Figure from Chlorine-containing gases in Antarctica

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Figure 1. A . The distribution of chlorine in the gas phase in Antarctica. About two-thirds is from the manmade chlorofluorocarbons and at least half of the "reactive chlorine" group are also from human activities. The graph shows the concentration as the percent of chlorine contributed by each gas to the total chlorine composition of the antarctic atmosphere (see text). B . The reactive chlorine gases in the antarctic atmosphere. All known natural emissions of chlorine-containing gases are from this group.