Ozone layer deplection

Scientists in this age are working around the clock to develop Hydrofluorocarbons HFCs to take the place of hydrochlorofluorocarbons HCFCs and chlorofluorocarbons CFCs for use in vehicle air conditioning. Anderson and collaborators, of chlorine monoxide ClO in the stratosphere. These are categorized as ozone-depleting substances ODS.

It plays an important role in converting atmospheric carbon dioxide into oxygen. The Ozonosphere is found km 9 to 22 miles above the surface of the earth. A combination of low temperatures, elevated chlorine, and bromine concentrations in the upper stratosphere are responsible for the destruction of ozone.

Beginning in the late s, a large and rapid decrease in total ozone, often by more than 60 percent relative to the global average, has been observed in the springtime September to November over Antarctica.

The chief ozone-depleting substances include chlorofluorocarbons CFCscarbon tetrachloride, hydrochlorofluorocarbons HCFCs and methyl chloroform. This has led to an increase in the UV radiation reaching the earth. The results of this research study prompted the signing of a global treaty known as the Montreal Protocol in The substance is also utilized in foam products like mattresses and cushions and home insulation.

Even more convincing was the measurement, by James G. Its source remains a mystery, but illegal manufacturing is suspected by some. The ozone layer can be depleted by free radical catalysts, including nitric oxide NOnitrous oxide N2Ohydroxyl OHatomic chlorine Cland atomic bromine Br.

Usually ozone holes form over the Poles during the onset of spring seasons. This cyclic process absorbs radiation and is constantly occurring in the upper reaches of the stratosphere.

Greenpeace was given the patent, called it " Greenfreeze ," and left the patent as open source. This type of UV radiation is significantly less harmful to DNAalthough it may still potentially cause physical damage, premature aging of the skin, indirect genetic damage, and skin cancer.

It is expected to recover around The key observation is that, ordinarily, most of the chlorine in the stratosphere resides in "reservoir" compounds, primarily chlorine nitrate ClONO 2 as well as stable end products such as HCl.

In this process, it also absorbs ultraviolet radiations that are dangerous for most living beings. Basal and squamous cell carcinomas[ edit ] The most common forms of skin cancer in humans, basal and squamous cell carcinomas, have been strongly linked to UVB exposure.

What is Ozone Layer? To understand ozone layer, it would be helpful to know the different layers of the atmosphere.

The earth’s atmosphere is composed of many layers, each playing a significant role. The first layer stretching approximately 10 kilometers upwards from the earth’s surface is known as the troposphere. Ozone depletion, gradual thinning of Earth’s ozone layer in the upper atmosphere caused by the release of chemical compounds containing gaseous chlorine or bromine from industry and other human activities.

The thinning is most pronounced in the polar regions, especially over Antarctica. The Connection between Ozone Layer Depletion and UVB Radiation. Reduced ozone levels as a result of ozone depletion ozone depletionA chemical destruction of the stratospheric ozone layer beyond natural reactions.

Stratospheric ozone is constantly being created and destroyed through natural cycles. Ozone layer depletion leads to decrease in ozone in the stratosphere and increase in ozone present in the lower atmosphere.

Presence of ozone in the lower atmosphere is considered as a pollutant and a greenhouse gas. Ozone depletion describes two related events observed since the late s: a steady lowering of about four percent in the total amount of ozone in Earth's atmosphere (the ozone layer), and a much larger springtime decrease in stratospheric ozone around Earth's polar regions.

What is Ozone Layer? To understand ozone layer, it would be helpful to know the different layers of the atmosphere.

The earth's atmosphere is composed of many layers, each playing a significant role. The first layer stretching approximately 10 kilometers upwards from the.

Ozone layer deplection