Journal cover Journal topic
Ocean Science An interactive open-access journal of the European Geosciences Union
Ocean Sci., 3, 149-157, 2007
https://doi.org/10.5194/os-3-149-2007
© Author(s) 2007. This work is licensed under
the Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License.
 
08 Mar 2007
Daily oceanographic analyses by Mediterranean Forecasting System at the basin scale
S. Dobricic1, N. Pinardi2, M. Adani1, M. Tonani1, C. Fratianni1, A. Bonazzi1, and V. Fernandez1 1Istituto Nazionale di Geofisica e Vulcanologia, Sezione di Bologna, Italy
2Centro Interdipartimentale di Ricerche per le Scienze Ambientali, Ravenna, Italy
Abstract. This study presents the upgrade of the Optimal Interpolation scheme used in the basin scale assimilation scheme of the Mediterranean Forecasting System. The modifications include a daily analysis cycle, the assimilation of ARGO float profiles, the implementation of the geostrophic balance in the background error covariance matrix and the initialisation of the analyses. A series of numerical experiments showed that each modification had a positive impact on the accuracy of the analyses: The daily cycle improved the representation of the processes with the temporal variability shorter than a week, the assimilation of ARGO floats profiles significantly improved the salinity analyses quality, the geostrophically balanced background error covariances improved the accuracy of the surface elevation analyses, and the initialisation removed the barotropic adjustment in the forecast first time steps starting from the analysis.

Citation: Dobricic, S., Pinardi, N., Adani, M., Tonani, M., Fratianni, C., Bonazzi, A., and Fernandez, V.: Daily oceanographic analyses by Mediterranean Forecasting System at the basin scale, Ocean Sci., 3, 149-157, https://doi.org/10.5194/os-3-149-2007, 2007.
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