The recent wave of severe storms, tornadoes and flooding plaguing the southern plains, essentially Texas, Oklahoma, Louisiana and Arkansas have cost a over 30 lives, countless injuries and billions in property damage. And it isn’t over yet. Some of the rain and flooding from these storms are breaking all records. One Texas official described the recent rain as “of biblical proportions”
One of the effects of global warming is more severe storms of all kinds – tornadoes, floods, heat waves, hurricanes, etc. Over the following decades we will see these increase in both frequency and severity. As we continue to pump ever increasing amounts of Carbon Dioxide into the atmosphere, more heat will be trapped, and more heat in the atmosphere is a principle cause of severe weather.
There are a couple of factors involved. A warmer atmosphere means warmer seas, which means more evaporation. Additionally the amount of water vapor that the atmosphere will hold is a function of temperature, the warmer it is, the greater the greater the amount of moisture in the atmosphere. Conditions such as wild fires will also increase, due to “dry thunderstorms.” Lightning and high winds accompany these events where the rain evaporates before it gets to the ground.
And it’s not just the current storms in the southern plains nor the blizzards on the east coast last winter, it is global. Although the Atlantic was rather calm during the traditional hurricane season last year, there was an unprecedented number of severe storms in the eastern Pacific and Indian Ocean nations. Again billions upon billions of dollars of damages and hundreds of lives lost.
An important point to make is that all this accelerated activity correlates with a warmer atmosphere. Can any one storm (or it’s intensity) be blamed on global warming? No, of course not. No more than any one home run by Mark McGwire could be attributed to steroid use.
The type of societal damage from severe storms varies. Flooding causes the most economic injury. Damage to infrastructure, homes and vehicles dominate the costs. Most human deaths in the US are caused by heat waves. Tornadoes cause the most human injuries.
So what can be done? In the long term the solution is obvious – quit burning stuff for energy production. Burning coal, oil and natural gas returns Carbon Dioxide to the atmosphere over a few decades that took many millions years to remove from the atmosphere. The problem is one of recognizing the true costs of energy sources. What we see on our electric bill or at the gas pump only includes the direct costs. The costs of externalities due to severe weather is not included.
How about a weather tax assessed to energy sources driven by fossil fuels? The money from this assessment could be used to rebuild and strengthen infrastructure, subsidize construction of more storm resistant residences, improve drainage, and expand reservoir capacity in drought prone areas just to mention a few. Basically we should use the funds to provide for the general welfare as is called for in our constitution.