Silicon Investor (SI) -- The First Internet Community

STOCKTALK

We've detected that you're using an ad content blocking browser plug-in or feature. Ads provide a critical source of revenue to the continued operation of Silicon Investor. We ask that you disable ad blocking while on Silicon Investor in the best interests of our community. If you are not using an ad blocker but are still receiving this message, make sure your browser's tracking protection is set to the 'standard' level.

Politics : The Environmentalist Thread -- Ignore unavailable to you. Want to Upgrade?

To: Elmer Flugum who wrote (5815)	2/3/2006 9:53:31 PM
From: Skywatcher	Read Replies (4) \| Respond to of 36917

Global warming boosting Greenland glacier flow By Jeremy Lovell1 hour, 41 minutes ago Two major glaciers in Greenland have recently begun to flow and break up more quickly under the onslaught of global warming, a new study said on Friday, raising the specter of millions drowning from rising sea levels. The report from the University of Swansea's School of the Environment and Society said the Kangerdlugssuaq and Helheim glaciers had doubled their rate of flow to the ocean over the past two years after steady movement during the 1990s. This spurt meant that current environmental models of the rate of retreat of Greenland's giant ice sheet -- which could add seven meters to the height of the world's oceans if it disappears -- had underestimated the problem. "It seems likely that other Greenland outlets will undergo similar changes, which would impact the mass balance of the ice sheet more rapidly than predicted," the study said. It said the fact that the two major outflow glaciers had shown the same sudden acceleration despite being more than 300 km apart suggested the cause was not local but more likely climatic or oceanic in origin. "In both of these glaciers the acceleration and retreat has been sudden, despite the progressive nature of warming and thinning over some years," the report said. "The longevity of this flux increase is unknown but could be substantial," it added. The report followed a warning earlier this week from Britain's Hadley Center for Climate Prediction and Research -- a branch of the Meteorological Office -- that the Greenland ice sheet could be disappearing faster than previously thought. The ice sheet contains one-tenth of the world's freshwater reserves. Scientists predict that global average temperatures will rise by between one and six degrees Celsius this century unless urgent action is taken now to cap and reduce carbon emissions. Even a rise of three degrees could result in cataclysmic species loss, melting polar icecaps raising sea levels by many meters and wholesale famine and disease. Greenland is only part of the picture, and there is also evidence of local warming and melting on the giant Western Antarctic ice sheet. Scientists said on Monday the world had to halt greenhouse gas emissions and reverse them within two decades or watch the planet spiralling toward destruction. The first phase of the global Kyoto protocol on cutting greenhouse gas emissions runs until 2012, and negotiations have only just started on finding a way of taking it beyond that. The United States, the world's biggest polluter, has rejected both the protocol in its current form and any suggestion of expanding or extending it.