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Study: surface ozone in India in 2005 damaged 6M tonnes of crops, enough to feed 94M people in poverty

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Ozone, the main component of smog, is a plant-damaging pollutant formed by emissions from vehicles, cooking stoves and other sources. New research shows that ozone pollution damaged millions of tons of wheat, rice, soybean and cotton crops in India in 2005. Surface ozone pollution in India damaged 6 million metric tons (6.7

Ozone 239
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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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Study identifies Bakken Formation alone as responsible for ~2% of global ethane emissions

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The Bakken Formation, a shale oil and gas field in North Dakota and Montana, is emitting roughly 2% (about 250,000 tons per year) of the globe’s ethane, according to new study led by researchers at the University of Michigan. Between 2005 and 2014, the Bakken’s oil production jumped by a factor of 3,500, and its gas production by 180.

Ozone 150
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Emissions of potent GHG HFC-23 have grown, contradicting reports of huge reductions

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Despite reports that global emissions of the potent greenhouse gas, HFC-23, were almost eliminated in 2017, an international team of scientists, led by the University of Bristol, has found atmospheric levels growing at record values. This would have been a big win for climate. —co-author Dr Matt Rigby.

Emissions 199
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Study finds that environmental impact of corn-ethanol E85 is 23% to 33% higher than that of gasoline; environmental problem-shifting

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eutrophication; ET = ecological toxicity; FEC = fossil energy consumption; WU = water use; LO = land occupation; “The rest” includes acidification; smog formation; ozone layer depletion; and human health effects. GW = global warming; Eut. Credit: ACS, Yang et al. Click to enlarge. Credit: ACS, Yang et al. Click to enlarge.

Gasoline 357
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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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Researchers report on potential long-range atmospheric emissions impacts of increased ethanol fuel use in North America

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They estimated year-2005 North American ethanol emissions of 670 GgC/y, with 440 GgC/y from the continental US. This is accompanied by a modest regional decrease in surface ozone (of order 1%). Numbers inset give the total North American ethanol source. Labels at left are months (e.g., DJF = December, January, February).