The importance of deep convection in atmospheric
chemistry was first suggested by Crutzen
and coworkers (Gidel 1983; Crutzen and Gidel
1983; Chatfield and Crutzen 1984; Chatfield and
Delany 1990). Deep convection can remove pollutants
from the lower atmosphere and inject them
rapidly into the middle and upper troposphere and,
occasionally, into the stratosphere. Tropopause