Geo Engineering vocab & Kafka Winston World SCORE “Hygroscopic cloud seeding”

Geo Engineering vocab & Kafka Winston World SCORE “Hygroscopic cloud seeding”
The technical term for this device is a Hygroscopic cloud seeder:

You can see them in action here:

You can read about it:
http://journals.ametsoc.org/doi/abs/10.1175/2010JAMC2307.1
https://www.google.com/search?q=hygroscopic+cloud+seeders&ie=utf-8&oe=utf-8