  The presence of small ions influences the growth dynamics of a size
distribution of aerosols. Specifically the often neglected mass of small ions
influences the aerosol growth rate, which may be important for terrestrial
cloud formation. To this end, we develop a numerical model to calculate the
growth of a species of aerosols in the presence of charge, which explicitly
includes terms for ion-condensation. It is shown that a positive contribution
to aerosol growth rate is obtained by increasing the ion-pair concentration
through this effect, consistent with recent experimental findings. The
ion-condensation effect is then compared to aerosol growth from charged aerosol
coagulation, which is seen to be independent of ion-pair concentration. The
model source code is made available through a public repository.
