Figure 2-2: In the stratosphere, NOx both catalytically destroys ozone
and acts to interfere with the destruction of ozone by reactions of HOx and
halogens. Shown is a calculation of the rate of ozone loss in the lower stratosphere
for springtime mid-latitude conditions during March. The loss from each family
is illustrated. Ozone loss in the lowermost stratosphere is quite slow (a
few percent per month). The right panel shows the effect on the removal rate
of ozone when 20% more reactive nitrogen is added to the stratosphere uniformally
(calculations provided by R. Salawitch using 1D-trajectory model).
