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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. In a new report released by the California Air Resources Board, scientists from the University of California at Davis and Berkeley estimate that rising temperatures from climate change will increase ozone levels in California’s major air basins.

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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. Although the Chinese government set fuel economy standards in 2004, like many countries it does not conduct testing to confirm real-world FC rates comply with the standards.

China 278
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Satellite study shows drought-stricken Colorado River Basin states depleting their groundwater

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A new satellite study finds more than 75% of the water loss in the drought-stricken Colorado River Basin since late 2004 came from underground resources. This study is the first to quantify the amount that groundwater contributes to the water needs of western states. —senior author Jay Famiglietti.

Colorado 285
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New phase of globalization could undermine efforts to reduce CO2 emissions

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A new study finds that the growth of carbon production from Chinese exports has slowed or reversed, reflecting a “new phase of globalization” between developing countries that could undermine international efforts to reduce emissions. The paper is published in Nature Communications. —Prof Guan.

Global 170
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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.

Standards 199
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Oregon transit district buying 11 New Flyer electric buses and 7 ABB depot chargers

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Since then, LTD hired a Sustainability Program Manager and conducted carbon footprint analysis of its operations to measure the impacts and benefits of public transit on climate change. In assessing its transition to sustainable mobility, LTD employed a partnership with the University of Oregon (UO) to study opportunities and challenges.

Oregon 312
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Study Highlights the Importance of Considering Climate Effects of Non-CO2 Emissions from Transport in Mitigation Strategies and Policies

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The study by Nadine Unger, Drew Shindell and James Wang will appear in an upcoming issue of the journal Atmospheric Environment. The study applied the NASA Goddard Institute for Space Studies (GISS) model for Physical Understanding of Composition-Climate INteractions and Impacts (G-PUCCINI). Unger et al. Unger et al.

Climate 150