October 16, 2020 5:00:16 pm
Meteorological situations in Delhi have been “extraordinarily unfavourable” for dispersion of pollution since this September as in comparison with final 12 months, the Central Air pollution Management Board (CPCB) stated on Friday.
CPCB Member Secretary Prashant Gargava stated the PM10 focus between September 1 and October 14 this 12 months has been extra as in comparison with the corresponding interval final 12 months.
An evaluation confirmed there have been seven wet days with cumulative rainfall of 121 mm, between September 1 and October 14 in 2019. This 12 months, there have been solely three wet days with 21 mm rainfall throughout the identical interval, he stated.
“Meteorological situations have been extraordinarily unfavourable in September and October this 12 months as in comparison with the corresponding interval final 12 months,” Gargava stated.
The typical air flow index has been 1,334 metre sq. per second in September and October this 12 months as in comparison with 1,850 metre sq. per second throughout the corresponding interval final 12 months, the official stated.
Air flow index is the velocity at which pollution can get dispersed. A air flow index decrease than 6,00zero sqm/second, with common wind velocity lower than 10 kmph, is unfavourable for dispersal of pollution.
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