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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.

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Canada publishes proposed regulations for criteria pollutants from locomotives

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This marks Canada’s first regulation of air pollutant emissions from locomotives. CACs include NO x ; particulate matter (PM); hydrocarbons (HC), carbon monoxide (CO); and sulfur oxides (SO x ). 1993–2004. 2002–2004. 1973–1992. 2005–2011. 2012–2014. 2015 or later. Switch locomotive emission standards. 1973–2001.

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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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Latest EPA automotive trend report shows MY 2017 fleet fuel economy of 24.9 mpg; new record

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Since MY 2004, fuel economy and CO 2 emissions have improved in eleven out of thirteen years. Since 2004, CO 2 emissions have decreased 23%, or 104 g/mi, and fuel economy has increased 29%, or 5.6 miles per gallon, slightly higher than MY 2016, and a record high overall. Estimated Real-World CO 2 and Fuel Economy. Source: EPA.

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CRC ACES Phase 2 report finds emissions from modern heavy-duty diesels well below required levels

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2010 engines emissions reduction relative to 2010, 2007, and 2004 US emission standards. For a number of the most important pollutants, levels were substantially lower than required by regulations. These reductions came while emissions of fine particles were also 92% lower than the 2010 standard 99% lower than 2004 emissions.

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EPA SmartWay honors 44 freight carriers for exceptional supply chain efficiency

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Since 2004, SmartWay Partners have avoided emitting more than 72 million metric tons of carbon pollution, while saving more than 170 million barrels of oil and $24.9 billion in fuel costs—equivalent to eliminating annual energy use in over six million homes.

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Peking University team develops method for modeling historical global black carbon emissions from motor vehicles with reduced uncertainty

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Researchers at Peking University have developed a new methodology to model black carbon (BC) emissions from diesel and gasoline motor vehicles. Black carbon is a key short-lived climate change forcer ( earlier post ) and motor vehicles are important sources of BC in the environment. Credit: ACS, Wang et al. Click to enlarge.

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