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| Titel |
Assimilation of SLA along track observations in the Mediterranean with an oceanographic model forced by atmospheric pressure |
| VerfasserIn |
S. Dobricic, C. Dufau, P. Oddo, N. Pinardi, I. Pujol, M.-H. Rio |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1812-0784
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| Digitales Dokument |
URL |
| Erschienen |
In: Ocean Science ; 8, no. 5 ; Nr. 8, no. 5 (2012-09-18), S.787-795 |
| Datensatznummer |
250005869
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| Publikation (Nr.) |
 copernicus.org/os-8-787-2012.pdf |
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| Zusammenfassung |
| A large number of SLA observations at a high along track horizontal
resolution are an important ingredient of the data assimilation in the
Mediterranean Forecasting System (MFS). Recently, new higher-frequency SLA
products have become available, and the atmospheric pressure forcing has
been implemented in the numerical model used in the MFS data assimilation
system. In a set of numerical experiments, we show that, in order to obtain
the most accurate analyses, the ocean model should include the atmospheric
pressure forcing and the observations should contain the atmospheric
pressure signal. When the model is not forced by the atmospheric pressure,
the high-frequency filtering of SLA observations, however, improves the
quality of the SLA analyses. It is further shown by comparing the power
density spectra of the model fields and observations that the model is able
to extract the correct information from noisy observations even without
their filtering during the pre-processing. |
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