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Pollution plumes in Paris air are richer in gaseous aromatic compounds than in LA; gasoline engines main source of VOCs

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The study also shows that the proportion of gaseous aromatic compounds—apart from benzene—in hydrocarbon emissions is two to three times greater in pollution plumes in Paris than in Los Angeles, even though the total quantity of hydrocarbons emitted in Los Angeles remains considerably greater than in Paris.

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Stanford Professor Urges EPA to Include Black Carbon in Endangerment Finding

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In testimony for the US Environmental Protection Agency (EPA) public hearing ( earlier post ) on the proposed endangerment finding for greenhouse gas emissions under the Clean Air Act ( earlier post ), Stanford Professor Mark Jacobson urged the EPA to include black carbon in the finding. F, with about 40% due to ozone.

Carbon 150
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Study estimates ~4M children worldwide develop asthma each year because of NO2 air pollution

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Improving access to cleaner forms of transportation, like electrified public transport and active commuting by cycling and walking, would not only bring down NO 2 levels, but would also reduce asthma, enhance physical fitness, and cut greenhouse gas emissions. —Susan Anenberg.

Pollution 360
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Field study finds soot particles absorb significantly less sunlight than predicted by models; climate models may be overestimating warming by BC

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Although viewed as a potential target in the global effort to reduce climate change, atmospheric black carbon particles absorb significantly less sunlight than scientists have predicted, according to a new study by an international team of researchers, published in the journal Science. Earlier post.).

Climate 261
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Berkeley study identifies diesel as main source of vehicular secondary organic aerosols

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The use of petroleum-derived fuels is an important source of reactive gas-phase organic carbon that provides key precursors to the formation of secondary OA (SOA) and tropospheric ozone. The team used a chemical mass balance model to examine the contributions from each source to reactive gas-phase organic carbon.

Diesel 281
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California Energy Commission adopts $100M investment plan for 2013-2014 for green vehicles and fuels

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The program funds projects to encourage the development and use of new technologies and alternative and renewable fuels, including electricity, natural gas, biomethane, hydrogen, and gasoline and diesel substitutes, such as cellulosic ethanol (derived from woody materials, including agricultural waste), and biodiesel from waste grease.

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California to award $23.6M for zero-emission drayage trucks at seaports; BYD, Kenworth, Peterbilt, Volvo

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A fourth team, involving both Peterbilt and Kenworth, partnered with BAE Systems, will be deploying a truck that uses a natural gas engine to recharge the batteries and provide the capability to operate in zero emission mode. Volvo will be deploying a plug-in hybrid electric diesel truck under the Mack brand.

Peterbilt 150