Average winter temperature and weather in northern Europe

according to the specific situation, it will get hot in some places and sometimes, but it will get cold in other places and sometimes. The greenhouse effect does not mean that the temperature has been rising. In Europe, global warming will be manifested as getting hotter in summer and colder in winter. The greenhouse effect slows down the speed of ocean currents. It is getting colder and colder in winter in Europe. At the end of November, European countries were hit by snowstorms and cold currents, from Britain to Poland, from Germany to Greece, all of which were affected by sudden cooling to varying degrees. Heavy snow caused traffic chaos, power failure, school closure, and some people froze to death in the cold ... Why is it getting colder and colder in winter in Europe? Europe is particularly cold this winter. In North Rhine-Westphalia, Germany's most populous state, the thickness of snowfall is as high as 2 cm, and the airport was forced to close. Airport spokesman Tollsten Hillman told reporters: "I have worked in this airport for 11 years, and I can't remember anything similar happening in the past." In France, heavy snow caused some roads to be blocked, and the traffic jam in some areas reached about 5 kilometers long. The freezing cold caused three French people to freeze to death in the streets. At present, the government has declared a state of alert at level 2. The British authorities also issued a warning to people to prepare for the coldest winter in decades. In fact, cold weather has become a "routine" for Europeans. In March this year, the temperature in Paris, Berlin, Vienna and other cities dropped by more than 5 degrees compared with the same period of last year. There is a reason for the cold weather. Professor Stefan Ramsdorf of the German Institute for Climate Change told reporters that the winter temperature in European cities can generally be 9 degrees Celsius-18 degrees Celsius higher than that in other parts of the same latitude, thanks to the North Atlantic warm current. The getting colder and colder in winter in Europe is also due to problems in the circulation of the Atlantic Ocean current. The picture on the right is a schematic diagram of the circulation of the Atlantic ocean current. As shown in the figure, in the mid-Atlantic, an ocean current will move northward in the clockwise circulation. When this tributary moves to the sea near Norway, its warm seawater has cooled down. Because the temperature is too low, this ocean current begins to sink, then flows back to the south of the equator and is heated again, thus pushing the warm ocean current to flow to the north at high latitudes. Therefore, this ocean current will continuously bring heat to the North Atlantic region, making central and western Europe have mild climate conditions. But now, scientists have found that the Atlantic Ocean current, which brings warmth to Europe in winter, is slowing down. On November 3th, Harry Bladen, a scientist at the National Oceanographic Center in Southampton, England, published his research results in Science magazine. In 24, a research team led by him conducted a sampling survey between the Bahamas and the Canary Islands along 25 degrees north latitude to detect the salinity and density of water. Comparing the test data with the records in 1957, 1981, 1992 and 1998, it is found that since 1957, the speed of cold water return in the deep sea has dropped significantly, especially since 1992. Now, the speed of warm current in the North Atlantic has dropped by 31% compared with that of 5 years ago. Global warming is the main culprit. The slowing down of the Atlantic Ocean current means that the temperature of the North Atlantic and nearby continental blocks has dropped. This is the reason why it is getting colder and colder in winter in Europe. What is the reason that causes the North Atlantic warm current to slow down? According to scientists from the Hadley Center of the British Meteorological Office, the reason why the Atlantic Ocean current has changed is that the greenhouse effect caused by human beings has increased the amount of fresh water flowing to the Atlantic Ocean. Global warming has caused the ice sheet in Greenland and the ice and snow in the Arctic to melt faster, and a large amount of fresh water has been injected into the North Atlantic. The sinking speed of water is related to the salt content and density. The higher the salt density, the faster the sinking speed of water. Fresh water is lighter and less dense than salty seawater, and even cold water will not sink too deep. Therefore, the sinking speed of ice water melted in the North Atlantic drops sharply, and a large amount of fresh water accumulates on the ocean surface, resulting in the lack of power to move northward, slowing down and even eventually stopping. Will it get cold in winter in Europe According to ancient meteorological records, the air temperature in the north has dropped by 1 degrees in several decades due to the slowing down or stopping of ocean currents, and in the past ice age, the climate changed suddenly and sharply because the circulation system in the Atlantic Ocean no longer operated. Scientists, including Harry Bladen, predict that if the current slows down, the temperature in winter in Britain will drop by 2 degrees in the next 1 years, and if the current stops completely, the average temperature in northern Europe and western Europe may drop by 6 degrees or even 1 degrees in the next 2 years, which is a very obvious change and will make winter extremely cold. Scientists say that global warming does not mean that the temperature has been rising. In Europe, global warming will be manifested as getting hotter in summer and getting colder in winter. Some scientists believe that the earth is approaching the end of the solar temperature rising cycle, and global warming will eventually make the earth enter the next cold period. It can be predicted that if global warming continues, the temperature in Europe will drop further, and the temperature in warm northwest Europe will be as cold as Siberia now, and this process will last for a long time. This phenomenon shows that "we are indeed changing the climate, and it is urgent to formulate policies to protect the environment", said Kuedefis, an oceanographer at the University of Hamburg.