This was an informative presentation. But the last slide featuring F. Sherwood Rowland negates the science presented in the previous slides. What if I told Dr. Rowland that I know that the sun will rise tommorow and I choose to do nothing about it. Doing nothing is an option when you cannot predict accurately what impact doing x,y, or z will have. Just as we strive to separate church & state, we must also separate science & politics.
I don't see the Keeling curve here, the one that shows how much CO2 is added to the atmosphere each year. I believe it's about 2ppm per year and we soon will approach 400ppm. Carbon dioxide traps heat (infrared radiation) and that has been know for over a century. Yes, there are many variables in an scientific issue, but in the face of this CO2 trend we should be doing everything we can to reduce the build-up. If we do nothing, we likely will present the future with some very unpleasant scenarios. This is not only a scientific and political issue, but a moral one too.
I think is radiation or global warming that's causing the temperatures to go below or above averavge.
There were probably 100s of slides from the workshop (including the Keeling Curve). I tried to include a few to show what the scientists presented. The Rowland quote (he just passed away and shared the Noble for his work on chlorofluorocarbons and ozone depletion) was included in that his discoveries and predictions led to the Montreal Protocol and reduction in the production of CFCs.