I have plenty of optimism, ARNOTT. it comes form the almost certain knowledge that I, you, the GFS, the METO - not even James Madden - do not know what things will be like in, say, a month from now...
It seems as if physics and chemistry are not science: http://forum.netweather.tv/topic/76448-scepticism-of-man-made-climate-change/page-42#entry2847032 Perhaps they've become a subset of economics - the holy grail of all those wearing Panglossian spectacles?
I've discovered why Bjorn Lomborg's The Skeptical Environmentalist was so bereft of scientific understanding - he's an economist. And they can't even predict the economy!
A very apt quote from biologist, David Suzuki: "We're in a giant car heading toward a brick wall and everyone's arguing over where they're going to sit."
What do volcanoes have to do with man-made CO2? I can see how volcanoes impact on natural carbon dioxide, Snowy, and I have no problem with that at all...Can you demonstrate that - in the time since the Industrial Revolution - volcanism has increased sufficiently to account for the near doubling of atmospheric CO2?