Abstract: Airborne measurements at flight level of cloud nuclei have been carried out during approximately 100,000mi of flight over wide areas of the world. A thermal diffusion chamber was used to obtain cloud-nucleispectra which ...

Abstract: Limitations on the accuracy of CCN counts obtained with thermal gradient diffusion cloud chambers (TGDCC) are discussed. Evidence presented here regarding 1) the absence of a well-defined plateau when the number of CCN in ...

Abstract: No abstract available.

Abstract: A number of careful laboratory comparisons were made between two very different CCN counters. The two instruments gave consistent results which were within about 20% on the average.

Abstract: Polydisperse NACl and (NH4)2SO4 salt particles were passed through a Goetz centrifuge, which transmitted only those particles smaller than the cutoff size of the centrifuge. In one set of experiments the sample from the ...

Abstract: Measurements of the concentration of cloud nuclei, which are activated at a supersaturation of 0.75%, were made aboard an aircraft at various altitudes in a subsident air mass over the North Atlantic Ocean and on the cast ...