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<br />J <br /> <br />~ <br /> <br />:J <br /> <br />.. <br /> <br />WESTERN WEATHER CONSULTANTS. INC <br /> <br />(Exampl~ for Formu13: Cloud characteristics from rawinsonde as observed <br />depth = 4800 it, ;cluud base water = 3.7; post-trough cloud top tempera- <br />ture is - 20oc; south sector locatioll) <br /> <br />Seeding Rate = (4.8 - 1.9) x (3.7 - 1.6) x (18 - 0201- 12]) <br />x 10 = 60.9 <br /> <br />2.9 x 2.1 <br /> <br />Then use the following table: <br /> <br />Calculated Value <br /> <br />12 <br /> <br />60 <br /> <br />240 <br /> <br />480 <br /> <br />1200 <br /> <br />120 <br /> <br />30 <br /> <br />S"ed Rat~ gm/hr <br /> <br />40 <br /> <br />80 <br /> <br />200 <br /> <br />10 <br /> <br />20 <br /> <br />2 <br /> <br />5 <br /> <br />(Fur example the seed rate would be 10 gm/hr) <br /> <br />SEEIn:1~ COH?T_:TATIONS <br /> <br />Pre Trough <br /> <br />(Cloud Depth*) <br />( ".. 1.9) x <br /> <br />x (CB\;*) x (T500) <br />(CBH- 1.6) x (,27 <br /> <br />-IT500 I ) <br /> <br />Pest Trough (Cloud Depthlj) x (CB~) x (Tet) <br /> <br />( <br />( <br /> <br />H.. 1.9) x (CB~.. 1.6) x (30 -ITctl ) <br />if - 1.9) x (CBI;.. 1.6) x (27 -ITct I) <br /> <br />for South Sector <br />for North Sector <br /> <br />* Cloud Depth - Actual top of cloud height 0t 18,000 ft. which ever is less <br />minus (-) Cloud Base. If sounding saturated to base as taken <br />in pre~ipitation. take 2000 ft. above surface as cloud base <br />level. Then subtract constant of 1.9k from this value for <br />final cloud depth. <br /> <br /># Cloud Depth - Actual cloud top height minus (-) cloud base. If sounding <br />saturated to bas2 as taken in precipitation. take 2000 ft. <br />abo7e surface level as cloud base level. Subt~act constant <br />af 1.9k frc~ this value for final cloud depth. <br /> <br />* CBI; <br /> <br />Taken at actu~l level cf cloud base except when saturated to <br />sL.:.t"tace, the-s. take eBI'; at 2000 ft. above surface. <br /> <br />r.~~'::' <br />