Real policy is not defensive short-term emergency measures but something proactive spanning multiple years, and acting fast, local and through multiple agencies. Every Diwali, a billion people in India wake up to the news of smog-ridden cities in the aftermath of celebratory fireworks.

In this report, defined (a) the size of NCAP city airsheds (b) the recommended number of ambient air quality monitoring sites in an airshed (c) the operational sampling frequency to support receptor-based source apportionment studies.

Emerging opportunities to capitalize on co-benefits of urban pollution and global climate policy: a paper presented by Dr. Sarath Guttikunda, Delhi at National climate research conference, IIT Delhi, March 5-6, 2010.