Summary
An attempt is made to study certain characteristic features of the “ynamic initialization“ (DI) technique, incorporating the averaging scheme. The limited area barotropic version of the primitive equation model is used. Numerical experiments are performed by varying the number of time-steps during the iterations,N, from 3 to 7. It is found that forN = 5, the least ageostrophic wind component (Area-mean value) is obtained. However, the least “noise” is generated during the time-integration, forN= 6, which also gives the best predicted fields. These features are discussed.
Zusammenfassung
Es werden bestimmte charakteristische Merkmale der dynamischen Initialisationstechnik (DI) mit Einbeziehung des Mittelungsschemas untersucht. Die auf ein begrenztes Gebiet bezogene barotrope Version des primitiven Gleichungsmodells wird angewendet. Numerische Experimente werden mit Variierung der Zahl der Zeitschritte der IterationN, von 3 bis 7 durchgeführt. Es wurde gefunden, daß fürN = 5 die kleinste ageostrophische Windkomponente (Gebietsmittelwert) erhalten wird. Der kleinste „Lärm” wird jedoch bei der Zeitintegration fürN = 6 erzeugt, was demnach die besten vorhergesagten Felder ergibt. Diese Merkmale werden besprochen.
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Sinha, S., Kulkarni, P.L. Application of the dynamic initialization technique to a primitive equation model. Arch. Met. Geoph. Biocl. A. 31, 91–104 (1982). https://doi.org/10.1007/BF02257744
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DOI: https://doi.org/10.1007/BF02257744