Fic. 8—Selected frames from Flight I; camera aimed south from 8000 ft altitude; (a) frame just to 
east of wave trough, in active convection zone, Leg 1; (b) frame just to west of wave trough, Leg 1; 
cloud line same as that just to west of trough in Fig. 5; after the third of these, conditions became com- 
pletely suppressed; (c) wave trough convection zone on following day after wave has passed under upper 
cold low; the second encounter of the aircraft with the wave took place 200 miles west of Kwajalein, 
on Leg 2; note contrast in clouds as compared with (a) and (b) 
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