Posted on 11/02/2005 9:30:03 PM PST by NormsRevenge
If humans don't curb use of fossil fuels, the planet will warm 14.5 degrees Fahrenheit by the year 2300. The polar ice caps will disappear and oceans will rise 23 feet (7 meters).
That's the conclusion of climate simulations released today by scientists at the Lawrence Livermore National Laboratory.
At the poles, the average temperature would rise more than 36 degrees Fahrenheit (20 degrees Celsius), the model predicts.
"The temperature estimate is actually conservative because the model didn't take into consideration changing land use such as deforestation and build out of cities into outlying wilderness areas," said Govindasamy Bala of the Laboratory's Energy and Environment Directorate.
The forecast is based on estimated changes in atmospheric carbon dioxide, a so-called greenhouse gas that acts like a blanket to trap heat. Carbon dioxide is a byproduct of coal-fired power planets, automobile engines and other machines that burn fossil fuels.
Today's level of atmospheric carbon dioxide is 380 parts per million (ppm). By the year 2300, the model predicts that amount would nearly quadruple to 1,423 ppm.
Forests would cover the North and South poles.
The carbon dioxide eventually ends up in the oceans, which would become more acidic as a result, the scientists say.
"The doubled-CO2 climate that scientists have warned about for decades is beginning to look like a goal we might attain if we work hard to limit CO2 emissions, rather than the terrible outcome that might occur if we do nothing," said Ken Caldeira, of the Department of Global Ecology at the Carnegie Institution and one of the other authors.
The most drastic changes would come during the 22nd Century, the model predicts. Sea ice cover almost completely disappears by 2150.
Critics charge that computer models cannot accurately predict how much the planet will warm. Few scientists disagree that a warming trend is underway, however. And other studies have found that even if all fossil fuel burning stopped today, temperatures would still rise for at least many decades.
Other studies have generated dire predictions, but few are as dramatic as the new forecast.
"We definitely know we are going to warm over the next 300 years," Bala said. "In reality, we may be worse off than we predict."
Horse Hockey.
They never quit do they? yawn
Translation:..we dont have a clue...but give us a nice fat grant...and we'll fake it...
Forests would cover the North and South poles.
Buy now! Cash in in only 200 years!
Imagine that. A 300-year forward projection!!! And to think that we pay these people good money to play on those big supercomputers. More taxpayer money down the proverbial rathole. Sigh.
These folks are becoming a parody of themselves.
THAT is the kicker, right there!! A bunch of money, WASTED, that could be used for missile defense, medical research, energy research, or (heaven forbid )a tax cut, going to a think-tank, to give a 300 YEAR prediction. But I keep forgetting:: With Liberals,it is not the result that counts, it's the intentions.
LMAO...Nostra-dumbass
*snicker*
That is one big pile of environut crap!
And of course assuming that nothing on the entire planet changes in the next 300 years to make everything ALL better,...and the Islamofascists don't have us all driving donkey carts and goat sleds.
And isn't it true that the North Pole almost totally consists of frozen sea water...no land at all?
This was simply a modeling exercise.
Since the ocean levels were much higher during the Medieval warming than they are today -- and haven't measurably risen since 1850 -- I'd say this "model" is a little off.
Their grants should be cancelled and they should be fired and blackballed.
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