Abstract
Measurements of relative humidity, dry aerosol characteristics and the aerosol scattering coefficient in the visible were made in the marine boundary layer of the North Atlantic during a cruise of the USNS Hayes in Ma2-June 1977. An analysis of these measurements showed that fluctuations in the concentration of dry aerosol particles made a greater contribution to the variability of the scattering coefficient than did fluctuations in relative humidity. An aerosol growth curve was inferred from the variation in the scattering coefficient with relative humidity over a 2-h period during which the dry aerosol characteristics were quite constant This curve was found to be in reasonable agreement with the growth curves of large and giant marine aerosol particles obtained by Winkler (1977).
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