Melting ice leads to a sharp change in climate According to the scientists, the melting of the ice leads to an abrupt climate change in Europe and the U.S., pishetCorriere della Sera based on New York Times.
The Mayor of Iqaluit, the capital of the Canadian territory of Nunavut, had to cancel the parade snowmobiles, scheduled for New Year holidays. The reason: too little snow. And on the other side of the American continent, in Georgia, which is used to the scorching sun, Atlanta residents are forced to learn an unfamiliar work - snow removal.
What's going on? - Asks the author of the article.
The second year in a row Arctic cold hits the southern regions of Europe and the United States, while in Canada and Greenland winter temperatures recorded at 7 degrees higher than normal. This is a real change of climate. To blame the weakening of the atmospheric circulation, which plays an important role in maintaining the Arctic steady stream of very cold air - theorizes New York Times. Due to the weakening of the mass of cold air began to leave the North Pole, heading south. It is important to understand whether this phenomenon is associated with rapid climate change due to global warming.
Some scientists confirm the existence of this connection, others are convinced that recent climatic phenomena is nothing extraordinary and require more long-term studies, - the author writes.
Experts explain that the ice, an area which in recent decades has shrunk by more than 30%, have an important role in the reflection of sunlight. The shrinking of the polar ice cap in summer promotes the absorption of warm oceanic air masses. It is this heat accumulated in excess, and may be the main culprit of the harsh winters in Europe and in the United States.
According to the theories of the scientists in the northern hemisphere circulate fast air currents, called jet streams. It is assumed that the increased pressure difference between the polar regions and mid-latitudes leads to rapid wiring of cold air stream in a narrow range, which is formed near the North Pole. When the pressure difference is reduced, a jet stream weakens and begins to spread to the south, bringing cold masses in the middle latitudes, and warm currents - in the direction of the North Pole.
A similar effect is observed when opening the door of the refrigerator: the cold air flows into the kitchen, and the warm air of the room can, in turn, to penetrate into the refrigerator - explains the author.
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Dramatic Greenland Ice Melt due to global warming
Melting on Greenland Ice Sheet.
