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The purpose of this research is to measure and model the release of carbon monoxide pollutant in the surrounding space of Azadi Stadium in Tehran during sports competitions. Basic data were obtained by laboratory measurements and inquiries from specialized centers. Modeling was done by Austal View software, Version 7 and under four scenarios. The prediction of pollutant concentration was simulated at a height of 5 meters. The modeling area was considered a circle with a radius of 1 km from the center of the site. The resulting data were compared with national and international standards. The initial concentration of the pollutant in the hot and cold seasons of the year was 1.432 ppm and 2.331 ppm, respectively. The amount of pollutant emission for the state of "completion of parking capacity" and "semi-complete state" was 81.45 and 37.5 kg, respectively. Zoning maps showed that in all four scenarios, the highest amount of emission was in the east direction. The highest amount of carbon monoxide production and emission is related to the first scenario (completion of the parking capacity and the cold season of the year) and the lowest amount of carbon monoxide pollutant emission is under the fourth scenario (failure to complete the parking capacity and in the warm season of the year). Although the condition of this pollutant in Tehran's Azadi sports complex and during sports competitions has not exceeded the standard. By using management and engineering solutions such as: not keeping lights on in place, using exhaust filters, properly designing the parking space and reducing the duration of stopping, it is possible to avoid the production and release of a large part of pollutants.
 
     
Type of Study: Applicable | Subject: sport management
Received: 2023/09/11 | Accepted: 2024/04/21 | ePublished ahead of print: 2024/04/21

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