Will a mere $250 million suffice to undo CO2's climate effect? A Microsoft funded science group thinks so, and at least one Nobel Prize winner agrees...
http://www.timesonline.co.uk/tol/new...cle6879251.ece
Go geo-engineering! If CO2 is a problem, then remove it from the atmosphere and store it underground, back to where it came before it was burned as fossilised fuel. If warming is a problem, than cool the planet. Far more efficient than bankrupting the economy because alarmists fear the wrath of nature for man's sins.
[spoil] As much as Caldeira disliked the concept, his model backed up Wood’s claims that geoengineering could stabilise the climate even in the face of a large spike in atmospheric carbon dioxide — and he wrote a paper saying so. Caldeira, the most reluctant geoengineer imaginable, became a convert — willing, at least, to explore the idea.
Which is how it comes to pass that Caldeira, Wood and Myhrvold are huddled together in the former Harley-Davidson repair shop showing off their scheme to stop global warming.
IT wasn’t just the cooling potential of stratospheric sulphur dioxide that surprised Caldeira. It was how little was needed to do the job: about 34 gallons per minute, not much more than the amount of water that comes out of a heavy-duty garden hose.
Warming is largely a polar phenomenon, which means that high latitude areas are four times more sensitive to climate change than the equator. By IV’s estimations, 100,000 tons of sulphur dioxide per year would effectively reverse warming in the high Arctic and reduce it in much of the northern hemisphere.
[...]
IV estimates this plan could be up and running in about three years, with a start-up cost of $150m and annual operating costs of $100m. It could effectively reverse global warming at a total cost of $250m.
Nicholas Stern, the economist who prepared an encyclopedic report on global warming for the British government, suggested we spend 1.5% of global GDP each year — that would be a $1.2 trillion bill today — to attack the problem.
By comparison, IV’s idea is practically free. It would cost $50m less to stop global warming than Gore’s foundation is paying just to increase public awareness about global warming.
Would it work? The scientific evidence says yes. Perhaps the stoutest scientific argument in favour of it came from Paul Crutzen, a Dutch atmospheric scientist whose environmentalist bona fides run even deeper than Caldeira’s — he won a Nobel prize for his research on atmospheric ozone depletion.
In 2006 he wrote an essay in the journal Climatic Change lamenting the “grossly unsuccessful” efforts to emit fewer greenhouse gases and acknowledging that an injection of sulphur in the stratosphere “is the only option available to rapidly reduce temperature rises and counteract other climatic effects”.
Crutzen’s embrace of geoengineering was considered such a heresy within the climate science community that some of his peers tried to stop the publication of his essay. How could the man reverently known as “Dr Ozone” possibly endorse such a scheme? Wouldn’t the environmental damage outweigh the benefits?
Actually, no. Crutzen concluded that damage to the ozone would be minimal. The sulphur dioxide would eventually settle out in the polar regions but in such relatively small amounts that significant harm was unlikely.
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