How many meters is the troposphere height?

The average height of troposphere is 17-18km in low latitudes, 1-12km in mid latitudes and 8-9km in polar regions, and it is higher in summer than in winter.

the troposphere is located in the lowest layer of the atmosphere, which concentrates about 75% of the atmospheric mass and more than 9% of the water vapor mass. Its lower boundary is connected with the ground, and its upper boundary height varies with geographical latitude and season.

the troposphere of the earth is the layer closest to the earth's surface, which concentrates about 75% of the atmospheric mass and more than 9% of the water vapor mass. The troposphere is influenced by different topography such as forests, lakes, grasslands, beaches and mountains, and the temperature changes caused by sunlight, thus causing vertical and horizontal winds, that is, a large number of convection phenomena occur in the air.

inversion phenomenon

in the troposphere, the temperature decreases with the height, and the troposphere temperature decreases by about .65℃ every 1 meters on average.

The reason why the temperature decreases with the height is that the main heat source of troposphere atmosphere is long-wave radiation on the ground. The higher it is from the ground, the less it is heated, and the lower the temperature is. However, under certain conditions, the temperature in the troposphere will also rise with the increase of height, which is called "inversion phenomenon".

the inversion can be divided into radiation inversion, turbulent inversion, advection inversion, subsidence inversion inversion and frontal inversion. The existence of inversion layer makes the local atmosphere hot and cold, which hinders the development of air convection. A large number of smoke, pollutants and water vapor condensate gather under it, which makes the visibility worse and the air pollution worse.

Especially over cities and industrial and mining areas, dense fog weather is easy to occur due to many condensation nuclei, and some even cause serious air pollution events, such as photochemical smog.