Why does the higher the altitude, the lower the temperature?

The higher the altitude, the lower the temperature for the following reasons:

1. The higher the altitude, the thinner the air.

In fact, the answer is simple, because the higher the altitude, the thinner the air, which leads to its poor heat storage capacity and ultimately its low temperature. In the previously reported incident of breaking the front windshield of a Sichuan Airlines plane, the pilot braved the low temperature of MINUS 30-40 degrees and carried out flight operation for more than ten minutes. It can be seen that even if we are as hot as dogs on the ground, the temperature in the sky is still extremely low.

2. The higher the altitude, the less heat energy reflected by the ground will be received.

In addition to the amount of air, the amount of heat energy reflected by the ground also has a great influence on the temperature. Research shows that 38% of the heat energy radiated by the sun to the earth will be reflected back to space by the atmosphere and the ground, and only 12% will be absorbed by the atmosphere. The remaining 50% will be absorbed by the ground, so the ground is also an important heat source of temperature.

The closer you are to the ground, the more heat radiation you receive from the ground, so the higher the temperature. The farther away from the ground, not only the less ground thermal radiation is received, but also the heat storage performance of the atmosphere is very low because of the thin air. So the higher the altitude, the lower the temperature.

Therefore, even Mount Kilimanjaro on the equator has become a great spectacle on the equator because of its high altitude and snow all year round.

Extended data

The influence of altitude on people themselves

1. The physiological response brought by altitude is a short-term change, and people will gradually adapt to this high-altitude environment.

2. The influence of atmospheric pressure on people

Atmospheric pressure is not only related to altitude, but also to weather. Many studies have found that the impact of atmospheric pressure on people can be summarized into three categories:

1. It increases the incidence of diseases; Some clinical studies show that the incidence rate is related to seasons;

Even the change of seasons will affect one's psychology, such as the influence on mood. When the season changes, the incidence of mental illness, suicide rate and social conflicts will be affected;

3. Influence is the influence on people's behavior. Many studies show that the school's separatist behavior and public security chaos change with the weather and air pressure. Generally speaking, low pressure is accompanied by high altitude and stormy weather, while high pressure is usually sunny.

References:

Baidu encyclopedia-altitude