By Artash Aloyan, Vardan Arutyunyan (auth.), István Faragó, Krassimir Georgiev, Ágnes Havasi (eds.)
The safety of our surroundings is among the significant difficulties within the society. increasingly more vital actual and chemical mechanisms are to be extra to the pollution versions. furthermore, new trustworthy and powerful keep an eye on innovations for maintaining the pollutants as a result of destructive compounds lower than yes secure degrees must be built and utilized in a regimen approach. good established and properly analyzed huge mathematical versions can effectively be used to resolve this activity. using such versions results in the remedy of big computational projects. The effective answer of such difficulties calls for mixed examine from experts operating in numerous fields. the purpose of the NATO complex examine Workshop (NATO ARW) entitled “Advances in pollution Modeling for Environmental defense” was once to ask experts from all components concerning large-scale pollution modeling and to replace info and plans for destiny activities in the direction of enhancing the reliability and the scope of program of the present pollution versions and instruments. This ARW was once deliberate to be an interdisciplinary occasion, which supplied a discussion board for discussions among physicists, meteorologists, chemists, laptop scientists and experts in numerical research approximately alternative ways for bettering the functionality and the standard of the result of various pollution models.
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Additional resources for Advances in Air Pollution Modeling for Environmental Security: Proceedings of the NATO Advanced Research Workshop on Advances in Air Pollution Modeling for Environmental Security Borovetz, Bulgaria 8–12 May 2004
1. INTRODUCTION For the past decades, energy generation, industrial production and transportation have caused serious environmental contamination in EastCentral Europe. The rate of contamination can vary from place to place as a function of source densities and intensities of pollutant fluxes as well as meteorological conditions. The pattern of pollution may be characterized not only by local, highly concentrated sites such as densely populated urban areas, but also by lower concentrations of pollution widely dispersed over the landscape including agricultural regions, forests and surface waters.
Another interesting thing is that even though the grid structure is assumed to be terrain following, no correction involving the horizontal gradient of the terrain height for the vertical velocity is made. In other words, w need not be 54 zero at the surface but is assumed so. As a result, the vertical velocity is effectively determined not for a terrain-following coordinate but for a rectangular coordinate system, but consistency is maintained because the same coordinate system is used to solve the continuity equations in the model.
It was found that Hungary belongs to the moderately polluted regions in Europe. It is also demonstrated that significant part of tropospheric ozone and its precursors are imported to Hungary through longrange atmospheric transport processes. Key words: Long-range transport models, trace elements, atmospheric deposition. 1. INTRODUCTION For the past decades, energy generation, industrial production and transportation have caused serious environmental contamination in EastCentral Europe. The rate of contamination can vary from place to place as a function of source densities and intensities of pollutant fluxes as well as meteorological conditions.