Mars Atmospheric Composition, Isotope Ratios and Seasonal Variations: Overview and Updates of the SAM Measurements at Gale Crater

C. R. Webster; P. R. Mahaffy; S. K. Atreya; P. G. Conrad; H. Franz; M. G. Trainer; M. H. Wong; M. A. Mischna; G. Flesch; K. A. Farley; T. C. Owen; P. B. Niles; J. H. Jones; L. E. Christensen; J. Martín-Torres; M. P. Zorzano

Mars Atmospheric Composition, Isotope Ratios and Seasonal Variations: Overview and Updates of the SAM Measurements at Gale Crater

C. R. Webster, P. R. Mahaffy, S. K. Atreya, P. G. Conrad, H. Franz, M. G. Trainer, M. H. Wong, M. A. Mischna, G. Flesch, K. A. Farley, T. C. Owen, P. B. Niles, J. H. Jones, L. E. Christensen, J. Martín-Torres, M. P. Zorzano

Geology and Geophysics

Research output: Contribution to conference › Abstract

Abstract

We will summarize the in situ measurements of atmospheric composition and the isotopic ratios of D/H in water, 13C/12C, 18O/16O, 17O/16O, and 13C18O/12C16O in carbon dioxide, 38Ar/36Ar, xKr/84Kr, and 15N/14N made in the martian atmosphere at Gale Crater from the Curiosity Rover using the Sample Analysis at Mars (SAM)'s Quadrupole Mass Spectrometer (QMS) and Tunable Laser Spectrometer (TLS). With data over 700 sols since the Curiosity landing, we will discuss evidence and implications for changes on seasonal and other timescales. We will also present results for continued methane and methane enrichment experiments over this time period. Comparison between our measurements in the modern atmosphere and those of martian meteorites like ALH 84001 implies that the martian reservoirs of CO2 and H2O were largely established ~4 billion years ago, but that atmospheric loss or surface interaction may be still ongoing.

Original language	English
Publication status	Published - Dec 2014
Event	2014 AGU Fall Meeting - San Francisco, United States Duration: 15 Dec 2014 → 19 Dec 2014

Conference

Conference	2014 AGU Fall Meeting
Country/Territory	United States
City	San Francisco
Period	15/12/14 → 19/12/14

Bibliographical note

The research described here was supported by the National Aeronautics and Space Administration (NASA).
Abstract id.P53D-02

Keywords

0343 Planetary atmospheres
ATMOSPHERIC COMPOSITION AND STRUCTURE
6225 Mars
PLANETARY SCIENCES: SOLAR SYSTEM OBJECTS
5405 Atmospheres
PLANETARY SCIENCES: SOLID SURFACE PLANETS
5445 Meteorology

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https://ui.adsabs.harvard.edu/abs/2014AGUFM.P53D..02WLicence: Unspecified

Cite this

Webster, C. R., Mahaffy, P. R., Atreya, S. K., Conrad, P. G., Franz, H., Trainer, M. G., Wong, M. H., Mischna, M. A., Flesch, G., Farley, K. A., Owen, T. C., Niles, P. B., Jones, J. H., Christensen, L. E., Martín-Torres, J., & Zorzano, M. P. (2014). Mars Atmospheric Composition, Isotope Ratios and Seasonal Variations: Overview and Updates of the SAM Measurements at Gale Crater. Abstract from 2014 AGU Fall Meeting, San Francisco, United States. https://ui.adsabs.harvard.edu/abs/2014AGUFM.P53D..02W

Webster, CR, Mahaffy, PR, Atreya, SK, Conrad, PG, Franz, H, Trainer, MG, Wong, MH, Mischna, MA, Flesch, G, Farley, KA, Owen, TC, Niles, PB, Jones, JH, Christensen, LE, Martín-Torres, J & Zorzano, MP 2014, 'Mars Atmospheric Composition, Isotope Ratios and Seasonal Variations: Overview and Updates of the SAM Measurements at Gale Crater', 2014 AGU Fall Meeting, San Francisco, United States, 15/12/14 - 19/12/14. <https://ui.adsabs.harvard.edu/abs/2014AGUFM.P53D..02W>

@conference{982c47cb0b594a319d0114d815fb7a20,

title = "Mars Atmospheric Composition, Isotope Ratios and Seasonal Variations: Overview and Updates of the SAM Measurements at Gale Crater",

abstract = "We will summarize the in situ measurements of atmospheric composition and the isotopic ratios of D/H in water, 13C/12C, 18O/16O, 17O/16O, and 13C18O/12C16O in carbon dioxide, 38Ar/36Ar, xKr/84Kr, and 15N/14N made in the martian atmosphere at Gale Crater from the Curiosity Rover using the Sample Analysis at Mars (SAM)'s Quadrupole Mass Spectrometer (QMS) and Tunable Laser Spectrometer (TLS). With data over 700 sols since the Curiosity landing, we will discuss evidence and implications for changes on seasonal and other timescales. We will also present results for continued methane and methane enrichment experiments over this time period. Comparison between our measurements in the modern atmosphere and those of martian meteorites like ALH 84001 implies that the martian reservoirs of CO2 and H2O were largely established ~4 billion years ago, but that atmospheric loss or surface interaction may be still ongoing. ",

keywords = "0343 Planetary atmospheres, ATMOSPHERIC COMPOSITION AND STRUCTURE, 6225 Mars, PLANETARY SCIENCES: SOLAR SYSTEM OBJECTS, 5405 Atmospheres, PLANETARY SCIENCES: SOLID SURFACE PLANETS, 5445 Meteorology",

author = "Webster, {C. R.} and Mahaffy, {P. R.} and Atreya, {S. K.} and Conrad, {P. G.} and H. Franz and Trainer, {M. G.} and Wong, {M. H.} and Mischna, {M. A.} and G. Flesch and Farley, {K. A.} and Owen, {T. C.} and Niles, {P. B.} and Jones, {J. H.} and Christensen, {L. E.} and J. Mart{\'i}n-Torres and Zorzano, {M. P.}",

note = "The research described here was supported by the National Aeronautics and Space Administration (NASA). Abstract id.P53D-02; 2014 AGU Fall Meeting ; Conference date: 15-12-2014 Through 19-12-2014",

year = "2014",

month = dec,

language = "English",

}

TY - CONF

T1 - Mars Atmospheric Composition, Isotope Ratios and Seasonal Variations

T2 - 2014 AGU Fall Meeting

AU - Webster, C. R.

AU - Mahaffy, P. R.

AU - Atreya, S. K.

AU - Conrad, P. G.

AU - Franz, H.

AU - Trainer, M. G.

AU - Wong, M. H.

AU - Mischna, M. A.

AU - Flesch, G.

AU - Farley, K. A.

AU - Owen, T. C.

AU - Niles, P. B.

AU - Jones, J. H.

AU - Christensen, L. E.

AU - Martín-Torres, J.

AU - Zorzano, M. P.

N1 - The research described here was supported by the National Aeronautics and Space Administration (NASA). Abstract id.P53D-02

PY - 2014/12

Y1 - 2014/12

N2 - We will summarize the in situ measurements of atmospheric composition and the isotopic ratios of D/H in water, 13C/12C, 18O/16O, 17O/16O, and 13C18O/12C16O in carbon dioxide, 38Ar/36Ar, xKr/84Kr, and 15N/14N made in the martian atmosphere at Gale Crater from the Curiosity Rover using the Sample Analysis at Mars (SAM)'s Quadrupole Mass Spectrometer (QMS) and Tunable Laser Spectrometer (TLS). With data over 700 sols since the Curiosity landing, we will discuss evidence and implications for changes on seasonal and other timescales. We will also present results for continued methane and methane enrichment experiments over this time period. Comparison between our measurements in the modern atmosphere and those of martian meteorites like ALH 84001 implies that the martian reservoirs of CO2 and H2O were largely established ~4 billion years ago, but that atmospheric loss or surface interaction may be still ongoing.

AB - We will summarize the in situ measurements of atmospheric composition and the isotopic ratios of D/H in water, 13C/12C, 18O/16O, 17O/16O, and 13C18O/12C16O in carbon dioxide, 38Ar/36Ar, xKr/84Kr, and 15N/14N made in the martian atmosphere at Gale Crater from the Curiosity Rover using the Sample Analysis at Mars (SAM)'s Quadrupole Mass Spectrometer (QMS) and Tunable Laser Spectrometer (TLS). With data over 700 sols since the Curiosity landing, we will discuss evidence and implications for changes on seasonal and other timescales. We will also present results for continued methane and methane enrichment experiments over this time period. Comparison between our measurements in the modern atmosphere and those of martian meteorites like ALH 84001 implies that the martian reservoirs of CO2 and H2O were largely established ~4 billion years ago, but that atmospheric loss or surface interaction may be still ongoing.

KW - 0343 Planetary atmospheres

KW - ATMOSPHERIC COMPOSITION AND STRUCTURE

KW - 6225 Mars

KW - PLANETARY SCIENCES: SOLAR SYSTEM OBJECTS

KW - 5405 Atmospheres

KW - PLANETARY SCIENCES: SOLID SURFACE PLANETS

KW - 5445 Meteorology

M3 - Abstract

Y2 - 15 December 2014 through 19 December 2014

ER -

Mars Atmospheric Composition, Isotope Ratios and Seasonal Variations: Overview and Updates of the SAM Measurements at Gale Crater

Abstract

Conference

Bibliographical note

Keywords

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