Weather modification network

A weather modification network (or weather control system) is a technological system created to alter the weather patterns of a planet.

Risa has used such a system since at least the 22nd century to create a more pleasant tropical climate. 

In 2364, worked on creating satellites to form a weather control system for the planet  in conflict with the Prime Directive. The system was destroyed by Jonathan Masters when he destroyed Dirit's lab to prevent the technology from been used by the pre-warp civilisation as well as to cover their extraction of Dirit from the planet.