Det har pågått en intens debatt og krangel de siste dagene før IPCC-rapporten ble fremlagt. Denne gang var det Kina som krevde mildere formuleringer i det 21 sider lange resymèet. USA fikk denne gang ros for en konstruktiv rolle.

The conclusions, in the latest report from the United Nations’ Intergovernmental Panel on Climate Change, came after four days of sometimes rancorous editing by hundreds of scientists and government officials who have been meeting here since Monday. The panel has tracked research on human-caused global warming since it was created under United Nations auspices in 1988.

In a sign of shifting geopolitics on global warming, scientists who worked on the report singled out China among a group of nations that watered down some language in the 21-page summary, while they credited the United States, which for years had stressed the uncertainty in the science, with playing a mostly constructive role now.

China is poised to surpass the United States as the world’s largest emitter of carbon dioxide, the main heat-trapping greenhouse gas, and it has been under growing diplomatic pressure — along with the United States — to agree to binding limits on emissions.

Tre land var bremseklosser: Kina, Russland og Saudi-Arabia. Kina ville ikke bøye seg for at menneskeskapte endringer allerede virker inn på naturens system, noe som utløste voldsomme reaksjoner blant forskerne.

Stephen H. Schneider, a climatologist at Stanford University, said Russia and China were among countries that opposed inclusion of the mitigation scenarios supported so strongly by Europe.

He said the United States had asked that statements about ice sheets were removed but that the «Americans were helpful much more than they were harmful.»

Dr. Schneider, however, was strongly critical of the Chinese, who he said marshaled technical arguments that had upset other scientists, including Cynthia Rosenzweig of the NASA Goddard Institute for Space Studies, who made a formal written protest to Dr. Pachauri early on Friday, adding drama to the final hours of the week-long meeting.

The Chinese had been disputing how much confidence to ascribe to evidence that natural systems were responding to climate change, said Schneider.

The Chinese «wouldn’t relent and after the protest all the lead authors and most of the delegations broke into applause,» he said. «I’ve never seen anything like it — that’s how angry people were.»

Kina er idag avhengig av soyabønner som dyrkes i Brasil. Hvordan vil de brødfø befolkningen sin, hvis klimaendringene inntreffer for fullt?

Emissions Already Affecting Climate, Report Says

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