Why is the air always better at night than during the day?

In the clear and cloudless night, due to the strong effective radiation on the ground, the temperature near the surface layer drops rapidly, while the air layer in the upper layer cools less, resulting in a temperature inversion phenomenon of warm at the top and cold at the bottom. This inversion is strongest before dawn and disappears from top to bottom after sunrise. In the high-pressure control area, there is a large-scale downdraft at high altitude, and due to the adiabatic warming effect of the downdraft, the termination height of the sinking movement is inverted.

The existence of temperature inversion has a considerable impact on the weather and the spread of atmospheric pollution. It hinders the vertical movement of air, hinders the diffusion of soot, pollutants, water vapor condensates, favors the formation of fog and makes visibility worse, making air pollution more serious. So the air is not good at night, but it is better during the day.

Hehe, delusion. Because the temperature is lower at night, just like the morning air, it gives a fresh feeling because it is cold, which is actually wrong. Because there are fewer vehicles and pedestrians on the street at night, harmful gases are deposited close to the ground, so the air quality is poor, and the plants do not photosynthesize at night, but also inhale oxygen and exhale carbon dioxide, so the night air is actually not good, fresh or more precisely, cool.

As for why the night is so beautiful, I think that it is certainly beautiful to have a sky full of stars and a relaxed mood.

Be quiet. Leisure, a busy day, the evening is a time to rest, looking at the sky makes people relax, and the hard work of the day is quickly gone

How small people are in the quiet sky in the middle of the night

I also love the silence of the starry sky at night

Day and night are sunny days and the temperature difference will be larger, the reason is that the atmosphere is less weakened by solar radiation during the day, the solar radiation reaching the ground is strong, the temperature is high, and the negative radiation of the clear atmosphere at night is weakened and the heat to the ground is less, and the temperature is low.

The temperature difference between day and night is cloudy, because the atmosphere weakens the solar radiation during the day, the solar radiation reaching the ground is weak, and the temperature is lower than that of the clear day, and the increase of atmospheric inverse radiation at night is more heat to the ground, and the temperature is higher than that of the clear night.

There is a lot of cold air at night, and there is no wind, so the air does not flow.

In the Northeast, burning coal for heating causes air quality pollution.

Poor air quality at night is caused by low air pressure at night.

I think a lot of people are working at night now, so the air is not good.

The earth is a non-luminous and opaque sphere, and the sunlight can only illuminate half of the globe at the same moment, and the half of the globe illuminated by sunlight is day, and the half of the globe that is not illuminated by sunlight is the dividing line (circle) between the night, day hemisphere and the night hemisphere, which is called the morning and dusk line (circle).

The earth we live on does not emit any light in itself. The light and heat on the earth are mainly due to the fact that the sun is shining, and the hemisphere where the sun shines is daytime, and the place where the sun does not shine is night. The earth is a sphere, and it constantly rotates from west to east around the earth's axis, which is called the rotation of the earth.

In this way, the part of the earth that receives the sun's heat is constantly changing. The part that gets the sun's heat is constantly changing, and the part that doesn't get the sun's heat is also changing, resulting in the constant alternation of day and night.