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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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However, these standards will not reduce CO 2 emissions, which is required to mitigate long-term climate change, the team notes. However, these standards will not reduce CO 2 emissions, which is required to mitigate long-term climate change, the team notes. In comparison, the Northern Hemisphere has warmed by about 0.3°C

Climate 231
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Study finds fleet switch from PFI to GDI engines will result in net reduction in global warming

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We estimate ozone and SOA formation potential. Finally, we analyze the potential climate effects of switching a PFI to a GDI fleet. Therefore, the secondary organic aerosol and ozone formation potential of the exhaust does not depend on engine technology. —Saliba et al. May, Greg T. Drozd, Allen H. 6b06509.

Fleet 207
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Study finds climate impact of long distance trip can vary by factor of 10 depending upon mode, efficiency and occupancy

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compared the specific climate impact of long-distance car travel with bus, train, or air trips. They accounted for both CO 2 emissions and emissions of ozone precursors (NO x , VOC, CO) and aerosols (BC or black carbon, OC, SO 2 ) as well as cloud effects (aviation-induced cirrus clouds and contrails)—i.e., fuel consumption.

Climate 186