Minimum temperature of La Nina weather

From 10, cold air gathered in Siberia, while cold air from North China and Huanghuai went south, with mild to moderate haze. The temperature in Inner Mongolia and Northeast China was relatively high, and the lowest temperature of-15℃ appeared in many places. In the area north of the Yellow River, the temperature has dropped below 65438 05℃.

Of course, the real cold air is still brewing. Under the influence of the westerlies in North America, the Arctic vortex will be driven over Siberia, forming a cold air mass. Coupled with the containment of the warm ridge in eastern Europe, the cold air mass can only be forced to go south, reaching Altai Mountain-Hindu Kush Mountain 165438+ on June 4, and then going south in a big way.

In fact, on June 365438+1October 3 1 day, there was a blue warning of blizzard in Altay, Xinjiang, which was about to set off the peak of strong cold air. According to the forecast of the Meteorological Observatory, there will be snowstorms and heavy blizzards from June 5438+065438+1 October13, and some areas will be extremely heavy. With the arrival of this round of blizzard, the temperature in northern Xinjiang will also drop rapidly, with the lowest temperature below -20℃ and the highest temperature below-15℃.

From the super-calculation analysis, on June 5438+065438+1October 4, the cold air mass will go south from Xinjiang, thus affecting the north and south of China, and this is also the strongest cooling in the second half of the year, which is stronger than the last cold air.

As for the specific cooling amount, it needs further verification, but this cooling will push the 0℃ line to the south of the Yellow River, and the lowest temperature in many places in Shandong will drop below 0℃, and the Huaihe River area will also drop to -5℃, and the local temperature will drop overnight 10- 15℃.

The Meteorological Observatory predicts that under the influence of this strong cold air, there will be snowfall in the northern, northeastern and northwestern parts of North China, with heavy snowstorms in the northeast and sleet or light snow in Beijing, Tianjin and Hebei. There will be rain in Jianghan, South China, Jiangnan, Southwest China, Northwest China and Southeast China, and there will be heavy snow in Jiangnan and South China.

To sum up, affected by this round of cold air, the temperature in the north and south will drop by 6-9℃, and the local temperature will drop by 10- 15℃. From Xinjiang to Jiangsu, Zhejiang and Shanghai, from the northeast to Hainan Island, it will be cooled or snowed because of cold air.

This cooling, many places in the north ushered in the first snow in winter, and the northeast should pay attention to the risk of snow disaster. There may be a temperature drop of about 10℃ in South China, and heavy rain will hit South China in the south of the Yangtze River, and many places will enter winter overnight.

The cold air hasn't really arrived yet, so everyone must take cold-proof measures and find out the thick clothes at home. For farmers, we should also take preventive measures in agriculture and plant wheat quickly.

02. La Nina has determined that this year is a cold winter?

1June 14, the United States announced the existence of La Nina, and on June 25th, 10, China also announced that this year will usher in a moderate intensity La Nina event, which means that La Nina has been confirmed.

La Nina's influence on China includes two aspects. First, the probability of low temperature is high, because cold air is frequent, and the temperature in most parts of the country is not too high; Secondly, rainfall and snowfall are more frequent, and at the same time it will form a situation of "drought in the south and waterlogging in the north".

For example, the snowstorm in South China in 2008 was caused by La Nina. Under the influence of four consecutive strong cold air, 20 provinces in China suffered from rain and snow freezing. The La Nina incident in 2020/202 1 also ushered in two "overlord-level" cold waves in China.

Because of this, many people say that this year will be a cold winter. In fact, La Nina does not necessarily make the temperature cold. Since 1950, there have been 15 La Nina years, of which 10 is a cold winter and 5 years is a warm winter. It can be seen that La Nina's probability of cold winter is relatively large, which is twice that of warm winter.

However, La Nina does bring a big cold wave, but even if there is a cold wave, it is not necessarily a "cold winter". For example, the La Nina event in 2020/202 1 brought two phenomenal cold waves, and the south also ushered in a great cooling and even snowfall. The lowest temperature in many places in the north broke the 60-year record, but it was still warm winter from 65438+February to the following February, mainly because the temperature in many places broke the 60-year record in February.

As for whether this year is a cold winter, some experts have analyzed that this year is a "Double La Nina" year, and it is more likely to be cold in winter. However, some people think that the temperature will continue to be high in February this year, and the possibility of warmer in the whole winter is still very high.

The Winter Olympics will be held in Beijing from February 4 to February 20 next year. However, it is reported that the Winter Olympics may require artificial snowfall. As for why, some experts analyzed that the temperature in February continued the higher temperature in February this year, so funa was the only venue.

In fact, the temperature in PyeongChang Winter Olympics on 18 is also very high, so South Korea has no choice but to go to funa in advance. Therefore, the Beijing Winter Olympics should also make emergency preparations in advance to avoid the embarrassment of relying on the weather to eat. At the same time, funa can change the hardness, particle size, water content and other information of snow to meet the needs of various venues.

In recent years, influenced by the greenhouse effect and global warming, the temperature in winter has gradually increased. Even if La Nina appears, it is difficult to change the fact of warm winter. However, global warming has brought more and more extreme weather, such as excessive rain in northern China this year, floods in Europe and heat waves in North America.

I hope everyone can protect the environment, put emission reduction into action and delay the negative impact of global warming.