We often focus more on air pollutants like PM2.5, carbon monoxide, and nitrogen oxide and ignore ozone. Some of you may think that is this not a good thing? Since a large amount of ozone is being produced on the ground while there is an ozone hole above us. The ozone at the surface level can simply go up to close the ozone hole. This seems beneficial. But unfortunately, this does not happen.
The first reason is that this ozone does not ascend upwards. And the second reason is that the concentration which is harmful to us on the surface, is still a very low concentration compared to the concentration we need in the atmosphere to make the ozone layer. And as you saw from the different chemical reactions, ozone is a very reactive gas. So we cannot transport it higher into the atmosphere easily.
Now the question arises if so much ozone is being formed due to human activities, how did the ozone hole form? It began in the 1950s-60s. There were many research stations in Antarctica which were set up to study space, Earth and weather. Some of these research stations were actually monitoring the ozone layer.
