Summary:
New Delhi: Seasonal average of winter pollution in Delhi-NCR in 2020-2021 was higher than in the previous year but the severity and duration of smog episodes was lower, a new analysis by environment think tank Centre for Science and Environment (CSE) said on Wednesday. "The trapped winter air traps local and regional pollution in turn, and gives rise to the deadly winter smog that we, the residents of Delhi-NCR, are so familiar with," said Roychowdhury, who also heads CSE's sustainable urbanisation, air pollution and mobility programmes. Winter season is always a special challenge when inversion, and cool and calm weather traps and spikes daily pollution. the winter PM2.5 concentration has bounced back, unmasking the impacts of local and regional pollution. This demands quicker and more ambitious regional reforms to curb pollution from all sources with scale with speed," she said..