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Study Finds On-Road Transportation Sector the Greatest Net Contributor to Atmospheric Warming Now and in Mid-Term; Power Sector Takes the Lead by 2050

Green Car Congress

Radiative forcing due to perpetual constant year 2000 emissions grouped by sector for 2020 (left) and 2100 (right) showing the contribution from each species. Cars, buses, and trucks release pollutants and greenhouse gases that promote warming, while emitting few aerosols that counteract it. From Unger et al., Click to enlarge.

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Study suggests high-mileage light-duty fleets contribute higher emissions and emissions share than expected

Green Car Congress

used data collected at three US sampling sites: (1) in Washington State on the taxi and shuttle loop at the Seattle−Tacoma International Airport; (2) a long-term light-duty site in California located on I-10 between Santa Monica and downtown Los Angeles; and (3) a long-term light-duty site in Illinois located in the northwest suburbs of Chicago.

Emissions 150
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Black carbon is a much larger cause of climate change than previously assessed; about twice previous estimates, and 2/3 the effect of CO2

Green Car Congress

Emission rates of BC in the year 2000 by region, indicating major source categories in each region. Total global emissions of black carbon using bottom-up inventory methods are 7500 Gg yr -1 in the year 2000 with an uncertainty range of 2000 to 29000. Source: Bond et al. Click to enlarge. W m -2 (+0.17 W m -2 range).

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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. This scenario assumes that 100% of the study region’s vehicle fleet will be HEVs by 2050—half of which will be grid plug-in HEVs—but that the fleet will otherwise remain unchanged from 2000 in terms of its relative composition of different vehicle size classes. Stone et al.

Emissions 150
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Study finds isopropanol-n-butanol-ethanol and gasoline blend viable as alternative fuel

Green Car Congress

Researchers from the University of Illinois and colleagues in China investigating the performance, combustion and emission characteristics of a port fuel-injection SI engine fueled with isopropanol-n-butanol-ethanol (IBE)-gasoline blends have concluded that an IBE30 blend could be a good alternative to gasoline. 1 compression ratio).

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The EV Transition Explained: Policy Roadblocks

Cars That Think

The US electrical power industry alone “is influenced by a variety of decision-makers, including over 200 investor-owned utilities, 10 federal power authorities, over 2000 publicly-owned utilities, about 900 rural electric cooperatives, seven RTOs [ Regional Transmission Organizations ], 48 state regulatory bodies [e.g.,

Grid 98
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Perspective: Regional Greenhouse Gas Cap-and-Trade Programs May be the Solution

Green Car Congress

Cap-and-trade was first tried on a significant scale twenty years ago under the first Bush administration as a way to address the problem of airborne sulfur dioxide pollution–widely known as acid rain–from coal-burning power plants in the eastern United States. INTRODUCTION. In 2015–nearly 90% of emissions. Midwestern Accord covers six U.S.

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