The atmosphere is the atmosphere, which is a layer of mixed gas tightly surrounding the gravity of the earth. It is the uppermost layer of gas on the earth. It surrounds the deep sea and land. The atmosphere is not accurately defined. In the world, there are still relatively thin gases and microscopic particles at a height of 2,000 to 16,000 kilometers above the ground; there are also small amounts of gases underground, in soil and some rock formations, and they can also be considered components of the atmosphere. , the main components of the earth's atmosphere are nitrogen, oxygen, argon, carbon dioxide and a small amount of gases accounting for less than 0.04%, which is the so-called gas.
The troposphere is the smallest layer of air. It gradually widens from the earth's atmosphere to the tropopause, which is the starting and ending point of the stratosphere. The average thickness of this gas is about 12 kilometers, and the thickness is 8 kilometers. It is 8 kilometers in the two-dimensional air on the earth and 17 kilometers in the earth's equatorial air. It is the densest layer in the air. The air About 75% is mass and 90% is water vapor quality. Its end is connected to the road, and its exact height changes with geographical latitude and time of year. Its height varies with the level. It is 17 to 18 kilometers in low latitudes, 10 to 12 kilometers in mid latitudes, and 8 to 9 kilometers in high latitudes. It is higher in summer than in winter.
Its characteristics are (1) the temperature decreases with height: this is because this layer cannot immediately absorb the short-wave radiation of sunlight, but can absorb the long-wave radiation from the reflective surface of the road, making the air Warm the surface from underneath. Therefore, the air close to the road is more likely to be heated, and there is less air away from the road. The temperature will decrease by about 6.5 degrees for every kilometer it rises. (2) Air convection: Since the surface of the lithosphere and hydrosphere is exposed to the sun, radiant heat causes the next layer of gas to produce vertical thermal convection. Because the road surface is divided into seasonal wind and water fields, daytime, night and horizontal, the temperatures in different areas are also Different, resulting in gas level fitness movement. (3) Temperature, humidity and other factors are distributed unevenly in level: the air comes into contact with the ground, and water vapor, floating dust, microorganisms and toxic substances caused by human activities enter the air. Therefore, in addition to cyclones, the earth's atmosphere In addition to horizontal and vertical movements, the chemical process is very active, and the airflow turns cold or warm, producing a series of natural phenomena such as rain, snow, frost, dew, clouds, fog, etc.
The stratosphere is 10 to 50 kilometers away from the ground. Below the exosphere above the troposphere. In the Earth's atmosphere, the stratosphere, also known as the stratosphere, is a layer that is hot at the top and cold at the bottom. This layer is divided into different temperature layers, with the high temperature layer at the top and the ultra-low temperature layer at the bottom. Moreover, its characteristic is that the troposphere, which is located closer to the road surface, is exactly the opposite. The troposphere is colder and hotter. The stratosphere in mid-latitudes is about 10 to 50 kilometers from the ground, and the Arctic stratosphere begins at about 8 kilometers from the ground. Above the troposphere, up to 50 kilometers above the horizontal plane, cyclones mainly move in the horizontal direction, weakening the convection state, which is called the "stratosphere" or "stratosphere". There is basically no water vapor, the sky is clear and cloudless, and the weather does not change much, making it suitable for sailing. At an altitude of 20 to 30 kilometers, oxygen atoms form an atmosphere under direct ultraviolet light. It acts as a natural barrier to protect microorganisms in the environment from attacks by solar ultraviolet rays and high-efficiency energy particles.
So the difference between them is simple. The troposphere increases with height, and the temperature decreases. As the stratosphere rises with height, the temperature rises.