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Climate: Two other Greenhouse Gas worry scientists  

 


Carbon dioxide (C02) is not the only gas that worry specialists climate. Because the air concentration of two other powerful gas with greenhouse emissions, that grow unexpectedly last two years, according to scientific studies to be issued in coming weeks.

 

If the C02 gas remained the most pant concern because of its high levels and its fast-growth, methane has a greenhouse effect more than twenty times stronger and nitrogen trifluoride (NF3) has a power warming thousands of times greater than carbon dioxide emitted by burning coal, oil and other fossil fuels car. And those two gases are not reflected in estimates of climate change.
Methane emitted by landfills, coal mining and natural gas as well as agricultural activities have an impact about three times lower on global warming that the C02 of human origin. But scientists are primarily interested billions of tons of methane from the decomposition of plants and trapped for thousands of years in the basement frozen (permafrost) in the Arctic.
With the melting of permafrost, the gas could escape and aggravate global warming. It is too early to draw definitive conclusions on data reported, but specialists fear of being being present at the beginning of the liberation of methane in the Arctic.
D'after a study published Oct. 31 in the journal Geophysical Research Letters, the atmospheric levels of methane measured res every 40 minutes by instructors in this region have suddenly increased in 2006 after almost eight years of stability. The amount of methane in the air jumped nearly 25.4 million tonnes between June 2006 and October 2007 and is currently evaluating a
more than 5.6 billion tons.
"If this goes on, it's bad news," said Ron Prinn, specialist of the atmosphere at the Massachusetts Institute of Technology (MIT) and principal author of the study. "This is a warning signal. We see smoke, and we must see if the fire that we fear so much. When methane progresses, climate change is accelerating," he added . A scientific study published last summer in certify levels of methane up to 10,000 times normal in the eastern sea-Siberian, according Orjan Gustafsson of the University of Stockholm. It reported "real fields of methane bubbles" in the Arctic Ocean. As a nitrogen trifluoré is a Greenhouse Gas Atmospheric 17,000 times more powerful in equal quantity as carbon dioxide (C02), is at least four times more prevalent in the atmosphere-qu'es timé so far, according to a study published Thursday.
Trifluoré Nitrogen gas is used in the manufacture of flat panel LCD and solar cells. micro-electronic circuits.
Many industries have used this gas in recent years as alternative to product per-fluorocarbons, potential gas emissions.
This research, based on data from a network of ob-servation and measures for NASA, the U.S. space agency, and apply new building on technical analysis shows that there were 4200 tonnes trifluoré nitrogen in the atmosphere in 2006 and 1,200 tons as initially estimated. For 2008, the volume of gases in the atmosphere is 5400 tons, a tonnage increased by 11% per year on average, said Ray Weiss, the Scripps Institution of Oceano-graphy in La Jolla (California, west), the principal author of this work.
Faced with the growing use of gas by industry and the fact that its emissions into the atmosphere were poorly understood, scientists have recently recommended to add to the list of Greenhouse Gas regulated in the Kyoto Protocol reached in 1997 between 182 countries. Some industrialized countries have not ratified the treaty, including the United States. Trifluoré Nitrogen gas is used in the manufacture of flat panel liquid crystal solar cells and micro-electronic circuits. . Many industries have used this gas in recent years as alternative to product per-fluorocarbons, potential gas emissions.
 
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