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What is the contribution of stubble burning to Delhi’s pollution?

By, Abhishek Jha, Hindustan Times, New Delhi
Nov 16, 2021 03:20 AM IST

A scientific study cited by the government in the Supreme Court indicates that the contribution of agricultural burning to PM 2.5 and PM10 is just 4% and 7% each in winter and summer, respectively. An HT analysis of pollution data and scientific research shows that these numbers don’t tell the real story.

In an affidavit filed in the Supreme Court, the Union ministry of environment, forest and climate change has said that stubble burning is not a major contributor to high levels of pollution in Delhi. “As per a scientific study carried out and to get indicative figures to show average sectoral contributions in PM 2.5 and PM 10 concentrations in Delhi” the respective contribution of agricultural burning to PM 2.5 and PM10 was just 4% and 7% each in winter and summer, the affidavit said. An HT analysis of pollution data and scientific research shows that these numbers don’t tell the real story. Here are four charts which explain why.

A Metro passes amid thick smog at Shakurbasti in New Delhi. Pollution and toxic air is a routine winter fixture in the Capital. ()(Sanchit Khanna/HT PHOTO)
A Metro passes amid thick smog at Shakurbasti in New Delhi. Pollution and toxic air is a routine winter fixture in the Capital. ()(Sanchit Khanna/HT PHOTO)
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