Abstract: An instrument for measuring the concentrations of cloud condensation nuclei as a function of nucleus critical supersaturation (Se) is described. In the range 0.1% ≤ Se ≤ 1%, the instrument is operated as a vertical flow ...

Abstract: Concentrations of cloud condensation nuclei in the atmosphere were measured at Rolla, Missouri, near ground level. A total of 432 spectra were measured over a 10-month period. The average concentration (N) of nuclei active ...

Abstract: The relation between dry diameter (X0) and critical supersaturation (Sc) for atmospheric submicron aerosol particles is investigated using a long term air sampling program at Rolla, Missouri. The particles are passed through ...