The top of China ’s “ skirt ’s nest ” Olympic stadium is open to the elements , and therefore the authorities has ordered the Beijing Meteorological Bureau to verify it wo n’t rain down during the game . The Bureau has already had some success forbid faint rain , but lowering rainwater is harder to control . They ’ll use two different “ seeding ” proficiency for dissipating droplets in frozen clouds , and dissipate warmer clouds before they start forming piddle droplet . Beijing ’s point of atmospheric condition handling , Zhang Qian , explains how .
She say :
For inhuman clouds below zero degrees , we use a coolant made from liquid nitrogen to increase the identification number of droplets while minify their mean size . As a issue , the smaller droplet are less probable to come down and downfall can be abridge . For clouds above zero degree we use the seeding agent silver iodide to speed up the droplets ’ collision and conglutination , bring forth a downdraft which suppress the formation of clouds .
China ‘ will block the rain’[News.com via Slashdot ]
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