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Stubble Burning Accounts For 40 Percent Of Delhi Air Pollution

NASA's satellite imagery showed a large, dense cluster of fire dots covering Punjab and parts of Haryana and Uttar Pradesh.

Stubble Burning Accounts For 40 Percent Of Delhi Air Pollution
Representational image | PTI Photo/Manvender Vashist
Stubble Burning Accounts For 40 Percent Of Delhi Air Pollution
outlookindia.com
2020-11-01T19:16:17+05:30

The share of stubble burning in Delhi's pollution rose to 40 percent on Sunday, the maximum so far this season, according to a central government air quality monitoring agency.

The Ministry of Earth Sciences' air quality monitor, SAFAR, said 3,216 farm fires were spotted over Punjab, Haryana, Uttar Pradesh, and Uttarakhand on Saturday.   

The share of stubble burning in Delhi's PM2.5 pollution was 40 percent on Sunday, the maximum so far this season. It was 32 percent on Saturday, 19 percent on Friday, and 36 percent on Thursday, the second-highest this season so far.

Last year, the stubble contribution to Delhi's pollution had peaked at 44 percent on November 1, according to SAFAR data.

NASA's satellite imagery showed a large, dense cluster of fire dots covering Punjab and parts of Haryana and Uttar Pradesh. 

SAFAR said air quality has not improved much despite improved ventilation due to high stubble-related intrusion and trapping of pollutants during night time due to low wintertime boundary layer height.

"However, it has not deteriorated further despite favorable North-North-Westerly boundary level wind direction. The highly favorable conditions for fire-related intrusion in Delhi is expected to continue," it said.

SAFAR predicted better ventilation for the next two days but said the AQI is likely to improve only marginally, depending on farm fires. It is set to deteriorate slightly on November 3, it said.

The city recorded an air quality index (AQI) of 370 at 3 pm. The 24-hour average AQI was 367 on Saturday. It was 374 on Friday, 395 on Thursday, 297 on Wednesday, 312 on Tuesday, and 353 on Monday.

An AQI between 0 and 50 is considered 'good', 51 and 100 'satisfactory', 101 and 200 'moderate', 201 and 300 'poor', 301 and 400 'very poor', and 401 and 500 'severe'.

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