WMOD00518

• Project Name: Project Skywater
• Title: Cloud Seeding Principles and Techniques
• Date: 1/1/1971
• Weather Modification - Doc Type: Report

,

NATURALi MOUNTAIN CLOUD
(Top temperature colder
than '-gO F)

~

Air Flow I
"

SEEDED MOUNTAIN CLOUD
(Top temp,rature colder
than -gO F)

SNOW CRYSTALS ARE TOO
~. *;v.1->- _, SMALL TO FALL OUT AND
;t ~ * ;j( of ;; .;': ;,~.... .THEREFORE EVAPORATE
d~*,;\(.t-;>< ";:"\'t..~ ..... DOWNWIND
. "'~~. * ~Hof' .';: ~~ EVAPORATION
~ * -* *'Ai,:r ",'t.*'*:,: ......... REGION
. O:/, :\' ~;K't-T, *- .'
Air Flow' /".;'.~~~. \~~*,Ic:J.<.' 'i<-~:. '~
,~ -.:-:. '" i< "'" 0", . " -J<. "- :.......-

_ -?O!dd. < . _ _ ~~_~ _

-, -~
SILVER IODIDE
GEN ERATOR:
Seeding very cold clouds produces excessive snow crysta Is , which
compete for ova i lob Ie moistu reo This limits thei r size wh ic h
prevents them from fa II i ng to the grou nd.