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Satellite method provides insight into ozone-NOx-VOCs sensitivity for different locations

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Ozone pollution near Earth’s surface is one of the main ingredients of summertime smog. It is also not directly measurable from space due to the abundance of ozone higher in the atmosphere, which obscures measurements of surface ozone. —Jin et al.

Ozone 150
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HEI launches two new non-tailpipe particulate emission studies

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Emissions from automobile exhaust systems have decreased in recent years due to the introduction of cleaner fuels and new control technologies on internal combustion engines, as well as increases in numbers of hybrid and electric vehicles.

Emissions 353
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CU Boulder study: routine household activities generate air quality on par with major polluted city

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Cooking, cleaning and other routine household activities generate significant levels of volatile and particulate chemicals inside the average home, leading to indoor air quality levels on par with a polluted major city, according to a study by researchers at the University of Colorado Boulder. Earlier post.).

Pollution 207
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Study finds significant slowdown in decrease of NOx emissions in US; implications for air quality management

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They found that levels of pollutants that can contribute to the formation of ground-level ozone, or smog, have failed to continue a fairly steady decline as estimated by the US Environmental Protection Agency. These results show that meeting future air quality standards for ozone pollution will be more challenging than previously thought.

Emissions 150
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Reduction in diesel carbonyl emissions using F-T fuel from coal

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lower ozone formation potential of the carbonyl compounds present than DF under the identical operating conditions. In addition, there was an 18.0–35.8% reduction in total carbonyls and a 3.4–100% 100% drop in individual carbonyls in the constant load/varying speed test mode. CFT had 16.5–44.1% —Hao et al. 2014.05.025.

Coal 210
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MSU team developing bio-isoprene for synthetic rubber production

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Automobile tire producers are looking for alternative solutions for natural rubber made from latex-bearing trees. Sharkey’s research team already has measured rates of isoprene emission from plants that are used by the Environmental Protection Agency to predict lower-atmosphere ozone levels.

Ozone 225
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Study: Urban grime releases NOx when exposed to sunlight

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Researchers at the University of Toronto have found that natural sunlight triggers the release of smog-forming NO x compounds from the grime that typically coats buildings, statues and other outdoor surfaces in urban areas. Among these compounds are nitrogen oxides. —James Donaldson.

Ozone 150