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This paper describes numerical experiments conducted by using the meteorological model CALMET. The aim is to assess how the computational time of the model runs depends on user-defined parameters involved in the iterative procedure used by CALMET to solve the meteorological field. The influence of the weather conditions on the simulation time has been also evaluated.
Thunderstorm downbursts are major cause of concern for engineering structures both on ground as well as those in air, namely aircrafts. The wind velocity profile of a thunderstorm downburst-induced wind is significantly different compared to natural atmospheric boundary layer winds. As a type of high intensity winds, thunderstorm microbursts have caused numerous structural failures around the world...
The purpose of this paper is to introduce and evaluate a high-resolution (5km) atmospheric downscaling system. The NCEP-NCAR Reanalysis and the NCEP-DOE Reanalysis II are used to drive a 30 years multi-scale simulation. We report in this paper the different steps for the implementation of the downscaling strategy. Our system has been applied to the east coast of South America with a specific emphasis...
As a type of high intensity winds, thunderstorm microbursts have caused numerous structural failures around the world. The numerical method was employed to investigate the formation and diffusion unsteady wind fields for thunderstorm microburst related high intensity winds. Unsteady simulations of formation and diffusion wind fields were conducted using time-filtered Reynolds Averaged Navier-Stokes...
In this paper, we present an approach to numerical solution of a model that simulates the process of pollutant dispersion in the planetary boundary layer. The foundation of model itself comes from the current research of a wind and diffusion modeling. From a technical point of view it is described by the advection-diffusion equation in two dimensions - the distance from a source and the height above...
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