Tuesday, July 31, 2012

study of tree rings, corals and ice cores found abnormal peak temperature that is aligned with the human-induced climate change

The last 60 years have been the warmest for a millennium in Australia and can not be explained by natural causes, according to a new report from scientists who support the case of a reduction in carbon emissions rights.

In the first major study of its kind in the region, scientists from the University of Melbourne used data from 27 natural climate indicators, including tree rings The corals and ice cores to map the evolution of temperatures during the last 1000 years.

"Our study showed that recent warming in the context of 1000 years is very unusual and can not be explained by natural factors alone, suggesting a strong influence human rights caused by climate change in the Australasian region, "said principal investigator Dr. Joƫlle Gergis.

climate reconstruction was done in 3000 in different ways and concluded with an accuracy of 95% of any other period of the year 1000, after the party or exceeded -1950 warming in Australia.

"The models showed that, before 1850, there was no long-term trends and changes in temperature are probably caused by natural climate variability, which is a random process, "he said.

" However, the [model showed] the warming of the 20th century far exceeds the amplitude of natural climate variability and shows that the warming of recent experience in Australia not unprecedented in the context of the last millennium. "
maximum annual average daily temperatures in Australia rose by 0.75 ° C since 1910. Since the 1950s every decade has been warmer than the last.

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