale models and for different weather situations need to be performed in this regard.