In cities such as Los Angeles and Mexico City smog is a constant problem. Photochemical smog is the most common throughout the United States in large cities and mainly consists of ozone located in the troposphere. Contaminants, therefore, reduce the equilibrium ozone concentration, allowing harmful ultraviolet rays to penetrate earth surface and damage sources of food. Over the past 50 years, the ozone has been significantly depleted by chemicals released into the atmosphere like chlorofluorocarbons CFCs. Surveys indicate that, by the year , around sixty million Americans will succumb to skin cancer because of depletion of the ozone layer. Has ozone been beneficial or detrimental to humans over the course of the past century?
So is it something to be truly worried about or is it just a ploy. These rays are very harmful, especially to the human skin and can damage the melanin layer of the skin. It is becoming thinner and developing holes, like the large hole over Antarctica. In the form of heat, light from the sun warms the Earth.
Over the past 50 years, the ozone has been significantly depleted by chemicals released into the atmosphere like chlorofluorocarbons CFCs. Image Courtesy : gmes-atmosphere. The ozone layer can be depleted by free radical catalysts, including nitric oxide NO , nitrous oxide N2O , hydroxyl OH , atomic chlorine Cl , and atomic bromine Br.
The ozone layer and a stable climate temperature are the only thing protecting life on earth from the deadly UV rays and harmful global temperature rise. Pollution is presented in many, many ways. Under the Protocol, 37 countries commit themselves to a reduction of four Green House Gases GHG carbon dioxide, methane, nitrous oxide, sulphur hexafluoride and two groups of gases hydrofluorocarbons and perfluorocarbons produced by them, and all member countries give general commitments. Air pollution is another consequence of overpopulation. Another name for stratosphere is protective ozone layer because it can help to protect human from the harmful effect of the ultra-violet radiation UV ray by absorbing it.
Has ozone been beneficial or detrimental to humans over the course of the past century? Scientists estimate that average temperature could climb about 2 degrees Celsius in 20 years. Well read the following and decide. When CFCs were invented, no one realized that these chemicals used as refrigerants would eventually damage the ozone layer.
The article emphasizes the fact that ozone-depleting gases are still being used. Fossil fuels are known as a big cause of global warming. CFCs released up to , amounted to 15 million tones.
However the ozone continues to be depleted because of deforestation.
Exposure to solar UVB radiation has been shown to affect both orientation and motility in phytoplankton, resulting in reduced survival rates for these organisms. Booms are designed to act as a barrier for floating water pollution. Also, poverty and the economy are more hazardous than throwing a Styrofoam cup onto a highway. It is an important issue because it concerns health and well being now and tomorrow.
Ever since this was discovered scientists, government, and citizens have been making efforts to control and reverse the damage done to the ozone. The usage of firewood for instance leads to the formation of Carbon monoxide, which is an unstable carbon compound.
The major problem, the rapid depletion of the ozone layer through the emission of ozone depleting substances ODS such as CFCs, halons, and methyl chloroform, was brought into public awareness in when a paper by Joseph Farman, Brian Gardiner, and These compounds, including methane as known as CFC Chlorofluorocarbon , have been serious factors causing global warming. Rise in the temperature, various skin diseases, decrease of immunity etc are the probable results. In recent years however, much damage has been caused to the ozone layer, causing it to decrease in size. The last problem you would think of is the depletion of the ozone layer.