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2021 is a "double La Niña year", and generally in a "double La Niña year", the activity of air bodies is more obvious. National Climate Center**, the cold air that will affect China in the winter of 2021 will be active and intense, and the temperature in the central and eastern regions will be generally cold.
Experts in climate services at the National Climate Center pointed out that it is expected in January-February 2022, namelyDuring the Spring Festival in 2022, the cold air activity will increase significantly, and the temperature in most parts of the central and eastern regions may be lower than normal, and the temperature will be extremeCold spellThe probability of an event is higher. Therefore, the weather is likely to be very cold during the Spring Festival in 2022, and there will be extreme cold wave events.
The first is to be vigilant against the impact of extreme cold events and strengthen monitoring and early warning. The public must pay attention to the weather forecast issued by the meteorological department.
The second is to do a good job in cold and frost protection of vegetables and other crops. In the northern facility vegetable production area, it is necessary to strengthen greenhouses and other facilities in time, clear snow in time, and supplement light in time to promote the growth and development of facility vegetables; Adjust the temperature and humidity to enhance the thermal insulation and cold resistance of the facility. In the open-air vegetable producing areas of the north, people use non-woven fabrics and straw to protect themselves from the cold.
Ripe vegetables are harvested in time and marketed as soon as possible, or stored locally.
In the open-field vegetable production area of South China, timely ditch cleaning helps to drain and reduce humidity, and at the same time sprays foliar fertilizer and plant growth regulators.
Wait. will improve stress resistance. In the southern fruit producing areas, it is necessary to speed up the harvesting, and take the measures of mulching and spraying nutrient solution according to the actual situation.
Smoking in the orchard and other cold and frost protection measures.
The third is to do a good job of keeping livestock and poultry warm. Do a good job of cold protection in advance, keep poultry and livestock in captivity in time, and prepare enough food; Diet can improve the ability to keep warm and cold, and you can supplement more high protein every day.
High-calorie foods that are supplemented to protect against the cold.
Fourth, pay attention to clothing and keep warm. In particular, it is necessary to do a good job of keeping the elderly and infirm patients warm from the cold. Residents who use coal stoves and charcoal for heating should also beware of gas poisoning.
and carbon monoxide poisoning.
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How low can a temperature be called extreme cold? What is the definition of extreme cold weather? Li Xiaoquan, chief meteorologist at China Weather Network, said that there is no clear meteorological definition of extremely cold weather, because the climatic conditions are different in different regions.
For example, when the temperature in the coastal area of Guangdong is about 0°, people will feel extremely cold, which can be called extreme cold; But in the north, if not extreme cold, freezing degrees are common. There is cold air activity in the central and eastern regions. From the first day to the fifth day of the Lunar New Year, there were moderate-intensity cold air activities in the central and eastern regions.
Among them, the first to third days of the Lunar New Year affect the eastern part of Northwest China, North China and Northeast China, and the fourth to fifth days of the Lunar New Year affect the Huanghuai, Jianghuai and Jiangnan regions. There are 4 6 northerly winds in the above areas, the temperature drops by 4 8, and the local temperature exceeds 10. There is more snowfall in the northeast of Inner Mongolia and the northern and eastern parts of Northeast China, and heavy snow falls in the north of Heilongjiang and northeast Inner Mongolia.
From the night of the third day to the fourth day, there was weak snowfall or sleet in North China and Huanghuai; On Chinese New Year's Eve, winds in the southern part of the East China Sea can reach 7 9. The recent frequent extreme cold weather in various places is related to the climate Arctic oscillation.
The severe cold wave in Europe, the blizzard in Japan, and the low temperature in China are all chains of extreme weather events caused by the same atmospheric circulation anomaly. In addition, La Niña events also have an impact on cold weather. Both climatologists and meteorologists believe that sudden changes in temperature in an instant are normal atmospheric changes, but the reason is difficult to explain.
Weather conditions are not set in stone, with extreme cold in some places and extreme heat in others, but overall, the frequency of extreme events has increased in recent years.
Light to moderate rain in the south. From Chinese New Year's Eve to the first day of the new year, there was light rain in Jianghuai and eastern Jiangnan. Around the fifth day, there was light to moderate rain in Jiangnan and northern South China.
From the second day to the sixth day, it was rainy and rainy in the eastern part of the southwest region. Climate warming is causing changes in other elements of the climate system, in particular changes in freshwater fluxes and salinity in the North Atlantic caused by melting polar glaciers, land surface runoff and precipitation, which may further lead to the weakening or collapse of the global thermohaline circulation, abruptly bringing the global climate from a period of rapid warming to a cold phase. Therefore, it is normal for a warming climate to lead to abrupt changes in the climate, and to enter a period of cold climate.
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The weather in various places is relatively cold, especially in some areas in the north, in the northeast of Inner Mongolia, there is an extremely cold situation, and there will really be extremely cold weather, and the temperature can reach minus 20 degrees.
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It is not yet the Spring Festival period, so the weather in various places has not yet been clarified, and the temperature has not yet been reported. It is true that there will be extremely cold weather, but it should not occur in our country.
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The weather here is very cold, and there is cold air during this period of time, which has caused a certain impact, and it is indeed extremely cold weather.
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In different regions, the climate is also different, and the weather is relatively cold; Recently, there is a lot of air, and there will be extremely cold weather.
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There will be extremely cold weather in the northeast and northwest.
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In 2022, the weather will be cold this year. According to the calendar, the spring is relatively long, and the winter will not be particularly long, and in terms of temperature, the temperature in recent years has been relatively warm, and there has been no extremely cold weather, so 2022 will not be the coldest year, and due to global warming.
According to this practice, 2022 is very likely to be a warm winter.
What to say about the super cold winter of 2022:
There is no scientific basis. In recent years, there has always been a saying of super cold winter, in fact, although the climate has warmed, the weather has begun to change, and there is a possibility of cold winter and warm winter, and super cold winter is extreme weather.
At present, the existence of this kind of weather is relatively small, and the possibility of a general winter climate in 2022 will be stronger.
Winter weather is always cold, in the outdoor environment it is best to do a good job of cold protection, warm measures, to avoid frostbite, in addition, in the air quality.
In areas that are not very good, you can wear a mask to protect your health.
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The temperature during the Spring Festival in 2022 is 4-6 degrees.
The Spring Festival in 2022 is exactly in the fifth and ninth days, that is, according to the number of nine songs, the beginning of the winter solstice to the New Year, the Spring Festival in 2022 is just the end of the five-nine, and according to the normal law, the five-nine tail should not be very cold, but this year's weather is relatively abnormal, according to the current weather trend, it is expected that the 2022 New Year will be cold.
Will it be cold during the Spring Festival
The number nine starts from the winter solstice solar term, so December 21, 2021 is the first nine, and December 30, 2021 is the twenty-nine, of which 1929 does not shoot, and 3949 walks on the ice, which means that it will start to freeze when it comes to 3949, when the weather is colder.
The Spring Festival of 2022 is before the beginning of spring, and the temperature will drop compared to last year's Spring Festival, and it will not suffer from the cold weather of spring, but there are too many factors that affect the winter climate.
Therefore, it is still unknown whether the Spring Festival in 2022 will be cold or not, but even if it is too cold, it will not be as cold as the weather in 2008, but the specific weather conditions are mainly real-time. The probability of a cold winter in 2022 is 66%. Because according to the latest news from the National Climate Center, 2021 may be a double La Niña year in China.
According to historical statistics, there have been 15 La Niña events in history since 1951, and not all of these 15 La Niña events have been cold winters.
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The specific ** opinions are as follows:
1. In winter, the temperature in most parts of the country is close to the same period of the year or high, and the phased characteristics of temperature change are obvious, with the first winter being warmer and the latter winter being colder.
In winter, the temperature in the eastern and western parts of Inner Mongolia, the northern part of Northeast China, most of South China, the southeastern part of Southwest China, and the central and eastern parts of Northwest China was lower than that of the same period in normal years, and the temperatures in the northeast of Inner Mongolia, Heilongjiang, western Shaanxi, central and eastern Gansu, northeast Qinghai and Ningxia were lower than those in the same period of the year.1 2 The temperature in the rest of the country is close to the same period of the year to high, and the temperature in Shanghai, Jiangsu, Zhejiang, Anhui, northeast Jiangxi, Shandong, eastern Henan, and northeast Hubei is higher 1 2 (see Figure 1). From December 2022 to mid-January 2023, the intensity of cold air affecting China is weak, and the temperature in most parts of the country is higher than that of the same period in normal years. From late January to February 2023, the intensity of cold air gradually strengthened, and the temperature in most parts of Inner Mongolia, most of Northeast China, North China, Central China, West South China, East and North of Southwest China, and most of Northwest China was lower than that of the same period in normal years.
Fig. 1 Forecast map of average temperature anomaly from December 2022 to February 2023 The precipitation in northeast Inner Mongolia, the northern part of Northeast China, and most of Northwest China was higher than that in the same period of the year, and the precipitation in northeast Inner Mongolia, central and northern Heilongjiang, western Shaanxi, central and eastern Gansu, northeastern Qinghai and most of Ningxia was 2 5 percent more. The precipitation in most of the rest of the country is close to the same period of the normal year to low, and the precipitation in Shanghai, Jiangsu, Zhejiang, Anhui, northern Fujian, northern Jiangxi, Shandong, eastern Henan, eastern Hubei, northeast Hunan, and most of Yunnan is less than 2 5 percent (see Figure 2).
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It is expected to last until the winter of 2022 2023, the first "triple" La Niña in the 21st century. "Triple" means that the phenomenon has lasted for three years and has caused related disasters around the world. La Niña is generally considered to have cold winters throughout the year
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The Spring Festival of 2021 is February 12, 2021, and after a week of the beginning of spring, the weather will not be too cold, it will be relatively warm.
According to the China Meteorological Administration**, in the winter of 2021, the temperature in most parts of China will be close to or higher than in previous years. So basically, it won't be too cold this winter, and there won't be much snow either.
Now there is a popular saying that is "the winter solstice is clear, the first month is rainy; Winter solstice rain, the first month is clear", that is to say, if it is a sunny day on the day of the winter solstice solar term, there will be more rain in the first month, and the rainy day (snowfall) will be the main day during the New Year.
In recent years, China's natural weather has been affected by the El Niño phenomenon, so the winter of 2020 is a warm winter season, not particularly cold.
In addition, during the first month of 2021, there are occasional days of low temperatures, and the rest of the time is relatively warm.
This year's Spring Festival is after the beginning of spring, and it is generally cold for about a month after the beginning of spring. The beginning of spring has arrived, but the temperature will not rise so fast, and as the old saying goes, it is not recommended that everyone take off their winter clothes too early and put on bright spring clothes, especially the elderly and children, should pay more attention to keeping warm.
Meteorological significance, winter is over when the average daily temperature is above 5°C for 5 consecutive days. But the Spring Festival weather is different in each region.
In recent days, the most heard word is typhoon, affected by Bawit, many parts of China have been severely affected, especially Liaoning and Qingdao. Heavy rains have caused severe waterlogging and cars are floating on the road. Do you think that's all there is to this year's typhoon?
In fact, this year's torrential rains, floods, and typhoons have a lot to do with El Niño.
The so-called El Niño refers to the sea water near the equator in the eastern Pacific Ocean, and if the temperature is high, it will produce El Niño for a period of time, and vice versa, if it is low, it will form La Niña. Before El Niño subsided, scientists expressed new concerns, because the sea surface temperature near the Pacific Ocean had already been low for several months, and if this state of affairs continued, it would mean that La Niña was almost certain.
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The weather is cold every year during the Spring Festival, and 2021 will be no exception.
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