I was asked to source my statements, as I did not do so before.<p>The IPCC Third Report concludes that climate change might either be caused of a changing mean temperature, a changing variance, or both. What the real cause for climate change is, needs to be carefully assessed. This supports my statement that climate change is not necessarily caused by increasing mean temperatures.<p><a href="http://www.grida.no/publications/other/ipcc%5Ftar/?src=/climate/ipcc_tar/wg1/088.htm" rel="nofollow">http://www.grida.no/publications/other/ipcc%5Ftar/?src=/clim...</a>