Moscow suffered the biggest snowfall in 50 years. What are the causes of abnormal climate?

According to the latest weather forecast, Moscow, the capital of Russia, is called a fighting nation. Moscow is also very cold in winter, and the temperature is often around MINUS 30 degrees. Recently, due to the snowstorm, the snowfall in Moscow broke the record.

From Northeast Asia to Russia, from Western Europe to the Great Plains of the United States, there have been heavy snow and great cooling to varying degrees. There are indications that this winter will be the coldest year in more than 30 years. Looking back at the recent Copenhagen Climate Change Conference, all countries are saving energy and reducing emissions to curb global warming.

In the past, winter in Russia already existed? Ice and snow? To describe, but need to add this year? More? Word, the capital Moscow has several times of heavy snow, Russian media said that in less than a few hours, the whole Moscow became a big snowball. More like Sakhalin Island, there are many avalanches after the snowstorm. After the avalanche in the North Caucasus, several Russian journalists were buried and finally rescued with the help of rescuers.

How did this abnormal weather happen? The National Climate Data Center of the United States replied:? What we actually see is a large-scale outbreak of Arctic air mass in densely populated areas in the northern hemisphere. He further explained that in the northern hemisphere, airflow usually flows from west to east, thus forming a barrier to prevent the Arctic air mass from going south. Recently, however, the movement pattern of airflow is abnormal, and it has become a north-south flow. In this way, if the airflow in your area comes from the south, there will be warm weather. For example, Alaska, USA, this week's temperature is the highest in history; However, in some less fortunate areas in the northern hemisphere, the situation is just the opposite. The continuous influx of cold air from the Arctic is also the reason why the temperature in Beijing, Norway, Britain and other places has hit record lows. This abnormal phenomenon of atmospheric circulation occurs from time to time, but it is not clear why it is so strong this time. It is reported that this abnormal circulation pattern will gradually weaken in the next one to two weeks.