New Delhi: The daily percentage of emissions from harvest-stubble burning in the PM2.5 pollutants in Delhi varied from 25% to 48% between November 4 and November 13, the highest on a single day being 48% on November 7, according to SAFAR data. Though the central government informed the Supreme Court that farm fire pollutants comprised 10% of the city’s bad air, experts said the magnitude of stubble burning in the pollution crisis should not be diminished because farm fires were not a year-round phenomenon and registered high impact figures only in October-November.
Data from different studies over the years brings out the varying nature of farm fires' share in the pollutants in Delhi’s air. A study by IIT Kanpur in 2016 stated the contribution of biomass burning to the city’s PM2.5 was 26% in winter and 12% in summer. Another by the Council on Energy, Environment and Water (CEEW) titled ‘Bending Delhi’s Air Pollution Curve’ said the relative contribution from farm fires was the highest (31.4%) between October 15 and November 15, 2020, reducing then to 8.6% between November 15 and December 15, 2020 and 4.1% between December 15, 2020 and January 15, 2021.
Bu hikaye The Times of India Delhi dergisinin November 16, 2021 sayısından alınmıştır.
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Bu hikaye The Times of India Delhi dergisinin November 16, 2021 sayısından alınmıştır.
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