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Linear analysis of a simplified semi-implicit model with some ideas given regarding geostrophic adjustment, small grid length modeling, and vertical resolution
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1978
[PDF-8.18 MB]
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Description:"Various approximations have been used in numerical weather prediction models to allow the maximum useful time step, with economy being the guiding force. Among the approximations used are: the hydrostatic approximation--removing acoustic waves, the quasi-geostrophic approximation--removing gravity waves, and semi-implicit time differencing-- slowing down the phase speeds of gravity waves. In all cases it has been argued that the motions that were removed or whose accuracy was affected, were not essential to the meteorologically important fields"--Introduction.
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Content Notes:William G. Collins.
"January 1978."
"This is an unreviewed manuscript, primarily intended for informal exchange of information among NMC staff members."
System requirements: Adobe Acrobat Reader.
Includes bibliographical references (page 16).
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Rights Information:Public Domain
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Compliance:Library
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