Hot carbon densities in the exosphere of Mars

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

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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
Issue numberA10
Publication statusPublished - 2001 Oct 1


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].