The roles of particle precipitation and Joule heating in the energy balance of the Jovian thermosphere |
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| Authors: | MG Heaps |
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| Institution: | Department of Physics and Astronomy, University of Florida, Gainesville, Florida, 32611, USA |
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| Abstract: | Order of magnitude calculations have been carried out to compare particle precipitation and Joule heating with solar radiation as sources of energy in the Jovian thermosphere. Calculations based on a detailed atomic cross section approach to energy deposition show that the efficiency of conversion of energetic particle precipitation energy into thermal energy is 0.33, larger than on Earth. This emphasizes the role of particle precipitation heating, which may serve as a source for gravity waves. In contrast to the terrestrial case, Joule heating is found to be of only minor significance in the Jovian atmosphere. |
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