Technical Note: Spectral representation of spatial correlations in variational assimilation with grid point models and application to the Belgian Assimilation System for Chemical Observations (BASCOE)
The formulation of the background error covariances represented in the spectral space is discussed in the context of univariate assimilation relying on a grid point model, leaving out all the aspects of balances between the different control variables needed in meteorological assimilation. The spectral transform operations are discussed in the case of a spherical harmonics basis and we stress that there is no need for an inverse spectral transform and of a Gaussian grid. The analysis increments are thus produced directly on the model grid. The practice of producing analysis increments on a hor... Mehr ...
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Dokumenttyp: | Artikel |
Erscheinungsdatum: | 2012 |
Verlag/Hrsg.: |
Copernicus Publications
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Schlagwörter: | article / Verlagsveröffentlichung |
Sprache: | Englisch |
Permalink: | https://search.fid-benelux.de/Record/base-26512846 |
Datenquelle: | BASE; Originalkatalog |
Powered By: | BASE |
Link(s) : | https://doi.org/10.5194/acp-12-10015-2012 |