A new analysis by Centre for Science and Environment (CSE) shows that there is barely any difference in overall PM2.5 trends between the group of cities under National Clean Air Programme (NCAP) and those outside its ambit. NCAP has set a national-level target of 20-30% reduction in PM2.5 and PM10 concentration by 2024 from the 2017 base year.
The analysis, which was released on the eve of United Nations International Day of Clean Air for Blue Skies, says a large number of NCAP and non-NCAP cities need substantial reduction in PM2.5 levels to meet the national ambient air quality standards.
According to the analysis, seven cities, including Delhi and Ghaziabad, showed negligible change of less than 5% in PM2.5 concentration between 2019 and 2021, while 16 cities registered a significant increase of 5% or more.
Khanna, Jaipur and Udaipur have registered the most deterioration, with their 2021 annual value increasing by over 20% compared with the 2019 annual value. Faridabad, with 6% increase, is the only NCR-NCAP city with a significant worsening of air quality. It is also the only city outside the non-attainment list.
Punjab, Rajasthan and Maharashtra cities reported a significant rise in PM2.5 levels between 2019 and 2021.
この記事は The Times of India の September 07, 2022 版に掲載されています。
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この記事は The Times of India の September 07, 2022 版に掲載されています。
7 日間の Magzter GOLD 無料トライアルを開始して、何千もの厳選されたプレミアム ストーリー、9,000 以上の雑誌や新聞にアクセスしてください。
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