Department of Climate and Space Sciences and Engineering in the College of Engineering at the University of Michigan


Germán Martínez
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Germán Martínez

Assistant Research Scientist

Office: 1531A Space research Building
Phone: (+1)734-358-4324


  • Ph.D. (SUMMA CUM LAUDE), Universidad Complutense de Madrid, Spain, 2010, Thesis: "Characterization of the Martian Planetary Boundary Layer", Advisors: Luis Vázquez and Francisco Valero
  • Certificado de Aptitud Pedagógica (~M.Ed.), Universidad Complutense de Madrid, Spain, 2007
  • M.S., Atmospheric Sciences, Universidad Complutense de Madrid, Spain, 2007
  • B.S., Physics, Universidad Complutense de Madrid, Spain, 2005


  • Atmospheric Thermodynamics and Radiation
  • Habitability Potential of Mars and the Icy Worlds
  • Present Martian Climate
  • Human Exploration of Mars

Specializations and Research Interests

  • Study of surface-based and orbital Martian environmental data
  • Experimental and theoretical studies of liquid brine formation on Mars
  • Martian Radiative Transfer Modeling
  • Martian Water Cycle and Soil-Atmosphere Interactions

Honors, Awards and Accomplishments

  • NASA's Mars Science Laboratory extended mission, Group Achievement Award, 2017
  • NASA's Mars Science Laboratory mission, Group Achievement Award, 2015
  • UCM-EEA Abel Predoc Grant, European Economic Area, 2010
  • Universidad Complutense de Madrid "Exención de tasas" Award, 2006. Fellowship covering full tuition for the PhD program. Awarded to 5% of applicants.
  • Graduated from high school with an award as best student, Murcia, Spain, class 1995

Professional Service

  • Proposal reviewer for Europlanet 2020 Research Infrastructure, 2018
  • Proposal reviewer for NASA Earth and Space Science Fellowship Program, 2016-2017
  • Proposal reviewer for NSF Antarctic Earth Sciences Program, 2016
  • Panelist and proposal reviewer for NASA Mars Data Analysis Program, 2015


  • CLASP 749: Climate and Space Sciences Seminar, Fall 2016 and Winter 2017
  • AOSS 350: Atmospheric Thermodynamics, Winter 2013 and 2014
  • Climate Risks and Environmental Impacts, M.Sc. course offered by Universidad Complutense de Madrid and the Spanish Meteorology Agency, 2010 

Mission Participation

  • NASA's Mars 2020 Mission, Co-I of MEDA instrument, 2014-present
  • NASA's Mars Science Laboratory Mission, team member


Refereed Journal Publications

  1. Fischer, E., G. M. Martínez, N. Renno, L. K. Tamppari and A. Zent, New results of relative humidity at Mars' Phoenix landing site, J. Geophys. Res.: Planets (in preparation), 2018.
  2. Martínez, G. M. et al., Interannual variability of water ice opacity at Gale: Impact on near-surface environmental conditions, J. Geophys. Res.: Planets (in preparation), 2018.
  3. Vicente-Retortillo, A., G. M. Martínez, N. Renno, M. Lemmon and J. Gómez-Elvira, Generation of UV Radiation Data Products at Gale Crater by correcting REMS UV Data from Dust Deposition and Sensor's Angular Response, J. Geophys. Res.: Planets (in preparation), 2018.
  4. Renno, N., R. Backhus, C. Cooper, J. M. Flatico, E. Fischer, L. C. Greer, M. Krasowski, T. Kremic, G. M. Martínez, N. F. Prokop and A. Vicente-Retortillo, A Simple Instrument Suite for Characterizing Habitability and Weathering: The Modern Aqueous Habitat Reconnaissance Suite (MAHRS), Astrobiology (under review).
  5. Vicente-Retortillo, A., G. M. Martínez, N. Renno, C. E. Newman, I. Ordóñez-Etxeberría. M. T. Lemmon, M. I. Richardson, R. Hueso and A. Sánchez-Lavega, Seasonal Deposition and Lifting of Dust on Mars as observed by the Curiosity Rover, Scientific Reports (under review) (2018).
  6. Moores, J. E., R. V. Gough, G. M. Martínez, P.-Y. Meslin, C. Smith, S. Atreya, P. Mahaffy, C. Newman and C. Webster, The methane seasonal cycle at Gale crater, Mars suggests adsorption-mediated microseepage, Nature Geoscience (under review), 2018.
  7. Gough, R. V., K. M. Primm, E. G. Rivera-Valentín, G. M. Martínez and M. A. Tolbert, Solid-solid hydration and dehydration of Mars-relevant chlorine salts: Implications for Gale Crater and RSL Locations, Icarus (under review), 2018.
  8. Primm, K. M., R. V. Gough, J. Wong, E. G. Rivera-Valentin, G. M. Martínez, J. V. Hogancamp, P. D. Archer, D. W. Ming, M. A. Tolbert, The Effect of Mars-relevant soil analogs on the Water Uptake of Magnesium Perchlorate and Implications for the Near-Surface of Mars, J. Geophys. Res.: Planets, (in press), 2018.
  9. Webster, C. R., P. R. Mahaffy, S. K. Atreya, J. Moores, G. J. Flesch, C. Malespin, C. McKay, G. M. Martínez et al., Mars Methane Background Shows Strong Seasonal Cycle, Science (in press), 2018.
  10. Valentin-Rivera, E. G., R. Gough, V. Chevrier, K. M. Primm, G. M. Martínez, M.Tolbert, Constraining the potential liquid water environment at Gale crater, Mars, J. Geophys. Res.: Planets (in press), 2018.
  11. Vaniman, D. T., G. M. Martínez, E. B. Rampe, T. F. Bristow, D. F. Blake, A. H. Yen, D. W. Ming, W. Rapin, P.-Y. Meslin, J. M. Morookian, R. T. Downs, S. J. Chipera, R. V. Morris, S. M. Morrison, A. H. Treiman, C. N. Achilles, J. P. Grotzinger, R. M. Hazen, J. A. Crisp, Gypsum, bassanite, and anhydrite at Gale crater, Mars, American Mineralogist (in press), 2018.
  12. Pérez-Izquierdo, J., E. Sebastián, G. M. Martínez, A. Bravo, M. Ramos, J. A. Rodríguez-Manfredi, The Thermal Infrared Sensor (TIRS) of the Mars Environmental Dynamics Analyzer (MEDA) Instrument onboard Mars 2020, A general description and performance analysis, Measurement,, 2017.
  13. McConnochie, T. H., M. D. Smith, M. J. Wolff, S. Bender, M. Lemmon, R. C. Wiens, S. Maurice, O. Gasnault, A.-M. Harri, M. Genzer, O. Kemppinen, G. M. Martínez, J. Lasue, L. DeFlores, D. Blaney, D. R. Johnson, J. F. Bell III, Retrieval of Water Vapor Column Abundance and Aerosol Properties from ChemCam Passive Sky Spectroscopy, Icarus (Under Review), 2017.
  14. Vicente-Retortillo, A., G. M. Martínez, N. O. Renno, M. Lemmon, and M. de la Torre-Juárez, Determination of dust aerosol particle size at Gale Crater using REMS UVS and Mastcam measurements, Geophys. Res. Lett, 44(8), 3502-3508, 2017.
  15. Martínez, G. M., C. N. Newman, A. De Vicente-Retortillo, E. Fischer, N. O. Renno, M. I. Richardson, A. G. Fairén, S. D. Guzewich, R. M. Haberle, O. Kemppinen, M. T. Lemmon, M. D. Smith, M. de la Torre-Juárez and A. R. Vasavada, The Modern Near-Surface Martian Climate: A Review of In-situ Meteorological Data from Viking to Curiosity, Space Science Reviews, 1-44, 2017.
  16. Vicente-Retortillo, A., M. Lemmon, G. M. Martínez, F. Valero, L. Vázquez and M. L. Martín, Variabilidad estacional e interanual de la radiación solar en las coordenadas de aterrizaje de Spirit, Opportunity y Curiosity (English version: Seasonal and interannual variability of solar radiation at Spirit, Opportunity and Curiosity landing sites), Fisica de la Tierra, 28, 111-127, 2016.
  17. Martínez, G. M., M. de la Torre-Juárez, A. Vicente-Retortillo, O. Kemppinen, N. Renno and M. Lemmon, Análisis de las condiciones ambientales en el cráter Gale a partir de mediciones REMS/MSL (English version: An overview of the environmental conditions at Gale Crater from MSL/REMS measurements), Fisica de la Tierra (Invited), 28, 163-179, 2016.
  18. Fischer, E., G. M. Martínez, and N. O. Renno, Formation and persistence of brine on Mars: Experimental simulations throughout the diurnal cycle at the Phoenix landing site, Astrobiology, 16(12), 937-948, 2016.
  19. Rapin, W., P.-Y. Meslin, S. Maurice, D. Vaniman, M. Nachon, N. Mangold, S. Schröder, O. Gasnault, O. Forni, R. C. Wiens, G. M. Martínez, A. Cousin, V. Sautter, J. Lasue, and D. Archer, Hydration state of calcium sulfates in Gale Crater: identification of bassanite veins, Earth Planet. Sci. Lett., 452, 197-205, 2016.
  20. Martínez, G. M., E. Fischer, N. O. Rennó, E. Sebastián, O. Kemppinen, N. Bridges, C. S. Borlina, P.-Y. Meslin, M. Genzer, A.-M. Harri, A. Vicente-Retortillo, M. Ramos, M. de la Torre Juárez, F. Gómez, J. Gómez-Elvira and the REMS Team, Likely frost events at Gale crater: Analysis from MSL/REMS measurements, Icarus, 280, 93-102, 2016.
  21. Vicente-Retortillo, A., F. Valero, L. Vázquez, and G. M. Martínez, A model to calculate solar radiation fluxes on the Martian surface, Space Weather and Space Climate, 5, A33, 2015.
  22. Martínez, G. M., N. O. Renno, E. Fischer, C. S. Borlina, B. Hallet, M. de la Torre-Juárez, A. Vasavada, M. Ramos, V. Hamilton, J. Gómez-Elvira, R. M. Haberle, and the REMS Team, Surface Energy Budget and Thermal Inertia at Gale Crater: Calculations from Ground-Based Measurements, Journal of Geophysical Research: Planets 119.8: 1822-1838, 2014.
  23. Fischer, E., G. M. Martínez, H. Elliott, and N. O. Renno, Experimental evidence for the formation of liquid saline water on Mars. Geophysical Research Letters, 41, DOI:10.1002/2014GL060302, 2014.
  24. Martínez, G. M., F. Valero, L. Vázquez, and H. Elliott, The Martian Planetary Boundary Layer: Turbulent Kinetic Energy and Fundamental Similarity Scales, Solar System Research (Invited), DOI: 10.1134/S003809461306004X, 2013.
  25. Martínez, G. M., and N. O. Renno, Water and Brines on Mars: Current Evidence and Implications for MSL, Space Science Reviews (Invited). DOI:10.1007/s11214-012-9956-3, 2013.
  26. Martínez, G. M., N. O. Renno, and H. Elliott, The Evolution of the Albedo of Dark Spots Observed on Mars Polar Region, Icarus, 221, 816-830. DOI:10.1016/j.icarus.2012.09.008, 2012.
  27. Martínez, G. M., F. Valero, and L. Vázquez, TKE Budget in the Convective Martian PBL, Quarterly Journal of the Royal Meteorological Society. DOI: 10.1002/qj.883, 2011.
  28. Martínez, G. M., F. Valero, and L. Vázquez, Characterization of the Martian Convective Boundary Layer, Journal of Atmospheric Sciences, 66, Issue 7, 2044–2058. DOI: 10.1175/2009JAS3007.1, 2009.
  29. Martínez, G. M., F. Valero, and L. Vázquez, Characterization of the Martian Surface Layer, Journal of Atmospheric Sciences, 66, Issue 1, 187–198. DOI:10.1175/2008JAS2765.1, 2009.
Updated: 2018-08-29