Agitation
Utilizing hygroscopic chemicals, it stimulates a mass of air to rise higher to create humidity. This helps nature to form rain clouds, and it increases the potential amount of rainfall.
Fattening
Fattening of the rain clouds is done by scattering exothermic-hygroscopic chemicals to make droplets of water condense.
Attacking
Fly a plane through the heavy clouds to accelerate the process of raindrop formation.