Research of air aerosol dispersion using numericalmodeling system

Air dispersion models are used by a range ofstakeholders involved in managing air quality.MM5(WRF)-CAMx4 numerical modeling systems are used tostudy air circulation over the complex terrain forwinter-time aerosol pollution.To improve the accuracy of predicted PMconcentrations a new method of several chemicalscenarios for the input gridded emissions isdeveloped. The MM5(WRF)-CAMx4 systems are evaluatedto predict aerosol concentrations over 48-72 hourperiod. The aerosol concentrations are calculated forfour different chemical compositions (scenarios) ofthe input gridded emissions. Combination of thechemical scenarios with the minimum error betweenmodeled and ambient data is employed to create a newcomplex scenario. Assessment of the efficiency of PM abatementstrategies for the period 2005-2013 is undertakenusing winter 2005 meteorology and a linear reductionin emissions according to proposed pollutionreduction program. A new numerical approach to locateoptimal position of a new observation site isprovided in the book.