ESS5
Prof. Jin-Yi Yu
Riming and Aggregation
q Riming = liquid water freezing onto ice crystals  
                     producing rapid growth.
q Aggregation = the joining of multiple ice crystals
                              through the bonding of surface water
                              builds ice crystals to the point of          
                              overcoming updrafts
q Collision combined with riming and aggregation allow formation of precipitation within 1/2 hour of initial formation.