How does the weather change during extreme days and nights?

Extreme day and night are unique natural phenomena in the polar circle, which are the result of the earth's rotation along the inclined earth axis. That is to say, when the earth rotates, the earth axis forms an inclination angle of about 23.5 degrees with the vertical, so the earth runs in an orbit around the sun for six months, with one pole of the South Pole and the North Pole always facing the sun and the other pole always facing away from the sun; If the South Pole is facing the sun and the sunshine is strong, then within half a year, the South Pole will be full of day and no night; At this time, the North Pole can't see the sun. It is night for half a year, and there is no day. In the next six months, on the contrary, the North Pole is facing the sun, and the North Pole is all daytime; At this time, the South Pole can't see the sun, and it is all night in the South Pole. In the polar circle, the length of the polar day and night varies according to the latitude. Extreme day: In the Antarctic region, the phenomenon that the sun never sinks to the horizon within 24 hours local time is called extreme day. In the Antarctic, it is extremely bright for half a year; If refraction is considered, it should be a little more than half a year. The extreme sunrise in Antarctica occurs in the second half of the southern hemisphere. Extreme night: Contrary to extreme day, in the Antarctic region, the phenomenon that the sun is always below the horizon within 24 hours of local time is called extreme night. In the Antarctic, half a year should be the polar night; If refraction is considered, it should be slightly less than half a year. The Antarctic polar night is just the opposite of the winter polar day in the southern hemisphere. In the Antarctic region, with the decrease of latitude, the time of polar day and night becomes shorter, and in the polar circle, polar day and night only appear for one day. If the direct point of the sun is in which hemisphere, then extreme sunlight will appear near the polar regions of that hemisphere. The range of the polar day is related to the latitude of the direct point of the sun, and the latitude difference between the boundary and the pole is the latitude of the direct point of the sun. Therefore, after the vernal equinox, there will be extreme days near the North Pole, and then the range of extreme days will become larger and larger; It reaches its maximum on the solstice in summer, and the boundary reaches the Arctic Circle. From summer to the future, the extreme daily range near the North Pole is gradually reduced, and it is reduced to zero by the autumn equinox. After the autumnal equinox, extreme days appeared near the South Pole, and then the range of extreme days near the South Pole became larger and larger. It reaches its maximum in the winter solstice, and the boundary reaches the Antarctic circle; From winter to the future, the extreme daily range near the South Pole gradually decreases, and it decreases to zero by the vernal equinox. This cycle is repeated, and its cycle is a tropical year. As we all know, "extreme day" and "extreme night" appear alternately in the north and south poles every year. In a year, six consecutive months are daytime (called extreme daytime) and six months are dark (called extreme night). During the "extreme day", 24 hours a day is daytime. If it is sunny, even at midnight, it is sunny, as bright as broad daylight. When the "polar night" comes, the sun will never rise from the horizon and the stars will always twinkle in the dark sky. Extreme daylight only occurs in the Antarctic circle and the Arctic circle. Extreme day appears in the Antarctic, extreme night appears in the Arctic, and vice versa. Because the earth's rotation is tilted, in summer and winter, when the earth rotates, the north pole faces the sun. No matter how the earth rotates, it always faces the sun, so there is extreme sunlight, and vice versa. The Antarctic circle and the Arctic circle are opposite, so there are extreme days in the Arctic, and there are extreme days in the Antarctic, and vice versa. Extreme day and night only occur in summer and winter. Arctic polar days and Antarctic polar nights appear in summer and Antarctic polar nights appear in winter. Extreme night, also known as eternal night, is the phenomenon that the sun is below the horizon in a day in the polar regions of the earth, that is, the night lasts for more than 24 hours. Both the North Pole and the South Pole can be divided into extreme days and nights. In a year, it is extremely bright for six months in a row, and it is extremely night for six months. During the polar night of one month, you can see the moon for 15 days, but you can't see it for 15 days. The scenery of "Arctic Day" is very wonderful. 24 hours a day is daytime. If it is sunny, even at midnight, it is as bright as broad daylight. On the days of "Arctic Day", the street lamps are turned off all night, and the lighting in front of the car temporarily loses its function. Dark curtains are hung on the windows of every household, which people use to block out the light. However, when the "Arctic Night" came, it was a different scene there. It's a long night, except for a little light at noon, lights should be on during the day! Because in the "Arctic Night", the sun will never reach the horizon, and the stars will always twinkle in the dark sky. For half a month of the year, you can see the full moon or the lack of it spinning in the sky all day. For the other half month, I couldn't even see the moon. This strange sight lasted for half a year in the central Arctic from mid-September to mid-March of the following year. If the direct point of the sun is in which hemisphere, then there will be an extreme night near the polar region of the other hemisphere. The range of the polar day is related to the latitude of the direct point of the sun, and the latitude difference between the boundary and the pole is the latitude of the direct point of the sun. Therefore, after the vernal equinox, there will be an extreme night near the South Pole, and then the scope of the extreme night will become larger and larger; It reaches its maximum in summer solstice, and the boundary reaches the Antarctic circle; From summer to the future, the polar night range near the Antarctic gradually narrows, and it narrows to 0 by the autumn equinox; After the autumnal equinox, the polar night appeared near the North Pole, and then the polar night range near the North Pole became larger and larger. The winter solstice reaches its maximum and the boundary reaches the Arctic Circle. After the winter solstice, the polar night range near the North Pole gradually shrinks to zero at the vernal equinox. This cycle is repeated, and its cycle is a tropical year. Because of the extreme day and night, animals must accumulate enough energy in a long day, so that they can keep eating and raise their offspring efficiently, so that when night comes, except some animals that migrate to the south, those animals that stay behind can spend the most difficult period. The living environment in the Arctic is very monotonous. There is snow all year round here, and there is no obvious seasonal change. People can't see the process of germination, growth, flowering and fruiting of plants. The extreme day and night phenomenon in half a year disturbs people's physiological clock. In extreme daytime, it is difficult for people to sleep during the day, so the indigenous people in the Arctic have the characteristics of less sleep. Winter is long, people's activities are mainly indoor, and people who are often locked in the house will suffer from "indoor heat". After all, modern civilization provides a comfortable and warm life for the residents of the Arctic ―― it's MINUS 30 degrees outside the window, people can swim in the indoor heated swimming pool, play basketball and volleyball in the gym, and children can play video games; With the development of satellite communication technology, residents in the Arctic can safely watch their favorite festivals every night. Helicopters are busy transporting all kinds of supplies and taking you where you want to go. Just as China turned the Great Northern Wilderness into big warehouse in the north, mankind is now committed to turning the barren Arctic into an energy base. Of course, life here is still very hard now, and human beings will try to solve many problems in the years to come. From March 2 1 to September 23, the polar day appeared in the Arctic, the polar night appeared in the Antarctic from September 23 to March 2 1 the following year, the polar day appeared in the Antarctic, the polar night appeared in the Arctic on June 22, the polar day appeared in the Arctic circle, the polar night appeared in the Antarctic circle on February 22, and the polar day appeared in the Arctic circle. Let people have a richer daydream about this mysterious land. The so-called extreme day means that the sun never sets and the sky is always bright. This phenomenon is also called white night. The so-called extreme night is the antonym of extreme day. The sun will never come out and the sky will always be dark. In the high latitudes of Antarctica, there is no life rhythm of "work at sunrise and rest at sunset", and there is no 24-hour alternation of day and night. The time of day and night alternation changes with the increase of latitude. The higher the latitude, the longer the extreme day and night. At 90 degrees south latitude, that is, in the Antarctic, the alternation of day and night is half a year, which means that the alternation of day and night lasts for a whole year, and half a year is a continuous day and half a year is a continuous night. In other continents, one day is equivalent to one year. If you leave the South Pole, the lower the latitude, it will no longer be a half-year day or a half-year night, and the time of extreme day and night will gradually shorten. At 80 south latitude, the alternation of day and night within 24 hours of 1 day only occurs outside the extreme value of day and night. If you are at the end of the extreme day, at first, the night time is very short, then the night time is getting longer and longer, until finally it is all night, and the extreme night begins. In the Antarctic circle (66 33' south latitude), only one whole day (24 hours) is full of day and the whole day is full of night. China Antarctic Great Wall Station (62 S13') is located outside the Antarctic circle. At one or two o'clock in the middle of the night in June+February, 5438, it was still bright, and people with good eyesight could still read and write. This extreme natural phenomenon of day and night also appears at the other pole of the earth, but at the opposite time to the South Pole. If the North Pole is in extreme daylight, the South Pole is in extreme night, and vice versa. The formation of extreme day and night is caused by the earth's rotation around its own oblique axis when it revolves around the sun in an elliptical orbit. It turns out that when the earth rotates, the earth axis forms an inclination angle of about 23.5 with its vertical line, so the earth rotates for six months, and one pole always faces the sun, which is daytime; The other pole is far from the sun, and it is all night. This magical natural phenomenon of the North and South Poles is not found in other continents. Follow-up: Can water vapor be used in extreme sunlight? Will it rain or snow? Answer: Yes, there must be water vapor. Snow is a common occurrence. . That's a two-level area. It is unlikely to rain, because the temperature is low and it usually turns into snow. Question: Oh, can you still see the Chu sun clearly when it snows? Answer: This question depends on the situation. Think about it. If it snows in a special way and you can't see the sun, ask: What is a pinch? Answer: I can see-