Extreme weather: blame the huge atmospheric waves

1 Martre 2013. In recent years, the planet suffers from extreme weather events that occur in a particular region. In this devastating event was unprecedented flooding in Pakistan in 2010, as well as heat in Russia in 2011 and the U.S. in 2011. According to scientists from the Potsdam Institute for Climate Impact Research (PIK), these particular events have common physical causes — atmospheric behavior of giant waves. As it turned out, man-made climate change is constantly violated during atmospheric flows around the northern hemisphere.

"The global movement of air in the middle latitudes of the Earth usually takes the form of a wave that travels between tropical and arctic regions, — explains the study's lead author, Vladimir Petukhov. — Thus, these waves can pump hot air from the tropics to Europe, Russia, and the United States, or vice versa — cold air from the Arctic. "

Scientists have found that in time several recent extreme weather events atmospheric waves almost froze in place for a few weeks. Thus, instead of a long cold air coming time supported by the heat. In fact, there has been increased generally weak, changing each other climatic phenomena. Thus time plays a crucial role: the heat of 30 degrees Celsius for 30 days did not cause much damage, but the long dry periods cause negative consequences in the life of cities and agriculture.

Now it is clear that climate change caused by emissions of greenhouse gases from burning fossil fuels, does not mean uniform global warming. Reducing the temperature difference between the Arctic and, for example, Europe leads to changes in the behavior of atmospheric tides — they fall into a trap.

Source: CNews R & D

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