Tuesday, May 15, 2012

Common questions about climate change answered

Many of us have asked questions about the science behind the causes and impacts of anthropogenic climate change. I just came across an informative source of information on the ABC website. The page is called "ask an expert > Climate change" and has many of the frequently asked questions answered by scientist working in the relevant fields at CSIRO and other recognised experts from here in Australia.

Kevin Hennessy (Climate Impact Group, CSIRO Atmospheric Research) provided an answer to one of the most common questions: how do we know the climate change we are experiencing is man-made rather than natural. Kevin's response is:

"Climate models driven by scenarios of greenhouse gas ans aerosol (small particle) emissions estimate a rise in temperature of 1.4 to 5.8 degrees by 2100 assuming no actions to reduce climate change. While this is comparable to previously occurring climate change, it is occurring at an unprecedented pace and the changes would affect a larger and less mobile population." (emphasis added). 

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