Thermal balance of the atmospheres of Jupiter and Uranus

Details Thermal balance of the atmospheres of Jupiter and Uranus Thermal balance of the atmospheres of Jupiter and Uranus

Oct 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986joat.conf...34f&link_type=abstract

In NASA. Goddard Inst. for Space Studies The Jovian Atmospheres p 34-40 (SEE N87-17598 09-91)

Computer Science

Atmospheric Models, Heat Flux, Jupiter Atmosphere, Temperature Distribution, Thermodynamic Equilibrium, Uranus Atmosphere, Atmospheric Pressure, Baroclinic Instability, Latitude, Meridional Flow, Mixing Length Flow Theory, Thermal Emission

Scientific paper

Two-dimensional, radiative-convective-dynamical models of the visible atmospheres of Jupiter and Uranus are presented. Zonally-averaged temperatures and heat fluxes are calculated numerically as functions of pressure and latitude. In addition to radiative heat fluxes, the dynamical heat flux due to large-scale baroclinic eddies is included and is parametrized using a mixing length theory which gives heat fluxes similar to those of Stone. The results for Jupiter indicate that the internal heat flow is non-uniform in latitude and nearly balances the net radiative flux leaving the atmosphere. The thermal emission is found to be uniform in latitude in agreement with Pioneer and Voyager observations. Baroclinic eddies are calculated to transport only a small amount of the meridional heat flow necessary to account for the uniformity of thermal emission with latitude. The bulk of the meridional heat transfer is found to occur very deep in the stable interior of Jupiter as originally proposed by Ingersoll and Porco. The relative importance of baroclinic eddies vs. internal heat flow in the thermal balance of Uranus depends on the ratio of emitted thermal power to absorbed solar power. The thermal balance of Uranus is compared to that of Jupiter for different values of this ratio.

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