Atmospheric concentrations
and trends of halocarbons. Adapted from IPCC, 1992, 38.
CFC-11 and CFC-12
concentrations from 1978-1992. Dutton, E., NOAA (published in
Nature by Elkins et al, 1992).
Annual grouwth rates
of CFC-11 and CFC-12 from 1978-1992. Elkins, et al, 1992: Nature.
Calculated UV
spectrum of solar energy entering the atmosphere... (after C and E News. Nov24,
1986)
Change in biologically damaging
UV flux with change in ozone concentration...(after C and E News, Nov 24,
1986. )
Spectral distribution of ozone absorption and UV
increase. (Adapted from Kerr and McElroy, 1993: Science, Vol 262, 1032.)
Spectral
distribution of average daily total UV-B solar energy flux. (adapted from Kerr and
McElroy, Science, 262, 1034, 1993)
Regional average ozone depletion. Science. Vol.
256, Apr. 17 ,1992.
Measured (1960-1990) and
projected atmospheric concentrations of chlorine. (After C & E News,
May 24, 1993)
Biological
sensitivity and solar energy intensity as a function of wavelength. Source unknown.
Editorial cartoon.
Rowland, 1989: American Scientist, 77, 36. Permission granted Sigma Xi,
The Scientific Research Society.
CFC timeline.
Earthquest, UCAR.
Summary. Takle, G.S.,
1995.
Total Ozone for October 2, 1994.
