environmental effects of ozone
DESCRIPTION
TRANSCRIPT
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ENVIRONMENTAL EFFECTS OF
OZONE
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OZONE
It
damages
the
vegetation
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OZONE
It shortens the
life of rubbers
and textile.
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OZONE
It is an irritant gas to
humans, producing eye,
nose and throat
symptoms, as well as
alteration to normal lung
function.
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OZONE
High concentrations
of ozone are
correlated with
decreased life
expectancy in
animals.
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OZONE AND THE
SST
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OZONE AND THE SST
SST consumes
enormous quantities of
fuel – 66 tons for each
hour of flight
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OZONE AND THE SST
83 tons of H2O, 207 tons
CO2, 3 tons CO, 3 tons NO
enter the thin air in the
stratosphere.
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SST MIGHT DO:
It might increase high
altitude cloudiness, possibly
affecting climate and giving
the sky a permanent haziness.
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SST MIGHT DO:
The increased moisture
might deplete ozone
through series of
chemical reactions.
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SST MIGHT DO:
Harold Johnston, achemistry
professor of the University of
California, completed calculations
which suggested that the ozone
shield was indeed threatened by the
SST fleet.
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SST MIGHT DO:
NO + O3 = NO2 +
O2
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RECENT FINDINGS IN
THE STRATOSPHERIC
OZONE
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FINDINGS
Starting in the early
1970’s, predictions have
been made that human
activities will lead to the
diminishing of the earth’s
protective zone.
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FINDINGS
The search for evidence of
downward trends of the
thickness of the ozone
layer was inconclusive
until the discovery of the
Antartic ozone hole in
1985
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FINDINGS
Ozone decreases
during the Antartic
spring are now well
documented.
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FINDINGS
Ozone decreases outside
the Antartic, at southern
mid-latitudes have been
reported, as well as the
heavy populated mid-
latitudes.
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FINDINGS
The Antartic ozone
hole was deep and
long-lasting and
demonstrated that
1987 was not
unusual.
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FINDINGS
1990 ozone hole was
also quite deep,
similar to both 1987
and 1989
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FINDINGS
The area of the ozone
hole has remained
constant for the 4
years.