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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.

2004 225
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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.

Universal 218
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EPA: US greenhouse gases up 2% in 2013; increased coal consumption, cool winter

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Total US greenhouse emissions were 6,673 million metric tons of carbon dioxide equivalent in 2013, an increase of 2% (127.9 billion gallons in 2001 to 1.4 MMT CO 2 in 2004, and since then have declined about 13%. Climate Change Emissions' MMT CO 2 Eq.) Total US emissions have increased by 5.9% from 1990 to 2013.

2013 150
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Devil in the Details: World Leaders Scramble To Salvage and Shape Copenhagens UNFCCC Climate Summit

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Although most countries have already revealed their opening emissions reduction proposals, UNFCCC Executive Secretary Yvo de Boer pointed out Thursday that “ we still await clarity from industrialized nations on the provision of large-scale finance to developing countries for immediate and long-term climate action. by Jack Rosebro.

Climate 236
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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.

Climate 150
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Updated Life Cycle Analysis of Soybean Production and Products Show Environmental Improvements

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Currently, the data included in the Department of Energy’s US Life Cycle Inventory is based on three years, 1998 to 2001. This LCA project is based on US agricultural data for the 2001-2007 period. Key findings of the study include: Average soybean yield for the 2004-2007 time period was 42.35 kg (for the 3.36 kg (for the 3.36

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Annual Increase in Global CO2 Emissions Halved in 2008; Decrease in Fossil Oil Consumption, Increase in Renewables Share

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In China, oil consumption increased by 3% in 2008, according to BP data, which was down from 5% in 2007 and 8%, on average, since 2001. In total, CO 2 emissions from the US and the European Union decreased by about 3% and 1.5%, respectively, in 2008, Although China’s emissions showed an increase of 6%, this is the lowest increase since 2001.

2008 170