1/2/2024 0 Comments New delhi climate lockdownAfter May 18, however, as lockdown rules were eased, the pollution graph started climbing again. PM 2.5 (ultrafine particles that can enter the lungs and blood stream) is the most prominent pollutant in Delhi-NCR as well as in other major cities across the country.īetween March 25 and May 18, when the nationwide lockdown was implemented without any major relaxations, the pollution levels in the national capital reduced drastically and remained in the “satisfactory” category for most of the time. It said, as compared to 84,399 heavy vehicles entering Delhi in January this year, only 7,942 plied in the city during April, when the lockdown was in full effect. “In Delhi-NCR, one of the major factors that led to the drop in pollution was a 97% reduction in overall traffic and 91% reduction in trucks and commercial vehicles entering the capital during April, as compared to the pre-lockdown months of December-January,” the study found. Of the six mega cities where PM 2.5 levels were studied during this period, Delhi saw the steepest rise of four to eight times, as compared to two to six times in other cities, the analysis shows.ĬSE studied the PM 2.5 levels of six cities - Delhi, Mumbai, Kolkata, Chennai, Hyderabad and Bengaluru - during both the initial and last phases of the nationwide lockdown to check the spread of Covid-19.Īccording to the findings, while the PM 2.5 levels in other cities dropped by 45-88% in the initial lockdown phase and witnessed a pollution spike of 2-6 times on opening up, Delhi saw both the steepest drop and sharpest spike. CSE studied the PM 2.5 levels of six cities - Delhi, Mumbai, Kolkata, Chennai, Hyderabad and Bengaluru - during both the initial and last phases of the nationwide lockdown to check the spread of Covid-19.(REUTERS) Pollution levels in Delhi-NCR - which had come down by around 79% during the initial phase of the lockdown, mainly owing to no industrial activity, reduced on-road traffic and a pause on construction activities - is on an upswing again as the city gradually opens up, a study by Centre for Science and Environment (CSE) has found.
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