Banquet
发表于 2025-3-23 12:02:20
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mortgage
发表于 2025-3-23 17:49:07
Digital Filter Initialization,ng of numerical weather prediction. The most popular method of initialization up to recently was normal mode initialization, or NMI (.). This has been used in many NWP centres, and has performed satisfactorily. Its most natural context is for global models, for which the horizontal structure of the
ECG769
发表于 2025-3-23 21:35:09
Treating Model Error in 3-D and 4-D Data Assimilation, current and future states of the system. In operational schemes for atmosphere and ocean forecasting, the model equations are generally assumed to be a ‘perfect’ representation of the true dynamical system and are treated as strong constraints in the assimilation process. The model equations do not
技术
发表于 2025-3-23 23:30:13
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谷物
发表于 2025-3-24 05:27:07
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外向者
发表于 2025-3-24 09:59:37
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myalgia
发表于 2025-3-24 11:57:05
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吹牛大王
发表于 2025-3-24 17:55:12
Introduction to Initialization,e examined and the causes of spurious oscillations are elucidated. The history of methods of eliminating high-frequency noise is recounted and various initialization methods axe described. The normal mode initialization method is described, and illustrated by application to a simple mechanical system, the swinging spring.
adequate-intake
发表于 2025-3-24 22:32:32
Digital Filter Initialization,normal modes corresponds to the Hough functions, the eigenmodes of the Laplace Tidal Equations. For limited area models, normal modes can also be derived, but the lateral boundaries force the introduction of simplifying assumptions.
遭遇
发表于 2025-3-24 23:36:58
Treating Model Error in 3-D and 4-D Data Assimilation,, in practice, represent the system behaviour exactly, however, and model errors arise due to lack of resolution and inaccuracies in physical parameters, boundary conditions and forcing terms. Errors also occur due to discrete approximations and random disturbances.