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Study finds that replacement programs that reduce vehicle lifetime can result in increased lifecycle CO2 emissions

Green Car Congress

Effects of changes in the average lifespan of ordinary passenger cars newly registered between 1990-2000 on total induced CO 2 emissions in 2000. They also found that extending the lifetime of a vehicle contributed to a moderate increase in emissions of criteria pollutants (NO x , HC, and CO) during the use phase of the vehicle.

Emissions 218
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GCP Carbon Budget Finds Anthropogenic CO2 Emissions Rose 2% in 2008 Despite Global Financial Crisis; Natural Sinks Not Keeping Pace With Increasing Emissions

Green Car Congress

The authors, under the umbrella of the Global Carbon Project , reported a 29% increase in global CO 2 emissions from fossil fuel between 2000 and 2008 (the latest year for which figures are available), and by 41% between 2008 and 1990, the reference year of the Kyoto Protocol. between 2000 and 2008, compared with 1% per year in the 1990s.

2008 218
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Study: Reducing Future Transportation CO2 Emissions to Kyoto Protocol Levels Will Require Combination of Vehicle Technology and Smart Growth

Green Car Congress

Percent change in median CO2 by scenario relative to 2000. Stone’s study looked at 11 major metropolitan regions (MSAs, Metropolitan Statistical Areas) in EPA Region V (the Midwest) over a 50-year period and assessed four different scenarios: Business-as-Usual Development Scenario (BAU). Stone et al. 2009) Click to enlarge.

Emissions 150