Abstract
THE optical properties of the non-cloudy atmosphere are determined by a fixed component, the molecular gases, and a variable component, the aerosol particles. The optical effects of these two components have been subject to speculation and scientific investigation for many years. The major features of molecular and particle optics are reasonably well understood1–3 and instrumental techniques have been developed to measure extinction of light4, scattering phase function5,6 and the scattering component of extinction7. Few data or analyses have, however, been presented which consider the chemical nature of the aerosol in terms of its effects on radiative properties, although a few exceptions can be cited8–12. Experimental evidence quantitatively linking the chemical composition of aerosol particles with the macroscopic optical consequences is sparse, but here we mention one approach relating chemical and optical measurements on regional scale air masses and present preliminary data.
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WAGGONER, A., VANDERPOL, A., CHARLSON, R. et al. Sulphate–light scattering ratio as an index of the role of sulphur in tropospheric optics. Nature 261, 120–122 (1976). https://doi.org/10.1038/261120a0
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DOI: https://doi.org/10.1038/261120a0
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