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Center For Applied and Computational Mathematics

Mars Data Assimilation and Climate Reanalysis

Mars climate

Faculty: Matthew Hoffman


I am working on ensemble data assimilation of the Martian atmosphere. This is part of a NASA grant and involves people from the University of Maryland, GFDL, and AER Inc. I have interfaced the LETKF with John Wilson's NASA/NOAA Mars GCM to improve prediction of the Martian weather and our understanding of the Martian climate. Initial studies have been run using simulated observations in a perfect model framework and have confirmed the viability of the LETKF for the assimilation of satellite observations from the Thermal Emission Spectrograph (TES) on the Mars Global Surveyor (MGS). Ongoing work is in assimilating real observations from the TES mission.


  1. Identifying Martian atmospheric instabilities and their physical origins using bred vectors, Greybush, S.J., E. Kalnay, M.J. Hoffman, R.J. Wilson, Quart. J. R. Met. Soc., In press.

  2. An ensemble Kalman filter data assimilation system for the Martian atmosphere: Implementation and simulation experiments, Hoffman, M. J., S .J. Greybush, R. J. Wilson, G. Gyarmati, R. N. Hoffman, E. Kalnay, K. Ide, E. Kostelich, T. Miyoshi, and I. Szunyogh, Icarus, 209, 470-481, (2010).