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A split quasi-lagrangian method for use in a regional barotropic model
  • Published Date:
    1988
Filetype[PDF - 1.79 MB]


Details:
  • Personal Authors:
  • Corporate Authors:
    National Meteorological Center (U.S.)
  • Series:
    Office note (National Centers for Environmental Prediction (U.S.)) ; 334
  • Document Type:
  • Description:
    An economical advection scheme with linear high order accuracy is described. A splitting technique is used to solve the equations of a barotropic model. The horizontal advection process is integrated by a quasi-Lagrangian technique which uses cubic splines and deviates from past work by not employing the upstream method. The adjustment process is integrated with a forward-backward scheme. The application of this numerical method to a regional barotropic model shows that it can take full advantage of the splitting method by allowing a long time step for advection while maintaining high accuracy through the use of a cubic spline interpolation line (row) by line (row). Two approaches to the treatment of lateral boundary conditions and alternate schemes for the calculation of the adjustment process are discussed.

  • Supporting Files:
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