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Abnormally cold winters with heavy snowfall in the Northern Hemisphere caused the melting of ice - VIDEO PDF Print E-mail
Thursday, 03 September 2015 16:20
unusually cold winters of recent years in the northern hemisphere were generated not by common variations in climate, and in two different reasons - the melting of ice in the Kara and Barents Seas in Asia and in the ChUKchi and East Siberian seas for the New World, say climate scientists in an article in the journal Nature Geoscience . The last two or three years, the north of the United States and southern Canada experienced an abnormally cold winters with heavy snowfall, very low temperatures, which not only caused massive inconvenience to residents, but also forced to empty the heating company reserves of natural gas, and even slowed the growth of the economy. A similar situation was observed in the north of Asia. Chihun Chon (Jee-Hoon Jeong) of Chonnam National University in Gwangju (South Korea) and colleagues found that both of these anomalies were generated not only to climate change, and two similar but not related to each other processes in the Russian Arctic. As the scientists explain, the most noticeable effects of global warming can be seen in the Arctic, where average summer temperatures have had time to grow a few degrees over the past half century. This temperature increase, in turn, causes serious restructuring in the whole of the global climate system. By studying satellite and terrestrial data on changes in the Arctic climate over the past 20-25 years, Chung and his colleagues found that global warming is the strongest impact on the two corners of the north: Barents and Kara Seas in one case and the East Siberian and ChUKchi seas - in second. The release of large areas of sea ice and warming, according to calculations Korean climatologists led to massive restructuring in the system of winds over the northern regions of Asia and America. As a result, there was two powerful anticyclone over the western and eastern Russian Arctic, through which cold air masses are transported to the North Asia and North America. The cold snap, according to Chong and his colleagues occurs in the New and Old World rather quickly - revitalization of the western anticyclone causes freezing in Asia in two weeks, and the "inclusion" of its eastern counterpart - cold weather in the US and Canada, just five days after that. Scientists hope monitoring the state of these anticyclones in the future, help predict early onset of particularly cold weeks during the winter in these regions and to prepare for their attack.

НАЖМИТЕ ЗДЕСЬ ДЛЯ ПРОСМОТРА ВСЕГО СПИСКА НОВОСТЕЙ О НЕОБЫЧНЫХ ЯВЛЕНИЯХ>>>

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