IPCC: action is (still) possible

Third volume of the World Climate Report adopted in Bangkok

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In order to keep climate change within manageable limits, CO2 emissions must be halved worldwide by 2050. This is the conclusion of the third report of the International Council of Science on Climate Change (IPCC), which was adopted today in Bangkok.

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Interaction of all technologies and strategies needed

The third and final part of the fourth World Climate Report focuses on the measures that can be taken to curtail global warming. The report distinguishes between measures that can be taken by 2030 and measures taken after that. For the near future, researchers conclude that not a single technology or strategy can stop climate change, but all sectors must contribute to the climate change goal.

The IPCC sees the expansion of renewable energies and the increase of energy efficiency as key factors. Explicitly named here are the capture and storage of CO2 for fossil fuel plants, the expansion of solar power, wave and water power, but also the controversial nuclear power. In the transport sector, alternative fuels, hybrid vehicles and more effective aircraft engines are expected to help reduce emissions.

Three percent of gross domestic product

Although the reduction of CO2 emissions remains the first climate protection goal, the calculations show that a so-called "multi-gas strategy" is the most promising. This also includes measures that reduce the emission of other greenhouse gases. According to the IPCC, the cost of such concerted measures in 2030 would be in line with a reduction in global gross domestic product of no more than three percent. The average annual growth rates would thus decrease by 0.12 percent. However, the costs can vary greatly from country to country. display

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Incentives needed

The delegates emphasize that emission reductions can be achieved by using existing technologies or those developed in the next few years - but only if such incentives are also provided by the political side. Investments in developing countries, such as the introduction of more energy-efficient technologies, are also required here.

Gabriel: "No reason for resignation"

Federal Environment Minister Sigmar Gabriel said on the occasion of the IPCC report: "The report shows that the climate catastrophe is not inevitable. We can prevent it. The European Union's goal of preventing a warming of more than two degrees from pre-industrial levels is achievable. But the IPCC report also shows that we have no time to lose. We must now act decisively to avoid serious and uncontrollable climate impacts. "However, according to the minister, the statements in the new IPCC report are no reason to resign from the challenge of climate change.

The IPCC report makes no recommendations, but rather presents the scientific state of the art and economic options and potentials for emission reduction and the effectiveness of measures. On February 2 of this year, the first sub-volume of the IPCC progress report was published. Therein the scientific bases are represented. The second sub-chapter presented on 4 April deals with the consequences of climate change. A concluding synthesis report, summarizing the key messages of the three sub-panels on political issues, will be adopted in November in Valencia (Spain).

(IPCC, BMU, 04.05.2007 - NPO)