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Composition and structure of Mars' Upper atmosphere: Results from the neutral mass spectrometers on Viking 1 and 2
Abstract
The upper atmospheric mass spectrometers flown on Viking 1 and 2 are described, and results obtained for the composition and structure of Mars' upper atmosphere are summarized. Carbon dioxide is the major constituent of the atmosphere at all heights below 180 km. The thermal structure of the upper atmosphere is complex and variable with average temperatures below 200°K for both Viking 1 and 2. The atmosphere is mixed to heights in excess of 120 km. The isotopic composition of carbon and oxygen in the Martian atmosphere is similar to that in the terrestrial atmosphere: 15N is enriched in Mars' atmosphere by a factor of 1.62±0.16.
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Cited by
The Mars Pathfinder Atmospheric Structure Investigation/Meteorology (ASI/MET) Experiment
Schofield, J. T., Barnes, J. R., Crisp, D., Haberle, R. M., Larsen, S., Magalhães, J. A., Murphy, J. R., Seiff, A., & Wilson, G. (1997) · Science · doi:10.1126/science.278.5344.1752 · Cited by 462
Stern, J. C., Sutter, B., Freissinet, C., Navarro-González, R., McKay, C. P., Archer, P. D., Buch, A., Brunner, A. E., Coll, P., Eigenbrode, J. L., et al. (2015) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.1420932112 · Cited by 225
The history of Martian volatiles
Jakosky, B. M., & Jones, J. H. (1997) · Reviews of Geophysics · doi:10.1029/96rg02903 · Cited by 144
Kulikov, Y. N., Lammer, H., Lichtenegger, H. I. M., Penz, T., Breuer, D., Spohn, T., Lundin, R., & Biernat, H. K. (2007) · Space Science Reviews · doi:10.1007/s11214-007-9192-4 · Cited by 139
Metadata
- Authors
- Nier, A. O., & McElroy, M. B.
- Venue
- Journal of Geophysical Research
- Publisher
- American Geophysical Union (AGU)
- Published
- 1977-09-30
- Volume
- 82
- Issue
- 28
- Pages
- 4341-4349
- ISSN
- 0148-0227 (ISSN-L)
- OpenAlex
- W1982124339
- Cited by
- 508
- References
- 0
- FWCI
- 18.69
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: Composition and structure of Mars' Upper atmosphere: Results from the neutral mass spectrometers on Viking 1 and 2. https://app.cochat.ai/papers/10.1029/js082i028p04341
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- Nier, A. O., & McElroy, M. B. (1977). Composition and structure of Mars' Upper atmosphere: Results from the neutral mass spectrometers on Viking 1 and 2. Journal of Geophysical Research. https://doi.org/10.1029/js082i028p04341
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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