Air temperature is decreased as a result of increasing amounts in evaporation from cloud and rain water, melting and evaporation from graupel and sublimation from cloud ice by seeding.

• 催化使得云中冰晶、霰和雨水的含量增加，造成云雨蒸发、霰的融化（蒸发）及冰晶升华量增加，从而使空气温度降低。