The Central Meteorological Observatory announced that there was still cold air in June of 5438+ 10. What is the main reason for this extreme climate?

As we all know, the Central Meteorological Observatory has pointed out in the precipitation forecast that there was a large-scale rain and snow weather in China in 1 month. From the precipitation forecast map, the scope of rain (snow) is particularly large, covering most areas south of the Great Wall; Not only a large range, but also a large intensity, a large area of 25 mm (rainstorm) color; Although Guangdong can't keep up, the rain belt is actually pressing south, and Guangdong is going to rain. Therefore, this is probably the strongest rain, snow and wet cold this winter.

This large-scale rain and snow weather process is caused by the adjustment of East Asian circulation. A month ago, due to the long-term situation of "high in the west and low in the east", cold air swept through the central and eastern regions of Motoki Takahara, Mongolia, which prevented humid air from landing in China. Of course, it can't rain or snow Next, "west high and east low" should be adjusted to "west low and winter high". Both cold and wet airflow and warm and wet airflow will enter our country and fight, and both cold and wet airflow are very strong, so there will be such a big rain and snow forecast.

So this time, a wide range of rain and snow, a wide range of wet and cold basically did not run. But you still have doubts about "heavy snow in the south of the Yangtze River". As we all know, snow requires two conditions, one is sufficient water vapor, which is completely satisfied in the first ten days of June, 5438+10; The second is that it is cold enough, and the altitude above 1000 meters must be below -2 degrees, otherwise the water vapor will not freeze, snowflakes will not form, and it will not snow. According to the current situation, cold air will go south to the south of the Yangtze River, but the -2 degree line with an altitude of 1000 meters may be on the edge of the Yangtze River, and it is difficult for heavy snow to go south to the south of the Yangtze River. The greater possibility is the sleet along the Yangtze River, and the heavy snow is mainly on the Qinhuai line, that is, Henan, Shaanxi, and northern Hubei, Anhui and Jiangsu.

Of course, no matter where it snows, the rainy and snowy weather in 5438+ 10 will definitely bring wet and cold, which will affect traffic. Please be prepared in advance. Secondly, there are differences in climate around the world. The recent low temperature in China has its particularity, which is a local weather feature. However, other countries in the world still have warmer weather, which does not mean that the recent low temperature in China denies the prediction of the World Meteorological Organization.

Thirdly, the winter climate in China is quite special, and it is very typical to be affected by the Siberian cold current. Often a cold wave goes south, which brings cold weather to most countries in East Asia. The increase in the number of cold waves will also lead to low temperature and cold winter. Therefore, the performance of the climate in East Asia does not reflect that the global climate is a cold winter. Global cold and warm winter refers to the global average winter temperature. Global warming will become one of the warmest three years in the world, which refers to the global annual average temperature.

Fourthly, winter temperature statistics refer to the average temperatures of 65438+February, 65438+ 10 and February. It's just winter now, and today is 65438+February, 1 1. The cold of the past 20 days cannot represent the weather of the whole winter. In the next three months, the temperature may be high and appear.

Actually, the real cold hasn't come yet. Winter is the coldest time of the year. The climate is very complicated and influenced by many factors. The National Climate Center held a joint conference on national climate trend prediction this winter. It is predicted that there will be frequent cold air activities affecting China this winter, and there may be a large-scale strong and low-temperature rain and snow process in 65438+ 10. This judgment is very consistent with the objective reality of this winter, and the high probability of temperature is low, which is not contradictory to the warmer climate of the World Meteorological Organization this year. The weather this winter may be out of sync with the world.