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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. 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 Asian Monsoon Carries Pollution Into the Stratosphere

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The Asian monsoon circulation provides an effective pathway for pollution from Asia, India, and Indonesia to enter the global stratosphere, according to a new international study led by scientists at the National Center for Atmospheric Research (NCAR) in Boulder, Colo. NCAR scientist William Randel, the lead author.

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EPA SmartWay honors 44 freight carriers for exceptional supply chain efficiency

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EPA’s SmartWay Transport Partnership is a market-driven initiative that empowers businesses to move goods in the cleanest, most energy-efficient way possible to protect public health and reduce the emissions that contribute to climate change. billion in fuel costs—equivalent to eliminating annual energy use in over six million homes.

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Mexico proposes new heavy-duty vehicle emission standards aligned with Euro VI and EPA 2010

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The current limit values in Mexico are equivalent to Euro IV or EPA 2004 standards. The climate benefits of these emissions reductions will amount to the equivalent of 54 million tons of CO 2 (using a 20-year global warming potential). And the climate benefits of the reductions in black carbon emissions are also a great step forward.

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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 on-road transportation (ORT) and power generation (PG) sectors are major contributors to CO 2 emissions and a host of short-lived radiatively-active air pollutants, including tropospheric ozone and fine aerosol particles, that exert complex influences on global climate. Unger et al. Click to enlarge. Unger et al.

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California ARB awards $7M for ultra-low NOx heavy-duty diesel truck demo project with Achates opposed-piston engines

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California’s South Coast Air Quality Management District, the San Joaquin Valley Air Pollution Control District and the Sacramento Metropolitan Air Quality Management District also are investing in the project.