Many experts of the opinion that Oklahoma tornado and others are being caused by global warming
As the residents of the suburban Oklahoma City, that witnessed a massive tornado tearing it apart, gathered pieces of what was left, while mourning the death of their loves ones,Â it gave birth to a questionÂ of whether the world would see more of these deadly tornadoÂ in wake of the global warming.
The Mondayâ€™s tornado that ripped apart two elementary schools and flattened neighborhoods was accompanied with strong winds estimated between 200 and 210 mph. The National Weather Service on Tuesday gave the twister a ranking of EF5. The tornado at some points was 1.3 miles wide, and its path went on for 17 miles and 40 minutes. The tornado was a result of the rotating thunderstorm. The thunderstorm developed in an area where warm moist air rose into cooler air. Winds in the area caused the storm to rotate, and that rotation promoted the development of a tornado.
In a number of studies that have been conducted in the past, it has been concluded that that the extreme weather events including the heavy rainfall and heat wave intensity are linked to climate change. The answer behind the mystery lies in the oceans of the earth.
Since a long time now the, oceans across the globe have accumulated a large percentage of the additional heat related to global warming. Since the warm ocean surfaces evaporate faster than cool ones and the warmed atmosphere holds more water vapour, the warming and water vapour fuel storms. In it was on the basis of this fact that MIT climate modeller Kerry Emanuel had said that that Hurricane Katrina would not have been as strong as it was in 2005 if it had occurred in 1980, when the atmosphere and sea surfaces were cooler.
In case of Tornadoes being an outcome of the global warming, is all about contrasts and gradients. The warmer temperatures over land surfaces create low-pressure systems while cold fronts from the north come with high pressures. When temperature and pressure gradients between highs and lows increase the clash can twist to form tornadoes. The greater the contrast, the greater is the force of the twisters.
The warmer air and warmer seas are melting Arctic ice, and the reduction has changed North Polar air circulation causing the “leakage” of cold air outside the Arctic Circle. Cold fronts previously contained within the polar vortex are now slipping out and melting Arctic ice has also altered the path of the branches of the jet stream.
In addition, winds have changed globally over the past half-century. Westerly winds have increased in both hemispheres, more so in the south These changes in global circulation patterns have climate scientists very worried.
Global warming is affecting many components of the global climate simultaneously, and the result is an increasing tendency for severe storms and other weather extremes. Though the scientists maintain that even though no one event is diagnostic of climate change, but it is certain that the climate is changing, and all weather events occur in the context of natural variability and the changing climate.
Though the same set of conditions will not be repeated each yearâ€”and tornadoes, like hurricanes, will not increase each year. But one thing that is certain is that the changing atmospheric and oceanic conditions underlie the changing patterns of weather which itself sets the stage for more severe storms, including even more punishing tornadoes.