2010 Physical Sciences Review » Biographies » Georg A. Grell

Georg A. Grell

Georg A. Grell

Georg A. Grell

CIRES Scientist III

Global Systems Division


Dr. Georg Grell leads the development of the online WRF-chemistry model. The Weather Research and Forecast (WRF) model is a next generation Numerical Weather Prediction (NWP) model. Grell collaborates with scientists from many other NOAA laboratories, as well as other national and international institutes and universities on further development of WRF/Chem. Grell also is developing a new approach to parameterize convection using ensemble and data assimilation techniques, and is supervising the effort to develop chemical data assimilation 3DVAR methods for use in real-time air quality forecasting.


  • Vordiplom (B.S.) Mathematics and Physics, University of Bonn, 1981
  • PhD Atmospheric Sciences, University of Miami, Florida in 1988

Research Interests

Numerical Modeling, Physical Parameterizations, Online Chemical Modeling, Data Assimilation


Grell leads the WRF/Chem working group, http://wrf-model.org/WG11, is a member of the WRF Research and Applications Board, served as a member of the AMS committee on meteorological aspects of air pollution, is invited expert on a COST (European Corporation in the field of Scientific and Technical Research) action, and has given many invited seminars on WRF/Chem as well as convective parameterizations in Europe, Asia, and South America.

Recent Publications

  • Grell, G.A., R. Knoche, S. E. Peckham, and S. McKeen, 2004: Online versus offline air quality modeling on cloud-resolving scales. Geoph. Res. Let., 31, L16117, doi:10.1029/2004GL020175.
  • Grell, G.A., S. E. Peckham, S. McKeen, R. Schmitz, and G. Frost,William C. Skamarock, and Brian Eder, 2005: Fully coupled "online" chemistry within the WRF model. Atmosph. Env., 39, 6957-6975.
  • Pagowski, M; Grell, GA, 2006: Ensemble-based ozone forecasts: Skill and economic value. J. Geophys. Res.-Atmos.: Vol. 111
  • Grell, G.A., 2008: Coupled Weather Chemistry Modeling. Large-Scale Disasters: Prediction, Control, Mitigation, Mohamed Gad-el-Hak, Cambridge University Press. Book Chapter. In press.
  • Grell, G.A. and D. Devenyi, 2002: A generalized approach to parameterizing convection combining ensemble and data assimilation techniques, Geoph. Res. Let., 29, NO 14., 10.1029/2002GL015311, 2002.