In the troposphere, why does air convection make weather complex and changeable?

To put it simply, the air in the troposphere convection with each other causes the temperature and moisture in the air to change, making the weather complex and changeable.

In fact, humans live at the bottom of the troposphere. This is because the source of heat in the troposphere is radiation from the ground. Therefore, the farther the air is from the ground, the lower the temperature. According to the geographical knowledge we have learned, we can know that for every 1,000 meters of altitude increase, the temperature drops by 6 degrees Celsius.

It is precisely because the air temperature decreases with altitude in the vertical direction that the air flows differently at different altitudes. Therefore, the earth's atmosphere is artificially divided into the troposphere and the stratosphere. , high altitude atmosphere. The troposphere has the greatest impact on people’s lives. Next, I will focus on the characteristics of the troposphere:

It’s cold at high places

In fact, everyone’s most direct feeling about this is When we climb a mountain on a hot day, it is still very hot at the bottom of the mountain, but it feels very cool when we reach the top of the mountain. It seems that the cold at high places was invented by ancient scholars when they were hiking.

It can be said that it is for this reason that the heat from the ground enters the air through evaporation. After the moist air rises, it condenses into small water droplets due to the drop in air temperature. In this way, when the conditions are suitable, rain falls. .

Significant convection characteristics

We also said above that the air in the troposphere is cold at the top and hot at the bottom, so the air will form convection, which is also the main reason for the formation of rain and snow. The ground, which is the source of tropospheric heat, radiates heat differently due to different latitudes. In this way, convection is strong near the equator, and the tropospheric height is correspondingly much higher. Even in the same area, the intensity of convection is higher in summer than in winter.

It can be said that it is precisely because of these characteristics of the troposphere that high-temperature water vapor and impurities near the ground are transported to the upper low-temperature space through the convective movement of the troposphere, so that the moist air increases with the temperature during its upward movement. Change condenses into small droplets. In this way, weather phenomena such as clouds, rain, fog, and snow are formed under different climate conditions.