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California ARB: GHG emissions fell below 1990 levels for first time in 2016; down 13% from 2004 peak; transportation emissions up 2%

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The California Air Resources Board (CARB) announced that greenhouse gas emissions in California in 2016 fell below 1990 levels for the first time since emissions peaked in 2004—a reduction roughly equivalent to taking 12 million cars off the road or saving 6 billion gallons of gasoline a year. How the inventory is compiled.

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Study Concludes Warming Climate Will Increase Ozone Levels in Major California Air Basins; Climate Change and Regional Air Quality Are Intertwined Problems

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Illustration of projected ozone changes in the South Coast region due to climate change in 2050. The study also predicts that peak concentrations of dangerous airborne particles will increase in the San Joaquin Valley due to the effects of climate change on wind patterns. Click to enlarge. Kleeman, Ph.D.

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UCR study finds ultra-low emission natural gas bus exceeds federal and state NOx standards; as low as 0.0007g/bhp-hr

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A study by the University of California, Riverside College of Engineering Center for Environmental Research and Technology (CE-CERT) found that a Los Angeles County Metropolitan Transit Agency (Metro) bus equipped with an ultra-low emission natural gas engine performs significantly cleaner than its certification standards across all duty cycles.

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Study finds 12-30% fuel consumption gap between certified and real-world use in China

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Since carbon dioxide emissions are highly correlated with fuel consumption (FC), fuel consumption regulation is a useful policy instrument to combat climate change. —Dror et al.

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EPA’s annual automotive trends report shows slight increase in fuel economy from MY2017 to MY2018

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Since MY 2004, CO 2 emissions have decreased 23%, or 108 g/mi, and fuel economy has increased 30%, or 5.8 The report also assesses compliance performance for individual automakers, and for the US fleet as a whole, with the greenhouse gas emissions standards for light-duty vehicles.

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Measurements of CO2 and CO in China’s Air Indicate Sharply Improved Combustion Efficiency

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The findings, published in the 21 September issue of Atmospheric Chemistry and Physics , are generally consistent with official Chinese government statistics and could bolster their credibility as international negotiations proceed on commitments of China and other nations to combat climate change. Munger, J. McElroy, M. Nielsen, C.

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World Economic Forum Report: US$515 Billion Per Year Needed in Green Investments

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The report’s authors, Max von Bismarck and Anuradha Gurung from the World Economic Forum, and Chris Greenwood and Michael Liebreich from New Energy Finance, argue that “ enormous investment in energy infrastructure is required to address the twin threats of energy insecurity and climate change. billion) in 2004.

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