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It is broken in the stratosphere. CFC's react with ozone to deplete it.
Lincoln Wolf
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What cause the ozone to break down?
CFCs
How do CFCs break down the ozone?
See "What is causing the depletion of the ozone layer?"
What caused ozone layer to break down?
CFCs
What causes the ozone layer to break down?
CFCs
What is causing the ozone layer to get damaged?
The presence of CFCs are creating holes in the ozone layer. UV light causes CFCs to be borken down, creating chlorine atoms that are capable of breaking down ozone into oxygen in the stratosphere. The holes in the ozone layer are formed when the ozone is broken down at a faster rate than it can reform. This enables more UV radiation to reach the earth's surface and it is a greater problem in the southern hemisphere.The ozone layer is getting damaged. It is due to the harmful UV rays of the sun.
What is the effect of CFCs on the ozone layer?
The CFCs are broken down, releasing chlorine in the process. The chlorine then breaks down the ozone in the stratosphere to form oxygen. When the ozone is broken down at a quicker rate than it can reform, holes in the ozone layer may appear. This allows more UV radiation to reach the surface of the earth and it is an issue in the southern hemisphere.CFC's react with ozone layer. This reaction causes their decomposition.
Chloroflurocarbons may be harming the ozone layer by?
Chlorofluorocarbons (CFCs) were emitted during the 20th century from aerosols, refrigerators and other appliances. When CFCs reach the ozone layer (up to ten years later) the chlorine molecules separate and destroy ozone molecules. The chlorine survives and lives to fight again. CFCs can remain in the atmosphere for up to 75 years. CFCs are no longer being emitted to the atmosphere and scientists hope the ozone layer will have repaired itself by 2060.
How do CFCs cause the ozone hole?
Chlorine breaks off from CFCs and destroys the ozone. Ozone is a protective layer in the upper atmosphere. It is formed, when oxygen molecules absorb short wavelength ultra violet radiations from the sun. Ozone is mostly destroyed by free radicals in the atmosphere. When compounds like CFCs (chlorofluorocarbons) and other halocarbons are released, they are dissociated by sunlight into chloride radicals. These radicals attack ozone, thereby decreasing its concentration. This results in a thinning of the ozone layer, and in polar regions, a hole. The holes occur at the poles, and usually in Antarctica because of the extreme cold. During the winter polar stratospheric clouds form which are able to convert gases in the atmosphere into Cl (chlorine) and ClO (chlorine monoxide). When the sun arrives at the end of winter, that is the trigger to begin. This is why the hole is largest in spring.
How is ozone produced in the stratosphere depleted?
Ozone depletion in the stratosphere is primarily caused by the release of certain chemicals known as ozone-depleting substances (ODS), such as chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs). These chemicals contain chlorine and bromine atoms that are released into the atmosphere through human activities. When these molecules reach the stratosphere, they are broken down by ultraviolet (UV) radiation, releasing chlorine and bromine atoms that can then catalytically destroy ozone molecules. This process leads to the depletion of ozone in the stratosphere.
Cfcs break down in the stratosphere under the influence of?
Light , release Cl which damages ozone .
Is the atmosphere thin over Antarctica?
No. Atmospheric pressure in Antarctica is about the same as it is anywhere else. Air density is actually greater than it is on most places because it is cold. However, the concentration of ozone in the stratosphere is much less over Antarctica. This is because the dynamics of the atmosphere concentrate man-made compounds called chlorofluorocarbons (CFCs) there. The CFCs act as catalysts that break down ozone into diatomic oxygen (O2).
How does the CFCs release catalyst that break down the ozone layer?
See "What is causing the depletion of the Ozone Layer?"in the "Related questions" section below.
