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Study Finds Controlling Soot May Be Fastest Method to Reduce Arctic Ice Loss and Global Warming; Second-Leading Cause of Global Warming After CO2

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He also found that soot emissions kill more than 1.5 Greenhouse gases, in contrast, typically persist in the atmosphere for decades—some up to a century or more—creating a considerable time lag between when emissions are cut and when the results become apparent. Tags: Climate Change Emissions. Dessler et al., Guenther et al.,

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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. And hydroxyls drive long chains of reactions involving other common gases, including ozone. Shindell et al.

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Study suggests cap and trade programs do not provide sufficient incentives for energy technology innovation; implications for climate policy

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Respectively, Title IV of the 1990 Clean Air Act and the Ozone Transport Commission/NO x Budget Program.). Policymakers rarely see with perfect foresight what the appropriate emissions targets are to protect the public health and environment—the history is that these targets usually need to get stricter.

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New international Climate and Clean Air Coalition to focus on reduction of short-lived climate pollutants

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Fast action on pollutants such as black carbon, ground-level ozone and methane may help limit near-term global temperature rise and significantly increase the chances of keeping temperature rise below 2 °C (3.6 °F), Moreover, many of these benefits can be achieved at low cost and with significant energy savings. Earlier post.).

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OptiFuel finalizing $2.6M DOE grant to demonstrate RNG hybrid line-haul locomotive

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The program will demonstrate that a suite of commercially available, EPA-rail-certified engines present a near-term, low-risk solution to create an affordable RNG hybrid line-haul locomotive with near zero emissions while simultaneously improving fuel cost by 50%. g/bhp-hr of NOx, a reduction of 400 times. g/bhp-hr of PM.

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ARB releases proposed cap-and-trade regulation for comment; transportation fuels impacted in 2015

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A key part of ARB’s AB 32 Scoping Plan ( earlier post ), the cap-and-trade program provides an overall limit on the emissions from sources responsible for 85% of California’s greenhouse gas emissions. The program is expected to reduce GHG emissions between 18 and 27 MMTCO 2 e in 2020. Over time, the cap will steadily decline.

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Study Concludes that Rocket Launches May Need Regulation to Prevent Ozone Depletion

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The global market for rocket launches may require more stringent regulation in order to prevent significant damage to Earth’s stratospheric ozone layer in the decades to come, according to a new study by researchers in California and Colorado. Darin Toohey.

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