http://nigguraths.wordpress.com/2011/07/14/the-pattern-in-the-climate-vultures-methods/

I thought A Bogusky was a such a great name!

Perhaps even more significant, cold ocean waters absorb lightweight C12 preferentially, resulting in lots of C13-deficient carbon in the oceans. This low-C13 carbon most certainly would have been released massively into the atmosphere over the course of the world’s warming trend since 1850, when the Little Ice Age ended.

http://chiefio.wordpress.com/2009/02/25/the-trouble-with-c12-c13-ratios/

Interestingly while I had been thinking that maybe Galen had been sloppy (after your initial comments) on reflection I think maybe she had it right. The increase in CO2 is directly caused by the release of carbon so to talk about carbon accumulating in the atmosphere is correct.

This article on RealClimate gives some background

http://www.realclimate.org/index.php/archives/2004/12/how-do-we-know-that-recent-cosub2sub-increases-are-due-to-human-activities-updated/

I have read a few times that this issue is not quite as “settled” as we might believe (sorry no references at this stage) However, I think it is still possible to fully accept that recent CO2 increases are all due to human fossil fuel burning, and still come to the conclusion that any effects will be small and benign, rather than dangerous or catastrophic.

Your question misses the point. The compound considered to cause global warming is carbon dioxide, or CO2. My point is that you could refer to it as oxygen with equal logic. After all, in CO2 there’s more oxygen than carbon — in fact, twice as much! But carbon is black, we’re familiar with soot and smoke as dirty stuff so it’s an easier sell.

Do I believe the fossil fuel thing? It seems believable, although there are large margins of error. Also, there is no evidence that CO2 is responsible for all the recorded warming. That, to me, is the important fact.

Someone should have told her that the scale of the sink in the Southern Oceans and the venting in the Tropical Pacific swamp all other atmospheric/oceanic exchanges of CO2 and that CO2 mixes rapidly in the atmosphere

Just to be clear do you believe that the increased global CO2 levels are due to burning fossil fuels? I had thought that the anthropogenic isotopic signature of carbon proved it but if you have an alternative theory I would be interested to hear it, or at least have a look at the peer reviewed source.

Dr Johnson has written quite extensively on his theories of the greenhouse effect that are at odds with the “consensus”.

For example, here:
http://bishophill.squarespace.com/blog/2010/4/18/claes-johnson-on-agw-postulates.html

What I find quite insidious is that Johnson was banned from teaching courses in finite element modelling at his university, because of his scientific views. I cannot condone this kind of behaviour at all. It smacks of something out of 1930′s Germany.