Reports

Dust in the Lower Atmosphere of Venus

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Science  17 Jan 1969:
Vol. 163, Issue 3864, pp. 275-276
DOI: 10.1126/science.163.3864.275

Abstract

Terminal velocities of dust particles have been calculated for two model atmospheres of Venus; data are derived from measurements of Mariner V and Venera 4. The vertical wind velocities required to maintain dust aloft in the lower atmosphere of Venus are less than one-half the magnitude of those needed on Earth. Since the lower atmosphere of Venus appears to be hot, dry, and strongly convective, it probably contains much more dust than that of Earth.