Prof. John Gyakum

John  Gyakum

Synoptic and Dynamic Meteorology

Office: Burnside Hall 715
Tel.: (514) 398-6076
Fax.: (514) 398-6115
john.gyakum [at] (E-mail)
Group Photo

Research interests

Our research group conducts research on synoptic-dynamic analyses and forecasting of extreme weather in the context of climate variability. The extreme weather research involves comprehensive analyses of dynamic and thermodynamic environments (and their variability in a changing climate) facilitating such phenomena as freezing rain storms, arctic air mass generation, extreme precipitation events in extratropical latitudes, and extreme extratropical cyclogenesis. We are also studying mesoscale processes in the Saint Lawrence River Valley (SLRV, where Montreal is located), with a focus on orographic modulation of wind, precipitation, and temperature. An example of the SLRV’s impact on sensible weather is the channeling of winds that are associated with enhancing precipitation amounts beyond what can be expected for similar weather systems in level terrain.

Current projects

  • Radiative processes in the generation of arctic air masses
  • The identification and analysis of atmospheric circulation and weather regimes
  • Baroclinic conditioning of environments facilitating extreme extratropical oceanic cyclogenesis
  • Synoptic-dynamic analyses of long-duration freezing rain storms

Some recent publications

  • Evans, C., K. M. Wood, S. D. Aberson, H. M. Archambault, S. M. Milrad, L. F. Bosart, K. L. Corbosiero, C. A. Davis, J. R. Dias Pinto, J. Doyle, C. Fogarty, T. J. Galarneau Jr., C. M. Grahams, K. S. Griffin, J. R. Gyakum, R. E. Hart, N. Kitabatake, H. S. Lentink, R. McTaggart-Cowan, W. Perrie, J. F. D. Quinting, C. A. Reynolds, M. Riemer, E. A. Ritchie, Y. Sun, and F. Zhang, 2017: The extratropical transition of tropical cyclones. Part I: Cyclone evolution and direct impacts. Mon. Wea. Rev., 145, 4317-4344.
  • Milrad, S. M., K. Lombardo, E. H. Atallah, and J. R. Gyakum, 2017:  Numerical simulations of the 2013 Alberta Flood: Dynamics, thermodynamics, and the role of orography. Mon. Wea. Rev., 145, 3049-3072.
  • McTaggart-Cowan, R., J. R. Gyakum, R. W. Moore, 2017:  The baroclinic moisture flux.  Mon. Wea. Rev., 145, 25-47. DOI:

For a complete list of publications for all our faculty, please click here.

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