Why the troposphere thickness of the Earth s atmosphere is not uniform

The thickness of the troposphere of the Earth's atmosphere is not uniform, and generally varies mainly with latitude and seasons for the following reasons:

1. The average of low-latitude areas is 16 18 km; The average in the mid-latitudes is 10 12 km; The average at high latitudes is 8 9 km. This is because the low latitudes have long sunshine hours and strong ground radiation, so the convection is strong, and the troposphere is relatively thick. Since the sunshine from the equator to the poles (low latitudes to high latitudes) decreases, the ground absorbs less solar radiation, so the ground radiation decreases, so the troposphere basically shows a law of gradual thinning from low latitudes to high latitudes.

2. As far as the season is concerned, the troposphere is generally thick in summer and thin in winter. This is because the temperature near the surface is low in winter, and the water vapor in the troposphere is more likely to descend to the surface (forming frost or fog), resulting in weakened convection and smaller tropospheric thickness. In summer, convection is strong and the troposphere becomes thicker.

3. Due to the low temperature in the plateau area, the troposphere is thinner than that in the same latitude.

The troposphere is a layer of the Earth's atmosphere close to the ground. It is also the densest layer of the Earth's atmosphere, containing about 75% of the mass of the entire atmosphere, as well as almost all of the water vapor and aerosols.

The reasons are: First, it is affected by the gravitational pull of the earth. Second, the influence of thermal properties.

Gravitational pull, the direct rays of the sun produce more heat.

Is there a steady state of a fluid in motion?

Surely not!

The troposphere and stratosphere are different in height, with the troposphere generally at 0 12 km and the stratosphere at more than 12 km. In addition, the composition of the troposphere and stratosphere is different, with the troposphere being rich in water vapor and the stratosphere being thin in air.

The troposphere is approximately within 0 to 7-12 km. The air is convective up and down violently, and the wind direction and speed change frequently. 80% of the water vapour in the atmosphere is present in this layer, so the temperature of this layer decreases with altitude in the area where clouds and rain occur most often. The stratosphere is around 7-12 km to 50-65 km.

First of all, the troposphere is generally between 7 and 12 kilometers, and a lot of water vapor is in this place, and this place is generally easy to look like a circle or rain; Then the flow is generally between 12 km and 65 km, and then it is distributed in the equator as well as in the polar regions.

The wind direction is different, the wind speed is different, the moisture content is different, the temperature is different, the distance from the ground is different, the height is different, and the difference is still very large.

Introduction: If we have studied geography, we all know the atmosphere.

There are a lot of stratifications in and there will be some stratosphere in the atmosphere.

<> we will find that the Earth will have some gas spheres on the highest surface, and that it has a gravitational pull outside of the Earth.

At this time, it will have a layer of gas mixture outside, so it is deeply surrounded by these, surrounded by the deep sea, surrounded by land. First of all, we can see that there will be some gases above the ground, there will be some nitrogen, oxygen, oxygen and carbon dioxide.

First of all, let's talk about the troposphere, the troposphere is the least layer in the air, because the amount of the atmosphere in the earth is constantly widening until it widens to the troposphere, and the stratosphere is their starting and ending point. And the troposphere is about 12 kilometers thick.

We will know that there will be some relatively small gas in this troposphere, which can digest and absorb the short-wave radiation of the sun, and the air convection is also relatively strong, and the gas in it can move horizontally. Moreover, there will be many factors in the temperature and humidity of the environment, and the ground contact with the air and some human activities will play a role.

Moreover, the chemical processes inside are relatively active, there will be some warming, and there will also be a natural phenomenon such as rain, snow, frost, clouds and fog.

The stratosphere, on the other hand, should be about 10 50 kilometers above the ground, and its stratosphere is stratosphere.

There is a situation where the top is hot and the bottom is cold, and they have different temperatures in different temperature layers. So we can find that the troposphere of the stratosphere increases with the increase of temperature and decreases with the decrease of temperature, so the stratosphere is characterized by the increase of temperature with the increase of altitude.

The distance from the ground is different: the troposphere is closest to the ground, while the stratosphere is farther from the ground;

The direction of atmospheric movement is different: the troposphere is mainly vertical, while the stratosphere is mainly horizontal;

Temperature changes are different: the troposphere decreases with altitude, while the stratosphere rises with altitude.

The atmosphere is composed of three layers, which are the troposphere, the stratosphere, and the upper atmosphere. We live in the troposphere. The stratosphere is about 11 12 kilometers away.

1. Tropospheric characteristics: the air temperature decreases with the increase of altitude, the air convection movement is significant, and the weather phenomenon is complex and changeable. It concentrates three-quarters of the atmospheric mass and almost all of the water vapor and impurities, and the thickness varies with latitude.

The thickness of the low latitudes is about 17 18 km; thickness of about 10 12 km in mid-latitude; Cushman & Wakefield.

The thickness is about 8, 9 km.

2. Stratosphere.

Features: The temperature rises with altitude and absorbs a lot of ultraviolet rays.

The height of the ozone layer is from the tropopause to 50, 55 km.

The troposphere and stratosphere have different forms of atmospheric movement and the reason why there are no weather phenomena in the stratosphere: the mesosphere is the stratosphere, and the air flow is stable. The tropospheric air is convective up and down, and the exchange of heat and cold forms a complex weather.

The troposphere contains a large amount of water vapor, and when the ground air is heated, it becomes a hot air that rises and the cold air in the upper layer falls. Due to the rotation of the earth and the uneven heating of the earth, the air has to move in all directions, thus forming the wind. When water vapor is cold in the sky, it will form various meteorological changes such as rain, dew, thunder and lightning.

Troposphere

It stretches from the Earth's surface to the tropopause, the beginning of the stratosphere. At high latitudes, a planetary boundary layer with an average thickness of 2 km is formed because the friction on the surface affects the air flow. The formation of this layer varies mainly depending on the topography and is separated from the rest of the troposphere by the countertroposphere.

The near-surface atmosphere isTroposphere。The near-surface airflow is the horizontal movement of the atmosphere - the unit of movement of the wind atmosphere is the airflow, which is composed of updraft, updraft, downdraft, and near-surface airflow, of which the near-surface airflow is what we usually call the wind (lateral flow), the updraft generally forms a low-pressure center near the ground, and the downdraft forms a high-pressure center on the ground.

Around our acres of disturbance the earth is a thick layer of atmosphere, the earth's atmosphere.

The thickness can reach about 2000 to 3000 kilometers. Of course, the Earth is not the only planet with an atmosphere, the solar system.

The terrestrial planets in China, such as Venus and Mars, all have atmospheres.

Although Venus, Earth, and Mars all have atmospheres, there is atmospheric pressure.

The difference is enormous, Venus is almost 92 times the Earth's atmospheric pressure, while Mars is less than 1% of the Earth's atmospheric pressure, and the Earth's proper volume and mass form a suitable atmosphere.

The heat of convection comes from the heat of the region, so the higher the colder. The higher the atmosphere, the stronger the convection is because there is no resistance.

The atmosphere can be divided vertically into three layers (more detailed is five), the troposphere, the stratosphere, and the upper atmosphere.

The troposphere is a layer close to the ground, the main characteristics are that most of the air and almost all the water vapor are concentrated, the temperature decreases with the increase of altitude, the vertical convection of the air is obvious, and the weather phenomena are complex and changeable.

Because the surface of the lithosphere and hydrosphere is heated by the sun, and the thermal radiation will heat the air below, the hot and cold air will undergo vertical convection, and because the ground is divided between sea and land, day and night, and the difference between latitude and latitude, the temperature in different regions is also different, which forms the horizontal movement of air.