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Study finds changes in the Arctic sea ice cover may be driving changes in atmospheric chemistry

Green Car Congress

Bromine also can remove ozone from the lowest layer of the atmosphere, the troposphere. Despite ozone’s beneficial role blocking harmful radiation in the stratosphere, ground-level ozone is a harmful pollutant. Bromine then reacts with a gaseous form of mercury, turning it into a pollutant that falls to Earth’s surface.

Mercury 210
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Renault makes public its lifecycle study of Fluence ICE vs Fluence EV

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The study used the series production versions launched in 2011, with the assumption of operation for 150,000 km (93,205 miles). Since the BEV version has a shorter range, Renault noted, the way in which the miles are accumulated could differ from that of the ICE vehicles.). Photochemical Ozone Creation Potential (kg Ethene equivalent).

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California issues draft plan for more efficient, less polluting freight system

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Key components of the Action Plan include: A long-term 2050 vision and guiding principles for California’s future freight transport system. Foster future economic growth within the freight and goods movement industry. Improve freight system efficiency 25% by 2030.

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Calif. ARB releases GHG scoping plan update; more ZEVs, “LEV IV”, MD and HD regulations; ZEV for trucks; more LCFS

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The update identifies eight key sectors for ongoing action: Energy; Transportation, fuels, land use and infrastructure; Agriculture; Water; Waste management; Natural lands; Short-Lived Climate Pollutants (such as methane and black carbon); and Green Buildings. Transportation. million zero emission vehicles on its roads by 2025.

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Researchers describe the “where” and “when” of life cycle emissions from gasoline and ethanol in the US

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Contributions of regions to total life cycle emissions for three fuels (µg per vehicle-mile traveled per km 2 land area). 60% of ground-level ozone (O 3 ) precursors, 6% of fine particulate matter (PM 2.5 ), and 22% of greenhouse gases (GHGs) emitted. Dashed lines show US average emissions. Credit: ACS, Tessum et al. Click to enlarge.

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EPA says methane emissions from natural gas production have dropped 36% from 2007-2011

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The finding may have an impact on future regulation of fracking for natural gas production, as opponents of the technology have pointed to higher rates of methane leak as being an argument against it. The figure includes the direct effects and those indirect effects due to the production of tropospheric ozone and stratospheric water vapor.)

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The New Supersonic Boom

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Meanwhile, environmentalists were voicing concern—about how noisy such aircraft are taking off, about the possibility that their high-altitude emissions would erode the ozone layer, and about how disruptive the sonic booms would be. Boom has stated that its plane will go supersonic only over water. Boom Supersonic.