Modeling of Martian seasonal caps from HEND/ODYSSEY data

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

doi:10.1016/j.asr.2005.09.007

Modeling of Martian seasonal caps from HEND/ODYSSEY data

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

Lunar and Planetary Lab

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

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 CO ₂ 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 CO ₂ at the Martian poles. Analysis of temporal variations of neutron flux between summer and winter seasons allowed the creation of multidimensional model of CO ₂ deposition describing behavior of CO ₂ 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) × 10 ¹⁵ kg), south seasonal cap ((6.3 ± 0.6) × 10 ¹⁵ 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 language	English (US)
Pages (from-to)	2156-2161
Number of pages	6
Journal	Advances in Space Research
Volume	36
Issue number	11
DOIs	https://doi.org/10.1016/j.asr.2005.09.007
State	Published - 2005

Keywords

Martian atmosphere
Martian seasonal cycle
Neutron spectroscopy

ASJC Scopus subject areas

Aerospace Engineering
Astronomy and Astrophysics
Geophysics
Atmospheric Science
Space and Planetary Science
General Earth and Planetary Sciences

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10.1016/j.asr.2005.09.007

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title = "Modeling of Martian seasonal caps from HEND/ODYSSEY data",

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 CO 2 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 CO 2 at the Martian poles. Analysis of temporal variations of neutron flux between summer and winter seasons allowed the creation of multidimensional model of CO 2 deposition describing behavior of CO 2 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) × 10 15 kg), south seasonal cap ((6.3 ± 0.6) × 10 15 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.",

keywords = "Martian atmosphere, Martian seasonal cycle, Neutron spectroscopy",

author = "Litvak, {M. L.} and Mitrofanov, {I. G.} and Kozyrev, {A. S.} and Sanin, {A. B.} and Tretyakov, {V. I.} and Boynton, {W. V.} and D. Hamara and C. Shinohara and Saunders, {R. S.}",

year = "2005",

doi = "10.1016/j.asr.2005.09.007",

language = "English (US)",

volume = "36",

pages = "2156--2161",

journal = "Advances in Space Research",

issn = "0273-1177",

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TY - JOUR

T1 - Modeling of Martian seasonal caps from HEND/ODYSSEY data

AU - Litvak, M. L.

AU - Mitrofanov, I. G.

AU - Kozyrev, A. S.

AU - Sanin, A. B.

AU - Tretyakov, V. I.

AU - Boynton, W. V.

AU - Hamara, D.

AU - Shinohara, C.

AU - Saunders, R. S.

PY - 2005

Y1 - 2005

N2 - 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 CO 2 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 CO 2 at the Martian poles. Analysis of temporal variations of neutron flux between summer and winter seasons allowed the creation of multidimensional model of CO 2 deposition describing behavior of CO 2 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) × 10 15 kg), south seasonal cap ((6.3 ± 0.6) × 10 15 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.

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 CO 2 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 CO 2 at the Martian poles. Analysis of temporal variations of neutron flux between summer and winter seasons allowed the creation of multidimensional model of CO 2 deposition describing behavior of CO 2 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) × 10 15 kg), south seasonal cap ((6.3 ± 0.6) × 10 15 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.

KW - Martian atmosphere

KW - Martian seasonal cycle

KW - Neutron spectroscopy

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JO - Advances in Space Research

JF - Advances in Space Research

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ER -

Modeling of Martian seasonal caps from HEND/ODYSSEY data

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Keywords

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