Simulations with the ucl mars thermospheric gcm: comparisons with existing data

Mathematics

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Scientific paper

The UCL Mars thermosphere model numerically solves the equations for energy, momentum and continuity in three dimensions. The latitude, longitude and height resolution is variable and for current runs is set at: 12 degrees latitude, 6 degrees longitude and 0.5 scale height. A pressure level height system is used to simplify the mathematics, with the lower boundary fixed at 0.883pa (~60km) - the level at which dust effects are thought to be negligible, with the upper boundary around 300km. The solar heating scheme allows for absorption in the EUV ( 2-1775 angstroms) and IR (4.3-2.7mm) regimes. The main cooling effects are vertical conduction and IR cooling (15mm). The simulations shown demonstrate basic model runs for the same conditions as existing probe data. Comparisons are made and conclusions drawn about the effectiveness of the model and areas for further work highlighted.

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