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Earth, Planets and Space
Fig. 10. | Earth, Planets and Space

Fig. 10.

From: Variability of solar/stellar activity and magnetic field and its influence on planetary atmosphere evolution

Fig. 10.

Thermospheric temperature profiles for present day Mars between 100 km and the corresponding exobase levels for present time solar EUV flux values (1) (Fox and Hac, 2009) and the martian thermosphere when it is exposed to a 20 times higher EUV flux (~4 Gyr ago according to Tian et al. (2009)). The thermosphere temperature reaches ~3000 K and expands dynamically upward to distances of about 3 planetary radii.

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