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Mohamad Hejazi

Mohamad Hejazi

Integrated Modeling & Energy


Mohamad Hejazi is a research scientist with the Joint Global Change Research Institute (JGCRI) and the Pacific Northwest National Laboratory. He holds a Ph.D. (2009) from the University of Illinois at Urbana-Champaign, and a B.S. (2002) and M.S. (2004) degrees from the University of Maryland, College Park. His research interests include: global hydrologic modeling, global and regional sectoral water demand models, separating the effect of climate change, human activities, and climate policies on hydrology, and the value of information (e.g. weather and climate forecasts) to human decisions (e.g., farmers, reservoir operators). Prior to joining JGCRI-PNNL, he worked as a postdoctoral research associate at the University of Illinois Urbana-Champaign and as a research assistant at the USGS and the Illinois Water Survey.

PNNL Publications



  • Hejazi MI, X Cai, X Yuan, XZ Liang, and P Kumar. 2014. "Incorporating reanalysis-based short-term forecasts from a regional climate model in an irrigation scheduling optimization problem." Journal of Water Resources Planning and Management 140(5):699-713.  doi:10.1061/(ASCE)WR.1943-5452.0000365




  • Cai X, MI Hejazi, and D Wang. 2011. "Value of Probabilistic Weather Forecasts: Assessment by Real-Time Optimization of Irrigation Scheduling." Journal of Water Resources Planning and Management 137(5):391-403.  doi:10.1061/(ASCE)WR.1943-5452.0000126
  • Wang D, and MI Hejazi. 2011. "Quantifying the relative contribution of the climate and direct human impacts on mean annual streamflow in the contiguous United States." Water Resources Research 47:Article No. W00J12.  doi:10.1029/2010WR010283

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