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Status of experiments with a 6-hour analysis/forecast cycle
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1976
[PDF-1.95 MB]
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Description:"During the summer of 1975, Data Assimilation Branch conducted a 6-hour cycle experiment. The configuration of the analysis/forecast cycle was identical to that of the NMC final cycle except that the update frequency was doubled; analyses were produced at 6-hour rather than 12-hour intervals. The forecast model used in the NMC final cycle is an 8-layer global prediction model (Stackpole, et al., 1974), and the analysis model used is a three-dimensional spectral objective analysis (Flattery, 1970). The experiment began from the 00 GMT April 10, 1975 NMC final analysis and thereafter was completely independent of the NMC final cycle. After six days the troposphere over Antarctica had exhausted in the forecast model, and the experiment was terminated"--Page 1.
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Content Notes:Glenn E. Rasch, Ronald D. McPherson.
"April 1976."
"This is an unreviewed manuscript, primarily intended for informal exchange of information among NMC staff members."
System requirements: Adobe Acrobat Reader.
Includes bibliographical references (pages 12-13).
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Rights Information:Public Domain
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Compliance:Library
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