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Some experiments in dynamic initialization for a simple primitive equation model
Author(s) -
Temperton C.
Publication year - 1973
Publication title -
quarterly journal of the royal meteorological society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.744
H-Index - 143
eISSN - 1477-870X
pISSN - 0035-9009
DOI - 10.1002/qj.49709942009
Subject(s) - initialization , simple (philosophy) , scheme (mathematics) , interval (graph theory) , mathematics , computer science , euler's formula , algorithm , mathematical analysis , combinatorics , philosophy , epistemology , programming language
A number of experiments in dynamic initialization are carried out within the framework of a relatively simple primitive equation model. Some previously suggested variants of initialization schemes based on the Euler‐backward timestep are tested and found wanting. A new scheme is proposed, based on averaging the solutions of the primitive equations at time‐levels separated by a small interval. This scheme is tested, with encouraging results. Theoretical considerations and experimental evidence indicate that both mass‐to‐wind and wind‐to‐mass adjustment should be catered for in a dynamic initialization scheme. This facility can easily be incorporated into the scheme proposed here, and tests confirm the advantages of doing so.