ESS5
Prof. Jin-Yi Yu
qThe
objective is to convert some of the supercooled droplets in a cool clouds to ice and cause precipitation by the Bergeron process.
qTwo
primary methods are used to trigger the precipitation process.
qDry ice is used to lower cloud
temperature to a freezing point in order to
stimulate ice crystal production leading to the Bergeron process.
qSilver iodide initiates the Bergeron
process by directly acting as freezing
nuclei.
qUnder
ideal conditions, seeding may enhance precipitation by about 10%.
Cloud Seeding