is released by cooling apparatus’ such as the refrigerator. These gasses have been proven to destroy the ozone. Furthermore, the book goes on to prove that the major impacts causing global warming are not natural but mostly human made. It states that the hole in the ozone is not mostly caused by…
NRC (National Research Council), 1991. Rethinking the Ozone Problem in Urban and Regional Air Pollution.…
U.S Environmental Protection Agency (2014, March 12). The AQI Guide for Ozone [Graph]. Retrieved from…
The Du Pont Freon Products Division’s main business is production and sale of chlorofluorocarbons (CFCs) which are mainly used in refrigeration equipment and air conditioning systems. In 1987, the division accounted for two percent of Du Pont’s revenue and employed 1200 people. Starting in the early 70s, concerns have been expressed that CFCs contribute to and might cause the depletion of the ozone layer. In 1988, however, the first hard evidence was published proving that CFC causes the ozone layer to deplete. This contribution to the depletion is, according to the evidence, widespread and more severe than originally believed. In face of the new evidence, Joe Glas, CEO of Du Pont Freon Products Division needs to decide what the future of the companies CFC business is going to be. In order to derive the decision, this essay will first look at Du Pont’s Strategy regarding the CFC business from 1974 to 1986 and afterwards consider the impacts of the Montreal Protocol and the Trends Panel Protocol.…
The ozone layer is one of the most debated scientific subjects of the last decade. The growing problem of its depletion is being researched heavily all over the world, and methods are being researched to try and solve the problem. There have also been many debates concerning the relationship between the ozone layer and the onset of global warming. Before solutions can be developed, however, what the ozone layer actually does and what is causing it to be depleted must be understood.…
Environment Canada Environnement Canada Ozone Depletion and Climate Change: Understanding the Linkages Angus Fergusson Meteorological Service of Canada Published by authority of the Minister of the Environment Copyright © Minister of Public Works and Government Services Canada, 2001 Catalogue No. EN56-168/2001E…
Air pollution is the introduction into the atmosphere of chemicals, particulates, and biological matter that cause harm to humans, other living organisms, or cause damage to the natural environment. Stratospheric ozone depletion (contributed to air pollution) has long been recognized as a threat to human health as well as to the Earth’s ecosystems. The Earth is capable of cleaning itself of a certain level of pollution, but man-made pollutant have become too numerous for the Earth’s natural mechanisms to remove. We are seeing the results of this overload in the form of acid rain, smog, and the variety of health problems that can be contributed to our environment. (Godish)…
Central idea: The ozone layer/"hole" is caused by fluct. in the environment and CFC's are little if any of the cause of ozone depletion. CFC's are very heavy, they stay close to the ground and do not affect the stratosphere. Volcano's put out approx 10X more times chlorine than man produces. Ozone Center of WA states: "The 1991 volcanic eruption of Mount Pinatubo led to temporary severe ozone depletion but recent observations have shown that ozone concentrations have returned to pre-Pinatubo levels." The change in the ozone layer is related to seasonal…
References: Carlowicz, M.; Lindsey, R. Earth Observatory: The World We Avoided by Protecting the Ozone Layer, Earth Observatory, Goddard Space Flight Center, NASA, May 13, 2009: http://earthobservatory.nasa.gov/Features/WorldWithoutOzone/ page1.php [accessed Feb 2013]. Wiscombe, W. Aura: A Mission Dedicated to the Health of the Earth’s Atmosphere, Earth Observatory, Goddard Space Flight Center, NASA: http://earthobservatory.nasa.gov/ Features/Aura/ [accessed Feb 2013]. Allen, J. Chemicals in the Air: Latest Results from NASA’s Aura Satellite, ChemMatters, April 2008, 26 (2), pp 15–17. The ozone hole is shown in purple above the Antarctic on Sept. 16 in the years 1979, 1987, 2006, and 2011. The Sept. 16 date was chosen because it is the International Day for the Preservation of the Ozone Layer. The maps were produced with data collected by statellite istruments, including the Ozone Monitoring Instrument on the Aura Satellite. They show that the ozone hole kept increasing from 1979 to 2011, although to a lesser degree between 2006 and 2011. 14 ChemMatters, APRIL 2013 www.acs.org/chemmatters Mike Carlowicz is a science writer from Massachusetts and the author of three books on the sun, moon, and space weather. He is the editor of the NASA Earth Observatory.…
The ozone layer protects us from ultraviolet B (UVB) radiation. UVB radiation damages human DNA, weakens the immune system, and is the primary cause of skin cancer (Donnatelle, 2010).…
The speech, “Proposed Ban of Ozone-Depleting Aerosol Spray,” describes a five-month study that was conducted in 1974 by a special administration task force made up of a group of scientific researchers who concerned themselves with the dispersion of fluorocarbons. These fluorocarbons were found in most aerosol cans, air conditioners, refrigerators, and industrial productions. When the products employed they floated up into the earth’s atmosphere and turned into chlorine, thus breaking down the ozone layer. The ozone layer is a deep layer in the stratosphere that protects the earth from harmful ultraviolet radiation by absorbing them within the oxygen atoms. Not until 1978 did these researchers propose a ban against the release of fluorocarbons into the earth’s atmosphere.…
One the main reasons I believe there are bigger issues is because we simply do not have enough data to back up the ozone depletion theory. The first time the ozone was even discovered was in 1839 by Swiss chemist, Christian Schonbein, but it wasn’t measured reliably until 1918 by Robert Strutt. Having only 100 years of evidence, considering how old the earth is reported to being, doesn’t make the claims that are being made valid enough to rely on them as fact, and as a problem. Another reason I don’t believe the data is reliable enough is because we are witnessing the ozone replenishing itself season after season, especially in Antarctica. Each year the ozone develops a hole in it caused the unusual atmospheric conditions that exist during the Antarctic winter. However, it fills back in again by mid-summer. Manmade Chloro-fluoro-carbons (CFCs) are capable of destroying ozone, but they aren’t the only substances that deplete the ozone from time to time. However, the Montreal Protocol was introduced about 20 years ago to limit and control the level of CFCs, and other compounds, released into the earth’s atmosphere. The NASA website states that the protocol has been a huge success, which furthers my…
Ozone layer is important because it protect earth from the UV radiations coming from upper atmosphere, some gazes are harmful for the ozone layer and caused the creation of a hole in that layer, these gazes are prohibited in the protocol of Montreal.…
2. Nitrogen and oxygen make up 99% of the volume of clean, dry air. Nitrogen: 78%, Oxygen: 21%…
Environmental protection is an increasingly pressing issue all over the world. Ozone depletion, green house effect, global climate changes or global warming, etc, are the main issues in environment. Recent years, many countries and various organizations have paid more attention into environmental protection. Some pacts and protocols have been delivered. A treaty about global environmental protection will be discussed by 192 nations in Copenhagen this December although it seems unpractical to complete a new bill within three months.…