By Eugene L. Genikhovich (auth.), Carlos Borrego, Selahattin Incecik (eds.)
Carlos Borrego is Professor of Environmental Engineering and pollution Modeling on the collage of Aveiro (Portugal). Former Minister of atmosphere (Portuguese govt) and President of the ecu Union delegation to the United international locations convention on setting and improvement (Rio 1992). Chairman of the foreign Technical conferences of NATO/CCMS. Selahattin Incecik is Professor in Meteorology, pollution Meteorology and pollution Modeling. Former Head of division of Meteorology, ITU. consultant of Turkey in NATO ITM of pollution Modelling. consultant of collage in nationwide Atmospheric learn Council. Lead writer of IPCC/TEAP Safeguarding the Ozone Layer and international weather method, 2005 (in preparation).
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Additional resources for Air Pollution Modeling and Its Application XVI
Primary PM impacts were much higherin urban centres than in rural areas for both the summer and winter. Secondary organic aerosols (SOAs) due to anthropogenic VOC emissions were a small contributor to modelled PM2•S concentrations on both summer and winter days during the episodes. Fig. 4 and 5 show the sulphate decreases resulting from a 50% reduction in S02 emissions. Sulphate concentrations were reduced by 40 to 50% over most of the domain on July 14th• The fixed concentrations at the inflow boundaries result in much smaller percentage reductions in theseareas.
In both cases N03 is high, but the magnitude is much better with half ammonia emissions. NH4 corresponds well with observations. PMIO is slightly low, and PM2s is high by comparison with the observations. Modelled sulphate concentrations correlate with observed data but are somewhat lower than the measurements. Scatter plots for S02 and N02 give good correlations between modelled and observed concentrations, but the modelled S02 is high by about 50%. Modelled N02 concentrations are highly correlated with measured data and show very little bias.
Sofia. Bulgaria. October 14-17,2002, pp. 345-349. -AKSOYOGLU When you say that the agreement between model and measurements is good or bad, how do you define ·good, not bad, etc... J. SLOAN To carry out this study, it was first necessary to replace the approximate Canadian emissions inventories contained in the original release of the Models-3 system with correct values. Then we carried out a series of model runs to assess the performance of the model by comparison with results from several observational networks.