Warm winters are too early to draw conclusions.
I still remember that at the end of November and the beginning of December, when the sun was shining warmly, some netizens said that this year's winter was really warm. Some so-called experts have once again come out to repeat the argument of a warm winter, and have said that there is no obvious convincing basis for the anomaly of sea temperatures, the intensification of El NiƱo, global warming, and so on.
In fact, in the author's opinion, any temporary climatic phenomenon, can not be presumptuous conclusions, how miraculous nature is, everything follows the law of yin and yang. The scorching heat is not necessarily followed by a warm winter, and the possibility of a harsh winter is coming!
What's more, at the end of November and the beginning of December, it is just winter, and it is normal for the weather to be warm, but it is not normal for it to be warm. Because most of China's land latitude is not too high, such as the Yangtze River Basin, about 30 degrees north latitude, basically the same latitude as the northern Arabian Peninsula in North India and the coastal areas of North Africa.
If it weren't for the frequent southward movement of strong cold air from Siberia, the temperature in the middle and lower reaches of the Yangtze River this season would normally be around 10-15 degrees. So it is nonsense to say that the climate is warming and to conclude prematurely that this year will be a warm winter.
The cold wave hit, the temperature broke a record low, and slapped him in the face.
No, this powerful cold wave has hit in recent days, and the so-called expert warm winter remarks have been mercilessly slapped in the face. And the impact of this cold wave is far beyond imagination.
Most of the entire northern region suffered from high winds and heavy snowfall, which at one point caused many trains heading south from Beijing to be suspended. Beijing ushered in a low temperature of nearly minus 20 degrees Celsius in mid-December, and the average temperature in most eastern regions in December was close to or exceeded the record minimum temperature extreme.
And under normal circumstances, the lowest value of land temperature in China occurs at the end of January every year, which is the traditional 3949 days of the nine cold days of the lunar calendar. It can also be said that from mid-December to the end of January, most of the eastern part of the country is quite cold. Therefore, the probability that this year is a cold winter and not a warm winter is basically extremely great.
Take this topic to talk about the reasons why the winter temperature in our country is lower than most of the same latitude in the world:
In general, the temperature of a country is related to the height of the sun, the distribution of land and sea, the ocean currents flowing near the continent, and the tall mountain ranges.
First, the sun directly hits the southern hemisphere in winter, the solar altitude angle in our region is at the bottom, and the solar thermal radiation is not enough, and China is in the eastern part of the world's largest Eurasian continent, and the Siberian polar and subpolar continents with sharp contrast in specific heat capacity in the north, and it is particularly easy to form a cold high pressure area in winter, and the southern pressure forms a cold wave to invade most parts of our country.
The second is that there is a lack of tall mountains in the east and west of China, and it is powerless to stop the invasion of cold waves. Only the Wuyi Mountains and the Nanling Mountains slightly block the cold air from the south, so the temperature in Lingnan and Fujian, including Taiwan, is higher than that of inland provinces at the same latitude.
The third is that the ocean along the coast of China's mainland is relatively closed, not in the mainstream of the warm current around the northwest Pacific Ocean, and the influence of the warm current of the winter ocean current on the coastal area of China's mainland is very limited. Only Guangdong, Fujian, Taiwan and Hainan can be moistened by the warm ocean current, and the temperature is relatively warmer.
These are the main reasons why most of the eastern part of China is prone to cold waves in winter, and the temperature is lower than that of other countries and regions at the same latitude.