I like the above video, though I would make a few changes if I could draw. For example, I would more carefully choose dimensions in the scene that shows the earth surrounded by what is apparently supposed to be the atmosphere. The earth’s diameter is roughly 8,000 miles, but its atmosphere is only a few miles thick. It should be a narrow band around the globe, not something that doubles the apparent size of the globe as it does in the animation.
It is also worth pointing out that steroids demonstrate another worthwhile answer to those people who continue to claim that CO2 is just a trace gas whose concentration of a few hundred parts per million cannot possibly have as big of an effect as climate scientists have warned us it is having. Think about the size of a home run hitting baseball player – probably 100-120 kilograms – and the size of a pill – perhaps a few hundred milligrams. The steroid concentration in that body mass is probably on the order of a few parts per million, but it can have a rather noticeable effect.
CO2 concentration increases may not cause individual weather events any more than the use of steroids causes individual home runs, but the probability of extreme weather increases with the concentration of CO2 like the probability of home runs increase with use of steroids.
Hat tip to ABC News (July 15, 2012) It’s Simple: Global Warming Is Causing the Extreme Weather and to Barry Brook @BraveNewClimate for pointing to the article.