Pollution levels in Delhi higher this Diwali as compared to 2019: CPCB


    Pollution levels in Delhi higher this Diwali as compared to 2019: CPCB

    The CPCB said Pitampura recorded an increase in PM (particulate matter) and SO2 suggesting the impact of firecracker rupturing on Diwali.

    Delhi pollution

    Children bursting firecrackers during Diwali Celebration, in New Delhi on Saturday. (ANI Image)

    Upgraded: Nov 16, 2020, 03: 20 PM IST

    Contamination levels were higher in Delhi this Diwali as compared to in 2015 due to rupturing of firecrackers and stubble burning, according to the Central Pollution Control Board’s (CPCB) report filed before the National Green Tribunal (NGT).

    In the report, the CPCB stated Pitampura tape-recorded a boost in PM (particulate matter) and SO2 suggesting the effect of firecracker rupturing on Diwali.

    In 2020, on Diwali day, a reduction in PM 10 and PM 2.5 was observed as compared to pre-Diwali day by about 16 percent and 18 percent. This decrease is possibly due to about 6 percent decrease in the contribution of stubble burning this year, it included.

    The board likewise apprised that as observed from real-time tracking network (37 CAAQM stations), the per hour average concentration of PM 2.5 started increasing since 11 pm on November 14, it reached a peak in the majority of the stations at around 1 am and continued at greater levels till 5 am.

    ” The city-level typical computed for PM 10 and PM 2.5 concentrations on Diwali, were 645 ug/m3 and 483 ug/m3 respectively.”

    According to the report, in 2019 the PM 10 was increased by 70 per cent and PM 2.5 was risen by 149 percent on Diwali day in contrast to pre-Diwali day.

    It likewise cited relative meteorology on pre-Diwali day and Diwali day observed during the last five years, which exposes that typical blending height on pre-Diwali day along with Diwali day was least expensive this year (2020), and stated that this was because of the falling of Diwali in mid-November when the winter begins affecting decrease in temperature and inversion starts.

    ” Mean wind speed at Parivesh Bhawan was 1.3 m/sec (3.4 Km/hour) on Diwali day which is most affordable in the last five years developing unfavourable dispersion condition,” the report stated.

    The CPCB brought out ambient air quality and sound level tracking on the selected pre-Diwali day (November 9) and on Diwali in Delhi like previous years. Ambient air quality was kept an eye on at 40 areas– 3 handbook stations and 37 real-time stations.

    The ambient sound level was monitored at 16 locations– 6 manual and 10 real-time noise tracking stations.

    India, Delhi.
    ( the heading, this story has actually not been published by Important India News personnel and is released from a syndicated feed.).


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