Mohamad E. Gharamti

PhD Student

Current: Scientist at NCAR, USA


Research Interests

  • ​​Hydrological modeling including single and multiphase flows
  • Contaminant transport modeling in subsurface aquifers
  • ​Sequential data assimilation in hydrology
  • Low-rank filtering and dual approaches
  • 4D-Variational data assimilation
  • Inverse problems and data analysis  

Selected Publications

  • M.E. Gharamti, J. Valstar, and I. Hoteit (2014): An adaptive hybrid EnKF-OI scheme for efficient state-parameter estimation of reactive contaminant transport models. Advances in Water Resources, doi: 10.1016/j.advwatres.2014.05.001.
  • M.E. Gharamti, A. Kadoura, J. Valstar, S. Sun, and I. Hoteit (2014): Constraining a Compositional Flow Model with Flow-Chemical Data Using an Ensemble-Based Kalman Filter. Water Resources Research, doi: 10.1002/2013WR014830.
  • M.E. Gharamti and I. Hoteit (2014): Complex Step-based Low-Rank Extended Kalman Filtering for State-Parameter Estimation in Subsurface Transport Models. Journal of Hydrology, doi: 10.1016/j.jhydrol.2013.12.004.
  • M.E. Gharamti, I. Hoteit, and J. Valstar (2013): Dual States Estimation of a Subsurface Flow-Transport Coupled Model using Ensemble Kalman Filtering. Advances in Water Resources, doi: 10.1016/j.advwaters.2013.07.011.
  • M.U. Altaf, M.E. Gharamti, I. Hoteit, and A. Heemink (2012): A reduced adjoint approach to variational data assimilation. Computer Methods in Applied Mechanics and Mechanical Engineering, doi: 10.1016/j.cma.2012.10.2013.
  • M.E. Gharamti, I. Hoteit, and S. Sun (2011): Low-rank Kalman filtering in subsurface contaminant transport modeling. Journal of Environmental Engineering, doi:10.1061/(ASCE)EE.1943-7870.0000484.


  • M.Sc., Earth Sciences and Engineering (Fluid Track), King Abdullah University of Science and Technology, Thuwal, SAUDI ARABIA, 2010.
  • B.Sc.,
    - Major: Geological Engineering, Middle East Technical University, Ankara, TURKEY, 2009
    - Minor: Remote Sensing/Geographic Information Systems, Middle East Technical University, Ankara, TURKEY, 2009​

Non-KAUST Affiliations

Research Interests Keywords

Subsurface flow and transport modeling Inverse Problems Data assimilation