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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. —Cappa et al. Credit: Cappa et al.

Climate 261
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GISS study finds applying stricter non-CO2 vehicle emission standards worldwide would yield climate benefits in addition to major health and agricultural benefits

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Climate response to non-CO 2 vehicle emissions. Bars on the right show uncertainty ranges for 2070, including contributions from both forcing and climate sensitivity (67%; CI). Bars on the right show uncertainty ranges for 2070, including contributions from both forcing and climate sensitivity (67%; CI). Shindell et al.

Climate 231
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EPA report to Congress finds a strong scientific and technical foundation for mitigating black carbon emissions

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The US Environmental Protection Agency (EPA) has submitted its final Report to Congress on Black Carbon , in response to an October 2009 request from Congress to advance efforts to understand the role of black carbon (BC) in climate change. —Report to Congress on Black Carbon. Earlier post.). Earlier post.).

Congress 252
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NOAA greenhouse gas index continues climbing; 1.29 in 2010

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NOAA’s updated Annual Greenhouse Gas Index (AGGI), which measures the direct climate influence of many greenhouse gases such as carbon dioxide and methane, shows a continued steady upward trend. It also includes several chemicals known to deplete Earth’s protective ozone layer, which are also active as greenhouse gases.

2010 199
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Up close and personal with Volkswagen’s e-Golf carbon offset project: Garcia River Forest

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In 2014, Volkswagen of America announced that starting with the launch of the zero-tailpipe emissions battery-electric 2015 e-Golf ( earlier post ), it would invest in projects to offset the carbon emissions created from the e-Golf on a full lifecycle basis: production, distribution and up to approximately 36,000 miles (57,936 km) of driving.

Carbon 150
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NASA GISS Study Finds That Methane Has an Elevated Warming Effect Due to Interactions With Aerosols

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In particular, the study led by Drew Shindell found that methane emissions have a larger warming impact due to those interactions than accounted for in current carbon-trading schemes or in the Kyoto Protocol. Because the latter was a $126 billion/year market in 2008, even small differences in GWPs can have large economic consequences.

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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. This study highlighted the environmental impacts of corn ethanol in comparison with gasoline. GW = global warming; Eut.

Gasoline 357