Professional Interests
George Bryan's main research interests are cloud dynamics and numerical model development. Recently, he has studied the intensity of squall lines, the surface-based cold pools (i.e., gravity currents) in mesoscale convective systems, the triggering and spacing of orographic rainbands, the resolution dependence of convective processes in numerical models, and the maximum intensity of tropical cyclones.
Recent Work
Articles under review
Recent Refereed Papers
- Bryan, G. H., and R. Rotunno, 2008: The influence of near-surface, high-entropy air in hurricane eyes on maximum hurricane intensity. J. Atmos. Sci., in press.
- Bryan, G. H., 2008: On the computation of pseudoadiabatic entropy and equivalent potential temperature. Mon. Wea. Rev., in press.
- Bryan, G. H., and R. Rotunno, 2008: Gravity currents in a deep anelastic atmosphere. J. Atmos. Sci., 65, 536-556.
- Kirshbaum, D. J., R. Rotunno, and G. H. Bryan, 2007: The spacing of orographic rainbands triggered by small-scale topography. J. Atmos. Sci., 64, 4222-4245.
- Knievel, J. C., G. H. Bryan, and J. P. Hacker, 2007: Explicit numerical diffusion in the WRF Model. Mon. Wea. Rev., 135, 3808-3824.
- Kirshbaum, D. J., G. H. Bryan, R. Rotunno, and D. R. Durran, 2007: The triggering of orographic rainbands by small-scale topography. J. Atmos. Sci., 64, 1530-1549.
- Bryan, G. H., R. Rotunno, and J. M. Fritsch, 2007: Roll circulations in the convective region of a simulated squall line. J. Atmos. Sci., 64, 1249-1266.
- Trier, S. B., C. A. Davis, D. A. Ahijevych, M. L. Weisman, and G. H. Bryan, 2006: Mechanisms supporting long-lived episodes of propagating nocturnal convection within a 7-day WRF Model simulation. J. Atmos. Sci, 63, 2437-2461.
- Schultz, D. M., K. M. Kanak, J. M. Straka, R. J. Trapp, B. A. Gordon, D. S. Zrnic, G. H. Bryan, A. J. Durant, T. J. Garratt, P. M. Klein, and D. K. Lilly, 2006: The mysteries of mammatus clouds: Observations and formation mechanisms. J. Atmos. Sci., 63, 2409-2435.
- Bryan, G. H., J. C. Knievel, and M. D. Parker, 2006: A multimodel assessment of RKW Theory's relevance to squall-line characteristics. Mon. Wea. Rev., 134, 2772-2792.
- Bryan, G. H., 2005: Spurious convective organization in simulated squall lines owing to moist absolutely unstable layers. Mon. Wea. Rev., 133, 1978-1997.
Recent Conference Papers
- Bryan, G. H., 2008: Evaluation of the theoretical speed and depth of gravity currents using three-dimensional numerical simulations. Preprints, 24th Conference on Severe Local Storms, Savannah, GA, Amer. Meteor. Soc., 10.1.
- Morrison, H., G. Bryan, and G. Thompson, 2008: Impact of cloud microphysics on the development of trailing stratiform precipitation in squall lines. Preprints, 15th International Conference on Clouds and Precipitation, Cancun, Mexico, IAMAS, P3.21.
Recent Presentations
- Persistent low-level mesocyclones in simulated supercell thunderstorms (pdf file, 2 MB): Poster Presentation with Leigh Orf (Central Michigan University), 24th Conference on Severe Local Storms, Savannah, GA: 29 October 2008
- Energy conservation in compressible nonhydrostatic solvers (pdf file): Global Atmospheric Core Workshop, Boulder, CO: 23 September 2008
- The maximum intensity of hurricanes in axisymmetric numerical models (pdf file): 28th Conference on Hurricanes and Tropical Meteorology, Orlando, FL: 2 May 2008
- The propagation speed of gravity currents in a deep anelastic atmosphere (pdf file): 12th Conference on Mesoscale Processes, Waterville Valley, NH: 6 August 2007
- A comparison of convection-resolving simulations with convection-permitting simulations (pdf file): NSSL Seminar, Norman, OK: 16 May 2007