By B. O. Akkoyunlu, M. Tayanç (auth.), Dimitrios Melas, Dimiter Syrakov (eds.)
An realizing of long-range delivery of air pollution within the surroundings calls for a data of the proper atmospheric dynamic and chemical methods lively on the neighborhood scale in addition to the temporal and spatial distribution of emissions. Numerical modeling is the most productive technique to be certain the atmospheric shipping, photochemistry and deposition pathways. The e-book accordingly discusses the actual and chemical approaches that be certain local pollution and offers the appropriate modeling strategies to explain the various atmospheric approaches which are lively at that scale.
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Extra info for Air Pollution Processes in Regional Scale
2. Used Methods The study presented is based on 30 min. measurements carried on Tirana Observatory station of HMI for the years 1999, 2000. 1. DIRECT METHOD We start with observation of conventional analysis of 30 min. of SO2 concentration during 24 hours. Grouping the data on 30-min. means for every month, we can better evaluate the characteristics of interest within the day. For the yearly course of SO2 pollution, monthly mean values are evaluated for each year. This method is simple, makes no assumptions about the distribution of amounts, but can’t be used for periods of any length (in our case, at least the daily mean values can be ranked).
The model is based on the primitive equations with temperature, pressure, humidity and horizontal wind velocity components as prognostic variables. Operationally, different local versions of the HIRLAM model are used, and in this study we use HIRLAM data provided by the Swedish Meteorological and Hydrological Institute. At the lateral boundaries the model is forced with operational analyses from the global models at the ECMWF. The operational HIRLAM with a forecast period of 6 to 11 hours, is used in this study.
Batchvarova, E. E. (1998) Wind Climatology, Atmospheric Turbulence and Internal Boundary-Layer Development in Athens During the MEDCAPHOT-Trace Experiment, Atmos. Environ. 32, 2055-2069. , and Steyn, D. (1999) Modelling Internal Boundary-Layer Development in a Region with a Complex Coastline, Boundary-Layer Meteorol. 90, 1-20. HARJA Department of Environment, Hydrometeorological Institute, Tirana, Albania Abstract The data analysis of SO2 pollution in Tirana urban station of Hydrometeorological Institute is described in this paper.
Air Pollution Processes in Regional Scale by B. O. Akkoyunlu, M. Tayanç (auth.), Dimitrios Melas, Dimiter Syrakov (eds.)