Cover: Introductory Comments on Venus's Lower Atmosphere.

Introductory Comments on Venus's Lower Atmosphere.

Published 1967

by Diran Deirmendjian

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This paper points out the difficulties in distinguishing between an upper and lower Venusian atmosphere and notes the lack of basic data on surface pressure and temperature, temperature gradients, gaseous and particulate composition, large- and small-scale air motion, and the nature of the planet's surface at the bottom of the atmosphere. The wide variation of recent surface pressure estimates, ranging between 3 and 1000 atmospheres, is displayed graphically. The paper was prepared for presentation at the Conference on the Atmospheres of Mars and Venus, Tucson, Arizona, Feburary 28, 1967. 9 pp.

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