Download file to see previous pages...
Closer to the ground, in the troposphere, ozone is considered a pollutant with harmful effects on breathing and plants. However, the layer of “good” ozone lies in the stratosphere, between 20 to 40 kilometers from ground. It blocks most of the harmful ultraviolet rays that increase the risk of skin cancer, reduce yields in certain crops and also stress marine life from reaching the earth from sun (“Ozone - Good Up High Bad Nearby” 2009).
The depletion of the ozone layer has been most noticeable over the Antarctic region where a “hole” is seasonally created every year in spring since late 1970s. This hole, actually a large area in the stratosphere with severely depleted ozone, grew to 26 million square kilometers in 1998 and its largest size recorded was in 2006 when it touched 29 million square kilometers (“Ozone hole maximum is up on 2007” 2008).
The stratosphere above the Antarctic is crucial to maintaining the global average concentration of ozone layer. Ozone is unequally distributed around the globe and is concentrated near the poles (Is total ozone uniform over the globe?). The flow of winds to and from poles keeps the ozone in circulation globally. Depletion over the Antarctic, the area of highest concentration, contributes considerably to the net effect of overall ozone reduction in the atmosphere. It is also here that the thinning of this layer is most dramatic. Unlike other places, the chemicals, such as CFCs, that destroy ozone get trapped over the Antarctic during the dark winter through a unique phenomenon, the “polar vortex”, and become part of clouds that are unique to this region. Extreme cold also creates ice crystals in these clouds. During spring and summer, as the temperature warms, the ice crystals initiate reactions that break down the CFCs into more active chlorine molecules. These, in turn, break down the ozone molecules into oxygen (“Ozone Facts: What is the Ozone Hole?” 2009). As the ice
...Download file to see next pagesRead More
The outcome of the study suggested that the lower level of carbon dioxide gas might explain the Ice Ages. The major contributing scientists in establishing this relationship and predicting global warming were Arrhenius and Chamberlin.
However, air pollution is the most dangerous form of pollution that threatens the survival of human beings and the earth. This is due to the reason that living things (humans and animals) depend on air for sustainability. If the air is not clean, then that would immediately terminate the human and animal life.
As to why the regime is successful in contrast to other environmental and international treaties shall be herein discussed.
The breakthrough on the global concern over the depletion of the ozone layer was founded on two scientific studies: the 1970 study of Paul Crutzen who argued that the nitrogen oxides from fertilizers and supersonic aircraft can deplete the ozone layer; and that of Frank Sherwood Rowland and Mario Molina who hypothesized that a commonly used compound used as blowing agents in the production of plastic foams, for coolants in refrigeration and air conditioning systems, and even in aerosol sprays has a potential to destroy the ozone layer.
However, the ozone layer is depleting and we humans are responsible for that. We are planning our own destruction. There is a class of chemicals called chlorofluorocarbons (CFCs) which are greatly destroying the ozone layer (Edlin and Golanty 553). These
The sun is at an angle also.
In contrast, the sun is lower in the sun when areas are experiencing winter. This means that a beam of sunlight will have to cover more area which means that the earth does not get as hot. Another
ty, nitrogen pollution causes "changes in the composition and functioning of [aquatic] ecosystems and contributes to long-term declines in coastal marine fisheries" and biodiversity.
The roots are damaged by acidic rainfall, causing the growth of the plant to be stunted, or
The impacts of global warming have been seen in the changing climatic patterns around the world with the climatic seasons becoming less distinct as they were in the past. According to Good, Gosling, Bernie (2009), the rising sea levels
Fears of depletion of the layer that could have undermined the role of absorbing sunrays formed the basis of arguments that depletion of the layer was a one of the possible causes of global warming. Below is a discussion of ozone
5 Pages(1250 words)Essay
GOT A TRICKY QUESTION? RECEIVE AN ANSWER FROM STUDENTS LIKE YOU!
Let us find you another Assignment on topic Ozone Depletion for FREE!