Hot carbon densities in the exosphere of Mars

Andrew F. Nagy, Michael W. Liemohn, J. L. Fox, Jhoon Kim

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

Theoretical results of hot carbon densities in the exosphere of Mars are presented. The calculation is a two-step process: First a two-stream transport code is used to solve for the distribution function at the exobase, and then these results are used in a Liouville equation solution above the exobase. It is found that photodissociation of carbon monoxide is the largest source of hot carbon atoms in the upper atmosphere of Mars, larger than dissociative recombination of CO+ and much larger than the creation of hot carbon through collisions with hot oxygen atoms. It is also found that the high solar activity densities are about an order of magnitude larger than those for the low solar activity case.

Original languageEnglish
Article number2001JA000007
Pages (from-to)21565-21568
Number of pages4
JournalJournal of Geophysical Research: Space Physics
Volume106
Issue numberA10
Publication statusPublished - 2001 Oct 1

Fingerprint

exosphere
mars
Mars
Carbon
Carbon Monoxide
solar activity
carbon
Liouville equation
hot atoms
Photodissociation
Atoms
Upper atmosphere
Liouville equations
carbon monoxide
photolysis
upper atmosphere
photodissociation
recombination
Distribution functions
oxygen atoms

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Forestry
  • Oceanography
  • Aquatic Science
  • Ecology
  • Water Science and Technology
  • Soil Science
  • Geochemistry and Petrology
  • Earth-Surface Processes
  • Atmospheric Science
  • Earth and Planetary Sciences (miscellaneous)
  • Space and Planetary Science
  • Palaeontology

Cite this

Nagy, A. F., Liemohn, M. W., Fox, J. L., & Kim, J. (2001). Hot carbon densities in the exosphere of Mars. Journal of Geophysical Research: Space Physics, 106(A10), 21565-21568. [2001JA000007].
Nagy, Andrew F. ; Liemohn, Michael W. ; Fox, J. L. ; Kim, Jhoon. / Hot carbon densities in the exosphere of Mars. In: Journal of Geophysical Research: Space Physics. 2001 ; Vol. 106, No. A10. pp. 21565-21568.
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Nagy, AF, Liemohn, MW, Fox, JL & Kim, J 2001, 'Hot carbon densities in the exosphere of Mars', Journal of Geophysical Research: Space Physics, vol. 106, no. A10, 2001JA000007, pp. 21565-21568.

Hot carbon densities in the exosphere of Mars. / Nagy, Andrew F.; Liemohn, Michael W.; Fox, J. L.; Kim, Jhoon.

In: Journal of Geophysical Research: Space Physics, Vol. 106, No. A10, 2001JA000007, 01.10.2001, p. 21565-21568.

Research output: Contribution to journalArticle

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AB - Theoretical results of hot carbon densities in the exosphere of Mars are presented. The calculation is a two-step process: First a two-stream transport code is used to solve for the distribution function at the exobase, and then these results are used in a Liouville equation solution above the exobase. It is found that photodissociation of carbon monoxide is the largest source of hot carbon atoms in the upper atmosphere of Mars, larger than dissociative recombination of CO+ and much larger than the creation of hot carbon through collisions with hot oxygen atoms. It is also found that the high solar activity densities are about an order of magnitude larger than those for the low solar activity case.

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Nagy AF, Liemohn MW, Fox JL, Kim J. Hot carbon densities in the exosphere of Mars. Journal of Geophysical Research: Space Physics. 2001 Oct 1;106(A10):21565-21568. 2001JA000007.