Well, I have zero desire to score political points off the tragedy in Oklahoma, but unfortunately others are more than eager to do so. As a result, it is necessary to put a few facts on the table to refute the absurd claim that this tornado is somehow attributable to CO2.
- I really should not have to say this, but there is no mechanism by which CO2 has ever been accused of causing tornadoes except via the intervening step of warming. Without warming, CO2 can't be the cause (even with warming, the evidence is weak, since tornadoes are cause more by temperature differentials, than by temperature per se). So it is worth noting that there have been no unusually warm temperatures in the area of late, and in fact the US has had one of its coolest springs in several decades.
- I should also not have to say this, but major tornadoes occurred in Oklahoma at much lower CO2 levels.
- In fact, if anything the trend in major tornadoes in the US over the last several decades is down
- And, this is actually a really, really low tornado year so far. So its hard to figure an argument that says that global warming reduced tornadoes in general but caused this one in particular