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Study finds methane leaks from three large US natural gas fields in line with EPA estimates

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We are beginning to get a sense of regional variation in methane emissions from natural gas production. The gas fields we studied for this paper produced about 20% of the natural gas in the United States, and more than half the shale gas, so this moves us closer to understanding methane leaks from US natural gas production.

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NASA satellite images highlight US air quality improvement with reduction of NO2

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The gas is produced primarily during the combustion of gasoline in vehicle engines and coal in power plants. Measurements of nitrogen dioxide from OMI depict the concentration of the gas throughout a column of air in the troposphere, Earth’s lowest atmospheric layer.

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Successful Engineering Validation Flight of US Commercial Jet Using 40:60 Synthetic Jet Fuel Blend

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The aircraft departed Denver International Airport and climbed to an altitude of 39,000 feet where the onboard team collected data on the performance of the fuel during several maneuvers, including taxi, takeoff, climb, cruise, auxiliary power unit start, descent and approach.

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EPA proposes rule for nationwide 30% cut in GHG from existing power plants by 2030 relative to 2005

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The US Environmental Protection Agency (EPA) released the already widely-discussed (albeit without much detail) “Clean Power Plan” proposal, which mandates a national average 30% cut in greenhouse gas emissions from existing power plants from 2005 levels by 2030. The use of coal by the power sector will decrease by roughly 30 to 32% in 2030.

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Modelling the Impact of PHEVs on Ozone in Denver

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Researchers at the University of Colorado, Boulder and the National Renewable Energy Laboratory (NREL) modeled the emissions impact had plug-in hybrid electric vehicles (PHEVs) replaced light duty gasoline vehicles in the Denver, Colorado area in summer 2006. Ozone concentration increases were modeled for small areas near central Denver.

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Study concludes that NG leakage higher than reflected in inventories; transportation fuel climate benefits questioned

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A review of 20 years of technical literature on natural gas (NG) emissions in the United States and Canada comprising more than 200 papers has concluded that official inventories consistently underestimate actual CH 4 emissions due to leakage from the natural gas system. Definitions of error bar bounds vary between studies. (US,

Climate 247
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Proud of its roots

Electric Auto Association

The Denver EAA chapter is still dedicated to its core mission nearly 50 years after its founding. Members of the Denver Electric Vehicle Council tour the Xcel Energy Cherokee power plant. We did a tour of the Xcel Energy power plant in Denver where we got to see the different generators. Air Force Academy. “We