Modeling of Martian seasonal caps from HEND/ODYSSEY data

M. L. Litvak, I. G. Mitrofanov, A. S. Kozyrev, A. B. Sanin, V. I. Tretyakov, William V. Boynton, D. Hamara, C. Shinohara, R. S. Saunders

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

In this paper, we have analyzed neutron spectroscopy data gathered by the high energy neutron detector instrument onboard Mars Odyssey in order to study the behavior of CO2 condensed mass at the polar regions of Mars. It is known that observation of the neutron albedo of Mars provides not only information on distribution of water ice/bounded water through Martian subsurface but is also sensitive to the condensation/sublimation of atmospheric CO2 at the Martian poles. Analysis of temporal variations of neutron flux between summer and winter seasons allowed the creation of multidimensional model of CO2 deposition describing behavior of CO2 condensed mass as a function of longitude, latitude and time. Based on this model, we have estimated the total masses of north seasonal cap ((3.8 ± 0.4) × 1015 kg), south seasonal cap ((6.3 ± 0.6) × 1015 kg) and compared our estimations with predictions of General Circulation Model. Furthermore, using the data gathered during second Martian year on the orbit, we have conducted preliminary comparison between seasonal cycles of two successive Martian years.

Original languageEnglish (US)
Pages (from-to)2156-2161
Number of pages6
JournalAdvances in Space Research
Volume36
Issue number11
DOIs
StatePublished - 2005

Fingerprint

caps
mars
Mars
Neutrons
modeling
Neutron detectors
neutrons
neutron counters
Neutron flux
Sublimation
sublimation
longitude
polar region
flux (rate)
albedo
polar regions
winter
water
summer
Ice

Keywords

  • Martian atmosphere
  • Martian seasonal cycle
  • Neutron spectroscopy

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

Litvak, M. L., Mitrofanov, I. G., Kozyrev, A. S., Sanin, A. B., Tretyakov, V. I., Boynton, W. V., ... Saunders, R. S. (2005). Modeling of Martian seasonal caps from HEND/ODYSSEY data. Advances in Space Research, 36(11), 2156-2161. https://doi.org/10.1016/j.asr.2005.09.007

Modeling of Martian seasonal caps from HEND/ODYSSEY data. / Litvak, M. L.; Mitrofanov, I. G.; Kozyrev, A. S.; Sanin, A. B.; Tretyakov, V. I.; Boynton, William V.; Hamara, D.; Shinohara, C.; Saunders, R. S.

In: Advances in Space Research, Vol. 36, No. 11, 2005, p. 2156-2161.

Research output: Contribution to journalArticle

Litvak, ML, Mitrofanov, IG, Kozyrev, AS, Sanin, AB, Tretyakov, VI, Boynton, WV, Hamara, D, Shinohara, C & Saunders, RS 2005, 'Modeling of Martian seasonal caps from HEND/ODYSSEY data', Advances in Space Research, vol. 36, no. 11, pp. 2156-2161. https://doi.org/10.1016/j.asr.2005.09.007
Litvak ML, Mitrofanov IG, Kozyrev AS, Sanin AB, Tretyakov VI, Boynton WV et al. Modeling of Martian seasonal caps from HEND/ODYSSEY data. Advances in Space Research. 2005;36(11):2156-2161. https://doi.org/10.1016/j.asr.2005.09.007
Litvak, M. L. ; Mitrofanov, I. G. ; Kozyrev, A. S. ; Sanin, A. B. ; Tretyakov, V. I. ; Boynton, William V. ; Hamara, D. ; Shinohara, C. ; Saunders, R. S. / Modeling of Martian seasonal caps from HEND/ODYSSEY data. In: Advances in Space Research. 2005 ; Vol. 36, No. 11. pp. 2156-2161.
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AB - In this paper, we have analyzed neutron spectroscopy data gathered by the high energy neutron detector instrument onboard Mars Odyssey in order to study the behavior of CO2 condensed mass at the polar regions of Mars. It is known that observation of the neutron albedo of Mars provides not only information on distribution of water ice/bounded water through Martian subsurface but is also sensitive to the condensation/sublimation of atmospheric CO2 at the Martian poles. Analysis of temporal variations of neutron flux between summer and winter seasons allowed the creation of multidimensional model of CO2 deposition describing behavior of CO2 condensed mass as a function of longitude, latitude and time. Based on this model, we have estimated the total masses of north seasonal cap ((3.8 ± 0.4) × 1015 kg), south seasonal cap ((6.3 ± 0.6) × 1015 kg) and compared our estimations with predictions of General Circulation Model. Furthermore, using the data gathered during second Martian year on the orbit, we have conducted preliminary comparison between seasonal cycles of two successive Martian years.

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