CO2-Temperature Correlation Weaker than Thought

Temperature-rise predictions have been, however, confirmed

By Tudor Vieru on January 28th, 2010 10:40 GMT
In a new scientific study, experts have determined that the action of the feedback mechanism connecting global temperature rise and carbon dioxide production from human activities has been exaggerated in previous studies. The report has found that, indeed, as the climate warms, oceans and forests become proportionately less able to soak up carbon, but say that the situation is not as dire as advocated by other groups. Still, the researchers behind the new paper emphasize, the estimated trend of temperature rise that earlier models hinted at was found to be entirely accurate, the BBC News reports.

The scientists behind this investigation are based in Germany and Switzerland, and their main goal for this research was to establish precisely how the planet's natural carbon cycle would influence (promote or inhibit) human-induced global warming. They also highlight the fact that the concerns set forth by other groups, which deal with the influence of human activities on the Earth's natural climate, are entirely founded, and should therefore be carefully considered and analyzed.

A number of scientists who argue against global warming say that, as the planet gets increasingly warmer, the Earth will naturally adopt a negative feedback loop. They believe that higher temperatures would promote more vegetation growth, which would, in turn, absorb higher amounts of CO2 from the air than the currently existing vegetation can. As a direct result, the future carbon dioxide rise would be tempered naturally. But their argument is disproved by experts saying that the negative feedback loops will be thrown out of balance by a positive feedback loop, in which new vegetation will be overwhelmed by additional carbon, released by oceans and existing forests, once they reach their maximum storage threshold.

“In a warmer climate, we should not expect pleasant surprises in the form of more efficient uptake of carbon by oceans and land […] that would limit the amplitude of future climate change,” Belgian scientist Hugues Goosse, who is based at the Universite Catholique de Louvain, says. Details of the new investigation have been published in the latest issue of the esteemed scientific journal Nature. “I think that the magnitude of the warming amplification given by the carbon cycle is a live issue that will not suddenly be sorted by another paper trying to fit to palaeo-data,” Imperial College London (ICL) climate expert, Professor Brian Hoskins, tells the British news agency.
Temperature-rise predictions have been again confirmed in a new study
   Temperature-rise predictions have been again confirmed in a new study
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