If you believe some scientists, then it would seem that the world as we know it will shortly be devastated by the effects of global warming. However, with the summer that has just been suffered in Edmonton, one might argue that global warming should hurry up already so that there might be some sun and heat. (Anyone about to suffer an Edmonton winter would undoubtedly concur.)
To reconcile the doomsayers' predictions of impending calamity with the seemingly colder reality, I have a theory. Having an infinitesimal knowledge of the subject, I anticipate that a gentle reader with a vaster wisdom might be able to correct my misguided and unscientific hypothesis. Until then, my postulations:
1) If the trend of increasing global temperatures do occur, resulting in melting ice caps, then there would be more water, higher water levels, and in general a greater surface area that is filled with water.
2) My grade 4 science classes taught me that water evaporates; I later learned that higher temperatures or higher surface areas would increase the rate of evaporation, therefore, if 1) is correct, there should be higher rates of evaporation.
3) Water in its different forms is part of a greater water cycle: evaporation-condensation-precipitation. If 2) is true, then there would be more water going through the cycle. If so, this would explain the increase in precipitation in Edmonton this summer.
4) If 3) is true and there is an increase in precipitation, this precipitation is likely to cool down the global temperatures, temporarily suspending the trend of global warming.
5) Or not.