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Article Type:
Research Article

Mesoscale Model Initialization of the Fourier Method for Mountain Waves

John Lindeman1, Zafer Boybeyi1, Dave Broutman2, Jun Ma2, Stephen D. Eckermann3, and James W. Rottman4
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  • 1 College of Science, George Mason University, Fairfax, Virginia
  • | 2 Computational Physics, Inc., Springfield, Virginia
  • | 3 Space Science Division, Naval Research Laboratory, Washington, D.C
  • | 4 Naval Hydrodynamics Division, Science Applications International Corporation, San Diego, California
Print Publication:
01 Aug 2008
DOI:
https://doi.org/10.1175/2008JAS2541.1
Page(s):
2749–2756
Restricted access

Abstract

A Fourier method is combined with a mesoscale model to simulate mountain waves. The mesoscale model describes the nonlinear low-level flow and predicts the emerging wave field above the mountain. This solution serves as the lower boundary condition for the Fourier method, which follows the waves upward to much higher altitudes and downward to the ground to examine parameterizations for the orography and the lower boundary condition. A high-drag case with a Froude number of ⅔ is presented.

Corresponding author address: John Lindeman, College of Science, George Mason University, 4400 University Dr., Fairfax, VA 22030-4444. Email: jlindema@gmu.edu

Abstract

A Fourier method is combined with a mesoscale model to simulate mountain waves. The mesoscale model describes the nonlinear low-level flow and predicts the emerging wave field above the mountain. This solution serves as the lower boundary condition for the Fourier method, which follows the waves upward to much higher altitudes and downward to the ground to examine parameterizations for the orography and the lower boundary condition. A high-drag case with a Froude number of ⅔ is presented.

Corresponding author address: John Lindeman, College of Science, George Mason University, 4400 University Dr., Fairfax, VA 22030-4444. Email: jlindema@gmu.edu

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