Accession Number:

ADA200825

Title:

An Investigation of Finite Difference and Finite Element Vertical Schemes for the Baroclinic Prediction Equations

Descriptive Note:

Master's thesis

Corporate Author:

NAVAL POSTGRADUATE SCHOOL MONTEREY CA

Personal Author(s):

Report Date:

1988-06-01

Pagination or Media Count:

116.0

Abstract:

The vertical discretization in a linearized baroclinic prediction model was analyzed by comparing various finite element and finite difference solutions following Jordan 1985 and Shapiro 1987. The baroclinic instability experiments of Shapiro 1987 were augmented to include the unstaggered vertical scheme from Jordan 1985. Two basic wind profiles were used and the experiments were run with different resolution models and horizontal wavelengths. For a given wind profile and vertical resolution, different models performed better. The finite element models for the staggered vertical grids did not perform up to their possibilities due to the boundary elements. However, for the unstaggered vertical grid, the finite element model did better than the finite difference model in most cases. Keywords Theses Nonlinear vertical shear Galerkin method Numerical weather prediction Finite elements Finite differences Baroclinic instability.

Subject Categories:

  • Meteorology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE