Le CO2 n'est pas LE responsable du changement climatique

mackie07 a écrit:Ce n'est pas parce qu'une majorité affirme (en hurlant) qu'elle a raison...

Le gouvernement japonais vient d'officialiser le "Green growth strategy". Un grand plan avec pour objectif d'atteindre la neutralité carbone dans l'industrie au Japon d'ici 2050. Les automobiles n'y échapperont pas, avec la mort du thermique à partir de la moitié de la prochaine décennie.

Un physicien du CEA démontre que l'équation de l'effet de serre radiatif est fausse

Lost heat: why has the warming slowed?
Jeff Tollefson
It is one of the biggest mysteries in climate science: humans are pumping more greenhouse gases into the atmosphere today than ever before, yet global temperatures have not risen much in more than a decade. That trend does not undermine the idea that greenhouse gases will eventually push global temperatures into uncharted territory, but it does have scientists puzzled.

One partial explanation is natural variation: temperatures are expected to plateau occasionally even during a warming climate. And the world remains a very warm place. The ten hottest years on record have all occurred since 1998.

Yet with the stalled warming now approaching its 15th year, researchers are seeking some deeper explanation. “The heat must be going somewhere,” says Ed Hawkins, a climate scientist at the University of Reading, UK. “The question is where.”

One likely culprit is the oceans, which already absorb most of the heat. The latest research suggests that more heat than expected could be going into the deep oceans, below 700 metres7. Another possibility that scientists have investigated is whether volcanic ash from minor eruptions and pollution from the industrialization of China and other countries are reflecting more of the Sun's energy back into space8. Still another is the prolonged lull in solar activity early in the millennium, which might decrease the amount of energy hitting Earth.

But scientists cannot yet fully explain the recent trends, and the larger question is whether the lack of warming today portends less warming in the future.

Michael Ring and his colleagues at the University of Illinois at Urbana-Champaign argue that Earth might in fact be less sensitive to greenhouse gases than previously believed9. Whereas the Intergovernmental Panel on Climate Change estimates that doubling atmospheric carbon dioxide levels would ultimately increase global temperatures by 2–4.5 °C, with a best estimate of 3 °C, the Illinois group says that the rise is more likely to be between 1.5 °C and 2 °C.

Other researchers argue the opposite10, and the issue remains unsettled. Besides, the continuing climb in global emissions means that a lower climate sensitivity would cause only a slight delay in global warming, says Alexander Otto, a climate policy researcher at the University of Oxford, UK. “The impacts we were expecting in 2050 would happen a decade later,” he says. “There is certainly no reason for complacency.”

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a-spec a écrit:C'est vrai que je trouve qu'il fait quand même super froid en ce moment