a— KFLLOOGs (continued) wovld usually be rather small in the troposphere, and even saaller in the atratosphere—actually it would ve a thin ribbon cloud no wider than my stick. On 3 day when thero was strong convective activity stirring, the layer ecaupied by the cloud might go down to the ground by the end of the day. Then it would be a little bit thicker. I think this shows one things that is, if we sade « horisontal traverse through it, we would get a long slice this way, whereas a few traverses through it vertioslly would intersect the cloud and would also provide a three-dinensional picture. could he done either way. [I think it One aan visualise slicing through this way, with the line corresponding to an aireraft flicht; or slicing through it this way with oe balloon—dut © wanted te show this slide in order to show that one would not have to have a very dense network of balloons in order te intersect the part of the cloud. LIBBY: What experiment are you croposing? RELLOOGs This is an experiaent whieh would be presumsbly to follow the elouwd in three dimensions from the tine of burst. LIBBTs ave these balloons staked out, or do they go along with it? KELLOGGs Wo, these are sounding balloons in the sense ef « sounding being made from the ground upward, exastiy as the radio sounds which ara sent up tice a day all over tke world now. es ‘The idee DUE ARCHIVES