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Chlorofluorocarbons Cfcs Nitrogen Oxides
1,336 wordsDramatic loss of ozone in the lower stratosphere over Antarctica was first noticed in the 1970 's by a research group from the British Antarctic Survey (BAS) who were monitoring the atmosphere above Antarctica from a research station. The Halley Research Station BAS research stations in the Antarctic Rumor has it that when the first measurements were taken in 1985, the drop in ozone levels in the stratosphere were so dramatic that at first the scientists thought their instruments were defective....
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Ozone Depletion Ozone Layer
5,350 wordsFrom: (Robert Parson) Newsgroups: sci. environment, sci. answers, news. answers Subject: Ozone Depletion FAQ Part I: Introduction to the Ozone Layer Organization: University of Colorado, Boulder Expires: Sun, 1 Feb 1998 00: 00: 00 GMT Message-ID: 67 rss$ Summary: This is the first of four files dealing with stratospheric ozone depletion. It provides scientific background for the more detailed questions in the other three parts. Keywords: ozone layer cfc stratosphere depletion These files are pos...
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Piece Of Paper Oxygen Molecules
1,524 wordsIn 1839, a German scientist Christian Schonbein was a professor of chemistry at the University of Basel in Switzerland. In addition to his teaching duties, he regularly performed secret experiments in hopes of finding out which substances make up the Earth's atmosphere. So Schonbein combined and separated a number of liquids and gases. During one of these experiments, Schonbein passed an electric charge thought a glass beaker of water, be noticed a very familiar odor. He first thought it was the...
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Chlorofluorocarbons Cfcs Ozone Depleting
1,295 wordsThe ozone layer is one of the oldest things on the planet, older than any of the ancient creatures we see in our museums today. The ozone layer has provided protection for the living components under it for millions of years, and without the ozone layer, we most likely would not be here today. Our evolution would have been cut off millions of years ago without our planets ability to provide protection from the ever-harmful rays from our sun. Each year since the late 1970 s much of the protective...
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Environmental Protection Agency Ozone Depletion
1,137 wordsThe ozone layer diminishes more each year. As the area of polar ozone depletion (commonly called the ozone hole) gets larger, additional ultraviolet rays are allowed to pass through. These rays cause cancer, cataracts, and lowered immunity to diseases. 1 What causes the depletion of the ozone layer? In 1970, Crutzen first showed that nitrogen oxides produced by decaying nitrous oxide from soil-borne microbes react catalytically with ozone hastening its depletion. His findings started research on...
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Ozone Layer Ultraviolet Rays
962 wordsThe Problem The atmospheric ozone layer protects all living things from the harmful effects of the Sun. In recent years however, much damage has been caused to the ozone layer, causing it to decrease in size. The depletion of the ozone layer has and will continue to have many detrimental effects on all living things on this planet. A thinner layer will allow more of the suns ultraviolet radiation to reach the Earths surface. In particular, it will be the increase of UV-B rays which will have the...
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Nitrous Oxide Greenhouse Gasses
3,082 wordsThe Global Warming Global Warming The world is getting hotter. 1998 was the hottest in one thousand years, and the nine hottest years on record have all been in the past two decades. Humankind's actions on a global scale have changed not just the landscape of the Earth, but the worlds climate too. Increasingly sophisticated measurements of the worlds climate and weather systems have provided a wealth of evidence that the Earth has been getting steadily warmer. Since the beginning of the industri...
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Parts Per Million Chlorofluorocarbons Cfcs
3,718 wordsIntroduction Orbiting Ozone Layer Ozone Layer Introduction Orbiting above the Earth, an astronaut can look down on our home and see the thin blue ribbon that rims our planet. That transparent blanket our atmosphere makes life possible. It provides the air we breathe and regulates our global temperature. And it contains a special ingredient called ozone that filters deadly solar radiation. The Atmosphere The gaseous area surrounding the planet is divided into several spherical strata separated by...
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Stratospheric Ozone Ozone Layer
2,496 wordsThe Atmospheric Ozone Layer The stratospheric ozone layer exists at altitudes between about 10 and 40 km depending on latitude, just above the tropopause. Its existence is crucial for life on earth as we know it, because the ozone layer controls the absorption of a portion of the deadly ultraviolet (UV) rays from the sun. UV-A rays, including wavelengths between 320 and 400 nm, are not affected by ozone. UV-C rays between 200 and 280 nm, are absorbed by the other atmospheric constituents besides...
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Carbon Dioxide Ozone Layer
1,519 wordsIn environmental science the green house effect is a common term for the role water vapor; carbon dioxide and ozone play in keeping the earths surface warmer than it would normally be. The atmosphere is primarily transparent to infrared radiation from the sun, which is mostly absorbed by the earths surface. The earth being much cooler than the sun, remits radiation most strongly at infrared wavelengths. Water vapor, carbon dioxide and ozone then absorb much of this radiation and remit a large pr...
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Books New York Stratospheric Ozone
1,223 wordsChloroflourocarbons were discovered in the 1920 s by Thomas Midgley, an organic chemist at General Motors Corporation. He was looking for inert, non-toxic, non-flammable compounds with low boiling points that could be used as refrigerants. He found what he was looking for in the form of two compounds: dichlorodifluoromethane (CFC- 12) and trichloromonoflouromethane (CFC- 11). In both compounds, different amounts of chlorine and fluorine are combined with methane, which is a combination of carbon...
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