LERg (contimed) place from the fact that temperatures at the ground drop] dows well below the levels they're supposed to drop down if the air stays the sane and if the alr was ocoled by evaporation — falling rain. Welly but suppose, on the other hand, you did not get a coincidence of the high counts vith the high IS Then that would eliminate the rain as a possible factor and you'd have to look for other mechanisns net ops nected with rain. Well, then I would invoke, first of large mass movenents of alr vertically on isentropic sw You may not have to go through a detafled isentropic Lene en , you may just make use of general meteorological considergtions of descending air connected with anticyclones and things like that. In that way I'd try to interpose possible chan! gas» depending upon hov the date in eech particular case seen] to agree both metecrologieally and radicestively, Tealdin the... interpretation and to aid in putting forth reasonable anisms, i thoroughly agree, Will, that it’s just en inpe a! to have vertionl traverses aa horisontel traverses, we're now getting, The vertical traverses are necessary bot - I don't think that thay'l) ever give the fine detail tha ts covered by the wordla"the three dimensionel picture of clpud.® I think 17 will just be an extra bit of informetion te} lp us decide whether ft was possible for this cloud ~ radioactive cloud ~ to have been caught in the rain area or not, and ~ Rhings | like thats I don't think it will throw any Might quntithtively that will inprove cur understanding of vertical ¢ , a3