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The Great Global Warming Swindle


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From today's Aussie.... the absence of any mention of the dreaded human induced Climate Change is quite curious. It is conspicous by its absence I think. Life was so much easier when all strange weather could be blamed on GW or CC - a bit like Inteliigent Design really - fill in the gaps of your understanding with a faith based belief system until science comes along and provides a real answer.

 

CSIRO climate scientists have confirmed that an obscure weather event in the Indian Ocean is the key cause of major droughts and bushfires in southeast Australia.

 

Worse, Melbourne-based Wenju Cai and Tim Cowan warn that the frequency of the so-called Indian Ocean dipole event is on the rise, heralding more devastating conditions to come.

 

According to the researchers, Victoria's 1983 Ash Wednesday bushfires and February's Black Saturday fires were preceded by extremely dry conditions, triggered by IOD events.

 

The recent Black Saturday fires followed three consecutive IOD events, said Dr Cai, speaking yesterday from the Greenhouse 2009 conference in Perth. “This was unprecedented.â€

 

During an IOD event, sea-surface temperature in the eastern Indian Ocean cools and wind direction shifts, ultimately reducing the formation of cloudbands that bring rain to southeast Australia.

 

“There are less clouds and less rain events in spring,†said Dr Cai.

 

He told The Australian that new data from the Argo ocean sensor network and historical records confirmed the IOD's impact.

 

“Between 1900 and 1930 we have four IOD events. In the last 30 years we have 12 and in the last 10 years we have 6 or 7 events,†he said.

 

According to Dr Cai, the IOD events are correlated directly with a significant drop in soil moisture and a 40 per cent reduction in spring rainfall in southeast Australia since 1950.

 

The new findings provide hard evidence for the IOD-drought and fire link, proposed earlier this year by UNSW researchers led by Caroline Ummenhofer.

 

Until now, the role of the IOD was poorly understood. In fact, it was first identified only a decade ago.

 

Previously, most experts believed that the pacific weather phenomenon known as the El Nino-Southern Oscillation was the most powerful driver of east coast weather.

 

But Dr Cai and Dr Cowan are convinced that the DOI is a “bigger scale†phenomenon which can overpower ENSO. As well, they will report in GRL that climate change is an even broader scale phenomenon that is increasing the frequency of IOD events.

 

They will publish their results in an upcoming series of papers in the American Geophysical Union's Geophysical Research Letters.

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But Dr Cai and Dr Cowan are convinced that the DOI is a “bigger scale†phenomenon which can overpower ENSO. As well, they will report in GRL that climate change is an even broader scale phenomenon that is increasing the frequency of IOD events.

 

 

Conspicous by it's absence?

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