Numerical Modeling of Severe Local Storms

  • Robert B. Wilhelmson
  • Louis J. Wicker
Chapter
Part of the Meteorological Monographs book series (METEOR)

Abstract

Numerical modeling of clouds is as old as computers capable of solving discrete versions of the fundamental dynamical equations. With the limited memories and computer power available in the 1960s and 1970s, most modelers employed two-dimensional slab or axisymmetric approximations to study convective dynamics (e.g., Lilly 1962; Ogura and Charney 1962; Orville 1968; Takeda 1971; Wilhelmson and Ogura 1972; Hane 1973; Soong and Ogura 1973; Schlesinger 1973; Soong 1974). The slab models represented the convective growth of infinitely long convective bands forming in environments with or without vertical wind shear, while the axisymmetric simulations were constrained to shearless environments. However, as computer power grew and vector computers were developed (e.g., the CRAY 7600 and the succeeding CRAY computers; Kaufmann and Smarr 1993), it became possible to solve the three-dimensional equations of motion on relatively coarse-mesh grids (e.g., Steiner 1973; Deardorff 1972; Wilhelmson 1974; Schlesinger 1975; Klemp and Wilhelmson 1978b).

Keywords

Severe Storm Squall Line Regional Atmospheric Modeling System Cold Pool Vertical Vorticity 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Copyright information

© American Meteorological Society 2001

Authors and Affiliations

  • Robert B. Wilhelmson
    • 1
  • Louis J. Wicker
    • 2
  1. 1.Department of Atmospheric Sciences and National Center for Supercomputer ApplicationsUniversity of Illinois at Urbana-ChampaignChampaignUSA
  2. 2.NOAA/National Severe Storms LaboratoryNormanUSA

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