Climate Report to Warn Time Running Out in Greenhouse Gas Battle

Climate Report to Warn Time Running Out in Greenhouse Gas Battle

Time is running out to cut the greenhouse-gas emissions that drive climate change, but much can be done at a modest cost to attack the looming crisis, according to experts gathering for new talks.Fierce debate is expected however at the Intergovernmental Panel on Climate Change (IPCC) meeting which starts in Bangkok on Monday to hammer out a new all important summary for governments.

A draft of the report to be agreed by experts on the United Nation's main authority on climate change says there is scant time to waste.

"Mitigation efforts over the next two to three decades will determine to a large extent the long-term global mean temperature increase and the corresponding climate change impacts that can be avoided," says the draft which has been seen by AFP.

Using a smart mix of policies and technologies, the cost of stabilizing carbon pollution at nearly 75 percent above today's levels would be just 0.2 percent of world gross domestic product (GDP) by 2030.

That price would rise to 0.6 percent of global GDP if the world stabilized carbon dioxide (CO2) emissions at a level roughly 50 percent higher than today, they calculate.

The sticking points expected at the debate include emissions caps, taxes on CO2 emissions and references to the Kyoto Protocol -- an approach that is anathema to President George W. Bush.

There could also be squabbles over nuclear energy as an alternative to fossil fuels and over carbon storage, a nascent technology for storing greenhouse gases deep underground.

The report to be released on Friday is the last in a massive three-volume update of knowledge on climate change, based on the work of some 2,500 scientists.

But those close to the meeting fear the final document could be watered down by political pressure.

"The economists are too sharply divided," said one expert from an international agency, predicting the European Union (EU) would lock horns with the United States and China over a range of issues.

The EU has set a goal of reducing its CO2 output by 20 percent by 2020 compared to 1990 levels, while the United States and China, the world's biggest carbon polluters, fear the cost to their economies of such ambitious goals.

The IPCC report identifies policies, technologies and measures that would slow or eventually stop global warming.

Among the options are more efficient use of fossil fuels in construction, industry and transport; economic or fiscal mechanisms to spur renewable energies such as wind, solar and geothermal; and incentives for forestry and farming, which together account for more than 30 percent of total greenhouse gases.

Large reductions in CO2 emissions could also be achieved through creating tougher standards for buildings, motor vehicles and all electricity-consuming appliances, the report says.

Essential for all measures, however, is setting a "carbon price," in other words, handing on pollution costs to producers and consumers. That would be a powerful carrot for energy efficiency and low-carbon technology.

To give an example, carbon prices of 20-50 dollars per tonne of CO2 equivalent, if sustained or increased over decades, could "decarbonize" the energy industry, says the report.

The higher the price, the greater the potential for reducing emissions, it adds. If CO2 is priced at 20 dollars per tonne, emissions of between nine and 18 billion tonnes per year could be removed; at 100 dollars per tonne, the carbon cleanup jumps to 16-30 billion tonnes.

But what is best for the environment can conflict with a healthy economy, for oil, gas and coal are likely to remain the mainspring of the world's energy supply for several decades, according to the International Energy Agency (IEA).

Economists argue that too high and fast a rise in the carbon price would send fossil-fuel dependent economies into a tailspin.

The first volume of the IPCC report, issued in February, predicted that average world temperatures would rise by between 1.8 to 4.0 C (3.2 to 7.2 F) within a wider range of 1.1-6.4 C (2.0-11.5 F).

The second, released on April 6, warned of severe consequences, including drought, flooding, violent storms, as well as increased hunger and disease.

Copyright © 2007 Agence France Presse

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