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[Keyword] finite difference scheme(1hit)

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  • Numerical Simulation of Low-Altitude Wind Shears for a Terminal Doppler Weather Radar System

    Yasuyoshi HORIBATA  Hiroshi OIKAWA  

     
    PAPER

      Vol:
    E79-B No:6
      Page(s):
    801-809

    Several major aircraft accidents have been attributed to low-altitude wind shears, which are normally caused by microbursts or gust fronts. Terminal Doppler Weather Radar (TDWR) systems are being installed near major airports for the detection of low-altitude wind shears. In order to develop a TDWR system further, low-altitude wind shears were numerically simulated in this study. The basic equations, which contain prognostic equations for air velocity, pressure, temperature, water vapor, and rainwater, were solved using a finite difference scheme. A terrain-following coordinate transformation was employed to simulate terrain effects. The simulation results are presented in this paper.