Email: gbryan@ucar.edu
Phone: 303-497-8989
Postal Address: P.O. Box 3000, Boulder, CO, 80307-3000
Shipping Address: 3450 Mitchell Lane, Boulder, CO, 80307-3000

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

Bryan, G. H., and R. Rotunno, 2008: The maximum intensity of tropical cyclones in axisymmetric numerical model simulations. Submitted to Mon. Wea. Rev.
Bryan, G. H., and R. Rotunno, 2008: Evaluation of an analytical model for the maximum intensity of tropical cyclones. Under internal 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 Presentations

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

The dynamics of the trailing stratiform region of squall lines (pdf file): MMM Seminar, Boulder, CO: 7 December 2006

Mechanisms for the production of severe surface winds in a simulation of an elevated convective system (pdf file): Presentation at 23rd Conference on Severe Local Storms, St. Louis, MO: 7 November 2006

Recent Publications

To search my complete list of publications, please see The ESSL Publications Search.

George Bryan UCAR | NCAR | ESSL | MMM