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Updated: Jul 12, 2026

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In situ FTIR Spectroscopy as a Tool for Investigation of Gas/Solid Interaction: Water-Enhanced CO2 Adsorption in UiO-66 Metal-Organic Framework
Published on: February 1, 2020
Evidence for solid carbon dioxide in the upper atmosphere of Mars
Summary
Infrared spectra from Mariner 6 and 7 missions detected 4.3-micron reflections. These findings suggest the presence of solid carbon dioxide in Mars' upper atmosphere.
Area of Science:
- Planetary Science
- Atmospheric Science
- Spectroscopy
Background:
- Understanding the composition of planetary atmospheres is crucial for assessing habitability.
- Previous atmospheric studies of Mars have utilized various remote sensing techniques.
Purpose of the Study:
- To analyze infrared spectral data from the Mariner 6 and 7 missions.
- To investigate the composition of the Martian upper atmosphere.
Main Methods:
- Recording and analyzing infrared spectra.
- Identifying spectral signatures indicative of specific atmospheric components.
Main Results:
- Detection of distinct reflections at 4.3 microns in the infrared spectra.
- Correlation of the 4.3-micron reflection with the known spectral signature of solid carbon dioxide.
Conclusions:
- The presence of solid carbon dioxide (CO2) is strongly suggested in the upper atmosphere of Mars.
- These findings contribute to our understanding of Martian atmospheric dynamics and composition.
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