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Buckle-Up Yourself, The Arctic Vortex Is Shifting

Climate change has hit the Arctic eviler than ever in the past few years, but that does not mean the Arctic Hemisphere is going to be suffering from a mild winter this year (2016). Actually, a new research indicates that the Arctic vortex is shifting, and it will cause winters on the east coastline of the US and in different regions of Europe even longer, with remarkably cold temperatures estimated during March. The polar vortex is that beautiful zone of icy air that whirls around the Arctic throughout the winter. When quantities of the vortex break away from each other and splinter off, it can cause unexpectedly cold disorders in late-wintertime and early-springtime in the Arctic Hemisphere.

NASA

This occurred in early 2014, as you can realize in the satellite image directly above, and caused an exciting weather incident in different regions of northern US and Canada. But not every person understand there are in fact two polar vortices: the stratospheric polar vortex, which is almost 19,800 meters (65,000 feet) directly above the surface of the Earth; and the tropospheric polar vortex about 5,500 to 9,100 meters (18,000 to 30,000 feet) directly above the surface. Generally, when the weather analysts are talking about the Arctic vortex, they are discussing to the tropospheric vortex, which is the one and only that tears apart and drops cold air in the direction of mid-latitude towns or cities, such as New York.

But this study regarded at the stratospheric Arctic vortex, which can have a larger, but more delicate result on mid-latitude climate. After looking at satellite figures in the past three decades, the scientists revealed that the stratospheric polar vortex has steadily been moving in the direction of the Eurasian continent, and getting fragile over the past thirty years. That might look like a decent thing for warm climate lovers, but a fragile polar vortex means a vortex that is more possibly to break, and those breakings are what send unusually late winter discharges of cold air down to the rest of the globe. When the polar vortex is solid, instead, all that cold air acquires confined nicely in the Arctic sphere where it usually is at that time of year. The fading of the polar vortex is not essentially new, it is something numerous researches have revealed over recent years. But this research also indicates that the vortex is going away from North America and near Europe and Asia in February each year, and that could affect the east coastline of the US to get even more cold.

Jason Samenow for The Washington Post writes, "The weather prediction is complex, but the research says this shift has a tendency to result in more of a rise and fall in the jet stream over the east coastline in March, which pointers to colder temperatures."

The study also discovered that this vortex shift is "closely connected" to dwindling sea snow coverage in the Arctic, mostly in the Barents-Kara seas, and more snow cover over the Eurasian area.
But that connection is still a little weak. The main problem here is that scientists have found a association, but no one has been able to display just how melting ice in the Arctic sea is triggering the polar vortex to shift.

James Screen, a weather scientist at the University of Exeter in the United Kingdom, who was not part of the study, told Samenow "I supposed the paper offered satisfactory evidence to support its assumptions, but clearly one paper is not going to solve an issue. The problem with best if not all of the Arctic or jet stream researches has been the lack of a strong physical effect and effect relationship, with connections found but method as yet uncovered.”

Scientists admits they do not have all the solutions just yet, but that the bond between the polar vortex and Arctic ice loss is worth inspecting further.

They conclude, “The possible vortex shift in answer to dogged sea-ice loss in the prospect, and its connected climatic effect, deserve devotion to better compel future climate variations.” 

Awkwardly, scientists will have many opportunity to discover this bond this winter, with the temperature in the North Pole 36 degrees Fahrenheit or 20 degrees Celsius warmer than it should be at present, and the ice panes struggling to freeze up.

The study has been printed in Nature Climate Change.

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