Even as the climate change talks begin today in Copenhagen and as EPA Administrator Lisa Jackson announces the U.S. will begin regulating greenhouses gases regardless of what the House and Senate do, some are warning: what we are considering doing, won’t be enough.

Consider that economic infrastructure now being installed around the globe is locking in future increases in fossil fuel consumption. Take China, for example.

In 2008, less than nine million cars were sold in China. In 2009, car sales will rise to between 12 and 13 million. By 2015, car sales are expected to reach 16 million – an increase of 44% over 2008 levels. The cumulative increase in cars on the road in China cannot do other than increase future demand for oil, as gasoline and diesel.

At the beginning of 2006, China had an estimated 350 gigawatts of coal-fired capacity in operation. An additional 600 gigawatts of coal-fired capacity (net of retirements) is projected to be brought on line in China by 2030 – an increase of 42% over 2006 levels.

Not to pick on China. The U.S. is responsible for 29% of carbon dioxide emissions over past 150 years, triple China’s share. But assigning blame for greenhouse gas emissions is irrelevant to crafting a solution to the climate change crisis.

Even while a new study published in Nature Geoscience (abstract here) reports that over the long term Earth’s temperature may be 30-50% more sensitive to atmospheric carbon dioxide than has previously been estimated, the decade of the 2000s will go down as the warmest on record – and climatologists warn warmer weather is on the way.

In a speech to delegates at Copenhagen, IPCC head Rajendra Pachauri went down the list of impacts from global warming, some of which we are already beginning to see:

• More heat waves and heavy rainfall events
• Increase in tropical cyclone intensity
• Disappearance of Arctic sea ice
• Decrease in water resources in semi-arid areas, such as the Mediterranean Basin, western United States, southern Africa and north-eastern Brazil
• Elimination of the Greenland ice sheet and a resulting contribution to sea level rise of about 7 meters
• Species threatened with extinction
• Greater stress on water resources from population growth and economic and land use change, including urbanization
• Significant future increase in heavy rainfall in many regions, with greater flood risk, while other regions dry up
• More than two billion people will live in areas threatened by flood
• Increasing threat to low-lying island nations and coastal cities and deltas from rising seas Seas are already rising because of melting glaciers and icesheets as well as expansion of the oceans as they warm

The good news may be that the scenarios spun out by the IPCC are fantasies when it comes to potential future fossil fuel consumption. The fossil fuels – oil, gas, and coal – simply will not be physically available to generate the greenhouse gas emissions projected in the several IPCC scenarios. Even the IEA, in its recently released World Energy Outlook 2009, is admitting its projections of future energy availability are nothing more than “faith based”, conceding the majority of oil production in 2030 will be coming from “fields yet to be developed or found” and that “output at existing fields . . . will drop by almost two-thirds by 2030.”

The bad news is, the science keeps getting increasingly gloomy. Every new study seems to report that Earth’s climate is more sensitive than previously believed and that “tipping points” are fast approaching, if not already exceeded.

And the good news is pretty dismal, for business-as-usual. If peak production of fossil fuels is near enough to ensure that climate catastrophe will not occur no matter what emissions policies we adopt, that in turn means that our energy policies are hopeless when it comes to transitioning to a social and economic system based on renewable energy resources that in any way resembles the industrial society we have come to think of as normal and desirable.

We cannot avoid the reality that any possible solution to our energy and climate predicament requires that we invent an entirely new economic model, one that doesn’t strive for or depend on economic growth but instead is based on the ecological principle that we must learn to find happiness within limits imposed by the natural systems within which we all live.

Unfortunately, economic growth remains the official ideology at Copenhagen. How to continue on that path is the agenda.