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Updated: Jul 12, 2026
11:34
Scattering And Absorption of Light in Planetary Regoliths
Published on: July 1, 2019
Summary
This study theoretically investigated Mars' upper atmosphere, finding exospheric temperatures between 400-700 K for a carbon dioxide model. These results offer insights into the origin of the Martian atmosphere.
Area of Science:
- Planetary Science
- Atmospheric Physics
- Aerospace Engineering
Background:
- The upper atmosphere of Mars is crucial for understanding planetary evolution and atmospheric escape.
- Previous models have provided varying thermal profiles, necessitating further theoretical investigation.
Purpose of the Study:
- To theoretically investigate the thermal structure of Mars' upper atmosphere.
- To determine the exospheric temperature range for a pure carbon dioxide (CO2) atmosphere.
- To discuss the implications of these findings for the origin of the Martian atmosphere.
Main Methods:
- Theoretical modeling of a pure CO2 atmosphere.
- Analysis of thermal profiles in the upper atmospheric layers.
Main Results:
- The exospheric temperature was calculated to be between 400 and 700 Kelvin (K).
- The thermal structure is consistent with a CO2-dominated upper atmosphere.
Conclusions:
- The determined exospheric temperature provides a key parameter for atmospheric models of Mars.
- The findings contribute to the ongoing discussion regarding the formation and evolution of the Martian atmosphere.
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