Laleh Abbasi Chaleshtori; Farhad Nejadkoorki; Khosro Ashrafi
Volume 13, Issue 1 , April 2015, , Pages 15-24
Abstract
AERMOD is an advanced model of the dispersion of air pollutants that supports a variety of source types and is appropriate for estimating impacts from short-range transport for distances less than 50 km. The US Environmental Protection Agency (EPA), in conjunction with the American Meteorological Society ...
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AERMOD is an advanced model of the dispersion of air pollutants that supports a variety of source types and is appropriate for estimating impacts from short-range transport for distances less than 50 km. The US Environmental Protection Agency (EPA), in conjunction with the American Meteorological Society (AMS), has developed a new air quality dispersion model known as the AMS/EPA Regulatory Model (AERMOD). There is significant evidence on the impacts of buildings on dispersions of pollutants and, among the current air pollution models, AERMOD is that one that takes into account building characteristics. Due to its capabilities, the model has also been suggested by the USEPA. The current research examines the impacts of building characteristics as well as change in the dimensions of industrial structures close to a point source on the model output. Three different shapes (namely cubic, long and wide) were assumed as the building forms. Results showed that while the building dimensions increased the downwind pollution concentration was also increased significantly. Furthermore, buildings with a wide shape had greater impacts on pollution than the other two building forms. In other words, the output model shows greater sensitivity than the width of the building.
Vahid Esfahanian; Mahmoudreza Momeni,; Kamran Mahoutchi saeid; Khosro Ashrafi; Ali Badiei
Volume 12, Issue 3 , October 2014
Abstract
n this study, external costs due to air pollution in the city of Tehran are estimated for CO2, SO2, NOXand PM pollutants in 1390. In the first step, employing up to down procedure, these pollutants’ emission from oil products, liquid gas and natural gas fuel from transportation, industrial, household ...
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n this study, external costs due to air pollution in the city of Tehran are estimated for CO2, SO2, NOXand PM pollutants in 1390. In the first step, employing up to down procedure, these pollutants’ emission from oil products, liquid gas and natural gas fuel from transportation, industrial, household and commercial, army and departments, plants and refineries are estimated. Then the external costs due to these emissions have been computed based on presented Expenditure in universal bank and Iran’s environment organization report at 1381. The results show that external costs due to four mentioned air pollutants are approximately 18/06 thousand billion Rials (based on constant prices in 1981) in Tehran city in 1390. The maximum external costs are 83 percent for PM pollutant, 94 percent for transportation and 72 percent for gasoil fuel from point of views of pollutants type, pollutants producing section and the type of fuel consumed, respectively. Also, the total air pollution external costs due to these four pollutants are 0.18 and 0.71 percent with respect to Gross Domestic Production (GDP) of Iran and Tehran,respectively. In this study, realization of external costs is done under the light of Cost Plus method by inflation andexchange rates. In the first approach, external costs are estimated to be 24.88 thousand billiard Rials and in the second approach, they are found to be approximately 66.74 thousand billiard Rials.
