HURMOD

HURMOD is an axisymmetric non-hydrostatic cloud-resolving atmospheric model. The governing model equations are mass-consistent, i.e. the removal of water mass by precipitation or supply of water mass by evaporation from the ocean surface is consistently calculated by the model. The equations are formulated in cylindrical coordinates r (radius), λ (azimuthal angle) and z (height) and are numerically integrated on an Arakawa C grid. The model adopts a Smagorinsky-Lilly parameterization for microturbulence and a Kessler scheme for cloud microphysics.

HURMOD is designed for the simulation of idealized tropical cyclones and convective clouds. The axisymmetry allows a much higher gridpoint solution than in full three-dimensional models since only two spatial coordinates exist.

- Scientific documentation

- Peer-reviewed articles that use results of HURMOD simulations:

  • Frisius, T. , 2015: What controls the size of a tropical cyclone? Investigations with an axisymmetric model. Quarterly Journal of the Royal Meteorological Society, 141, 2457-2470. doi:10.1002/qj.2537.
  • Schönemann, D., and T. Frisius, T., 2014: Dynamical system properties of an axisymmetric convective tropical cyclone model. Tellus Series A - Dynamic Meteorology and Oceanography, 66, 22456. doi:10.3402/tellusa.v66.22456.
  • Frisius, T., 2014: On the hypothetical utilization of atmospheric potential energy. Meteorologische Zeitschrift, 23, 263-267. doi:10.1127/0941-2948/2014/0538.
  • Frisius, T., D. Schönemann, and J. Vigh, 2013: The impact of gradient wind imbalance on potential intensity of tropical cyclones in an unbalanced slab boundary layer model. Journal of the Atmospheric Sciences, 70, 1874-1890. doi:10.1175/JAS-D-12-0160.1.
  • Frisius, T., and D. Schönemann, 2012: An extended model for the potential intensity of tropical cyclones. Journal of the Atmospheric Sciences, 69, 641-661. doi:10.1175/JAS-D-11-064.1.
  • Schönemann, D., and T. Frisius, 2012: Dynamical system analysis of a low-order tropical cyclone model. Tellus Series A - Dynamic Meteorology and Oceanography, 64, 15817. doi:10.3402/tellusa.v64i0.15817.
  • Frisius, T., and T. Hasselbeck, 2009: The effect of latent cooling processes in tropical cyclone simulations. Quarterly Journal of the Royal Meteorological Society, 135, 1732-1749. doi:10.1002/qj.495.
HURMOD-Simulation of an idealized tropical cyclone: Tangential wind (upper panel, coloured shadings, m/s), mass stream function (upper panel, isolines), equivalent potential temperature (lower panel, coloured shading K) and mass fraction of cloud water (l