Radiative Cooling Estimate for Buoyant Thermals

S. C. Traugott Research Institute for Advanced Studies, Marlin Marietta Corporation, Ballimore, Md. 21227

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Abstract

The influence of longwave radiation on a single, isolated buoyant thermal is assessed. Separate, uncoupled estimates are made for characteristic convective and radiative cooling rates as a function of thermal size, both for condensed and uncondensed conditions. Application is made to the lower terrestrial troposphere, to a region near the Venus cloud tops, and to the upper troposphere of Mars.

Abstract

The influence of longwave radiation on a single, isolated buoyant thermal is assessed. Separate, uncoupled estimates are made for characteristic convective and radiative cooling rates as a function of thermal size, both for condensed and uncondensed conditions. Application is made to the lower terrestrial troposphere, to a region near the Venus cloud tops, and to the upper troposphere of Mars.

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