The study becomes important as air pollution is responsible for 18 per cent of the total annual premature deaths in India,” he added. Regulating the uncontrolled biomass-combustion emissions may help inhibit nocturnal haze formation and improve health. “The uncontrolled biomass burning for residential heating and cooking in the Indo-Gangetic plain gives rise to ultrafine particles, affecting the health of five per cent of the world’s population and impacting the regional climate,” he said. “The exhaustive research unearthed the reason behind the severe haze events experienced during winters in Delhi which is one of the world’s most-populated cities,” said Sachchida Nand Tripathi, from IIT Kanpur who was the principal investigator in the study. However the exact reasons behind their formation was hitherto unknown. “Delhi often experiences high amounts of particulate pollution also termed as haze.
The study, published in Nature Geoscience journal, was conducted in Delhi during the winter months of 2019 where aerosol size distribution and molecular composition of ambient aerosols and gases were measured.
A study conducted by Indian Institutes of Technology (IIT) Delhi and Kanpur, along with researchers from Paul Scherrer Institut (PSI) Switzerland and University Helsinki, Finland, and the Central Pollution Control Board (CPCB), found that high amount of particulate pollution in Delhi during the winter nights in 2019 was caused by biomass burning.
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