How long is the longest day in the Arctic? How long is the polar day in the Arctic Circle

The day of the Antarctic is in the winter of our country, the day of the North Pole is the summer of our country, and when our country is in the summer, the earth is at aphelion, on the contrary, in the winter, the earth is at the perihelion. According to the principle that the area swept by the planets connected to the Sun should be equal at the same time, it can be seen that at aphelion, the Earth revolves slower, and at perihelion, it travels faster, so that the day hours at the South Pole are shorter than those at the North Pole. In the area north of the Tropic of Cancer in China, the longest day season is summer.

Because due to the influence of the Earth's revolution, the direct point of the sun on the Earth moves every day. The spring and autumn equinoxes shoot directly at the equator, the summer solstice goes straight to the Tropic of Capricorn, and winter.

To the Tropic of Capricorn, the Arctic region appears when the direct point of the Sun is at the Tropic of Cancer (i.e., the Sun is directly hitting the Tropic of Cancer at the time of the summer solstice).

Polar day (i.e., day and night in the Arctic for half a year from the day of the summer solstice). So our country (or the whole planet is also available.

In areas north of the Tropic of Capricorn, the longest day season is summer. Mohe Because it is a polar day in the Arctic Circle on the summer solstice, the closer you are to the Arctic Circle, the longer the daylight hours. The Mohe River has a high latitude and is close to the Arctic Circle, so the Mohe River has long days.

The summer solstice day in Mohe is 16 hours and 30 minutes long, while Beijing is only 15 hours and 1 minute.

Geography has learned that there are 24 hours, when the direct point of the sun is in the Tropic of Cancer or Tropic of Cancer, there will be a 24-hour day and a 24-hour night at the South Pole or North Pole, which is the polar day and polar night.

24 hours, June 22, the day of the summer solstice. It should be a surface runoff handle.

Arctic Circle polar daylight time refers to the period of continuous 24 hours of sunshine in the Arctic Circle, also known as "white night". In the Arctic Circle, the prolonged polar day phenomenon is caused by the relative position of the Earth to the Sun. The Arctic Circle polar day time is not fixed, but changes with the seasons.

During the summer months of the Arctic Circle (mid-June to late July), the entire Arctic Circle is in a polar daylight state, which can range from a few weeks to several months, depending on the latitude. Within the Arctic Circle, the northernmost location is Svalbard, and its polar day time is about April 20 to August 23, about 125 days; The closest to the Antarctic Circle is the Finnish Highlands, which has a polar day from mid-May to late July, which is about two months. In the northernmost cities in the Arctic Circle, such as Tromsø in Norway and Kiruna in Sweden, the polar day time is about two months between mid-May and late July.

It is worth noting that due to the geographical location and environmental conditions of Zhengxun hidden in the Arctic Circle, the polar day is not as bright as daylight all day. Although it is not completely dark at night in the Arctic Circle, it can also be affected by location, weather and natural conditions. Because of this, although the polar day time in the Arctic Circle is a relatively fixed concept, it will still be different in the actual situation.

Overall, the polar day time in the Arctic Circle is a rather special and interesting phenomenon. It not only affects the activities and behaviors of organisms in the Arctic Circle, but also becomes one of the main reasons why many people travel to the Arctic Circle. <>

1.Daytime: Daytime. Day, that is, day.

2.Daylight occurs anywhere on Earth when exposed to the sun.

3.Where are you, like in China, you will encounter daylight almost every day! In addition to encountering severe sandstorms.

Or very cloudy weather, and a total solar eclipse.

, there is a temporary "dark day" (it should be daytime, but for some reason it is dark), and normally there is daylight every day.

4..There will be daylight in the North Pole and nearby areas of the Northern Hemisphere for more than 100 days before and after the summer solstice, and in the South Pole and nearby areas of the Southern Hemisphere for more than 100 days before and after the winter solstice. This is called "polar day".

5.Polar day: It is the Earth's North and South Pole Circle.

The phenomenon that the sun never sets all day long is called "polar day". (Conversely, if the sun is not seen all day, it is the polar night).

6.Because of the rotation of the earth.

The axis is skewed, and the position of the sun directly on the ground changes regularly with the annual motion around the sun. When the apparent motion of the Sun is north of the celestial equator, that is, when the declination of the Sun is positive ( ), the Sun mainly shines on the Northern Hemisphere, and the Arctic Circle will appear "Polar Day". And in the Antarctic Circle, there will be a "polar night."".

If the apparent motion position of the Sun is south of the celestial equator, that is, when the sun's declination is ( ), then the Antarctic Circle is a polar day.

Arctic daylight means 24 hours a day, all day, no night.

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.

The Arctic has long nights and nightless days. It's not like we have it here, it's scheduled in 24 hours, it's almost a whole year. That is, near the North Pole, there is a continuous daylight for half a year, and at this time, the dim sunlight does not leave the Arctic Ocean.

surface, is a daytime with little change; And from September onwards, I didn't see the sun for half a year, and it was a long night. Only the brilliant aurora dazzles the figure of the explorer. It resembles fire, curtains, paintings, searchlights, 、......Colorful and varied, it arouses people's various reveries.

In addition, there are parhelic suns and mirages. It has been studied that these are charged particles in the air in the solar wind.

The effect of collisions with each other caused by "high-altitude lightning" or refraction phenomena.

The South Pole is half a year long and half a year and half a night.

As the Earth rotates, it also revolves around the Sun. The Earth's rotation from west to east around the Earth's axis is called rotation, and the Earth's rotation is one day and night, with 24 hours. The movement of the earth around the sun is called revolution, the earth.

One revolution is one year. An important feature of the Earth's revolution is that the orbital plane of the Earth's revolution is always at an angle to the Earth's axis, and the North Pole always points near the North Star. Because of this.

An important feature is that in the process of the Earth's revolution around the Sun, the Sun sometimes shines directly in the Northern Hemisphere, sometimes in the Southern Hemisphere, and sometimes directly on the equator. Throughout the year, the direct point of the sun is always.

Moves back and forth between northern and southern latitudes.

Every year around March 21, the direct point of the sun is at the equator, and the North Pole sun does not set throughout the day. It is spent 24 hours a day during the day. This is the polar day.

Later, as the direct point of the sun moved northward, the range of the Arctic polar day gradually expanded, and by the summer solstice in the Northern Hemisphere, the polar day expanded to the Arctic Circle. After that, the direct point of the sun no longer moved north, but began to move south, and the polar day range of the North Pole began to gradually shrink, and the daylight time of the North Pole was not finished until around September 23, when the sun passed the equator directly. During this time, the closer you get to the North Pole, the more days the polar day lasts, reaching 191 days.

During this period, there is no night in the Arctic, it is all day, that is, half the day.

After the autumnal equinox in the Northern Hemisphere, the sun shines directly in the southern hemisphere, and the sun does not rise in the North Pole. Spend 24 hours a day in the dark, and this is the polar night. Until the northern hemisphere equinox the following year, the Arctic is spent in long nights. The closer you get to the North Pole, the more days the polar night lasts. The number of polar night days that lasted in the Arctic was 174. During this period, the Arctic was dark for half a year.

The situation at the South Pole is the opposite of the North Pole, except that the number of days and nights is different from the North Pole. Therefore, we say that the north and south poles are a big day and night in a year, half a year of day and half a year of night.