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<br />Cloud seeding <br /> <br />The Alberta Research Council con- <br />ducts routine cloud seeding opera- <br />tions in the southern half ollhe <br />central Alberta experimental region. <br />Researchers use lour aircraft <br />leased trom an Alberta firm to seed <br />all potential hailstorms during the <br />operations period of June 20 to <br />August 31. Each aircraft is equipped <br />with a rack lor ejecting 400 'pencil' <br />lIares, containing the artificial ice <br />nucleating particles, into Ihe clouds <br />from above. II also has either two <br />acelone burners or two wing- <br />mounted racks with 32 large flares <br />lor cloud base seeding. <br /> <br /> <br />One cloud seeding method being <br />tested is the '8/saSB, at the base 01 <br />clouds. of silver iodide ice nucleating <br />particles from flares attached to air. <br />craft wings. <br /> <br /> <br />I <br />I <br /> <br />( \ <br />~' <br /> <br />. <br /> <br />, <br /> <br />~---- <br />L ;-'- <br /> <br />- <br />- <br /> <br />~ <br /> <br />: <br /> <br />" <br /> <br />Cloud seeding for hail suppression <br />10k _500 <br /> <br /> <br />,,"" <br /> <br />Cloud seeding is <br />done either at the <br />base of clouds so <br />that updrafts, in- <br />dicated by the large <br />arrows, carry the <br />seeding particles into <br />the clouds. or from <br />above clouds. where <br />silver iodide flares <br />are dropped into the <br />clouds towers. <br /> <br />-30" <br /> <br />_200 <br /> <br />'00 <br /> <br />~'ngC.U"IIIlO" <br />Main tIu,.,.,.I..,nl,lt,o""l <br />Upclr.tt . $om. mel1la ,.,n <br />