If you are bathed in sweat on a very hot day, the probable cause is your own. Mankind responsible for causing the rising temperature of the earth to the role of greenhouse gases, according to a study published in the Nature Climate Change journal. Although not entirely responsible for climate change, 75 percent or three quarters of the cause is a greenhouse effect that is increased to exceed 95 percent.
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| The next day it’s unusually beastly hot, scientists say you can blame three-quarters of it on humans. As climate change gets worse around mid-century, that percentage of extremely hot days being caused by man-made greenhouse gases will push past 95 percent, according to a new study published Monday in the journal Nature Climate Change. (Picture from: http://bit.ly/1byp3UG) |
Human impacts are not sekentara on increased rainfall. A group of Swiss scientists who did the study found only 18 percent of heavy rainfall events caused by climate change. But if the Earth's temperature increased by 1.1 degrees Celsius, is expected by mid-century, about 39 percent of heavy rains caused by human influence, according to the study. The impact comes from greenhouse effect, especially carbon dioxide from burning coal, oil and gas.
"This new study helps explain how much the probability of human influence," according to Jonathan Overpeck, a climate expert at the University of Arizona, who was not involved in the research. "This is the key if you do not like to get extreme temperature, you know you can reduce the probability by reducing emissions of greenhouse effect."
Principal investigator in the study, Erich Fischer, a climate expert at ETH Zurich, a university in Switzerland, and his colleagues, Reto Knutti, check out just days most heat, or one-tenth of 1 percent of a hot day. By using 25 different computer modules, Fischer and Knutti simulate a world with no greenhouse effect emissions caused by humans and found the hot days occur once every three years.
Then they count how many times it happens with levels of heat-trapping gases and the number increased to four days. So three of the four days were very hot caused by humans, according to the team. And when the scientists increased levels of greenhouse effect to simulate the Earth at mid-century, they got 26 very hot days, or "almost a full month," said Fischer.
The figures were obtained by Fischer and Knutti an estimate for the whole world. They also found that Africa and South America has a number of very hot days caused by human influence, respectively 89 and 88 percent. In Europe, the percentage is 63 percent and in North America, 67 percent. In the middle of the century (2050), if emissions continue to rise at current growth rates, all continents will be able to blame at least 93 percent of a very hot day in humans.
Some scientists praised the validity of this study. When people ask whether an unusual weather events caused by human activity or merely the natural variation, it is the wrong question because both are always involved, said Michael Oppenheimer, a climate expert at Princeton University, who was also not involved in the study. This study, he said, asking the right questions: "How many people and how the changes are caused due to natural variation?"
And so the percentage of destruction, costs and mortality can be attributed to humans, it is easier for countries to assess the price of carbon dioxide emissions in an effort to control climate change, according to Drew Shindell, an expert from Duke University. *** [EKA | FROM VARIOUS SOURCES | US NEWS]
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