Phenomenon for Germany, extreme cold hazard: a Threatening century-Winter?

About the North polar Region, a hazardous weather situation brewing at the moment. It is an extremely cold Winter threatens. Some forecasters warn. Munich - T

Phenomenon for Germany, extreme cold hazard: a Threatening century-Winter?

About the North polar Region, a hazardous weather situation brewing at the moment. It is an extremely cold Winter threatens. Some forecasters warn.

Munich - The scenario sounds scary. The West Wind brings in the Winter mild Atlantic air to Germany, comes to a Standstill. Instead, a cold flow from the East, the Russian winter, transported by air in the Federal Republic of Germany. The result: record-low temperatures and a winter of the Century. The scenario sounds dramatic, according to Reports in the Washington Post but by no means unrealistic. The meteorological phenomenon that could lead to, is the polar vortex split.

also read: The latest forecasts predict for Christmas currently warm temperatures.

winter of the Century: Why is it a polar vortex split as much cold can bring

A polar vortex split can occur if the winter weather in the Northern polar-Region of its usual dynamics. Normally, a polar vortex that transports mild air from the West to Central Europe, there is formed by the lack of sunlight. In irregular intervals there are, however, a so-called "strong heating", the temperature of the stratosphere in a few days to more than 50 degrees. In order to is warmer than the air further to the South, and turns around the winch. Instead of from the West, the air suddenly comes out of the East, the polar vortex breaks.

"New York Metro Weather" released this Animation of the phenomenon:

"About five to six times per decade, however, there is a so-called 'sudden stratospheric warming', the standing, can lead to the weakening and Southward shift of the polar lows, or, as it is now before even the formation of a high over the North pole. With other words: The strong West winds will be replaced by weaker or even due East winds," said climate researcher Dr. Martin Stendel from the Danish Meteorological Institute for the image.

The American TV weather channel "The Weather Channel" published a forecast:

winter of the Century: What happens when the polar vortex breaks down?

Without the "polar vortex" and Europe is missing an important defence against the cold weather from the East. The temperatures in Winter are much lower, because of the warming effect of the sea and ocean is missing. Land masses cool off in the Winter much stronger. In addition, the Gulf stream provides continuously heat to Western Europe, which is redirected by winds from the West to Germany. The Wind rotates the Russian cold is coming instead of Portuguese Mild to Europe and the Winter could be really cold.

So far it is not yet. A Strong warming of the Northern polar stratosphere occurs on average about every two years. How strongly it affects the winds and the Winter in Germany, depends on many factors, and can currently be impossible to predict. "According to calculations by the American weather service, NOAA, January will be mild. Still mild, it is hardly – and these calculations are from the 17. December, are so very out of date. The polar vortex sounds awfully dramatic. It is now derived from a century of winter. From my point of view completely over-hasty,“ said meteorologist Dominik Jung from the Portal Wetter.net to image.

climate scientist Professor Mojib Latif of GEOMAR Helmholtz centre for ocean research adds to the picture: "You can't say the next Winter before, although there are always relevant messages. That would be from my point of view crystal-ball gazing. The polar vortex may be for the current cold weather in the United States, but was thrown a lot of mess and nobody knows how he will develop in the coming weeks and months.“

winter of the Century: How dangerous is a polar vortex split?

The polar vortex split can bring a lot of cold. The Chance that a every two years, occurring weather phenomenon leads to a winter of the Century, are low. However, the polar vortex split is coming this year, especially early on, some weather experts. This particularly long cold air could come to Europe and the Winter against the February cold. Whether it is actually so, time will tell.

Also of interest: flood warning for parts of Bavaria - houses could be flooded

It will be uncomfortable for Christmas. The flood news service of Bavaria has given out on Sunday for parts of Bavaria, an official warning before the flood. In the city of Kempten in the Allgäu houses could be in the region of the Upper Iller flooded, informed of the service. The two highest reporting levels three to four. (More)

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Date Of Update: 25 December 2018, 12:01
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