|
|
| About site: Issues/Environment/Ozone Depletion - Common Ozone Depletion Myths |
Return to Society also Society
|
| About site: http://info-pollution.com/common.htm |
Title: Issues/Environment/Ozone Depletion - Common Ozone Depletion Myths Brief discussions of several common misconceptions.
|
| Alexa statistic for http://info-pollution.com/common.htm |
Please visit: http://info-pollution.com/common.htm
|
| Related sites for http://info-pollution.com/common.htm |
| O\'Donnachadha_-_Tir_Na_Og DVDs, Science, Music, short videos, Jokes and their pets. | | Usoric,_Zoran Award winning art director from Yugoslavia. Includes his profile, awards won, digital portfolio, resume, and links. | | Chennamangalam,_Jayanth Includes personal information, a weblog, downloads, and photographs. | | Swiger_Run_History_Center_and_Museum,_Inc Non-profit, public library located on state route number 23, Doddridge County, West Virginia. Goal is to preserve the history of this portion of the Commonwealth of Virginia, now West Virginia and th | | Gamaliel_Talks_Explore_Romani_Experience From the University of Wisconsin. | | Bridal_Showcase Helping Washington D.C., Virginia and Maryland couples plan their weddings. | | Toxic_Wells,_NJ_-_A_Satire This tongue-in-cheek Chamber of Commerce brochure puts a brave face (and positive spin) on the problems of a mythical environmentally challenged town. | | Firewalking_Seminars Information on firewalking, hosting events, photo gallery, bio of Denver Dobbins, and link to Yahoo message board. | | Isle_of_Man_Post Isle of Man Post | | This_Day_in_Alternate_History A daily calendar with at least one alternate history scenario per day. Input on the scenarios or suggestions for new scenarios welcome. | | Heritage_Reformed_Church_Denomination Website and directory for denomination, with links to churches and its seminary. | | About_Emmanuel_Levinas A short biography by Lois Shawver. | | Alliance_Francaise_in_Thailand View listings of shows, classes, and events. Bangkok, Thailand. | | The_Skanner_Online Online Edition of African American Newspaper published in Seattle, WA and Portland, OR. Covers local, regional, and national issues relating to the African American community. | | Natural_Rationality_-_Ben_Hardy\'s_page Online papers, newsfeed and resources about neuroeconomics, cognition, decision-making, evolution, and philosophy. | | Austria_Post_-_Österreichische_Post_AG Österreichische Post AG is Austria's leading service provider in mail carriage. Österreichische Post AG was founded on March 3, 1999 as a subsidiary of Post and Telekom Austria. | | LawSchool_com Law school activities, admissions, information, news, and resources. | | Jed_Friend,_Ph_D_,_Inc_ Industrial and organizational psychologist, based in Florida, offering services relating to discrimination, hiring, and termination. | | New_Word_Alive Christian evangelical conference providing Bible teaching and pastoral ministry | | Parkland_Memorial_Hospital__The_Kennedy_Connection Essay describing some of the events of the day the hospital's doctors tried to treat the president. Includes Gov. John Connally's letter to the hospital and a scan of the Life magazine spread. |
|
This is websites2007.org cache of m/ as retrieved on 2008.10.11 websites2007.org's cache is the snapshot that we took of the page as we crawled the web. The page may have changed since that time.
|
Common ozone depletion myths Common ozone depletion mythsThere is overwhelming evidence that humans are responsible for the Antarcticozone "hole". And there is strong evidence that the ozone layer elsewherehas been damaged. Three scientists who developed the ozone depletion theorywere awarded the Nobel Prize in chemistry. With so much evidence for anenvironmental crises, it is little wonder that so many anti-environmentalmyths have developed about ozone depletion.Common myths about ozone depletion:Myth: CFCs cannot reach the stratosphere because they are heavierthan air.Fact: Air in the lower atmosphere (which extends far above thestratosphere) moves in masses, not as individual molecules. A number of studieshave found CFCs and the products of their breakdown in the stratosphere (Rowland,EPA).Myth: Volcanoes and other natural sources contribute much more chlorinethan CFCs to the ozone layer.Fact: Chlorine compounds from natural sources are soluble, andso are washed out of the atmosphere. CFCs, by contrast, are not soluble andso are able to reach the stratosphere. A number of studies have shown thatthe majority of chlorine in the stratosphere comes from man-made chemicals(Rowland, Taubes, Russell et al,EPA).Myth: The Antarctic ozone "hole" was there all along, it was discoveredin the 1970's because that's when satellite measurements started.Fact: The hole was discovered using a ground based instrument thathad been in use since 1956. There was no hole until about 1976. That meansabout 20 years with no hole. Since the 70s the hole has continued to increasein size and intensity (Farman, et al, Jones & Shanklin).Myth: The "hole" was present when the first measurements were madein 1956.Fact: The first ozone measurements made in the Antarctic were lowerthan similar measurements made in the Arctic. However, this is the naturalcondition, not the decrease that is referred to as the ozone "hole". As notedabove, there was no "hole" during the first 20 or so years of measurement.(Parson, Christie).Myth: Some French researchers found an ozone hole in 1958.Fact: Paul A. Newman (Newman) looked at all the facts and found that"There is no credible evidence for an ozone hole in 1958."Myth: Spray cans deplete the ozone layer.Fact: Spray cans (in the United States) have not used CFCs aspropellants for about 20 years.Myth: Of course there is an ozone hole in the winter, thereis no sunlight to make new ozone.Fact: The ozone hole occurs in the spring, after the sunlight returns. There is little destruction or creation of ozone during the winter(Parson)Myth: DuPont supported the ban on freon because the patent wasabout to run out.Fact: The patent for making freon was issued in 1928, it ranout in the 1940s, long before any concern about ozone depletion. (TheHistory of Freon)References Christie, Maureen,TheOzone Layer: A Philosophy of Science Perspective, CambridgeUniversity Press, 2000Farman, et al., "Large Losses of Total Ozone in Antarctica RevealSeasonal ClOx/NOx Interaction", Nature, May16, 1985, pp 207-210.Jones & Shanklin, "Continued Decline of Total Ozone over Halley, Antarctica,since 1985", Nature, August 3, 1995 pp 409-411.Newman, Paul A., "Antarctic Total Ozone in 1958", Science, April 22,1994, pp 543-546.Parson,Robert wrote a lengthy FAQ on ozone depletion, the best source of informationI have found.Rowland, Sherwood, "The Need for Scientific Communication with the Public"Science, June 11, 1993, pp 1571-1576.Russell, et al, "Satellite Confirmation of the Dominance of Chlorofluorocarbonsin the Global Stratospheric Chlorine Budget" Nature, February 8, 1996,pp 526-529.Taubes, Gary, "The Ozone Backlash", Science, June 11, 1993, pp 1580-1583.~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~Written by JimNortonVisit my anti-environmental myths home page.Visit my practical skepticism pageGo to Correcting myths about ozone depletionWhat's new Search this site powered by FreeFind The text on these pages may be freely copied, distributed and posted as longas my name, this statement and the URL(http://info-pollution.com/common.htm)are included. |
|
| |
Brief | discussions | of | several | common | misconceptions. |
|
http://info-pollution.com/common.htm
Common Ozone Depletion Myths 2008 October
dvd rental
dvd
Brief discussions of several common misconceptions.
Rules
|
© 2008 Internet Explorer 5+ or Netscape 6+
|
|
Recommended Sites: 1.
Arts -
Business -
Computers -
Games -
Health -
Home -
Kids and Teens -
News -
Recreation -
Reference -
Regional -
Science -
Shopping -
Society -
Sports -
World
Miss Gallery
- Top Anime Hentai
- DVD rental by mail
- Loans - Buy PSP - Secured Loans - Personal Loan - Mortgage Calculator
|
