Water World: Slipping Toward Climate Catastrophe

By George Monbiot, Monbiot.com. Posted July 12, 2007.

Editor's Note: George Monbiot is a British journalist and author whose expertise is on climate change and other environmental issues. Monbiot's article reveals that government ineptitude in the face of increasingly frightening scientific data on climate change is not limited to the United States: The UK government is dangerously negligent on energy and climate issues even though it knows better.

Reading a scientific paper on the train this weekend, I found, to my amazement, that my hands were shaking. This has never happened to me before, but nor have I ever read anything like it. Published by a team led by James Hansen at NASA, it suggests that the grim reports issued by the Intergovernmental Panel on Climate Change could be absurdly optimistic.

The IPCC predicts that sea levels could rise by as much as 59 centimeters this century. Hansen's paper argues that the slow melting of ice sheets the panel expects doesn't fit the data. The geological record suggests that ice at the poles does not melt in a gradual and linear fashion, but flips suddenly from one state to another. When temperatures increased to 2-3 degrees Celsius above today's level 3.5 million years ago, sea levels rose not by 59 cm but by 25 meters. The ice responded immediately to changes in temperature.

We now have a pretty good idea of why ice sheets collapse. The buttresses that prevent them from sliding into the sea break up; meltwater trickles down to their base, causing them suddenly to slip; and pools of water form on the surface, making the ice darker so that it absorbs more heat. These processes are already taking place in Greenland and West Antarctica.

Rather than taking thousands of years to melt, as the IPCC predicts, Hansen and his team find it "implausible" that the expected warming before 2100 "would permit a West Antarctic ice sheet of present size to survive even for a century." As well as drowning most of the world's centers of population, a sudden disintegration could lead to much higher rises in global temperature, because less ice means less heat reflected back into space. The new paper suggests that the temperature could therefore be twice as sensitive to rising greenhouse gases than the IPCC assumes. "Civilization developed," Hansen writes, "during a period of unusual climate stability, the Holocene, now almost 12,000 years in duration. That period is about to end."

I looked up from the paper, almost expecting to see crowds stampeding through the streets. I saw people chatting outside a riverside pub. The other passengers on the train snoozed over their newspapers or played on their mobile phones. Unaware of the causes of our good fortune, blissfully detached from their likely termination, we drift into catastrophe.

Or we are led there. A good source tells me that the British government is well aware that its target for cutting carbon emissions -- 60 percent by 2050 -- is too little, too late, but that it will go no further for one reason: it fears losing the support of the Confederation of British Industry (CBI). Why this body is allowed to keep holding a gun to our heads has never been explained, but Prime Minister Gordon Brown has just appointed Digby Jones, the former director-general of the CBI, as a minister in the UK government department responsible for energy policy. I don't remember voting for him. There could be no clearer signal that the public interest is being drowned by corporate power.

The government's energy program, partly as a result, is characterised by a complete absence of vision. You can see this most clearly when you examine its plans for renewables. The EU has set a target for 20 percent of all energy in the member states to come from renewable sources by 2020. This in itself is pathetic. But the British government refuses to adopt it: instead it proposes that 20 percent of the UK's electricity (just part of Britain's total energy use) should come from renewable power by that date. Even this is not a target, just an "aspiration," and it is on course to miss it. Worse still, the British government has no idea what happens after that. I recently asked whether it has commissioned any research to discover how much more electricity we could generate from renewable sources. It has not.

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George Monbiot is the author of 'Poisoned Arrows' and 'No Man's Land' (Green Books). Read more of his writings at Monbiot.com. This article originally appeared in the Guardian.

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