Clean Air Initiative: GlobalClean Air Initiative: AsiaIniciativa del Aire Limpio: América LatinaClean Air Initiative: Sub-Saharan Africa
Advanced Search
Countries
Topics
CAI Listserv
Air Quality Newsletters
Opportunities

Better Air Quality (BAQ) 2008
was held in Bangkok, Thailand
12-14 November 2008

Join the CAI-Asia Partnership

Climate Impacts of Air Quality Policy: Switching to a Natural Gas-Fueled Public Transportation System in New Delhi
Conor C. O. Reynolds and Milind Kandlikar

Abstract:

Between 2001 and 2003, public transport vehicles in New Delhi were required to switch their fuel to natural gas in an attempt to reduce their air pollution impacts. This study examines the climatic impacts of New Delhi's fuel switching policy, and outlines implications for such efforts in rapidly industrializing countries. Natural gas is mostly composed of methane, an important greenhouse gas. Emitted aerosols (black carbon, particulate organic carbon, and sulfate) also cause radiative forcing. We find that methane and black carbon emissions are critical contributors to the change in carbon dioxide equivalent [CO2(e)] emissions. In New Delhi, the switch to natural gas results in a 30% increase in CO2(e) when the impact of aerosols is not considered. However, when aerosol emissions are taken into account in our model, the net effect of the switch is estimated to be a 10% reduction in CO2(e), and there may be as much as a 30% reduction in CO2(e). There is significant potential for emissions reductions through the United Nations Framework Convention on Climate Change (UNFCCC) Clean Development Mechanism for such fuel switching projects.

Link: http://pubs.acs.org/cgi-bin/abstract.cgi/esthag/asap/abs/es702863p.html

Climate change, CNG, Public Transport
Quick Links

Who we are:
- CAI-Asia Center
- CAI-Asia Partnership
- Country Networks

Key documents:
- Annual Report 2008
- Fuel Roadmap
- Country Synthesis Reports
- Compendium | CitiesACT.org
- Benchmarking Report
- Quarterly Report (Center)
- Newsletters
................................more >>

Country / City
India
Related Topics
Climate change
Climate change > Science linkage - air pollution and climate change

Secretariat: CAI-Asia Center, 3510 Robinsons Equitable Tower, ADB Ave., Ortigas Center, Pasig City, Philippines 1605
Tel: +632 3952843 to 45 / Fax: +632 3952846