This is the greenhouse effect caused by extreme weather, hot very hot places, cold, very cold place. This phenomenon occurs because the greenhouse effect caused by global warming destroy the normal climate circulation, so that normal circulation can not be global. A few years ago, Hollywood released a description of climate disasters, specifically large, “the day after tomorrow” movie to show people coming out of a global horror of extreme weather disasters: tsunami, sudden sudden temperature drop, so the city quickly into a frozen world. Climate experts say the film’s many scenes are not groundless, the occurrence of many scenes have considerable scientific basis. The results show that the global climate system energy balance there has been one important “regulator” – the thermohaline circulation, in “switch regulator” opened, it is like a heat conveyor belt, the equatorial region of the heat pouring sent North Atlantic, and from the north back to the cold North Atlantic deep water. “Regulator” Once closed, the northern hemisphere, and temperatures will dip into the ice age. The next 100 years the average global surface temperature is expected to rise 1.4 ℃ ~ 5.8 ℃, this warming will be the last couple of years to the fastest century. As the temperature rises, more water will flow into the northern ocean planet (such as the icebergs melt, rainfall increase, etc.). After the integration of a large number of fresh water, with salt water north of the decline in water than in the past, the “lighter.” The “lighter” water is difficult to sink, thereby losing momentum flows back to the equator. No return of the north, the thermohaline circulation of the “switch” will be tightly closed. Once shut down thermohaline circulation, the temperature would only Nordic plunged 20 ℃.
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