Gravity Wave Drag in a Global Circulation Model of the Martian Atmosphere: Parametrisation and Validation
نویسنده
چکیده
The eeect of orographically generated breaking gravity waves is parametrised in a global circulation model of the Martian atmosphere using schemes adapted from terrestrial models. The schemes arètuned' by comparing model integrations with and without gravity wave drag with temperatures derived from the Mariner 9 IRIS instrument. Without gravity wave drag the global circulation model temperature eld has excessively cold upper level polar regions. Gravity wave drag can correct for such cold temperatures by warming the atmosphere adiabatically via a dynamically induced circulation. The model climatology is signiicantly improved in the polar regions with the introduction of the parametrisation.
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