NASA Logo Jet Propulsion Laboratory California Institute of Technology View the NASA Portal
NASA Banner
NASA Banner
NASA Banner
NASA Banner
JPL Science
JPL Science Division Home
Planetary Science Planetary Science
Planetary And Exoplanetary Atmospheres (3222)
Geophysics & Planetary Geosciences (3223)
Asteroids, Comets & Satellites (3224)
Planetary Chemistry and Astrobiology (3225)
Planetary Ices (3227)
Astrophysics & Space Sciences Astrophysics & Space Sciences
Earth Science Earth Science
Directorate Science Affiliates Directorate Science Affiliates
Open Postdoc Positions Open Postdoc Positions
Brochures Brochures
 Planetary Chemistry and Astrobiology (3225): People
Gregory  Flesch's Picture
Jet Propulsion Laboratory
M/S 183-401
4800 Oak Grove Drive
Pasadena, CA 91109
Email Contact:
Curriculum Vitae:

Gregory Flesch

  • M.S. in Computer Science, University of Southern California (2001)
  • B.S. in Computer Science, California State Polytechnic University at Pomona, cum laude (1993)

Research Interests
  • Autonomous and Adaptive Instrument Control Software for laser spectrometers
  • Algorithm design for data processing and analysis, data mining
  • Systems Engineering

Professional Experience
  • Jet Propulsion Laboratory - Scientific Applications Software Engineer (1992 - Present)

Selected Awards
  • 2 NASA Exceptional Achievement Medal (2002, 2014)
  • NASA Award for Technical Excellence (2001)
  • NASA Group Achievement Awards (19 from 1994 to present)

Selected Publications
  • "A System-On-Chip platform for Earth and Planetary Laser Spectrometers", Flesch, Gregory, Didier Keymeulen, David Dolman, Chris Holyoake, and Derek McKee.  In Aerospace Conference, 2017 IEEE, pp. 1-12. IEEE, 2017.

  • "Five Years of Analyses of Volatiles, Isotopes and Organics in Gale Crater Materials", (co-author) In AGU 2017 Fall Meeting. 2017.

  • "The imprint of atmospheric evolution in the D/H of Hesperian clay minerals on Mars", (co-author) Science 347, no. 6220 (2015): 412-414.

  • "Mars methane detection and variability at Gale crater", Webster, Christopher R., Paul R. Mahaffy, Sushil K. Atreya, Gregory J. Flesch, Michael A. Mischna, Pierre-Yves Meslin, Kenneth A. Farley et al. Science 347, no. 6220 (2015): 415-417.

  • "Non-detection of methane in the Mars atmosphere by the curiosity rover", Webster, Chris R., Paul R. Mahaffy, Sushil K. Atreya, Gregory J. Flesch, and Kenneth A. Farley.  (2014).

  • "Isotope ratios of H, C, and O in CO2 and H2O of the martian atmosphere", Webster, C. R., Mahaffy, P. R., Flesch, G. J., Niles, P. B., Jones, J. H., Leshin, L. A., ... & Steele, A., Science, 341(6143), 260-263 (2013).

  • "Low Upper Limit to Methane Abundance on Mars", Webster, C. R., Mahaffy, P. R., Atreya, S. K., Flesch, G. J., & Farley, K. A. Science, 1242902 (2013).

  • "Volatile, Isotope, and Organic Analysis of Martian Fines with the Mars Curiosity rover." (co-author) Science, 341(6153), 1238937 (2013).

  • "The Sample Analysis at Mars Investigation and instrument suite" (co-author) Space Science Review (2012)

  • "Adaptive Tunable Laser Spectrometers" G. Flesch and D. Keymeulen, 2010 IEEE aerospace, Big Sky, MT, (March 2010).

  • "Tunable Laser Paleothermometer for Determining Climate Change" C.R. Webster, F. Carsey, M. Hecht, and G.J. Flesch, Applied Optics, (2003).

  • "Airborne Laser Isotope Spectrometer (ALIS) for Measuring Terrestrial 13C/12C and 18O/16O in Atmospheric Carbon Dioxide", C.R. Webster, L. Christensen, and G.J. Flesch, Applied Optics, (2003).

  • "Mars Laser Hygrometer, C.R. Webster, G.J. Flesch, R. Haberle, and J. Bauman, Applied Optics, 43, 4436-4445, (2004).

  • "The Construction of a Unified, High-Resolution Nitrous Oxide Data Set for ER-2 Flights During SOLVE" (co-author) SOLVE/THESEO special issue J. Geophys. Res. (2001).

  • "Quantum cascade laser measurements of stratospheric methane (CH4) and nitrous oxide (N2O)" (co-author) Applied Optics, 38, 4609-4622, (1998).

  • "Airborne Laser Infrared Absorption Spectrometer (ALIAS-II) for In situ Atmospheric Measurements of N2O, CH4, CO, HCl, and NO2 from Balloon or RPA Platforms" (co-author) Applied Optics, (December 1999).

  • "Evolution of HCl Concentrations in the Lower Stratosphere from 1991 to 1996 Following the Eruption of Mt. Pinatubo" (co-author) Geophysical Research Lett. 25, 995-998, (1998).

Group Home Page
People in this Group
Group Projects

JPL Privacy Statement Sitemap Contact Site Manager