Weird Impulse Generated Weather - Dream on Dec. 23, 2009

I just had a dream where there was a discovery of a suspiscious pattern of bare patches in an area on earth in some foreign country. This area revealed some impulse generating (microwave?) machines that were capable of altering weather patterns. So, for example, if there was a lot of radiation in the air due to a nuclear explosion this machinery could make it snow. The snow captures the air born radiation and makes it fall to earth. The air born radiation would not contaminate the whole world since it was captured by the snow. Where and when this machinery was discovered I have no idea. Pretty weird dream though! Very clear and disturbing.