Wake-up call for climate change doubters

Maybe climate change skeptics, most of whom seem to be of the conservative persuasion, would think twice if they knew that many of the biggest countries and industries in the world are taking climate change very seriously.

We're not just talking dotcoms like Google, which have invested heavily in sustainable enterprises, but great grey eminences including major insurance companies and banks. I guess being realistic about the risks from global warming and climate change, and being alert to the enormous growth potential in conservation, green energy and sustainable businesses makes sense when you're responsible for billions or trillions of dollars of investments.

One of those financial heavy hitters, Deutsche Bank,commissioned an independent study from a group of climate experts at Columbia University. The bank asked the experts to look at the scientific evidence for or against the major arguments raised by climate change skeptics in recent years. You've read or heard most of these arguments, for example in George Wills' influential columns in the Washington Post.

The Columbia Unversity team basically concluded that although it's true that Earth's climate is extremely complex and the scientific community's ability to predict exactly what will happen as we continue to pump greenhouse gases and aerosols into the atmosphere, cut down forests, etc., is necessarily imperfect, human-caused climate change is real and serious.

The implication is that any enterprise that wants to succeed in the real world needs to take climate change seriously.

You can read more about the Deutsche Bank study in a recent Suite101 article here.

Thinkin' about Climate Change Risks

I recently had the opportunity to interview George Backus, a nuclear engineer, systems researcher and economics expert who leads a team at Sandia National Laboratories, in Albuquerque, New Mexico, whose job it is to evaluate and detail the risks to the United States from climate change.

Bachus has a deep and unique understanding of complex systems, not just Earth's climate, but how climate changes could interact with our equally complex -- and probably much more fragile -- economic system.

I recently posted two stories about Backus and his team's work on Suite101: "Rethinking Climate Change Risks -- National Lab's Approach," and "National Lab Calculates State-by-State Climate Change Risks."

Climate change skeptics often argue that the uncertainties in even the most advanced climate models mean we should do nothing about climate change -- no investments, no new regulations, no new laws, no new treaties; just business as usual.

Bachus turns that argument upside down. The greater the uncertainty, he says, the greater the risk. If climate scientists could tell us that sea levels would rise by no more than six inches by 2050, every region could know if it was at risk and take appropriate steps. However, if the best models can do is tell us that a six-inch rise is slightly more likely than any other number, but that the actual change could be anything from one inch to three feet, planners have to take into account the unlikely, but potentially catastrophic impact of that three foot rise.

Like a scorpion, it's the tail end of the distribution of possible climate change outcomes -- the Katrinas and the ten-year droughts, plus their impacts on the economy, jobs and security -- that really stings.

For the details, please take a look at those two stories.

Robert Adler
for the institute

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