High Resolution Numerical Simulations of the Tornadic Region Within a Mature Thunderstorm
Recent multiple Doppler radar observations of supercell thunderstorms have documented that a particular dynamic structure consistently develops when a storm enters its tornadic phase. This structure is characterized by a downdraft outflow which wraps around the center of storm circulation at low levels and an associated distortion from a single cell to a two-cell up-draft structure (Brandes, 1978; Lemon and Doswell, 1979). In this study we investigate the evolution of a storm’s tornadic phase through high resolution numerical simulations initiated within the central portion of a 3D cloud model mature thunderstorm.
KeywordsPositive Vorticity Vertical Vorticity Convergence Line Gust Front Horizontal Vorticity
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