Warm Cloud Precipitation
As cloud droplet
ascends, it grows larger by collision-coalescence
Cloud droplet reaches the height where the updraft speed equals terminal fall speed
As drop falls, it grows by collision-coalescence to size of a large raindrop
Cloud droplet reaches the height where the updraft speed equals terminal fall speed
As drop falls, it grows by collision-coalescence to size of a large raindrop
Ahrens, Fig. 5.16
Updraft (5 m/s)
Terminal Fall Speed (5 m/s)
