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Talk about a climate change: A University of Illinois at Chicago professor says he has found new evidence that a massive meltdown of polar ice 8,200 years ago put North America into a deep freeze for a century.
The "most dramatic climate change in the last 10,000 years" followed a flood of fresh water from a glacial reservoir into the salty water of the Gulf Stream, which controls our continent's weather. That led to a 43-degree temperature drop, said UIC's Torbjorn Tornqvist.
Scientists have determined that the ice in Greenland and the Arctic is melting so rapidly that much of it could be gone by the end of the century. (See photos from the Arctic.)
The results could be catastrophic for polar people and animals, while low-lying lands as far away as Florida could be inundated by rising sea levels. (Read a story, see a map of how warming may toast Florida's coast).
The Arctic Climate Impact Assessment was released yesterday. It will be discussed by the Arctic Council (the governments of Canada, Denmark, Finland, Iceland, Norway, the Russian Federation, Sweden, and the U.S., as well as six indigenous-peoples organizations) at a meeting in Iceland today.
The four-year study of the Arctic climate involved an international team of more than 300 scientists. They used a number of climate models and made a "moderate estimate" of future emissions of carbon dioxide and other greenhouse gases that are widely believed to be contributing to the recent warming trend of the Earth's climate.
The study concluded that in Alaska, western Canada, and eastern Russia, average temperatures have increased as much as 4 to 7 degrees Fahrenheit (3 to 4 degrees Celsius) in the past 50 years, nearly twice the global average. Temperatures are projected to rise 7 to 13 degrees Fahrenheit (4 to 7 degrees Celsius) over the next hundred years.
Originally posted by the dustman
the ice age will come in 2012 when the earth spins on its own axis
There are some alternatives on the horizon, including coal gasification technology that produces a concentrated effluent of CO2 that is easier to capture and store underground.
But whatever technology is used, the developed world must work with the developing world to prevent the release of CO2 from coal combustion into the atmosphere if the goal of CO2 stabilisation is to be achieved.
This analysis identifies a new opportunity for the US to play a leadership role in reducing our exposure to future climate change.
One could envision bilateral agreements between the US and China, for example, in which the US provides financial assistance to US companies who produce energy in China without emitting CO2, while China provides access to its rapidly growing energy market.
posted on 13-12-2004 at 01:28 PM
Hrmmmm.. global warming leading to global cooling.. if I didn't know better I would say it sounds like a self-regulating system... oh wait it is..
Rather than everyone running around worrying about everything, we need to better UNDERSTAND everything. We still don't have a really good handle on the large global climate system as a whole.
Originally posted by radiant_obsidian
we run around spending trillions on an international space station that may never get finished......yet we dont bother spending the money and time it takes to understand the world around us
If you so wish, may I suggest a read: The Coming Global Superstorm by Art Bell and Whitley Strieber.