0 the act of spreading substances such as certain chemicals in clouds, in order to try to make them produce rain, or more rain: --
For cloud seeding to be successful, clouds must contain supercooled water - water that has remained liquid at below-freezing temperatures.
Cloud seeding and other forms of weather modification are being given serious consideration.
Much of the effort centers on cloud seeding, in which ice crystals are added to clouds so that more moisture is released as rain.
Many researchers remain unconvinced that cloud seeding has been conclusively shown to produce a major boost in rainfall.
