New Delhi, Nov. 20 -- Not just the national Capital region but all cities in the Indo-Gangetic belt need a common plan to escape the yearly episodes of peak pollution during winters. Delhi cannot solve its pollution crisis without regional cooperation. A regional framework from the perspective of all cities in this belt is required to meet the target of reduction of 20%-30% in pollution levels under the National Clean Air Program (NCAP), said experts.

Experts said that the Indo-Gangetic Plains (IGP) have a complex set of topographical and meteorological conditions that produce a land-locked valley effect, hence allowing pollutants to accumulate. "While city action plans have been prepared, they should be linked with a larger 'airshed' mana...