Why can t you just open your mouth and say that a cold wave is coming in winter?

When the cold air breaks out severely, and then the temperature is particularly low is the cold wave, and the cold wave is also a particularly terrible thing, then everything will freeze on the ice, then the weather becomes cold, it can only be said to be a change in climate, and it has nothing to do with the cold wave.

The cold wave is a natural disaster, when the cold wave comes, it can reach a temperature of more than 10 degrees, accompanied by strong winds, rain and snow, which often brings a natural disaster that affects people's lives.

Because a cold wave is not a good thing, some people may subconsciously cool down when a cold wave comes, but a strong cold wave may cause natural disasters, so it is not necessarily a good thing.

Cold wave is a kind of disastrous weather, the season is in late autumn, winter, early spring, will cause severe cooling, wind, rain and snow weather, agriculture, transportation, electricity, etc., so that people's health is harmed.

This is because the so-called cold wave is a type of strong cold air that blows from Siberia and is a natural disaster. It's like we can't just open our mouths and say ** is coming.

A cold wave is a process of intense cooling of large-scale cold air (cold high pressure on the pressure field) that invades China from the west or northwest of the Asian continent. In the weather forecast, it is defined as a cold wave weather process when the temperature is cooled within 24 hours due to the invasion of cold air from the north10 and the minimum temperature reaches below 5. Sometimes the invasion of cold air from the north does not meet this standard, but the cooling is also significant, and it is generally called strong cold air.

In areas where cold waves or cold air fronts pass, there is often not only a strong cooling, but also high winds and precipitation (rain, snow). The formation of the cold wave is due to the continuous accumulation and strengthening of the cold air mass in Siberia in winter, and when it becomes a strong cold high pressure, under the guidance of the northwest airflow behind the high-altitude low-pressure trough, it invades southward, so that a cold wave or strong cooling weather process is formed in the vast area north of the Nanling Range in China. There are three main paths to the cold wave that invades our country:

West Road: From the western part of Siberia into Xinjiang, China, through the Hexi Corridor to the southeast; Middle Road: After entering China from Central Siberia and Mongolia, it will go south through the Hetao region and Central China; From eastern Siberia or eastern Mongolia, it enters the northeast of China and goes south through North China.

Cold Wave: The work outweighs the fault.

A cold wave, when a large number of strong cold air moves southward, is like a tidal wave, causing violent cooling and high winds along the way.

The "pass" of the cold wave is the most impressive, and it seems that when we talk about it, it will be associated with disastrous weather.

However, the benefits of the cold wave to human beings seem to be rarely mentioned. Research analyses by geographers have shown that cold waves contribute to the exchange of heat at the Earth's surface. As the latitude increases, the Earth's reception of solar radiation energy gradually weakens, so the Earth forms tropical, temperate and cold zones.

Cold waves carry a large amount of cold air into the tropics, causing a large-scale exchange of ground heat, which greatly contributes to the ecological balance of nature and the flourishing of species.

Meteorologists believe that the cold wave is the guarantee of good wind and rain. China is affected by the monsoon, and the climate is arid in winter, which is a dry period. However, whenever the cold wave invades the south, it often brings a wide range of rain and snow, alleviating the drought in winter and benefiting crops.

Why can the agricultural proverb "Ruixue Zhaofeng Year" be circulated among the people through the ages? This is because snow water has a high nitrogen content of more than five times that of ordinary water, which can greatly increase the nitrogen content in the soil. Snow water also accelerates the decomposition of soil organic matter, thereby increasing the amount of organic fertilizer in the soil.

Heavy snow covers the overwintering crops, acting like a quilt to resist the cold and keep warm.

There is a saying that "if the cold winter is not cold, the coming year will not be abundant", which also has its scientific truth. Experts in crop pest control believe that the low temperature brought by the cold wave is the most effective natural "insecticide" at present, which can kill a large number of pests and bacteria lurking in the soil for winter, or inhibit their breeding, and reduce the pests and diseases in the coming year. According to the survey data of agricultural technology stations around the country, pesticides can be saved by more than 60 percent in the year of heavy snow and winter.

Cold spells can also bring wind resources. Scientists believe that wind is a valuable source of power without pollution. Japan's Miyakojima Wind Power Plant, which is attracting worldwide attention, is twice as efficient as usual during the cold wave.

Excerpted from World Science and Technology Translation, 1998, 1-14

1. Is what we usually call cold air a cold wave?

In winter, we often hear weather forecasts on the radio or on television: "A strong cold air from the north is moving east and south, and it is expected that from tomorrow morning, our city will be affected by it." "A strong cold air" here is generally a cold wave, why is it said that "it is generally a cold wave", but not "it is a cold wave", because ** meteorological observatory has the following regulations:

The temperature in the middle and lower reaches of the Yangtze River and its northern areas should be reduced by more than 10 within 48 hours, and the minimum temperature in the middle and lower reaches of the Yangtze River should be below 4 (the minimum temperature in the Jianghuai region will be changed to 4 in spring and autumn), and the cold wave warning will be issued with 5 7 strong winds on land and 6 8 strong winds at sea. It can be seen that cold air is not necessarily a cold wave, and cold air can only be called a cold wave if it reaches a certain standard.

2. Why do cold waves occur more in late autumn, early winter, late winter and early spring, but less in midwinter?

The criteria for a cold wave only consider the magnitude of the cooling. Spring and autumn are the periods of large-scale mean circulation adjustment, and the frequent replacement of cold and warm air is greater, so the number of cold air activities is more, and the probability of cold wave is also greater. In the middle of winter, cold air has occupied an absolute advantage in most parts of China, the weather situation is stable, and the number of cold air activities is correspondingly reduced compared to a certain place, so the cold wave weather process is less. In summer, due to the northward shift of the direct sun point, the cold air retreats to high latitudes, so China is rarely affected by it.

3. Among the cold waves that invaded China, why did the cold wave in the middle of the road have the greatest impact on China?

Some people divide the cold wave that invaded our country into three roads according to the path: the west road, the middle road and the east road. The cold wave of the West Road enters Xinjiang from western Siberia, crosses the Loess Plateau into the North China Plain through the Hexi Corridor, and finally moves east into the sea. However, the cold wave of this road can invade to the south of the Yangtze River, but its power gradually weakens; The cold wave of the East Road extends from northeast Siberia to the south, and invades the southeast coastal area of China after passing through the northeast of China. The cold wave of the middle road originated in the polar regions and Siberia, invaded China through Mongolia, and generally went east to the sea through the Loess Plateau and the Yangtze River Basin, but when the power was strong, it could invade Liangguang and even Hainan Island in the south.

This road cold wave is not only the coldest source and close to our country, but also mostly plain areas when passing through the mainland of our country, with low temperature and fast speed, very violent, so it has the greatest impact on our country.

4. Why is it said that in the cold winter, if the weather is unusually warm and there is a southerly wind, it is a sign of a cold spell?

The cold wave weather process is essentially a weather process in which a cold front transits. We know that the cold front is the cold air mass that plays a leading role, pushing the front to move towards the side of the warm air mass, therefore, before the arrival of a cold wave in a certain place, it is first occupied by the warm air mass, and there is a low pressure as its guide, so when the cold wave front approaches, the first thing that blows is not a strong northwest wind, but a weak south wind or southwest wind. Therefore, in the cold winter, if the weather is unusually warm and there is a southerly wind, it is a sign of a cold spell.

Cold wave refers to the cold air from Mongolia and Siberia to the area through which the weather cools down more than 10 degrees Celsius in a day, often occurs in winter and spring, and the cold wave can affect South China in China, and the losses are also very serious, especially the cold wave disaster in spring is more serious.

As far as I know, some new buildings in some parts of the south are now starting to use heating, but in my opinion, it is a waste of resources. I think those developers are installing heating in the south just to drive up housing prices. Why, because I don't think there's any need to install heating in the south.

Heating in the north is because of the climate, the weather is too cold, minus thirty or forty degrees

Not installing a heater will definitely freeze you into a cold dog. Moreover, the winter in the north lasts for a long time, and almost the whole winter is covered by universities, and even if there is no heating, other heating facilities are needed. For example, in rural areas, people live on fireworks.

In addition, some southern areas only appear to be particularly cold every year when the cold wave hits, and in order to survive the cold for those few days, a heating system is installed, which not only takes up space, but also wastes manpower for maintenance, which really outweighs the loss. It's not as good as an air conditioner. If there was no cold spell that year, it would be a warm winter, and there would be no need for heating.

So to sum up, I don't think there is a need for heating in the south.

Is it okay to do this?

Introduce yourself and let others write it for you, how do people know what you are like?

Hmmm( The pressure won't be so great in the future, everything will be fine.

There are many classic scenes in Jin Yong's "Dragon Babu", and there is a very impressive scene among them, that is, the Zhenlong chess game that Wuyazi posed that many people are afraid of. This chess game stumped many people, and even masters like Duan Yanqing and Murong Fu were addicted to it, almost unable to get out, and almost committed suicide. But who would have thought that in the end, it was broken by a small monk Xuzhu.

The ignorant is fearless, he can't play chess, so he doesn't care about the consequences.

But it also gave the other party a fatal blow. In this way, Xuzhu broke the Zhenlong chess game without cliffs, and Wuyazi also taught Xuzhu the martial arts he had practiced for many years to Xuzhu in accordance with the regulations, and Xuzhu began to become stronger. In this chess game, someone raised such a question, that is, why Qiao Feng, who was famous, didn't want to participate in this chess game, not wanting to crack him.

If Wu Yazi didn't invite Qiao Feng, this would definitely be impossible, because Murong Fu, who had a very bad reputation, couldn't have been invited, Qiao Feng couldn't have been invited, I knew that Qiao Feng was called "North Qiao Feng" back then, so this conjecture is not valid.

And when Wu Yazi taught Xu Zhu martial arts, he asked Xu Zhu a few questions, and asked him who was here to break the game today, and also specifically mentioned Qiao Feng, so it was impossible for Wu Yazi not to invite Qiao Feng. So the question is, why is Qiao Feng reluctant to go? It can't be to look down on anyone, and it can't be to be afraid, so what is the reason?

There are three reasons for this:

First, Qiao Feng thinks that playing chess for fun is not worth putting on the agenda. He has great ambitions in his heart, he thinks about the happiness of the people of the whole country, and he will not take chess in his eyes, and he doesn't like such literary and artistic activities as chess, he still likes activities like wine fighting. Second, there is a great possibility that Qiao Feng will not be able to play chess.

Because Jin Yong only mentioned that he drank a lot of alcohol in the whole **, but he didn't say that he could play chess at any time. It can be seen that the idea that he can't play chess may be valid.

There is also a guess that Qiao Feng travels everywhere, and no one can find Qiao Feng. This is also untenable, because even if Qiao Feng was not the leader of the beggar gang at that time, those apprentices of Su Xinghe were not vegetarians, so they naturally had the ability to find Qiao Feng. Therefore, there is only one possibility, that is, Qiao Feng received an invitation to the chess game, but he didn't want to go.

The third reason is that Qiao Feng is not very good-looking, and this reason is also the most important reason. Duan Yu once commented on Qiao Feng, saying that he was tall, with a Chinese face, thick eyebrows, and a typical northerner. He may think that his appearance is not very good-looking, and he is not as handsome as the Jiangnan people.

He doesn't look good-looking. The Easy Party has one requirement for his head to be handsome. So this point does not meet the requirements Qiao Feng, so naturally he won't join in the fun.

Wu Yazi thought that only Qiao Feng could crack this game at the moment, but he didn't expect that there was another master, and he was very surprised.

This is because Wu Yazi thinks that only Qiao Feng can break the game, so he asks Qiao Feng if he is here.

Wu Yazi wanted to pass on his internal strength to Qiao Feng, but the old man grabbed Qiao Feng's wrist and looked him up and down carefully.

Wu Yazi felt that only Qiao Feng could break his chess game, so he asked Qiao Feng if he was here.

Because Qiao Feng is very important to Wu Yazi, he will ask him.

Because Wu Yazi felt that only Qiao Feng could break his chess game, he would ask like this.

Because he felt that only Qiao Feng could do such a thing, he asked Qiao Feng if he was here.

Because Qiao Feng could come to save him, he came to ask at this time.

In the third chapter of the law, he lied and copied it once, so that he realized the disadvantages of lying and hail, accompanied him to watch educational dry chain sail cartoons, and if it was not good to lie, there must be a substantial small punishment, otherwise he didn't think there was anything wrong with lying, and he wouldn't have changed the town.

How to distinguish the authenticity of the renminbi? Preparation one.

Brother is also looking for it, but I can't find it, and I'm going to pay it at night, LZ, we're really tragic.