Ozone cooling knowledge

In order to make up for the increasingly thin ozone layer and even the hole in the ozone layer, people try every means, such as promoting the use of fluorine-free refrigerants, to reduce the destruction of ozone by freon and other substances. The world has also set up an international ozone layer protection day for this purpose. The impression seems to be that the more ozone should be protected, the better. In fact, this is not the case. If there is too much ozone in the atmosphere, especially in the atmosphere near the ground, it will be a disaster to human beings if the concentration of ozone is too high. Ozone is also a greenhouse gas, which can lead to a more serious greenhouse effect.
Ozone is a trace gas in the earth's atmosphere. It is formed by the combination of oxygen atoms and surrounding oxygen molecules after the oxygen molecules in the atmosphere are decomposed into oxygen atoms by solar radiation. It contains three oxygen atoms. More than 90% of the ozone in the atmosphere exists in the upper part of the atmosphere or the stratosphere, 10 to 50 kilometers from the ground, which is the atmospheric ozone layer that needs human protection. There are still a small number of ozone molecules hovering near the ground, which can still play a role in blocking ultraviolet radiation. However, some experts found that the concentration of ozone in the atmosphere near the ground has a trend of rapid increase, which makes people feel bad. Although ozone plays an important role in protecting human beings and the environment in the stratosphere, if its concentration increases in the troposphere, it will have harmful effects on human health. Ozone can stimulate the eyes and respiratory tract, and also affect the lung function. Higher concentrations of ozone are also harmful to plants.