Tehran encounters significant challenges in the realm of air pollution stemming from a confluence of vehicular emissions, industrial origins, geographical elements, and atmospheric circumstances.

The main purpose of this study is to investigate the distribution of air pollutants and their relationship with meteorological parameters, the amount of energy consumption, temperature and humidity of the soil and the amount of vegetation and to predict the role of these parameters in the levels of air pollution and finally to formulate environmental policies to reduce air pollution caused by these parameters and achieve sustainable management in Tehran. 

For this study, in the first step, information related to the concentration of air pollutants, meteorological variables, vegetation, energy consumption, temperature and soil moisture in Tehran from 2018 to 2023 were collected using satellite observations. Then, the concentration of pollutants, the period of seasonal changes and their overall average during the study period were calculated in different areas. In the second step, the effects of meteorological variables, the amount of vegetation, the amount of energy consumption, temperature and soil moisture on the concentrations of suspended particles were investigated. In the third step, regression, statistical and climatic models were analyzed to evaluate the dependence of air pollutant concentration on other effective factors based on monthly average values and the resulting correlations. The fourth step, the origin of pollutant production with the highest pollutant concentration in different areas was identified. The fifth step was to model the level of pollution concentrations in the coming years with dynamic models in Python. In the sixth step, the role of the amount of pollution caused by these pollutants in the atmosphere in climate change in Tehran city was predicted. 

The results showed that particulate matter (PM2.5), carbon monoxide (CO) (high levels in winter) and ozone (O3) (high levels in summer) are the main responsible for changes in air pollution during the last 6 years in Tehran. 

Environmental policies were designed and developed to reduce climate change and promote the health and well-being of citizens with the aim of sustainable management. The results of the surveys definitely showed the need to implement and develop environmental policies in the direction of the national clean air program and urgent measures to improve air quality for human health in Iran's metropolises, especially in Tehran.

Hossein Ganjidoust received his BS in Chemical Engineering from Kansas State University, Manhattan, Kansas in 1976, 1st MS in Industrial Management from Central Missouri State University, Warrensburg, Missouri in 1977 and 2nd MS in Sanitary Engineering from the University of Missouri-Columbia in 1978 and PhD in Environmental Engineering from the University of Missouri-Rolla in 1988. From March 1995 to April 1996.

He was on a Year of Sabbatical Leave at The National Institute for Resources & Environment (NIRE), Tsukuba Science City, Tsukuba, and Ibaraki, Japan. For three years since March 2013.He has over 30 years’ experience in teaching and research in graduate levels and is presently engaged as Full Professor in the Department of Environmental Engineering, Civil & Environmental Engineering Faculty, at Tarbiat Modares University in Tehran, I.R. Iran. Dr. Ganjidoust research interests include water & wastewater, industrial and hazardous waste handling, treatment, and disposal. In addition, he has given many lectures related to Culture, Archeology & humanity Sciences. 

He has supervised more than 30 research projects, and many PhD and MS students’ theses. At present time, he is supervisor of 6 PhD theses and 8 MS theses.

He has published over 150 papers in scientific and ISI Journals and over 200 conference proceedings on his research. He was engaged in the books entitled: Principles of construction debris Landfill Site Selection (Case study: Tehran), Department of Housing and Urban Development, Building and Housing Research Center, Feb. 2013 (in Persian), "Application of Moving Bed Biofilm Reactor (MBBR) in Sanitary & Industrial Wastewater Treatment", Tarbiat Modares Univ. Published in February 2011 and a chapter on: “Hazardous Waste Management in Islamic Republic of Iran, HWM Policies and Practices in Asian Countries” published by Asian Productivity Organization (APO), Tokyo in October 2001.