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Analysis: Science is no longer on the side of the
 Mike Johnston
 Feb 04, 2007 11:52 PST 
By Charles CloverLast Updated: 12:34am GMT 04/02/2007
This was not a wake-up call. This was "We told you so."
Seventeen years and a zillion computer hours after the world's climate
scientists first ran the big calculation, they came up with the same
estimate of the warming the planet will see by the end of the century
if we go on pouring out greenhouse gases: 3C.
If a single numeral can be accusatory, this one was.
If there are any of our political leaders still snoozing at the back of
this science lesson, they stand duly rebuked for not paying attention.
In the past 17 years that mankind has squabbled and allowed its
greenhouse gas emissions to go on rising, the blanket of gases that
keeps the Earth warmer than space has increased by seven per cent. But
when you calculate the radiative forcing potential of that seven per
cent — its capacity to force the climate to warm — the increase since
the IPCC's first report in 1990 is 30 per cent.
Rajendra Pachauri, the IPCC chairman, said that gives an idea of the
urgency of doing something now, before climate change gets beyond our
control — and a sense that many opportunities have already been
The predicament we face if emissions go on rising along the "high"
scenario envisaged by IPCC was put colourfully by one of its authors,
Kevin Trenberth, of the National Centre for Atmospheric Research in
Boulder, Colorado.
"If you come back in 100 years, it will be like Star Trek. You could be
on a different planet," he said. "You can move from Miami to New York,
but polar bears and trees don't have anywhere to go to."

Posted By Mike Johnston to H2OPower at 2/04/2007 02:37:00 PM
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