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
Recent Peer-Reviewed Papers:
- Bryan, G. H., 2012: Comments on "Sensitivity of tropical-cyclone models to the surface drag coefficient". Quart. J. Roy. Meteor. Soc., in press.
- Rotunno, R., and G. H. Bryan, 2012: Effects of parameterized diffusion on simulated hurricanes. J. Atmos. Sci., 69, 2284-2299, doi:10.1175/JAS-D-11-0204.1
- Bryan, G. H., 2012: Effects of surface exchange coefficients and turbulence length scales on the intensity and structure of numerically simulated hurricanes. Mon. Wea. Rev., 140, 1125-1143, doi:10.1175/MWR-D-11-00231.1
- Bryan, G. H., and H. Morrison, 2012: Sensitivity of a simulated squall line to horizontal resolution and parameterization of microphysics. Mon. Wea. Rev., 140, 202-225, doi:10.1175/MWR-D-11-00046.1
- Kang, S.-L., and G. H. Bryan, 2011: A large eddy simulation study of moist convection initiation over heterogeneous surface fluxes. Mon. Wea. Rev., 139, 2901-2917, doi:10.1175/MWR-D-10-05037.1
- Rotunno, R., J. B. Klemp, G. H. Bryan, and D. J. Muraki, 2011: Models of non-Boussinesq lock-exchange flow. J. Fluid Mech., 675, 1-26.
- Bryan, G. H., and M. D. Parker, 2010: Observations of a squall line and its near environment using high-frequency rawinsonde launches during VORTEX2. Mon. Wea. Rev., 138, 4076-4097.
- Bryan, G. H., and R. Rotunno, 2009: Evaluation of an analytical model for the maximum intensity of tropical cyclones. J. Atmos. Sci., 66, 3042-3060.
- Bryan, G. H., and R. Rotunno, 2009: The maximum intensity of tropical cyclones in axisymmetric numerical model simulations. Mon. Wea. Rev., 137, 1770-1789.
- Bryan, G. H., and R. Rotunno, 2009: The influence of near-surface, high-entropy air in hurricane eyes on maximum hurricane intensity. J. Atmos. Sci., 66, 148-158.
- Bryan, G. H., 2008: On the computation of pseudoadiabatic entropy and equivalent potential temperature. Mon. Wea. Rev., 136, 5239-5245.
- Bryan, G. H., and R. Rotunno, 2008: Gravity currents in a deep anelastic atmosphere. J. Atmos. Sci., 65, 536-556.
Recent Conference Papers:
- Nowotarski, C. J., P. M. Markowski, Y. P. Richardson, and G. H. Bryan, 2012: The influence of horizontal convective rolls on the morphology of low-level rotation in idealized simulations of supercell thunderstorms. Preprints, 26th Conference on Severe Local Storms, Amer. Meteor. Soc., Nashville, TN, 11B.4.
- G. H. Bryan, 2012: What is RKW Theory?. Preprints, 26th Conference on Severe Local Storms, Amer. Meteor. Soc., Nashville, TN, 4B.6.
- Nowotarski, C. J., P. M. Markowski, Y. P. Richardson, and G. H. Bryan, 2010: Simulating supercell thunderstorms in a horizontally heterogeneous convective boundary layer. Preprints, 25th Conference on Severe Local Storms, Amer. Meteor. Soc., Denver, CO, 13A.3.
- Bryan, G. H., R. Rotunno, and Y. Chen, 2010: The effects of turbulence on hurricane intensity. Preprints, 29th Conference on Hurricanes and Tropical Meteorology, Amer. Meteor. Soc., Tucson, AZ, 8C.7.
- Bryan, G. H., and R. Rotunno, 2009: The effects of small-scale turbulence on maximum hurricane intensity. Preprints, 13th Conference on Mesoscale Processes, Salt Lake City, UT, Amer. Meteor. Soc., 14.2.
- 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:
- What is RKW Theory? (pdf file): 26th Conference on Severe Local Storms, Nashville, TN: 5 November 2012
- A primer on cloud-resolving modeling (pdf file): ASP Seminar, NCAR: 30 November 2011
- Effects of uncertainties in numerical models of hurricanes (pdf file): Seminar, Florida State University, Meteorology Program: 10 November 2011
- Reconciling observations and numerical simulations of a mesoscale convective system (pdf file): Seminar, University of Reading, Department of Meteorology: 10 October 2011
- The effects of small-scale turbulence on maximum hurricane intensity (pdf file): Presentation at 2009 Mesoscale Processes Conference, Salt Lake City, UT: 19 August 2009
- A conceptual framework for the resolution dependence of updraft properties in cloud system resolving models (pdf file): Invited Presentation at 2008 AGU Fall Meeting, San Francisco, CA: 18 December 2008
- 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
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