Texas A&M University (TAMU) ATMO201 Weather and Climate Exam 2 Practice

Aggregation in the context of ice particles in clouds refers to the process where individual ice crystals collide and stick together to form larger ice particles. This process is crucial in the development of precipitation within clouds. When ice crystals aggregate, they can effectively increase in size, which makes it more likely for these particles to fall to the ground as snow or other forms of precipitation like sleet or hail.

This is particularly important in clouds where temperatures are at or below freezing, as the ability of ice particles to grow larger through aggregation influences weather patterns and precipitation types. Larger ice particles have a greater mass and can overcome the upward drafts present in the cloud, allowing them to eventually descend through the atmosphere.

While other processes like melting or breaking apart can occur under different conditions, aggregation specifically enhances the growth of ice particles by allowing them to combine, thus directly influencing the cloud's precipitation potential.