By Patricia Reaney
Reuters May 3, 2006 LONDON - The ozone layer is showing signs of recovering, thanks to a drop in ozone-depleting chemicals, but it is unlikely to stabilize at pre-1980 levels, researchers said on Wednesday.
Depletion of the earth's protective ozone layer is caused by the chemical action of chlorine and bromine released by man-made chlorofluorocarbons (CFCs), which are used in aerosol sprays and cooling equipment. Ozone-depleting chemicals were banned by the 1987 Montreal Protocol which has now been ratified by 180 nations. "We now have some confidence that the ozone layer is responding to the decreases in chlorine levels in the atmosphere due to the leveling off and decrease of CFCs," said Dr Betsy Weatherhead, of the University of Colorado in Boulder. Comment: Sounds like everything is just peachy... right??
|
By MALCOLM RITTER
AP Science Writer May 03 2006 NEW YORK - An important wind circulation pattern over the Pacific Ocean has begun to weaken because of global warming caused by human activity, something that could alter climate and the marine food chain in the region, new research suggests.
It's not clear what climate changes might arise in the area or possibly beyond, but the long-term effect might resemble some aspects of an El Nino event, a study author said. |
AFP
Wed May 3, 2006 |
AP
Tue May 2, 2006 BEIJING - Glaciers in western China's Qinghai-Tibet plateau, known as the "roof of the world," are melting at a rate of 7 percent annually due to global warming, the country's official Xinhua News Agency said.
Xinhua said the figure is drawn from data from China's 681 weather stations over four decades. |
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