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Aug
8
2009
Urban areas may release more methane than thought
Lowest price viagra, Cities may be responsible for more of the world’s methane emissions than previously thought, researchers report in Geophysical Research Letters.
Methane, along with carbon dioxide and nitrous oxide, is a greenhouse gas that helps drive climate change. Alabama AL Ala. , About 582 million tons of methane are produced on Earth every year, with sources ranging from wetland microorganisms to fossil fuel burning, αγοράζουν online viagra. District of Columbia DC D.C. , But scientists aren’t sure how much each source contributes to the total.
Researchers measured greenhouse gas concentrations in the Los Angeles area for almost a year, then analyzed 131 days’ worth of data, Delaware DE Del. . Cheap viagra no rx, They calculated that the region pumped out 400,000 to 600, αγοράσετε viagra, Buy viagra cod, 000 tons of methane annually, or 140, order viagra online, Florida FL Fla. , 000 to 340,000 tons more than an estimate derived from a state inventory, Pennsylvania PA Penn. . New Jersey NJ N.J. , If other cities are similar, they say, order viagra no rx, Viagra kopen, uncatalogued urban emissions could account for 7 to 15 percent of global man-made methane production.
The source of the “extra” methane in the Los Angeles area is unclear, the authors say, Om viagra online. But they speculate that natural gas leaks might be a plausible explanation, lowest price viagra. Comprar viagra de descuento, Since the methane is coming from an urban region, the team is hopeful that emissions can be curbed once the source is identified, Washington WA Wash. , Viagra online stores, says co-author Debra Wunch of the California Institute of Technology. – Roberta Kwok
Source: Wunch, purchase viagra, Kentucky KY Ky. , D. et al, purchase viagra online. Rabatt kaufen viagra, 2009. Emissions of greenhouse gases from a North American megacity, ordering viagra no rx. Cheap viagra online cheap, Geophysical Research Letters DOI: 10.1029/2009GL039825
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