(b) What year does CFC_trop peak? CFC_strat peak? And O3_strat reach a minimum?
(b) What year does CFC_trop peak? CFC_strat peak? And O3_strat reach a minimum?
(c) What is the maximum ozone depletion relative to a CFC-free atmosphere (give your answer in %)
(d) Suppose that we wanted to keep ozone depletion to 5% or less. What value of O3_strat does this correspond to? And how many years after starting production would we have had to realize our mistake, trusted the science and acted to phaseout all CFCs?
(e) How long would it take since starting to emit CFCs for the ozone to recover to the 99% level?
