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Diagnosis of noise in the NMC Global Model using a time filter
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1974
[PDF-1.07 MB]
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Description:"A preliminary description of the noise oscillations in the NMC 8L GLOBAL model has been given in an earlier Office Note (McPherson and Stackpole, 1973). By examining the temporal behavior of pressure and height variables at individual grid points, three significant components of the noise were identified on the basis of differences in amplitude and period. One has small amplitude (5-10 m) and short period (2-3 hours), another has larger amplitude (10-25 m) and longer period (6-7 hours), and the third possesses an amplitude ranging from 20 to 40 m and a period of approximately 10-14 hours. All three were described as external gravity modes, since their phases did not vary with height, at least through 300 mb"--Introduction.
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Content Notes:Ronald D. McPherson, Robert E. Kistler, Clifford H. Dey.
"January 1974."
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Rights Information:Public Domain
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