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Stubble Burning Accounted For 6% Of Delhi's PM2.5 Pollution On Oct 15: SAFAR

PM2.5 refers to fine particulate matter less than 2.5 microns in diameter which can penetrate deep into lungs, impairing their function, and even the bloodstream.

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Stubble Burning Accounted For 6% Of Delhi's PM2.5 Pollution On Oct 15: SAFAR
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PTI Photo/Manvender Vashist
Stubble Burning Accounted For 6% Of Delhi's PM2.5 Pollution On Oct 15: SAFAR
outlookindia.com
2020-10-15T23:10:06+05:30

The share of stubble burning in Delhi's PM 2.5 concentration was 6 percent on Thursday, according to a central government agency.

It was only around one percent on Wednesday and around 3 percent on Tuesday, Monday and Sunday, according to the Ministry of Earth Sciences' air quality monitor SAFAR.

PM2.5 refers to fine particulate matter less than 2.5 microns in diameter which can penetrate deep into lungs, impairing their function, and even the bloodstream.

A layer of smoky haze lingered over Delhi-NCR on Thursday with air quality in the region hitting 'very poor' levels, even as stricter anti-air pollution measures, including a ban on electricity generators, came into force under the Graded Response Action Plan (GRAP).

“Delhi's overall AQI was recorded in the very poor category. The calm and variable surface wind condition continues and the AQI is likely to remain very poor on Friday,” it said.

According to SAFAR data, the contribution of farm fires to Delhi's PM 2.5 concentration was around 6 percent on Thursday.

An increase was observed in stubble burning incidents around Haryana, Punjab, and neighboring border regions on Wednesday. The farm fire count was 740, it said.

The wind direction is partly favorable for the transport of smoke from farm fires and "hence, an increase in contribution in Delhi's PM 2.5 is expected", SAFAR said.

NASA's satellite imagery also showed a large cluster of farm fires near Amritsar, Patiala, Tarn Taran and Firozpur in Punjab, and Ambala and Rajpura in Haryana.

Earlier in the day, Union Environment Minister Prakash Javadekar asserted that only 4 percent air pollution in Delhi is due to stubble burning and the rest are local factors, prompting a sharp response from the Delhi government.  

Chief Minister Arvind Kejriwal tweeted, “Staying in denial will not help. If stubble burning causes only 4% of pollution, then why has pollution suddenly increased last fortnight? Air was clean before that. Same story every year.

"There's no massive jump in any local source of pollution in the last few days to cause this spike?" he said.

Later, a spokesperson of the Union Environment Ministry clarified that Javadekar was referring to the contribution of stubble burning only for this year, which is 4 percent till now. Last year, it was much higher.

The ministry also tweeted, “Share of stubble burning changes every day. Last year, between 08 Oct-09 Dec, the share of Stubble burning in #AirPollution in Delhi (as per SAFAR data), was greater than15% on six days, while on a single day it was greater than 40%.” 


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