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9 Oct 2013 ties such as emissions of CFCs, HCFCs and other organo-halogens lead to the depletion of ozone. The ozone depletion resulted in secondary production of an ozone layer near the ground (terrestrial ozone layer), which is responsible for adverse effects on plants, humans and environment with increased
Ozone depletion refers to the thinning of the ozone layer, which allows more UV radiation to reach the Earth's surface. – Thinning ozone layer discovered in the 1980s. – Ozone holes at the south and north poles. Page 3. Page 4. Ozone Depletion. • Major Cause: chlorofluorocarbons (CFCs). – Chemicals invented in the
•The ozone layer, situated in the stratosphere about 15 to 30 km above the earth's surface. •Ozone protects living organisms by absorbing harmful ultraviolet radiation (UVB) from the sun. •The ozone layer is being destroyed by CFCs and other substances. • Ozone depletion progressing globally except in the tropical zone.
11 Sep 2008 Ozone depletion describes two distinct, but related observations: a slow, steady decline of about 4 percent per decade in the total volume of ozone in Earth's stratosphere(ozone layer) since the late 1970s, and a much larger, but seasonal, decrease in stratospheric ozone over. Earth's polar regions during
Ozone Depletion Fact Sheet Series: KS4 & A. 2. Introduction. The Science of Ozone Depletion. 01. What is Ozone? 02. Ultraviolet Radiation. 03. The Ozone Layer. 04. Ozone Depletion in the Stratosphere. 05. Chlorofluorocarbons. 06. Other Ozone Depleting Substances. 07. The Ozone Hole: Antarctica. 08. The Ozone Hole:
Tom McElroy (Environment Canada): MANTRA Project. Special thanks for comments to: Vitali Fioletov (Environment . Concentrations of ozone-depleting substances are expected to decline over the coming century, bringing a gradual recovery of the ozone layer. Figure 2b. Source: J. Elkins, NOAA. Source: Adapted from
Abstract - There are many situations where human activities have significant effects on the environment. Ozone layer damage is one of them. The objective of this paper is to review the origin, causes, mechanisms and bio effects of ozone layer depletion as well as the protective measures of this vanishing layer.
29 Apr 2016 Full-text (PDF) | This study was conducted at University of Gujrat during 2014-2015 as a term paper for Master of Philosophy. The data regarding effect of ozone depletion on human was reviewed and compiled as a review paper from various published articles of international reputed journals, annual/
31 Mar 2013 Mean Ozone Hole Size. 0. 10. 20. 30. 1979 1982 1986 1989 1992 1996 1999 2002 2005 2009 2012. Area (millions of square kilometers. Area of Antarctica. Data from: ozonewatch.gsfc.nasa.gov/meteorology/annual_data.html. Sunday, March 31, 2013
The stratospheric ozone layer forms a thin shield in the upper atmosphere, protecting life on Earth from the sun's ultraviolet (UV) rays. It has been called the Earth's sunscreen. In the 1980s, scientists found evidence that the ozone layer was being depleted. Depletion of the ozone layer results in increased UV radiation
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