Freeman Dyson dumps on climate models

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Have a look at the following videos:

http://www.youtube.com/watch?v=k69HUuyI ... re=related

followed by:

http://www.youtube.com/watch?v=JTSxubKfTBU

Dyson, an old man now was one of the foremost physicists of the 20th century.

ruveyn

My hero. ^^

Note that he's not saying "nothing to see here, move along" but "you're looking at it wrong."

Wait, did he imply CO2 cause O3 depletion?

He clearly stated that ozone depletion was a more serious (or potentially more serious) problem than warming.

if a big Ozone Hole opened up in the Northern hemisphere were there is a much higher population density there would be a marked increase in ultra-violet radiation damage. That means more cancer, for starters.

Fortunately the Ozone Hole is over Antarctica where almost no one lives.

ruveyn

I would think that the destruction of the Ozone Layer would be more serious. However, I thought that the CFCs had been largely phased out and alternative chemicals used in their place for their various applications. Also a lot of countries have agreed to phase them out completely. Although the Ozone Hole is still there, I thought it was recovering. I also haven't heard anything recently about ozone depletion in a while.

Now after watching the video again, what he said is:
CO2 increase → stratosphere cooling → more ice → destroy more O3

Well that's correct in theory, but as Jono said, after the banning of CFC, ozone level has been relatively stable. I don't think there's much recovering but it's definitely not going down with the increase of CO2. In the meantime, the stratosphere has really been cooled slightly. So that relation doesn't seem to be strong.

I actually agreed with most of the things he said though. It's just that there has been so much talk about CO2 recently this aspect somehow stand out.