Study links (Australian) drought with rising emissions

Study links drought with rising emissions

Melissa Fyfe
August 16, 2009

DROUGHT experts have for the first time proven a link between rising levels of greenhouse gases and a decline in rainfall.

A three-year collaboration between the Bureau of Meteorology and CSIRO has confirmed that the drought is not just a natural dry stretch but a shift related to climate change.

Scientists working on the $7 million South Eastern Australian Climate Initiative said the rain had dropped away because the subtropical ridge - a band of high pressure systems that sits over the country's south - had strengthened over the past 13 years.

Last year, using sophisticated computer climate models in the United States, the scientists ran simulations with only the ''natural'' influences on temperature, such as differing levels of solar activity.

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