South Pole January 1, 1996
South Pole March 1, 1996
South Pole May 1, 1996
South Pole July 1, 1996
South Pole September 1, 1996
South Pole October 1, 1996
South Pole November 1, 1996
South Pole December 17, 1996
South Pole - Complete month of September, 1996
South Pole - Complete month of October, 1996
South Pole - Complete month of November, 1996
South Pole - Sequence of Ozone Hole Pictures - Sept. to Nov. 1994
South Pole - Sequence of Ozone Hole Pictures - 1979-1993
South Pole - Ozone Size Graph
South Pole - Ozone Concentration Minima in Dobson Units (DU)
South Pole - Ozone Altitude Profile 1993 &1995
South Pole - Ozone Altitude Profile - Springtime Progression for 1993
Ozone Concentration Measured over Switzerland
North Pole - Ozone Maps for 1979 to 1993
Ozone depletion over North America 79 vs 94
Explanation of the South Pole Wind Vortex
South Pole - Movie of Polar Vortex
HCl profile with altitude
HF profile with altitude
The above two graphics are part of the proof that CFCs cause the ozone problem because the HCl and HF profiles are very similar. HF has no known natural source, therefore HF could not get into the stratosphere except through CFCs. Pamela Zurer, "Satellite Data Confirm CFC Link in Ozone Hole", C and E News, January 2, 1995, p. 9.
Ozone layer depletion Links
|A. Caused by synthesis and use of chlorofluorocarbons (CFCs)||Ozone
Ozone Depletion - Specific brief Questions and Answers on ozone depletion only.
General information on ozone science - a general review
Ozone Hole Tour - Cambridge University, UK
Simple graphic of Ozone depletion
Ozone Hole - animation of the ozone hole in 1995.
Graph of ozone vs. altitude
Graphs showing comparison of ozone over North America - 1979 and 1994.
Ozone maps - South Pole 1979-1997
Ozone maps - Nouth Pole 1979-1998
Archive of ozone hole maps - Listed by most recent dates first. Click on the icon that says S.H. GIF for southern hemisphere.
EPA Home Page on Ozone - contains many links to other pages. Look here if interested in more information.
Controversy surrounding ozone depletion - This is a brief review of two opposing papers on several questions concerning ozone depletion.
Common Myths about the nonexistence of the ozone problem - a series of links.
Ozone Executive Summaries by Year
Effects from overexposure to UV
UV Index - Series of links relating to health issues and the UV Index. Includes a link to a National map of the daily UV Index.
|C. Possible control measures - Montreal Protocol||Montreal Protocol - Ozone Depletion: 1987|
QUES. 3: OZONE DEPLETION - Answer ONE of the
questions 3a-d below.
NOTE: These are new directions from those printed in the lab manual because they keep changing this site.
a. Click on Today's
Ozone Data and Images to get current real time data. The
color contour coding shows low ozone concentrations measured
in Dobson units of dark purple, pink, violet colors. White or
black colors mean that no data is available. Use the Back button
to return to the Earth Probe TOMS Data and Images Page.
USE the following to answer QUES. 3a and 3b.
QUES. 3a: First concentrate on the Antarctica,
look at a series of images starting with July 1 and look at one
or two date every month until December. You may need to go back
an get some of the 1997 dates for November and December. Which
months show evidence of the "ozone hole"? Evidence
of the ozone hole is when you begin to see contours of blue,
purple, pink, or dark purple. See the color bar for the Dobson
Units near the bottom of the graphic. In July and August you
will see a black spot on the south pole - this is NOT the ozone
hole, but only a lack of data due to the fact that the satellite
can not work when it is comptely dark at the poles as it is in
the winter which is July and August. Try to refine the dates
for the optimal duration of the ozone hole. Try some dates that
are about 15 days apart. What day(s) does the ozone hole begin(probably
sometime in August or early September) and end (probably near
end of November or early December) ?
QUES. 3b: For the Antarctica Ozone Hole
give the approximate date and lowest concentration of ozone,
in Dobson units, observed. Comment about the ozone hole growing
size and the minimum
concentration as the years have incrreased. Series of monthly ozone
Ozone Hole - graphs of concentration and size compared
to earlier years.
Based upon this analysis, where would you NOT want to live on a permanent basis because of increased exposure to UV due to lower ozone concentrations and possible increased risk of skin cancer? Closer to poles or closer to the equator? Northern U.S. or Southern U.S.?
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