By István Faragó, Krassimir Georgiev, Ágnes Havasi

The safety of the environment is among the significant difficulties in society. progressively more vital actual and chemical mechanisms are to be extra to the pollution versions. additionally, trustworthy and strong keep an eye on techniques for retaining pollutants because of destructive compounds less than yes secure degrees need to be built and utilized in a regimen manner. good dependent and properly analyzed huge mathematical versions can effectively be used to unravel this activity. using such versions results in the therapy of big computational projects. The effective answer of such difficulties calls for mixed study from experts operating in numerous fields. The NATO ARW held at Borovetz (Bulgaria), within the interval 8-12 may perhaps, 2004 used to be dedicated to the above questions. This ebook comprises chosen papers of the assembly within the following issues: - enhancing the talents of pollution versions to calculate trustworthy predictions of the toxins degrees in a given area and in genuine time by utilizing sufficient description of the actual and chemical methods, - implementation of complex numerical equipment and algorithms within the versions, - effective usage of up to date computing device architectures, - improvement of mechanisms for learning debris (including the following effective and ultra-fine particles), biogenic emissions, and so forth. - optimization ideas within the examine of the toxins degrees, and so forth.

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Extra resources for Advances in Air Pollution Modeling for Environmental Security : Proceedings of the NATO Advanced Research Workshop on Advances in Air Pollution ... Series: IV: Earth and Environmental Sciences)

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The pollutant specific model parameters used are given in Table 3. 25 h. 4. CALCULATION RESULTS Monthly runs with the above mentioned sources are performed. The output consists of the following fields: monthly dry (DD), wet (WD) and total (TD) depositions, monthly concentration mean in air (CA) and additionally, monthly sum of the precipitation (CP). Then, it is easy to calculate the annual 46 total deposition (Figure 3), the mean annual surface concentration in air (Figure 4) and the mean concentration in the precipitation (Figure 5).

2001). Using the Danish Eulerian Model it was estimated, that even if the anthropogenic ozone precursors’ emissions in Hungary were equal to zero, the AOT40 values would be at a level of 77-95% of their present values. The reason for it is that transboundary transport of precursors and tropospheric ozone itself contribute significantly to the level of ozone concentration in Hungary. In addition, precursors of natural origin have also a considerable effect on ozone formation. REFERENCES Berdowski, J.

Kluwer, pp. 235-247. Szepesi, D. ), 1981, A levegĘkörnyezet (levegĘminĘség és humánkomfort) tervezése. MĦszaki Könyvkiadó. ) ADVANCES IN URBAN METEOROLOGY MODELLING Ekaterina Batchvarova(1) and Sven-Erik Gryning(2) (1) National Institute of Meteorology and Hydrology, 66 Blvd. Tzarigradsko Chaussee, BG 1784 Sofia, Bulgaria; (2)Risø National Laboratory, DK-4000 Roskilde, Denmark Abstract: In this study we focus on the lowest part of the urban boundary layer, which is connected to a horizontal scale of 2-3 km and a vertical scale covering the surface boundary layer.

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