Abstract
Abstract The physical and chemical characteristics of atmospheric aerosol were determined at a site remote from anthropogenic influences, on the edge of the Antarctic continent. The number concentration (0.12–3.12 μm diameter) ranged between 9 and 90 cm −3 and the corresponding mass between 0.1 and 3.7 μg m −3 . The concentration of sulphate in two filter samples was 0.29 and 0.48 μg m −3 . Size distributions at the site were remarkably invariant. The two major factors affecting the size distribution and concentration were occurrence of precipitation and atmospheric stability, respectively. Modes in the volume distribution occurred at about 0.2 and 2.0 μm diameter. The smallest particles
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