Here is a 3-D chart showing the dependence of atmospheric CO2 on season and hemisphere. I find the shape of this chart very surprising, and somewhat disturbing. Disturbing because of our revealed ignorance. The Earth is a complex system with feedback loops that we don't understand. If a certain combination of conditions, such as the complete melting of European glaciers (as an example), were to arise, it might trigger a cybernetically positive feedback loop, a runaway situation where the outcome can be characterized only by chaos theory and catastrophic cusps.
6/29/2005 3:58 PM