The terrestrial hydrogen problem |
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Authors: | A Vidal-Madjar GE Thomas |
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Institution: | Laboratoire de Physique Stellaire et Planetaire, Centre National de la Recherche Scientifique, Boite Postale 10, 91370 Verrières-le-Buisson, France;Department of Astro-Geophysics, Laboratory for Atmospheric and Space Physics, University of Colorado, Boulder, CO 80309, U.S.A. |
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Abstract: | Current theoretical models do not satisfactorily explain observed variations of the global exospheric atomic hydrogen density distribution. Differences between the mesospheric upward flux and the Jeans escape mechanism indicate that other escape fluxes affect hydrogen density. Observations of latitudinal depletions and an early morning trough in the exosphere can be attributed to the influence of additional escape mechanisms. These variations of the exospheric hydrogen density distribution seem to be correlated with other observed variations in the atmosphere; however, no straightforward explanation has been proposed to date. |
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