at least, sad aseuming equivalent winds, the high yield water surface shote ROMEO, GTO amct YANKER could have been detonated in the IVY MIZE crater os ENIMETOE Ment. . (2) Wind Pattern Criterts (a) As a general cule, the winds in the M.RSHLL Lelands were east northeasterly to easterly in the Lower, or tradeewind levels (up to about 20,000 feet) and casterlyin the high levels (above tropopause height or at, and abowe, about 60,000 fect). The mit-levels between were not only variable, but involved the acet aimificant portion of the clow! from a fali~ ow viewpoint. (%) Use of two shot atolls imposed further restrictime on shooting due to the effect ofashct at one atoll oa the ropulated areas of the other, -@) |The primary Land maares tavelved in determining ths relative fsvorability of wind pattems were the two ahot atolls, UWEENG southwest of ENTNETAK, and the MARSHALL Ielende in the southeast, quadrant. (4) Wind pettems acceptable at BIKINE were acceptable st ENTVETOK. The converse was not always tree. (0) for BoKTNE edots, mid-level idinds from southeast élockn wise to couthwest vere favorable for al} types of shots; ‘gidqlevel winds from east southeast sjosindse to wegt southwest were acceptable fcr water surface shots. The more scutherly the components in these levels, the more favcrabls the pattern became. (2) For ENTWSIOK sbote, mid-level winds from east north= east cloekwise to west southwest were favorable for all types of shots; nid- level winds froa approximately northeast elockeise to west southwest were 93 a