How does air pollution deplete ozone layer?
The hole in the ozone layer is caused by air pollutants. Chemicals used as refrigerants, such as chlorofluorocarbons (CFCs), contain chlorine atoms. Releasing chlorine atoms into the atmosphere destroys ozone. A single chlorine atom can destroy thousands of ozone molecules.
What are the 4 causes of ozone depletion?
The main reasons for the ozone hole are chlorofluorocarbons, carbon tetrachloride, methyl bromide and hydrochlorofluorocarbons.
How is ozone layer getting depleted explain Class 10?
It protects the earth from harmful UV Radiations. When we use harmful pollutants like CFCs (Chloro Fluoro Carbons), it reacts with Ozone in the atmosphere and causes the Ozone layer to deplete.
Which pollutant can deplete ozone layer?
Chlorofluorocarbons (CFCs)
Chlorofluorocarbons (CFCs) and other halogenated ozone-depleting substances (ODS) are mainly responsible for man-made chemical ozone depletion. The total amount of effective halogens (chlorine and bromine) in the stratosphere can be calculated and are known as the equivalent effective stratospheric chlorine (EESC).
Which pollutants of air depletes ozone layer?
Chlorofluorocarbons (CFCs), hydrochlorofluorocarbons (HCFCs) and halons destroy the earth’s protective ozone layer, which shields the earth from harmful ultraviolet (UV-B) rays generated from the sun.
Which gas is found in Ozonosphere?
The ozone layer or ozone shield is a region of Earth’s stratosphere that absorbs most of the Sun’s ultraviolet radiation. It contains a high concentration of ozone (O3) in relation to other parts of the atmosphere, although still small in relation to other gases in the stratosphere.
What is ozone layer depletion in short?
Ozone layer depletion means the thinning of the ozone layer present in the upper atmosphere. That is harmful to nature and the atmosphere. Ozone layer depletion is one of the major problems for the atmosphere and also for all the living beings including the flora and fauna of this earth.
Why is ozone layer depletion at the higher level of?
Ozone layer is getting depleted at the higher levels of the atmosphere due to effect of chlorofluorocarbons (CFCs) which are used as refrigerants and in fire extinguishers.
Is ozone layer still depleting?
Yet in a new study published in Atmospheric Chemistry and Physics, scientists report that one crucial section of the ozone layer still seems to be declining steadily. The ozone layer resides in the stratosphere, the region of atmosphere from 10 to 50 kilometers above Earth’s surface.