How did the ozone layer began?

Answer 1

The ozone depletion is actually something happening naturally. It is an ongoing process. The moment ozone was formed, its formation and depletion were the phenomenons that run parallel to each other.

However the rate of formation of ozone was same as its depletion so no frequent changes were seen in its thickness or concentration. However the water vapour was still present at that time which could deplete ozone but the factors like the CFC's or other ODS i.e. ozone depleting substances were not present at that time.

The ozone depletion and ozone formation are actually the phenomenon which were or are carried by the same high energy ultraviolet radiations. These ultraviolet radiations make the oxygen molecules present in the lower stratospheric region of the atmosphere dissociate onto two single atoms of nascent oxygen i.e. [O]. These nascent oxygen atoms individually react with the oxygen molecules to form ozone molecule. However the same Ultraviolet radiations make the ozone molecule break down into oxygen molecules. However with the start of the industrial revolution and the discovery of the CFC's the rate of depletion of ozone increased as compared to the formation rate and thus a so called ozone hole was formed in the ozone layer of the earth.

Answer 2

Ozone was first discovered / identified in 1840. Ozone was being used to treat drinking water in the late 1800s, early 1900s. The ozone layer was discovered in 1913. Ozone Research and Equipment Corp started in the early 1960s. So it depends on what kind of "ozone research" you meant.

Answer 3

The ozone layer began forming billions of years ago when the Earth's atmosphere contained high levels of oxygen. The oxygen combined with ultraviolet radiation to create ozone (O3) molecules, which accumulated in the stratosphere and formed a protective layer that absorbs and blocks harmful UV radiation from the sun.

Answer 4

The ozone layer began with UV. UV is the one thing that can create such ozone.