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Energy and Environment Directorate

Nathalie Voisin

(206) 528-3312


Dr. Nathalie Voisin joined PNNL in 2010. Nathalie is a hydro-meteorologist engineer specialized in land surface hydrology modeling and forecasting and in water resources management modeling. She is especially interested in applied research and development of water resources modeling and forecasting for integration with other models: coastal, water resources management, energy models. She is also interested in the development and application of ensemble flow forecast systems (pre and post processing, data assimilation). Her background and experience covers meteorology and climatology to surface hydrology modeling and water resources management models, from local watershed to global simulations, and horizons ranging from short range to seasonal including climate change impact prediction.

Synergetic activities: Convener and/or chair:

  • Advances in Hydro-meteorological research and applications: Fall Meeting of the AGU, San Francisco, December 2011
  • Ensemble flow forecast verification: HEPEX workshop, The Netherlands, June 2011
  • Assessment of the water resources management modeling in the Deschutes River Basin, OR; stakeholders modeling workshop, Seattle, January 2012
  • Hydrological forecasting: challenges in uncertainty estimation, data assimilation, post-processing, real-time control and decision-making: General Assembly of EGU, Austria, April 2012
  • Advances in Hydro-meteorological research and applications: Fall Meeting of the AGU, San Francisco, December 2012
  • Advances in Hydro-meteorological research and applications: Fall Meeting of the AGU, San Francisco, December 2013
  • Advances in global reservoir modeling and monitoring: Fall Meeting of the AGU, San Francisco, December 2013

Section Editor of the Handbook of Hydrometeorological Ensemble Forecasting, edited by Qingyun Duan, Florian Pappenberger, Jutta Thielen, Andy Wood, Hannah Cloke and John C. Schaake. Chapter on Verification of ensemble hydro-meteorological forecasts. Springer.

Education and Credentials

  • Ph.D. (2010), Civil and Environmental Engineering, University of Washington, Seattle WA, USA
  • M.Sc. (2003) Atmospheric and Oceanic Sciences, McGill University, Montreal, QC, Canada
  • M. Eng. (2001) & B. Eng. (2000), Fluid Mechanics and Hydraulics Engineering, ENSEEIHT Engineering School, Toulouse, France

Affiliations and Professional Service

  • Member of the Hydrological Ensemble Prediction Experiment (HEPEX) science steering committee: 2010-present
  • Member of the American Meteorological Society: 2004-present
  • Member of the American Geophysical Union: 2003-present
  • Member of the European Geophysical Union: 2007-present

PNNL Publications


  • Tesfa TK, LYR Leung, M Huang, H Li, N Voisin, and MS Wigmosta. 2014. "Scalability of grid- and subbasin-based land surface modeling approaches for hydrologic simulations." Journal of Geophysical Research. D. (Atmospheres) 119(6):3166-3184.  doi:10.1002/2013JD020493


  • Schumann GJ, JC Neal, N Voisin, KM Andreadis, F Pappenberger, K Phanthuwongpakdee, AC Hall, and PD Bates. 2013. "A first large-scale flood inundation forecasting model." Water Resources Research 49(10):6248-6257.  doi:10.1002/wrcr.20521
  • Voisin N, H Li, DL Ward, M Huang, MS Wigmosta, and LYR Leung. 2013. "On an improved sub-regional water resources management representation for integration into earth system models." Hydrology and Earth System Sciences 17(9):3605-3622.  doi:10.5194/hess-17-3605-2013
  • Voisin N, L Liu, MI Hejazi, TK Tesfa, H Li, M Huang, Y Liu, and LYR Leung. 2013. "One-way coupling of an integrated assessment model and a water resources model: evaluation and implications of future changes over the US Midwest ." Hydrology and Earth System Sciences 17(No. 11):4555-4575.  doi:10.5194/hess-17-4555-2013


  • Schaner N, N Voisin, B Nijssen, and DP Lettenmaier. 2012. "The contribution of glacier melt to streamflow." Environmental Research Letters 7(3):Article No. 034029.  doi:10.1088/1748-9326/7/3/034029
  • Shukla S, N Voisin, and DP Lettenmaier. 2012. "Value of medium range weather forecasts in the improvement of seasonal hydrologic prediction skill." Hydrology and Earth System Sciences 16(8):2825-2838.  doi:10.5194/hess-16-2825-2012


  • Degu AM, F Hossain, D Niyogi, R Pielke, JM Shepherd, N Voisin, and T Chronis. 2011. "The Influence of Large Dams on Surrounding Climate and Precipitation Patterns." Geophysical Research Letters 38:Article No. L04405.  doi:10.1029/2010GL046482

Energy and Environment

Core Research Areas