  The secondary activation of aerosols impacts the life cycle of a cloud. A
detailed understanding is necessary for reliable climate prediction. Recent
laboratory experiments demonstrate that aerosols can be activated in the wake
of precipitating hydrometeors. However, many quantitative aspects of this
wake-induced activation remain unclear. Here, we report a detailed numerical
investigation of the activation potential of wake-induced supersaturation. By
Lagrangian tracking of aerosols we show that a significant fraction of aerosols
are activated in the supersaturated wake. These 'lucky aerosols' are entrained
in the wake's vortices and reside in the supersaturated environment
sufficiently long to be activated. Our analyses show that wake-induced
activation can contribute at a level similar to other well known secondary
production processes.
