In what ways does man manipulate weather patterns?

Question

I'm thinking global warming might be one, but what are some more?

Answer 1

It is no wonder that many have come to believe that weather modification carried out by man is a subject and reality that belongs in the category of being science fiction. People have been led to believe by those who are in places of high power, especially those in the government and military, that weather modification is nothing more than the idea of those who have a creative and wild imagination and dwell on science fiction fantasy, and that weather modification cannot be done, or cannot happen.

Answer 2

Weather modification does happen.  My atmospheric science professor told us a little about it.  There are actually several courses at my university (University of North Dakota) about weather modification.  

One of the main manipulations in Cloud Seeding.  Airplanes dump particles into the weather system.  In order for clouds to form, water dropplets need some sort of particle to gather on.  By dumping these particles (I forgot what the scientists use) in the air, this gives water drops more particles to collect on.  The water will then condense to form a cloud.  Since there will be more clouds, there could be more rain.  So, they use Cloud Seeding to produce more rain in areas that need it.

Answer 3

global warming would be an after effect, not a manipulation