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Mars Upper Atmosphere Study from Mars Global Surveyor Aerobraking Data

Explore findings from Mars Global Surveyor's aerobraking in 1999 revealing details about Martian upper atmosphere. Discover density, temperature at 130 km, thermosphere circulation, and more. Points to note include unexpected surface effects and challenges in modeling polar night.

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Mars Upper Atmosphere Study from Mars Global Surveyor Aerobraking Data

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  1. The Martian Upper Atmosphere as Revealed by Mars Global Surveyor’s AerobrakingPaul Withers & Steve Bougher LPLC II 19 May 1999

  2. Data and Predictions • Density, density scale height & temperature at 130 km (in & out) and periapsis (100-110 km) • Mars Thermosphere Global Circulation Model predicts mean atmospheric behaviour • Predictions cover ~ 1 month

  3. Points to remember • Unexpected stationary longitudinal variations mean surface effects propagating up over 100km • Mid-latitude models useful • Polar night badly modelled

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