; (e) Air routes throush Wake end Kwajalein: . favorable. (a) Surface routing inside 500 miles considered in its relation to all known transient shipping: favorCe Seientific (1) High altitude sampling operations - favor° favoredie. (2) Light transnission ‘for scientific experiments - 6. cqpcwstoss: et - We | Yalloutinfomationtron previous shots rereas be a ye \ . x4 ee The original source cannot be considered as a point or a relatively meal) area but mist be considered to be em area ct about a bundred eiles in diameter. Li also depesisa yield. @. This dieneter . The radioactivity of the debrtSs can de consifered ional to yield. Radioactive material in the Cloud was thus two to three tires was was expected. — @. An appreciable fraction of the observed fallout een only be accounted for by assuming thet it originated in . u the stratosphere. For such particles -to reach the ground at observed tines, their diameter must heve been in excess of 100 tunately, the veriecion wes is the wrong direction (See Figure S$). The sual) veriations observed at lower levels were also im an cafevoreble direction. evertheless, she accuracy of? the winds aloft forecest aprroached the lirits of accuracy of the wind odSesvVations themselves and were well within the norgeal forecest error. g- The fallout pettern extended from tne Bikini eest northeast. Considerable widening of the’ the Stoll to pattern took plece due to diffusion. The intensity of the 4 ---es ear vi TED ay aes° get ig ca ase seta Ets nation eneg re f. Forecast for shot tise winds at shot tine was essentielly correct. Variation rom. forecest trajectories was tely 20 desrees in significant urper levels; unfor=-