SCIENTIST SAYS...

 6 oct 2009

The planet has warmed and cooled several times over the past 150 years, all within the range of natural climate variability. There are no published scientific papers that show irrefutable proof that any of this is human-caused. Proof is not to be mistaken for the output of hypothetical climate models, none of which has been shown to reliably predict climate. Proof is not merely evidence of warming coupled with the default conclusion “it must human-caused” when we don't how else to explain it. This is nothing more than admission of ignorance. Even the UN’s Intergovernmental Panel on Climate Change (IPCC) acknowledges changes we have seen may be natural. The following statement appears in a major IPCC report “Climate Change 2001”.

“The fact that the global mean temperature has increased since the late 19^th century and that other trends have been observed does not necessarily mean that an anthropogenic effect on the climate has been identified. Climate has always varied on all time-scales, so the observed change may be natural.”

 

The notion of an unchanging climate has been used to deceive us. It is a conveniently forgotten fact that most of the industrialised world went into hysterics during the forty years of global cooling beginning in the late 1930s. It has been replaced by global warming hysteria over a temperature rise over 100 years of less than one degree, a trend that started before modern industrialisation caused atmospheric carbon dioxide concentrations to rise. 

Chris de Freitas is climate scientist and associate professor at the University of Auckland New Zealand.



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