James M T Lewis

James M T Lewis

  • NASA FELLOW
  • 301.286.0276
  • NASA/GSFC
  • Mail Code: 699
  • Greenbelt , MD 20771
  • Employer: HOWARD UNIV
  • Brief Bio

    James Lewis is an organic geochemist with an interest in organic-mineral interactions, the operation of flight instruments, and the interpretation of mission data. He specialises in evolved gas analysis (EGA) and gas chromatography-mass spectrometry (GC-MS), and has experience in X-ray diffraction (XRD), infrared spectroscopy, and scanning electron microscopy (SEM). Lewis completed a Masters in Science degree and a Ph.D. at Imperial College London (MSci., 2011; Ph.D., 2016). He was supervised by Professor Mark Sephton and examined the impacts of iron sulfates on pyrolysis experiments looking for organic matter on Mars. In 2016, he joined the Planetary Environments Laboratory (code 699) at NASA Goddard Space Flight Center as part of the Sample Analysis at Mars (SAM) instrument suite team. His current research focuses on how iron, sulfur, and chlorine minerals and organic salts behave during SAM-like analyses. He is also investigating the preservation and detection of carboxylic acids in the icy crusts of ocean worlds. Lewis supports missions operations for the Mars Science Laboratory Curiosity rover as a SAM Payload Downlink Lead.  

    Selected Publications

    Refereed

    Wong, G., J. M. Lewis, C. A. Knudson, et al. M. Millan, A. C. Mcadam, J. L. Eigenbrode, S. Andrejkovičová, F. Gómez, R. Navarro-González, and C. House. 2020. "Detection of reduced sulfur on Vera Rubin ridge by quadratic discriminant analysis of volatiles observed during evolved gas analysis." Journal of Geophysical Research: Planets, 125 (8): e2019JE006304 [Full Text (Link)] [10.1029/2019JE006304]

    Franz, H. B., P. R. Mahaffy, C. R. Webster, et al. G. J. Flesch, E. Raaen, C. Freissinet, S. K. Atreya, C. House, A. C. Mcadam, C. A. Knudson, P. D. Archer, J. C. Stern, A. Steele, B. Sutter, J. L. Eigenbrode, D. P. Glavin, J. M. Lewis, C. A. Malespin, M. Millan, D. W. Ming, R. Navarro-González, and R. E. Summons. 2020. "Indigenous and exogenous organics and surface-atmosphere cycling inferred from carbon and oxygen isotopes at Gale crater." Nature Astronomy, [Full Text (Link)] [10.1038/s41550-019-0990-x]

    Mcadam, A. C., B. Sutter, P. D. Archer, et al. H. B. Franz, G. Wong, J. M. Lewis, J. L. Eigenbrode, J. C. Stern, C. A. Knudson, J. Clark, S. Andrejkovicova, D. Ming, R. Morris, C. N. Achilles, E. Rampe, T. Bristow, R. Navarro-Gonzalez, P. R. Mahaffy, L. Thompson, R. Gellert, A. Williams, C. House, and S. Johnson. 2020. "Constraints on the Mineralogy and Geochemistry of the Vera Rubin ridge, Gale Crater, Mars, from Mars Science Laboratory Sample Analysis at Mars Evolved Gas Analyses." Journal of Geophysical Research: Planets, (Accepted)

    Williams, A. J., J. L. Eigenbrode, M. A. Floyd, et al. M. Wilhelm, S. O’Reilly, S. S. Johnson, K. L. Craft, C. A. Knudson, S. Andrejkovičová, J. M. Lewis, A. Buch, D. P. Glavin, C. Freissinet, R. H. Williams, R. Summons, A. C. Mcadam, K. Benison, R. Navarro-González, C. A. Malespin, and P. Mahaffy. 2019. "Recovery of Fatty Acids from Mineralogic Mars Analogs by TMAH Thermochemolysis for the Sample Analysis at Mars Wet Chemistry Experiment on the Curiosity Rover." Astrobiology, 19 (4): [Full Text (Link)] [10.1089/ast.2018.1819]

    D'Arcy, M., P. J. Mason, D. C. Roda-Boluda, et al. A. C. Whittaker, J. M. Lewis, and J. Najorka. 2018. "Alluvial fan surface ages recorded by Landsat-8 imagery in Owens Valley, California." Remote Sensing of Environment, 216: 401-414 [10.1016/j.rse.2018.07.013]

    Lewis, J. M., J. Najorka, J. S. Watson, and M. A. Sephton. 2018. "The Search for Hesperian Organic Matter on Mars: Pyrolysis Studies of Sediments Rich in Sulfur and Iron." Astrobiology, 18 (4): 454-464 [10.1089/ast.2017.1717]

    Selected Public Outreach

    Dark Skies Festival 2 / 2020 - 2 / 2020

    Dr. Lewis attended the Dark Skies Festival in Death Valley and performed outreach for the Sample Analysis at Mars (SAM) instrument suite, Mars Science Laboratory, and Mars exploration in general. His activities included assisting in leading a middle school field trip to Mars Hill, staffing a SAM outreach table at the visitor center, conducting a Mars lander activity for families, and taking part in a Q&A session at a Park Ranger astronomy night. He also supported two field trips to Confidence Hills with park visitors, where he discussed the similarities between Death Valley and Mars and our past, present, and future missions to the planet.

    Apollo 50th at the National Mall 7 / 2019 - 7 / 2019

    James Lewis volunteered at the Moon to Mars tent for the Apollo 50th Anniversary Festival on the National Mall. He discussed the Sample Analysis at Mars (SAM) instrument suite on board Curiosity rover and the MOMA instrument suite on board the ExoMars rover. While working with fellow volunteer Scott Wieman he was told that his section was the highlight of the festival by two attendees.

    Brief Bio

    James Lewis is an organic geochemist with an interest in organic-mineral interactions, the operation of flight instruments, and the interpretation of mission data. He specialises in evolved gas analysis (EGA) and gas chromatography-mass spectrometry (GC-MS), and has experience in X-ray diffraction (XRD), infrared spectroscopy, and scanning electron microscopy (SEM). Lewis completed a Masters in Science degree and a Ph.D. at Imperial College London (MSci., 2011; Ph.D., 2016). He was supervised by Professor Mark Sephton and examined the impacts of iron sulfates on pyrolysis experiments looking for organic matter on Mars. In 2016, he joined the Planetary Environments Laboratory (code 699) at NASA Goddard Space Flight Center as part of the Sample Analysis at Mars (SAM) instrument suite team. His current research focuses on how iron, sulfur, and chlorine minerals and organic salts behave during SAM-like analyses. He is also investigating the preservation and detection of carboxylic acids in the icy crusts of ocean worlds. Lewis supports missions operations for the Mars Science Laboratory Curiosity rover as a SAM Payload Downlink Lead.  

    Selected Publications

    Refereed

    Wong, G., J. M. Lewis, C. A. Knudson, et al. M. Millan, A. C. Mcadam, J. L. Eigenbrode, S. Andrejkovičová, F. Gómez, R. Navarro-González, and C. House. 2020. "Detection of reduced sulfur on Vera Rubin ridge by quadratic discriminant analysis of volatiles observed during evolved gas analysis." Journal of Geophysical Research: Planets 125 (8): e2019JE006304 [Full Text (Link)] [10.1029/2019JE006304]

    Franz, H. B., P. R. Mahaffy, C. R. Webster, et al. G. J. Flesch, E. Raaen, C. Freissinet, S. K. Atreya, C. House, A. C. Mcadam, C. A. Knudson, P. D. Archer, J. C. Stern, A. Steele, B. Sutter, J. L. Eigenbrode, D. P. Glavin, J. M. Lewis, C. A. Malespin, M. Millan, D. W. Ming, R. Navarro-González, and R. E. Summons. 2020. "Indigenous and exogenous organics and surface-atmosphere cycling inferred from carbon and oxygen isotopes at Gale crater." Nature Astronomy [Full Text (Link)] [10.1038/s41550-019-0990-x]

    Mcadam, A. C., B. Sutter, P. D. Archer, et al. H. B. Franz, G. Wong, J. M. Lewis, J. L. Eigenbrode, J. C. Stern, C. A. Knudson, J. Clark, S. Andrejkovicova, D. Ming, R. Morris, C. N. Achilles, E. Rampe, T. Bristow, R. Navarro-Gonzalez, P. R. Mahaffy, L. Thompson, R. Gellert, A. Williams, C. House, and S. Johnson. 2020. "Constraints on the Mineralogy and Geochemistry of the Vera Rubin ridge, Gale Crater, Mars, from Mars Science Laboratory Sample Analysis at Mars Evolved Gas Analyses." Journal of Geophysical Research: Planets (Accepted)

    Williams, A. J., J. L. Eigenbrode, M. A. Floyd, et al. M. Wilhelm, S. O’Reilly, S. S. Johnson, K. L. Craft, C. A. Knudson, S. Andrejkovičová, J. M. Lewis, A. Buch, D. P. Glavin, C. Freissinet, R. H. Williams, R. Summons, A. C. Mcadam, K. Benison, R. Navarro-González, C. A. Malespin, and P. Mahaffy. 2019. "Recovery of Fatty Acids from Mineralogic Mars Analogs by TMAH Thermochemolysis for the Sample Analysis at Mars Wet Chemistry Experiment on the Curiosity Rover." Astrobiology 19 (4): [Full Text (Link)] [10.1089/ast.2018.1819]

    D'Arcy, M., P. J. Mason, D. C. Roda-Boluda, et al. A. C. Whittaker, J. M. Lewis, and J. Najorka. 2018. "Alluvial fan surface ages recorded by Landsat-8 imagery in Owens Valley, California." Remote Sensing of Environment 216 401-414 [10.1016/j.rse.2018.07.013]

    Lewis, J. M., J. Najorka, J. S. Watson, and M. A. Sephton. 2018. "The Search for Hesperian Organic Matter on Mars: Pyrolysis Studies of Sediments Rich in Sulfur and Iron." Astrobiology 18 (4): 454-464 [10.1089/ast.2017.1717]

                                                                                                                                                                                            
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