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Study finds scrubbers have lower climate impact than low-sulfur fuel

Green Car Congress

A recent report from CE Delft, an independent research and consultancy organization, regarding the climate impact of Exhaust Gas Cleaning (EGC) systems for the marine industry. This study provides a comprehensive overview of the climate impacts of different options to reduce sulfur emissions.

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Study finds gasoline exhaust contributes more to formation of secondary organic aerosols than diesel

Green Car Congress

Contrary to expectations, exhaust from gasoline vehicles contributes more to the production of secondary organic aerosols (SOA) than exhaust from diesel vehicles, according to a new study by scientists from the Cooperative Institute for Research in Environmental Sciences (CIRES), NOAA’s Earth System Research Laboratory (ESRL) and other colleagues.

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Harvard team finds that the phase of atmospheric secondary organic material affects chemical aging; may require revision of regional and global climate models

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Atmospheric chemists at the Harvard School of Engineering and Applied Sciences (SEAS) have found that the phase of secondary organic materials (SOM) in the atmosphere—solid, semisolid, or liquid—can effect their chemical reactivity (chemical aging) in the atmosphere. (Image courtesy of Kuwata Mikinori.) Click to enlarge.

Climate 252
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Climate Expert: Don't Call It Geoengineering

Cars That Think

The leaders of the world have just returned from the UN's latest climate change summit, COP26 , in which the countries that have signed on to the Paris Agreement upped their commitments to fight climate change. C by the year 2100 , according to Climate Action Tracker. C above pre-industrial levels. C above pre-industrial levels.

Climate 143
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Nevada launches “Clean Cars Nevada” effort; adopting California LEV and ZEV

Green Car Congress

Over the last two years, Governor Sisolak and the Legislature laid the groundwork to put Nevada on a path toward climate resilience. Without taking climate action, the state will fail to make meet the necessary greenhouse gas reduction goals set forth under SB 254 and pursuant to Governor Sisolak’s Executive Order on climate change.

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Comprehensive assessment concludes black carbon second-most important human emission in warming climate

Green Car Congress

A comprehensive assessment of black-carbon climate forcing accepted for publication in the Journal of Geophysical Research: Atmospheres estimates that black carbon, with a total climate forcing of +1.1?W?m m -2 , is the second-most important human emission in terms of its climate-forcing in the present-day atmosphere.

Climate 322
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NASA-led study finds 50 vol% biofuel blend reduces soot particle emissions during aircraft cruising; reduced climatic impact of contrails

Green Car Congress

Of these effects, the largest uncertainties are associated with aviation-induced cloudiness, both directly from contrail-induced cirrus clouds and indirectly from the contribution of black carbon, organic and sulfate aerosols that may act as cloud condensation nuclei and ice nuclei. —Moore et al. Moore, Kenneth L.

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