Ozone Depletion

Topics: Ozone depletion, Chlorofluorocarbon, Ozone layer Pages: 3 (839 words) Published: August 14, 2013
Ozone Depletion
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Abstract
Environmental issues have been a major consideration in the World today. Many laws and regulations have been made to protect the environment. Conferences and meetings have been held in several countries to discuss the issues (Solomon, et.al, 1987). Introduction

Ozone depletion refers to the destruction of the stratospheric ozone which is caused by various factors. It happens when the layer has been negatively affected severely and it takes time (Dobson, 2005). This causes the ultraviolet rays to reach the Earth through the ozone hole causing many impacts on marine ecosystem, human beings and on crops. Ozone depletion is mainly as a result of the green house gases. This paper is going to focus on the causes, impacts, possible solutions and the relation of ozone depletion to Saint Leo core values of respect and responsible stewardship. Ozone Depletion

Ozone depletion can be caused when the balance between the natural production and destruction of the stratospheric ozone is affected (Dobson, 2005). Despite this, an5thropogewnic causes are taken as the main causes of the depletion at the moment. It is believed that the natural phenomenon causes a temporary destruction but Chlorine and Bromine released as CFCs have more effects. These Chlorofluorocarbons cause effects that cannot be reversed they cannot mix with rain drops or be destroyed by other chemicals. Chlorofluorocarbons can survive in the air for 20 to 120 years causing more destruction. When they reach the stratospheric ozone they are broken down by the ultraviolet rays therefore releasing Chlorine. Researches show that CFCs contribute to about 80% of the ozone depletion. The main impact of ozone depletion is global warming (Gareau, 2010). When the green house gases are released they destroy the ozone layer allowing ultraviolet rays to reach the Earth directly. Ozone...

References: Dobson, R. (2005). "Ozone depletion will bring big rise in number of cataracts". 331 (7528): 1292–1295.
Fears, T.R, Bird, C.C., Guerry D, et al. (July 2002). "Average midrange ultraviolet radiation flux and time outdoors predict melanoma risk". Cancer Res. 62 (14): 3992–6.
Gareau B.J. (2010). "A critical review of the successful CFC phase-out versus the delayed methyl bromide phase-out in the Montreal Protocol". International Environmental Agreements-Politics Law and Economics 10 (3): 209–231.
Solomon, P. M. et.al. (July 1987). "High concentrations of chlorine monoxide at low altitudes in the Antarctic spring stratosphere: secular variation". Nature 328 (6129): 411–3.
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