How much does the altitude rise 1000m temperature drop?

The air near the ground is heated more, and the air far from the ground is heated less. Every time the height rises 1000m, the temperature drops by about 6.5℃, which is called the vertical temperature drop rate.

We know from geography class that there is an atmosphere around the earth, and that is the atmosphere. Then, if we raise the altitude by 1000m, how much will the temperature drop?

From the ground, the earth's atmosphere can be divided into troposphere, stratosphere, mesosphere and thermosphere. Between the troposphere and the stratosphere, there is a transitional layer called the tropopause. With different latitudes and seasons, the height of the tropopause from the ground is generally between 8 km and 16 km.

Troposphere is the atmosphere closest to the earth's surface, which concentrates about 75% of the atmospheric mass and more than 90% of the water vapor mass. The troposphere is called troposphere because it is influenced by different landforms such as forests, lakes, grasslands, beaches and mountains. And the temperature change caused by sunlight, which causes vertical and horizontal winds, that is, a large number of convection phenomena occur in the air.

Its lower limit is connected with the ground, and its upper limit height varies with geographical latitude and season, and its height varies with latitude. The average height in low latitudes is 17 ~ 18km, in mid latitudes it is 10 ~ 12km, and in polar regions it is 8 ~ 9km. For example, in Beijing, China, the troposphere height is about 1 1 km, while in Guangzhou, the troposphere height increases to about 16 km, and decreases to 10 km in the northeast of China. And summer is higher than winter. Even on the same day in the same area, the height of the troposphere will change with the changes in the morning, middle and evening.

The troposphere extends from the earth's surface to the top of the troposphere, the beginning of the stratosphere. At high latitudes, the friction of the surface will affect the airflow, forming a planetary boundary layer with an average thickness of 2 kilometers. The formation of this layer mainly depends on the topography, and it will also be separated from the rest of the troposphere by the countercurrent layer.

As the lowest layer of the atmosphere, this layer has the highest density, which contains almost 75% of the total air mass. In the troposphere, air can flow up and down, and weather phenomena such as thunderstorms, dense fog and wind shear all occur in this layer. Because the troposphere is the most turbulent layer in the atmosphere, most jet passenger planes will fly over the top of this layer (that is, the tropopause) to avoid the airflow that affects flight safety.