Why atmospheric circulation causes changes in the Earth s rotation rate

Atmospheric circulation is an important mechanism to complete the transport and equilibrium of angular momentum, heat and moisture in the Earth-atmosphere system, as well as the mutual conversion of various energies, and is also an important result of the transport, balance and conversion of these physical quantities. Wind is a natural phenomenon caused by the movement of air, it is caused by the heat of solar radiation, and the horizontal movement of air is called wind.

In the 50s of the 20th century, the analysis of astronomical time measurement found that the earth's rotation speed has seasonal cyclical changes, slower in spring and faster in autumn, in addition to semi-annual cycle changes. The amplitude of the annual variation is about 20 25 milliseconds and is mainly caused by seasonal changes in the wind. And the reasons for the formation of atmospheric circulation:

One is solar radiation, which is the energy of atmospheric movement on the earth, due to the rotation and revolution of the earth, the surface of the earth receives solar radiation energy is uneven. There are many tropical regions and few polar regions, thus forming a thermal circulation of the atmosphere. The second is the rotation of the earth, and the atmosphere moving on the earth's surface will be deflected by the geostrophic deflection force.

Third, the distribution of sea and land on the earth's surface is uneven. Fourth, the exchange of heat and momentum between the north and south of the atmosphere is the same. All these factors constitute the average state and complex and variable shape of the Earth's atmospheric circulation.

This correspondingly has an impact on the Earth's rotation rate.

causedThe speed of the Earth's rotationReasons for the acceleration: In addition to the slowing trend on very long time scales, in the twenties of the 19th century, it was discovered that there are short-term irregular changes in the rotation of the earth, sometimes fast and sometimes slow, and the variation in the length of days in a year can reach 2 milliseconds.

The reason for this change is currently inconclusive and may come from the mantle.

Factors such as angular momentum exchange with the Earth's core or sea level changes, as well as factors such as solar wind moment or coupling with the geomagnetic field.

The law of rotationPole shift. The movement of the Earth's axis on the ground is called pole shift.

There are two main reasons for pole shift, one is the result of the deviation of the Earth's axis from the axis of inertia, with a period of about 14 months. The other is caused by the seasonal operation of the atmosphere, which has a period of one year. There are some other secondary reasons for the amplitude of the pole shift.

Generally no more than 15 meters.

As a result of the pole shift, the latitude and longitude of the Earth change.

Precession. Tianji.

The change in position on the celestial sphere is called precession.

What will be the impact of the Earth's accelerated rotation on humans? I'm scared after reading it for a while!

If the Earth's rotation is in the opposite direction, what happens to the horizontal circulation in the upper oceans?

Hello dear, if the direction of rotation of the earth is opposite, the horizontal circulation in the upper layers of the ocean will change significantly. As a result of changes in the direction of the Earth's rotation, the flow direction of the horizontal circulation in the upper oceans will also change, affecting the temperature and humidity of the oceans, as well as the stability of marine ecosystems. In addition, changes in the horizontal circulation in the upper oceans can also affect the global climate, leading to global warming or cooling.

The atmosphere is only one of the determining factors in the bridge noise.

The earth's autobiography is slow, and the days and nights are longer.

That is, the air is heated by the sun during the day, which leads to an increase in degrees of temperature during the day.

Conversely, the night is the same, and the temperature will drop a little more.

This leads to an increase in the temperature difference between day and night.

It can't be, and even if there are changes, it's small

Currently, the Earth's rotation period is 23 hours and 56 m minutes and seconds. Scientists found from the information on paleontological fossils that in the Cambrian period, 500 million years ago, the rotation period of the earth was 21 hours; In other words, the day was 3 hours shorter than it is now. Today, scientists have used elaborate instruments to prove that the Earth's autobiographical speed is slowing down, and the current slowdown is two-thousandths of a second after each century.

This is equivalent to a 1-hour slowdown in rotation every 100 million years. As for the reasons for the slowdown of the Earth's rotation, the tidal effect of the Moon on the Earth is the main reason for the slowdown of the Earth's rotation.

The Earth rotates on its axis and revolves around the Sun. In all these natural phenomena, it was, is, and will continue to be! So why is the Earth slower?

What if you had a spinning top in your hand and let it spin in a completely frictionless environment? According to Newton's theorem, inertia causes the gyroscope to spin constantly! Or the conservation of angular momentum, will insist on the infinite rotation of the top!

This is also why the celestial bodies and galaxies in the universe are constantly in a state of rotation, and some companions will ask? So where does the power of the initial rotation of the galaxy come from? It is gravity that gives the nebula and all celestial bodies the initial rotational momentum.

The day consists of 24 hours, 24 hours and 60 minutes, and 60 minutes and 60 seconds, for a total of 86,400 seconds in a day. However, if the Earth's rotation is slowing down, this means that in the future, we will need more time to calculate the time of the day, whereas in the past, we would need less time. Every century a day becomes milliseconds, which illustrates that the Earth was less than 22 hours a day 100 million years ago!

While this may not seem like a big deal, these changes add up over billions of years.

If you go back in time to when the Earth was originally formed, you will find that a day is only 23,000 seconds, or six and a half hours! In another 4 million years or so, we will have no need for leap years at all! Thus, while the laws of physics are solid, the interaction between the Earth and the Moon is enough to change the tides, days, and even years over time.

It is precisely because of the gravitational pull of the sun and the moon that the earth gradually slows down its rotation over a long period of time. In the early days of the Earth's existence, its rotation speed may be only a few hours, but in hundreds of millions of years, the Earth's day may be more than 30 hours, and there will be only more than 200 days left in the year. Not only that, but after a long enough span of time, there is a good chance that the Earth will be tidally locked like the Moon.

At that time, the earth will completely stop rotating, and people in the sunshine and dark night areas will no longer observe the sunrise and sunset, but will only feel two completely different states: extreme cold and extreme heat.

This means that if the earth is scarred and overwhelmed, and one day it will stop turning, then humanity will perish and people will have to take more care of the environment.

This means that many, many years from now humans may not be able to survive on Earth because the temperature on the Earth's surface will change.

The earth is inherently rotating. Biologists theorize that the Earth and the other seven stars in the solar system all come from a rotating cloud of gas and dust about 4.6 billion light-years ago, and the particles in the cloud rotate and stick to each other, eventually producing a large star.

Today's planets revolve around the sun in the same direction as the original clouds, the planets are stars and moons, and the rocky stars left in the middle of the stars revolve around the sun and are constantly rotating, and some very large planets must be 58 hours to rotate once. Our Earth rotates in about 24 hours. As a result, an American scientist, Sbury Harmant, calculated that the rotation rate at the Earth's equator is about 1,670 kilometers per hour.

The earth rotates from west to east, so each country has set the sending address of communication satellites around the equator, such as California in the United States, and sent them all the way to the east, so that the communication satellites have an acceleration of 1670 kilometers and hours before they are sent. The question is, why doesn't the rate of rotation on Earth accelerate without slowing down?

In fact, the Earth's rotation rate is changing, and in the early days of the Earth's formation, it rotated much faster than it does today. Scientists estimate that the Earth's rotation around the equator used to be about 6,400 kilometres per hour, or just six hours a day. If there had been people on Earth at that time, they might have seen the sun set three hours after the sun had risen, and then the moon would have been much closer to Earth than it is today at night for only three hours.

For 100 million years, the moon has been getting farther and farther away. The effect of the Moon's law of gravitation has established a long-term condition on the Earth's seas. Changes in the sea slow down the rotation of the Earth, and according to statistics, every 100 years, the time period of the day is extended by one or two minutes.