Abstract: A first attempt at surveying the complete size distribution of natural aerosol particles is made. The size range covers more than three orders of magnitude in radius, with approximate limits of 2 ? 10?3 and 5 ? 10?7 cm. ...

Abstract: New data concerning the chemical composition of atmospheric aerosol particles in two radial size-ranges, 0.08 < r < 0.8 µ and 0.8 < r < 8 µ, were obtained during a four-week period on the Atlantic coast. The samples were ...

Abstract: A total of seven vertical profiles of Aitken nuclei in the upper troposphere and stratosphere are discussed. Average values are presented and compared with tropospheric data by other authors. The main features of the ...

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Abstract: Cloud nuclei spectra have been calculated as a function of aerosol size distribution and soluble salt content. Size distribution of the nucleating aerosol is shown to be the most important factor in determining the cloud ...

Abstract: The vertical distribution of stratospheric particles with an average radius of 0.15 micron is presented in the form of five vertical profiles. These show a broad maximum in numerical concentration between 15 and 23 km, and ...

Abstract: The distribution of yearly averages of the concentration of various inorganic ions in rain water over the United States is discussed. The major source of Cl?is the ocean. The Cl?/Na+ ratio, however, is considerably less ...

Abstract: An aircraft-borne impactor-filter system for the collection of tropospheric aerosols of natural and fission-product origin is described. The system has been used in studies of the size distribution of atmospheric particles ...

Abstract: A first report is presented on a comprehensive study of stratospheric aerosols up to 30 km altitude. Information was obtained on the vertical profiles as a function of particle size, on the size distribution of these ...