Journal of Environmental Research

Investigation of atmospheric synoptic patterns affecting Tehran's severe air pollution and 400 deaths due in mid-September 2016

Joint Event on 5^th International Conference on Pollution Control and Sustainable Environment & 10^th Edition of International Conference on Water: Pollution, Treatment & Research
March 14-16, 2019 London, UK

Nader Parvin

Payame Noor University, Iran

Posters & Accepted Abstracts: J Environ Res

Abstract

Air pollution is identified by the World Health Organization (WHO) as responsible for several million deaths per year (Crosignani et al., 2002; Abbey et al., 2005; Laden et al., 2006; Beelen et al., 2008; Pruss-Ustun et al., 2016). Air pollution is one of the most important environmental hazards of the present time in many metropolises of Iran. This phenomenon often causes a lot of damage during the cold season. In Tehran, in mid-September 2016, the severity of air pollution was so high that it killed 400 people and caused the closure of all schools in Tehran. The purpose of this study is to investigate atmospheric patterns of Tehran's air pollution at the sea level pressure (SLP) and the Middle Atmosphere (Hpa 500). For this purpose, data on air pollution in Tehran (Co and PM10) from the Air Pollution Control Center of Tehran were collected. High-weather and low-level weather maps from the NCEP / NCAR site were extracted and analyzed.The results of the study showed that a deep ridge was formed in Eastern Europe, and the Siberian range was integrated with the Western immigrant anti-cyclone. Since Tehran is located below the upper part of this pattern, its high atmospheric convergence causes divergence and extreme air sustainability on the ground and creates barotropic atmospheres. Such conditions have led to a decrease in air from the top to bottom, resulting in an increasing concentration of urban pollutants in the air near Earth's surface. This wave caused the continuing air pollution of Tehran for a week.