• NAGEGOWDA P

Metropolitan cities are one of the most air polluted provinces in India. According to the Ministry of Environmental Protection (MEP) for the severe fog-haze month of Jan. 2016, seven of the top ten most polluted cities in India are located in Metropolitan Cities. In this study, the air pollution history and status of the Metropolitan cities are reviewed and discussed, using the governmental published Air Pollution Index (API), the academic observations by various scientific research groups and the long-term statistics of visibility and haze frequencies. It is found that within the Metropolitan cities, the air pollution in the southern cities is much more severe than the northern cities. Particulate matter (PM) is undoubtedly the major air pollutant, sulfur dioxide (SO2) and nitrogen oxides (NOX) pollutions are also unnegligible. Ozone (O3) pollution in larger cities, such as Delhi, is significant. Air pollution control history from 1998 is discussed as well. Although Indian Province has made a great effort on air quality, the pollutant emissions, such as SO2 and fly ash, showed a notable increase in 2001 to 2006. However, after 2006 the emissions started to decrease due to the strict implementation of the national 12th Five Year Plan (FYP). In addition, regional jointly air pollution control and prevention strategies are expected in the future to substantially change the severe air pollution status in Metropolitan cities.

Air Quality; Metropolitan cities; API; PM2.5

"A REVIEW OF AIR POLLUTION AND CONTROL IN METROPOLITAN CITIES IN INDIA", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.11, Issue 1, page no.g879-g884, January-2024, Available :http://www.jetir.org/papers/JETIR2401698.pdf

"A REVIEW OF AIR POLLUTION AND CONTROL IN METROPOLITAN CITIES IN INDIA", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.11, Issue 1, page no. ppg879-g884, January-2024, Available at : http://www.jetir.org/papers/JETIR2401698.pdf