Diwali: Delhi’s air quality on brink of turning ‘extreme’

According to the Central Pollution Control Board’s knowledge, the capital’s 24-hour common AQI stood at 382 on November 4, up from 314 on November 3. It was 303 on November 2 and 281 on November 1.

With the share of stubble burning in Delhi’s air pollution rising to 25% on Diwali, the best this season to this point, authorities have stated that the air quality within the metropolis could flip “severe” by midnight and shoot up quickly by November 5 morning, if firecrackers are burnt.

The PM2.5 air pollution within the capital could enter the “severe” zone by midnight even when there may be 50% of firecrackers emissions as in comparison with final 12 months, stated Gufran Beig, the founder undertaking director of SAFAR.

The PM2.5 air pollution will shoot up quickly by November 5 early morning, with the common air quality index (AQI)even crossing the 500-mark, he stated.

According to the Central Pollution Control Board’s knowledge, the capital’s 24-hour common AQI stood at 382 on November 4, up from 314 on November 3. It was 303 on November 2 and 281 on November 1.

An AQI between zero and 50 is taken into account ‘good’, 51 and 100 ‘passable’, 101 and 200 ‘reasonable’, 201 and 300 ‘poor’, 301 and 400 ‘very poor’, and 401 and 500 ‘extreme’.

“The extremely calm wind conditions in Delhi and 25 per cent stubble share (fire count 2,293) are two major factors today,” SAFAR said.

According to SAFAR model forecasts, the stubble burning share may increase to 35% November 5 and 40% November 6 with the wind direction changing to northwesterly.

Northwesterly winds carry smoke from farm fires in Punjab and Haryana towards the national capital.

“Relief is predicted solely from the night of November 7 however AQI will fluctuate inside ‘very poor’ vary,” the air quality forecast agency said.

An official from the India Meteorological Department had earlier said that model predictions do not indicate the AQI reaching the ‘severe’ category “even with larger emissions”.

Last year, the share of stubble burning in Delhi’s pollution had peaked at 42% on November 5. In 2019, crop residue burning accounted for 44% of Delhi’s PM2.5 pollution on November 1.

Delhi Environment Minister Gopal Rai on November 4 had urged the Centre to issue an advisory to Punjab, Haryana and Uttar Pradesh to completely stop stubble burning during the Diwali period so that people could breathe easy after the festival.

The contribution of stubble burning in Delhi’s PM2.5 concentration was 32% on Diwali day last year as compared to 19% in 2019.

The contribution of farm fires in Delhi’s air pollution has remained low this season so far due to the record-breaking rainfall in October and “unfavourable” wind direction for transport of smoke from stubble burning.

SAFAR said “very calm” native Delhi wind situations with little air flow is predicted for the following three days which will likely be unfavourable for dispersion of pollution.

On October 27, the Delhi authorities had launched the ‘Patakhe Nahi Diye Jalao’ marketing campaign to create consciousness in opposition to the bursting of crackers.

Action is being taken below related IPC provisions and the Explosives Act in opposition to anybody discovered burning crackers below the marketing campaign.

On September 28, the Delhi Pollution Control Committee ordered an entire ban on the sale and bursting of firecrackers within the nationwide capital until January 1, 2022.

According to the federal government, greater than 13,000 kg of unlawful firecrackers have been seized and 33 individuals arrested below the anti-cracker marketing campaign.

PTI , 2021-11-04 19:00:05

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