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Modeling Airborne Particulate Matter in Tehran by CMAQ Modeling System

Azoji, Hassan | 2015

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 48170 (09)
  4. University: Sharif University of Technology
  5. Department: Civil Engineering
  6. Advisor(s): Erhami, Mohammad
  7. Abstract:
  8. In recent years, in Tehran, air pollution became one of the major problems in this city. Among air pollutants, particle matter (PM) is very important in aspect of negative effect on environment and human health. Effective control of these particles requires correct determination of rules and adopting appropriate managing policy which are mostly very cost-consuming. Rules determination and adopting appropriate policy is very challenging in Tehran due to lack of sufficient information about concentration dispersion of such particles. The aim of this study is to recognize the factors of producing PM10 and appropriate understanding of changes of particle matter concentration of Tehran by modeling air quality of the city. Our desired period in this research is two period of 4 days in summer and winter 2010. The applied model in this study is couple of CMAQ-SMOKE-WRF, in which via SMOKE software, the emission due to particle matter dispersion resources will be obtained and Tehran aerology information which is obtained via WRF, particle matters concentration is obtained by CMAQ model and finally, the obtained results from models is assessed and compared with observed results. The results demonstrate that WRF model could properly make the temperature procedure. But it was filed in wind speed modeling. For instance, average of wind speed for model is obtained more than 6 times than compared to observations in summer. The result s of CMAQ showed that the model was more successful in winter rather in summer. Also, comparing share of sources of particle matter concentration demonstrated that transportation sources have the highest role in amount of concentration of these particles in considered stations. So by considering this assumption, we assess by changing 30% of available vehicles into standard ones with Euro 5 emission. The comparison showed that, most changes was in central of Tehran wherein the traffic is maximum. This change is obtained about 28% in this cellular
  9. Keywords:
  10. Tehran ; Concentration ; Air Particulate Matter ; Air Quality ; Community Multiscale Air Quality Modeling System (CMAQ)

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