INVENTORY OF GREEN HOUSE GASES AND OTHER POLLUTANTSFROM THE TRANSPORT SECTOR: DELHI

Delhi is the most urbanized city in India. Inventory estimates for the emissions of greenhouse gases andother pollutants like CO2, CO, NOx, and volatile organic compound from transport sector in Delhi, hasbeen developed using bottom up approach provided by Intergovernmental panel on climate change(IPCC-1996). The impacts of policy option in transport sector like introduction of Compressed NaturalGas for public transport in Delhi and introduction of Euro-l norms for vehicles have also been estimated.The emission inventory reveals that total emission of pollutants from different categories vehicles haveincreased during the period 1990-2000. For example, the CO2 emission (1000, tones) from gasolinedriven vehicle (MC/SC) in Delhi has increased from 766 in 1990-91 to 11 87 in 1999-00. The dieseldriven vehicles Light commercial vehicles in Delhi has contributed to 577 CO2 in 1990-91, whichincreased to 9779 in 1999-00. For other pollutants also, which have been estimated here, an increase intotal emission from gasoline and diesel driven vehicles has been observed during this 1990-2000 periods.This study shows that the over all contribution of pollutants in the total emissions from gasoline anddiesel driven vehicles have increased in Delhi during this period. The present study also shows that theimplementation of Euro-I in 2000 in Delhi has resulted in the decrease of total emission of CO, HC,NOx, and volatile organic compound for all the classes of vehicle for which the revised vehicleemissions norms were implemented. However this decrease in emission has become inefficient due toincrease in vehicle population .