How long are the polar day and night phenomena that occur in both the Antarctic and the North Pole?

Murmansk.

The place to see the aurora in Russia is the overall perception of Murmansk by many people. Today, let's take an in-depth look at this fascinating city and see how the locals live in extreme nights and nights, knowing to be admiring the beautiful Northern Lights.

What to look out for

Murmansk is an ice-free port, the capital of Murmansk, Russia, and the Arctic Ocean.

The largest port city along the coast. It is located in the northeastern part of the Kola Peninsula, facing the Barents Sea.

of Kola Bay. Due to the influence of the North Atlantic Current, although it is located at 69 degrees north latitude, it does not freeze all year round.

Polar day and polar night.

This Russian city, located in the far north, has 40 days of polar night and 60 days of polar day.

In the far north of Russia, the year is divided into polar nights and polar days. In extreme daytime, the sun hangs in the sky all day long and does not disappear into the horizon.

Hereinafter. In general, apartments and hotels are equipped with thick curtains so that sunlight does not interfere with people's rest. Locals say:

I remember when I was a kid, my mom would use a blanket to cover the windows because regular curtains didn't work. The kids would wake up at 2am, but it was hard to explain to them that it was still early. ”

Locals say that during extreme daylight hours, electricity consumption in the home is almost zero. But the electricity savings in the summer are spent on the polar night.

Fall. One evening after attending the party, locals who had a little drink would ask passers-by what time it was. It doesn't matter if it's 11 a.m. or 11 p.m., they're not sure.

Doctors believe that due to the lack of ultraviolet rays.

and vitamins, the polar night can interfere with the normal functioning of the body. Many northerners feel depressed and sleepy at this time of year.

At the end of the night, there will be two celebrations here. The first celebration is called "The First Ray of Sunshine" – Murmansk residents will head to the top of the mountain to welcome the first sunrise in 40 days.

The aurora is a magical natural astronomical phenomenon, with no fixed pattern and different colors (the most common in Russia is green), elegant, mysterious, and unavoidable.

The aurora is not what you want to see, you can see it if you want! If you want to gather the elements of cold and sunny days and "Aurora is in a good mood and want to show you", you can summon one or several mysterious Northern Lights.

It usually lasts 12 hours. In the Antarctic and Arctic, the polar day and night phenomenon generally lasts for 12 hours.

The South Pole and the North Pole are a big concept, if you refer to the circle of 90° latitude, then the polar day and polar night of the North and South Poles are half a year, and the lower the latitude in other regions, the shorter the polar day and night time.

The polar day and night phenomenon in the Antarctic and the North Pole generally lasts for more than 40 days, and during this time, people's concept of time no longer exists.

Polar day and night occur in the northernmost and southernmost places, and it occurs after the winter solstice, generally lasting 24 hours.

Polar day only occurs in the Antarctic Circle and the Arctic Circle, and when there is a polar day at the South Pole, there is a polar night at the North Pole, and vice versa. Because the rotation of the earth is tilted, in summer and winter, when the earth rotates, the north pole is towards the sun, and no matter how the earth turns, it is always towards the sun, so there is a polar day, and vice versa. The Antarctic Circle and the Arctic Circle are opposites, so when there is a polar day in the North Pole, there is a polar day in the South Pole, and vice versa.

Polar day and polar night only occur in summer and winter.

Principle The so-called polar day means that the sun never sets and the sky is always bright, which is also called white night; The so-called polar night is the opposite of the polar day, the sun never comes out, and the sky is always dark. In the high latitudes of Antarctica, there is no "sunrise and sunset" rhythm of life, and there is no 24-hour day and night cycle. The alternation of day and night changes with increasing latitude, and the higher the latitude, the longer the polar day and the polar night.

At 90° south latitude, that is, at the South Pole, the alternation of day and night alternates for half a year, that is, the alternation of day and night there is a full year, half of the year is continuous day, half of the year is continuous night, and one day there is equivalent to a year on other continents. If you leave the South Pole, the lower the latitude, the more day or night it is, and the time of the polar day and night will gradually shorten. At 80°S, there are times when the polar day and night are other than the polar day and night, and there is a day-night cycle of 1 day and 24 hours.

If you are at the end of the polar day, the night is very short at first, and then the night is getting longer and longer, until finally it is all night, and the polar night begins. In the Antarctic Circle (66°33'S), there is only one full day (24 hours) of the year that is all day and one full day is all night. China's Antarctic Great Wall Station (62°13'S) is just outside the Antarctic Circle, and at one or two o'clock in the middle of the night in December, the sky is still cloudy and you can read and write with good eyesight.

This natural phenomenon of polar day and polar night also occurs at the North Pole, the other pole of the earth, but it occurs at the opposite time of the South Pole, and if the North Pole is in the polar day, the South Pole will be the polar night, and vice versa. The formation of the polar day and the polar night is caused by the rotation of the earth around its own inclined axis as it orbits the sun in an elliptical orbit. It turns out that when the earth rotates, the earth's axis and its perpendicular line form an approximate inclination angle, so when the earth rotates, there is always one of the poles facing the sun for 6 months, and it is all daytime; The other pole is turned away from the sun, and it is all night.

The North and South Poles are amazing natural phenomena that no other continent has.

Polar day and polar night are unique natural phenomena in the Polar Circle, and the special natural phenomena of polar day and polar night are the result of the rotation of the earth along the inclined axis of the earth. That is to say, when the earth rotates, the earth's axis is inclined to the perpendicular line at an angle of about degrees, so that the earth is in orbit around the sun for 6 months, and one of the poles of the south pole and the north pole is always facing away from the sun; If the South Pole is facing the Sun, the sunlight shines strongly, so the South Pole is all day and no night for half a year; At this time, the North Pole does not see the sun, and the North Pole is all night for half a year, and there is no day. In the next half year, it is the opposite, the North Pole is facing the Sun, and the North Pole is all daytime; At the South Pole, the sun is not visible, and the South Pole is all night.

In areas within the Polar Circle, the length of the polar day and polar night varies depending on the latitude.

Polar day: In Antarctica, the phenomenon in which the sun never subsides into the horizon within 24 hours of local time is called polar day. At the South Pole, half of the year is the polar day; If refraction is taken into account, it should be a little more than half a year. The polar day at the South Pole occurs in the second half of the Southern Hemisphere.

Polar Night: In contrast to the polar day, in the Antarctic region, the phenomenon that the sun is always below the horizon for 24 hours local time is called polar night. At the South Pole, half of the year should be the polar night; If refraction is considered, it should be less than half a year.

The polar night at the South Pole occurs at the exact opposite of the polar day, during the winter in the Southern Hemisphere.

When the Earth revolves around the Sun, the direct point of the Sun moves in the Tropic of Cancer of the Earth.

Summer solstice: The sun shines directly on the Tropic of Capricorn, polar day in the Arctic Circle, polar night in the Antarctic Circle.

Winter solstice: The sun shines directly on the Tropic of Capricorn, the polar day in the Antarctic Circle, and the polar night in the Arctic Circle.

Spring and Autumn Equinox: The sun shines directly on the equator, and the global day and night are equinoxed.

Therefore, under theoretical conditions, the north and south poles cannot have polar day or polar night at the same time.

If the North Pole is the polar night, the South Pole is the polar day, or vice versa. One yin and one yang is the Tao.

It depends on which line of latitude it is. Depending on the latitude value, the duration of the polar day and the polar night is also different.

Due to the inclination of the Earth's axis, the Earth is located at different positions in its orbit and the angle of direct sunlight is also different. On the equinox, the sun shines directly on the equator, and there is no polar day and night at the north and south poles. From the second day of the vernal equinox, the direct point of the sun moves north, and the polar day phenomenon begins at the North Pole and the polar night phenomenon begins at the South Pole.

As the direct sunlight continues to move northward, the range of polar day in the Arctic region is increasing, and the range of polar night in the Antarctic source search area is also increasing. By the summer solstice, the direct point of the sun is at the Tropic of Capricorn, and the Arctic region has the largest range of polar daylight, reaching the latitude line of the Arctic Circle. The extent of the occurrence of polar nights in the Antarctic region is also maximum, reaching the latitude line of the Antarctic Circle.

After that, the direct point of the sun shifted southward, and the extent of the polar day in the Arctic began to shrink, and the extent of the polar night in the Antarctic region also began to decrease. On the day of the autumnal equinox, the sun shines directly at the equator again, and the polar day and night phenomena at the poles disappear.

Therefore, if it is on the north and south poles, the time of the polar day and night is half a year. If it is a fissimile in the Arctic and Antarctic Circles, the time of the polar day and the night is one day each.