40% of air pollutants in Capital from outside NCR, says study
Source: The Pioneer, Date: October , 2016
The level of pollution caused by fine particulate matter (PM 2.5) in Delhi will continue to exceed normal limits even if all emissions inside the city were stopped, as over 40 per cent of it originates from outside the NCR, a study has found. About 60 to 80 per cent of ozone concentration in Delhi was also attributed to sources outside the city in the report, prepared jointly by TERI and the University of California, San Diego. “This study finds that in-house sources in Delhi contribute about 32 per cent (10-65 per cent) of the air pollution in Delhi, while NCR (National Capital Region) sources (other than Delhi) contribute an additional 25 per cent (13-37 per cent).“The remaining 43 per cent (25-63 per cent) is the background due to sources outside of NCR,” the report says.