Tag Archives: estimate

More Potent than Carbon Dioxide, Nitrous Oxide Levels in California May be Nearly Three Times Higher Than Previously Thought

Berkeley Lab researchers devise a new method to estimate state’s greenhouse gas emissions.

Using a new method for estimating greenhouse gases that combines atmospheric measurements with model predictions, Lawrence Berkeley National Laboratory (Berkeley Lab) researchers have found that the level of nitrous oxide, a potent greenhouse gas, in California may be 2.5 to 3 times greater than the current inventory.

At that level, total N2O emissions—which are believed to come primarily from nitrogen fertilizers used in agricultural production—would account for about 8 percent of California’s total greenhouse gas emissions. The findings were recently published in a paper titled “Seasonal variations in N2O emissions from central California” in Geophysical Research Letters. Earlier this year, using the same methodology, the researchers found that levels of methane, another potent greenhouse gas, in California may be up to 1.8 times greater than previous estimates. (more…)

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comScore Reports $41.9 Billion in Q3 2012 U.S. Retail E-Commerce Spending, Up 15 Percent vs. Year Ago

comScore Chairman Gian Fulgoni to Present Overview of Q3 2012 E-Commerce Trends in Upcoming Webinar

RESTON, VA, November 7, 2012 – comScore, Inc., a leader in measuring the digital world, today released its Q3 2012 U.S. retail e-commerce sales estimates, showing that online retail spending reached $41.9 billion for the quarter, up 15 percent versus year ago. This represents the twelfth consecutive quarter of positive year-over-year growth and eighth consecutive quarter of double-digit growth. (more…)

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