Word: jacob
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Dates: during 1990-1999
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Once he determined the validity of this model over the Arctic, Jacob tried to apply the model to the Pacific depletion, but with no success...
...explain the observed depletion by a simple mechanism, dependent on the square of the bromine concentration," Jacob says. "So a small fluctuation in the amount of bromine makes a big difference...
...Jacob is not discouraged. "We look for anomalies like this and try to explain them," Jacob says. "When you do, it is often indicative of a phenomenon on a larger scale...
...Jacob has some other ideas in the works to explain the situation in the tropics, including one which involves sea salt...
...Sodium chloride from sea spray releases chlorine which may go through a series of steps, similar to the steps of bromine, to deplete ozone," Jacob says. "It's all theoretical work here [at Harvard], but experimentalists at [the University of Virginia] and MIT have observed ozone-eating chlorine gases over the ocean...