Thomas Fauchez, Associate Scientist, Planetary Sciences

Thomas Fauchez

Contact Info

NASA GSFC, Planetary Environments Laboratory
8800 Greenbelt Rd., Bldg. 34, Rm. S117
Greenbelt, MD 20771
Phone: (301) 614-6230

Research Interests

Dr. Fauchez's research interests are focused on rocky exoplanet characterization. He runs 3D GCMs (ROCKE3D, LMDG, CAM) and 1D GCM (ATMOS) to predict possible atmospheric states and habitability of rocky exoplanets. One of his favorite systems is TRAPPIST-1. He is using his background in cloud modeling to assess how clouds and hazes may be obstacles to atmospheric characterization because they may block partially or totally the light going through a planetary atmosphere during a transit.

Dr. Fauchez is also interested in the possibilities that offer spectropolarimetry to characterize exoplanets and has worked on the O2 detection in Earth-like exoplanets as a function of the cloud coverage and surface properties.


Dr. Thomas Fauchez is a research scientist in the Planetary Environments Laboratory at NASA Goddard Space Flight Center. His research interests concern exoplanet characterization and climate and cloud modeling, as well as Earth cloud remote sensing and 3D radiative transfer.

Ph.D. in atmospheric physics, University of Lille 1, France (Oct. 2010 - Sep. 2013)
M.S. in spatial sciences, Liège University, Belgium (Sep. 2008 – Jul. 2010)
B.S. in physic, ULCO University, France (Sep. 2005 –Jul. 2008)

GESTAR-USRA Research Scientist II (Nov. 2017- present)
Planetary Environments Laboratory, NASA GSFC, Greenbelt, USA

NASA Postdoctoral Program fellow (Nov. 2014- Oct. 2017)
Laboratory for Climate and Radiation, NASA GSFC, Greenbelt, USA
Engineer in scientific computation (Oct. 2013 – Dec. 2013)
Laboratoire d’Optique Atmosphérique (LOA), University Lille 1, France.

PhD student in atmospheric physics (Oct. 2010 – Sep. 2013)
Laboratoire d’Optique Atmosphérique (LOA), University Lille 1, France.

Academic Internship in stellar physics (Sep. 2009 – Jul. 2010)
GAPHE, Liège Space Research Institute (LisRI) , Belgium. and (May 2008 - July 2008)

- Teaching of practical classes in optics, fluid mechanics, and solid mechanics for undergraduate students (2010-2013).
- Teaching online classes for students preparing a distance learning diploma in astrophysics at the Observatoire de Paris (2015-2017).
- Scientific mediator in astrophysics at « PaLais de l’Univers et des Sciences », Capelle La Grande, France (2010 – present)

- Main convener of the session “3D Cloud Modeling as a Tool for 3D Radiative Transfer, and Conversely” of the American and Japanese Geophysical joint union AGU/JpGU 2017, Japan.
- Member of the Sellers Exoplanet Environment Collaboration (August 2017 –present)
- Member of LUVOIR study office science support analysis team (October 2017 – present)
- Associate editor in AIMS geoscience for (exo)planetary sciences. (January 2017 – present)
- Reviewer for JGR, JQSRT, RSL (2014 – present)

-Member of the American Geophysical Union
-Member of the “Societé Francaise d’Astronomie et d’astrophysique” (French astronomy and astrophysics society)
-Member of the “Societé Francaise d’Astrobiologie” (French astrobiology society)

-Award of the best PhD student talk for the IREPSE (2013)
-NASA Post-doctoral Program Fellowship Grant ~$300k (2014-2017)

Fauchez, T., S. Platnick, K. Meyer, C. Cornet, F. Szczap, and T. Varnai, Scale dependence of cirrus heterogeneity effects. Part I: MODIS thermal infrared channels, Atmos. Chem. Phys., 17, 8489-8508, 2017.
Kahn, Brian H., G. Matheou, Q. Yue, T. Fauchez, E. J. Fetzer, M. Lebsock, J. Martins, M. M. Schreier, K. Suzuki, and J. Teixeira, A satellite and reanalysis view of cloud organization, thermodynamic, and dynamic variability within the subtropical marine boundary layer, Atmos. Chem. Phys., 17, 9451-9468, 2017.
Fauchez, T., S. Platnick, O. Sourdeval, K. Meyer, C. Cornet, Z. Zhang and F. Szczap: Cirrus Heterogeneity Effects on Cloud Optical Properties Retrieved with an Optimal Estimation Method from MODIS VIS to TIR Channels., AIP Conf. Proc. 1810, 2017.
Fauchez, T., L. Rossi, D.M. Stam, The O2 A-band in fluxes and polarization of starlight reflected by Earth-Like exoplanets, The Astrophysical Journal, 842:41, 18pp, 2017.
Fauchez, T., A. B. Davis, C. Cornet, F. Szczap, S. Platnick, P. Dubuisson, and F. Thieuleux (2016), A fast hybrid (3-D/1-D) model for thermal radiative transfer in cirrus via successive orders of scattering, J. Geophys. Res. Atmos., 121, doi:10.1002/2016JD025607.
Fauchez, T., P. Dubuisson, C. Cornet, F. Szczap, A. Garnier, J. Pelon, Impacts of cloud heterogeneities on the cirrus optical properties retrieved from spatial thermal infrared radiometry, Vol 8, Issue 2, p. 633-647, AMT, DOI: 10.5194/amt-8-633-2015, 2015
Fauchez, T., C. Cornet, P. Dubuisson, F. Szczap and T. Rosambert: Impacts of cirrus cloud heterogeneities on TOA thermal infrared radiation., Atmos. Chem. Phys., 14, 5599–5615, 2014.
Szczap, F., Y. Gour, T. Fauchez, C. Cornet, T. Faure, O. Jourdan and P. Dubuisson, 3DCloud, a fast and flexible 3D cloud optical depth generator based on drastically simplified basic atmospheric equations and Fourier transform framework. Applications to stratocumulus, cumulus and cirrus cloud fields., Geosci. Model Dev., 7, p. 1779-1801, 2014.
Fauchez, T., C. Cornet, F. Szczap and P. Dubuisson, “Assessment of Cloud Heterogeneities Effects on Brightness Temperatures Simulated with a 3D Monte-Carlo Code in the Thermal Infrared”, AIP Conf. Proc. Vol. 1531, p. 75-78, 2013, DOI: 10.1063/1.4804711; International Radiation Symposium (IRS) 2012, Berlin, Germany.
Cornet, C., F.Szczap, L. C. Labonnote, T. Fauchez, F. Parol, Fr. Thieuleux, J. Riedi, P. Dubuisson, N. Ferlay, “Evaluation of cloud heterogeneities effects on total and polarized visible radiances as measured by POLDER/PARASOL and consequences on retrieved cloud properties”, AIP Conf. Proc. Vol. 1531, p. 99-102, 2013, DOI: 10.1063/1.4804717; International Radiation Symposium (IRS) 2012, Berlin, Germany.
Fauchez, T, Mi. De Becker and Y.Nazé, “The X-ray emission of the colliding wind binary V444 Cyg”. Bulletin de la Société Royale des Sciences de Liège, V. 80, pp 673-677, 2011. (, 39th Liège International Astrophysical Colloquium, LIAC 39).
Mahy, L., E. Gosset, H. Sana, G. Rauw, T. Fauchez and C. Nitschelm, “HD 150136: towards one of the most massive systems?”, Proceedings of the International Astronomical Union, Volume 6, Symposium S272, pp 521-522, July 2010. DOI: 10.1017/S1743921311011276.