From Down Under:

I DEVOTED six years to carbon accounting, building models for the Australian Greenhouse Office. I am the rocket scientist who wrote the carbon accounting model (FullCAM) that measures Australia’s compliance with the Kyoto Protocol, in the land use change and forestry sector.

…

When I started that job in 1999 the evidence that carbon emissions caused global warming seemed pretty good: CO2 is a greenhouse gas, the old ice core data, no other suspects.

The evidence was not conclusive, but why wait until we were certain when it appeared we needed to act quickly? Soon government and the scientific community were working together and lots of science research jobs were created. We scientists had political support, the ear of government, big budgets, and we felt fairly important and useful (well, I did anyway). It was great. We were working to save the planet.

But since 1999 new evidence has seriously weakened the case that carbon emissions are the main cause of global warming, and by 2007 the evidence was pretty conclusive that carbon played only a minor role and was not the main cause of the recent global warming. As Lord Keynes famously said, “When the facts change, I change my mind. What do you do, sir?”

I recently was fortunate enough to see a presentation by Dr. John Christy of UAH about the subject of man made climate change.  The venue in which I saw Dr. Christy was mostly very technical, full of scientists and engineers.  It was a good audience for him because we could understand the numbers he presented and no one blinked when he talked about a nonlinear dynamic model.  I found one of Christy’s presentations on YouTube.  Yes, it’s long, but it is worth the time investment.  The sound is a bit low, so turn up your speakers.

http://www.youtube.com/watch?v=-WWpH0lmcxA

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This entry was posted by Brian on Thursday, July 24th, 2008 at 8:46 pm and is filed under Environment. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site. Please note the copyright policy.