The jet stream that changed as a result of the warming of the North Pole caused the current winter mirages

Scientists warn that the jet stream has become unstable and started to rotate in curls instead of a straight line. These changes caused the weather mirages in recent weeks, and especially cold waves in the US and Europe

Scientists reported that the trajectory of the jet stream is changing, resulting in changes in the weather systems in the US and Europe. Some link this to the effect of the faster warming of the Arctic region, which is more than twice the rate of warming of the entire globe.

The jet stream is a narrow band system of fast winds in the upper part of the Earth's atmosphere. These winds are responsible for moving weather systems around the world. Scientists are particularly concerned about the polar jet stream affecting weather patterns in the northern parts of Europe and North America.
At the last meeting of the American Association for the Advancement of Science held last week in Chicago, Prof. Jennifer Francis, an expert in marine and coastal sciences from Rutgers University in New Jersey, warned that the jet stream has become longer and more wavy. The phenomenon can explain the changes in weather patterns in the northern parts of the world.

The jet stream is what prevents the cold weather in the arctic region from descending south to low latitudes and the warm air from the tropical regions from reaching the arctic regions. Because storms tend to move along the jet stream, weather patterns tend to go crazy below the edge of the jet stream. The current changes in the jet stream are apparently responsible for the arctic depression that covered the USA last winter. Francis claims that such effects have been documented in many northern countries. "In the northern hemisphere, the jet stream moves from west to east in a wavy path."

Britain was notorious for its very fickle weather. Due to the meanderings of the jet stream, the country has already experienced long bouts of rain and extended periods of sunny weather. The current trend can be explained by the lengthening of the jet stream, which can cause the weather to be stuck in certain areas for longer periods of time.

When asked by the Rutgers University website if climate change is to blame for the disruption of the jet stream, Francis replies: "We cannot say that these extreme weather events are occurring because of climate change, but we can say that it is highly probable. It should be noted that when there is a depression in one place, it almost always causes a northward deflection of the jet stream and a ridge on each of the two sides of the stream. This is certainly the case now, and the result is a warmer than usual winter in Alaska, drought conditions in California as well as an extremely warm winter in Scandinavia."

http://www.youtube.com/watch?v=IyuVss0w6J8

For information on the Rutgers University website

On the same topic on the science website: The weather in the USA is going crazy: the east is freezing, the west is suffering from a drought