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Smoothing and interpolation in LFM-II output
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1978
[PDF-1.20 MB]
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Description:Joe Gerrity and Jack Newell found that by adding the so-called G-smoother on the output grid ([delta] = 190.5 km at 60N) they reduced the noise in a very noisy 500 mb vorticity field. In eyeballing the charts, with and without the final G-smoother, I estimate about 2/3 of the noise is removed. The G-smoother in one dimension can be broken down into three elements, v = ¹/₂,¹/₂, -1 . Here v is Shuman's (1957) smoothing index and is twice the weight applied to the outer two points of a 3-point smoothing operator.
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Content Notes:Frederick G. Shuman.
"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 5).
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Rights Information:Public Domain
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Compliance:Library
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