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Science 8 June 1973:
Vol. 180. no. 4090, pp. 1057 - 1058
DOI: 10.1126/science.180.4090.1057
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Articles

Ice Nucleation: Elemental Identification of Particles in Snow Crystals

Farn P. Parungo 1 and Rudolf F. Pueschel 1

1 Atmospheric Physics and Chemistry Laboratory, National Oceanic and Atmospheric Administration, Environmental Research Laboratories, Boulder, Colorado 80302

A scanning field-emission electron microscope combined with an x-ray analyzer is used to locate the ice nucleus within a three-dimensional image of a snow crystal and determine the chemical composition of the nucleus. This makes it possible to better understand the effect of nuclei in cloud seeding.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)