Assimilation of satellite AVHRR SST in an OGCM of the Mediterranean Sea: data processing, new parametrizations, and physical results

Vincenzo Artale; Fabrizio D'Ortenzio; Daniele Iudicone; Salvatore Marullo; Volfango Rupolo; Rosalia Santoleri

doi:10.1117/12.332715

11 December 1998 Assimilation of satellite AVHRR SST in an OGCM of the Mediterranean Sea: data processing, new parametrizations, and physical results

Vincenzo Artale, Fabrizio D'Ortenzio, Daniele Iudicone, Salvatore Marullo, Volfango Rupolo, Rosalia Santoleri

Author Affiliations +

Proceedings Volume 3496, Earth Surface Remote Sensing II; (1998) https://doi.org/10.1117/12.332715
Event: Remote Sensing, 1998, Barcelona, Spain

Abstract

OGCM's numerical experiments for climatic studies can be performed only after testing their capability to well represent the today ocean circulation. In order to improve the model results we assimilated satellite SST (from NOAA-AVHRR sensors) by means of a nudging method. Daily 1987 - 1992 NASA Pathfinder SST have been interpolated in time and space by means of an objective analysis algorithm to fill gaps in the time series. These data were analyzed to investigate the main variability of the Mediterranean SST field. The 1988 data was selected to be assimilated in the OGCM. To relate more closely the assimilation of the SST data to the physics of the air-sea interaction, here we propose a new parameterization of the surface relaxation time. Actually the use of realistic surface forcing strongly contribute to reproduce the correct hydrological values of the Mediterranean water masses, the right energetic basin budgets and the mesoscale features of the Mediterranean circulation.

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Vincenzo Artale, Fabrizio D'Ortenzio, Daniele Iudicone, Salvatore Marullo, Volfango Rupolo, and Rosalia Santoleri "Assimilation of satellite AVHRR SST in an OGCM of the Mediterranean Sea: data processing, new parametrizations, and physical results", Proc. SPIE 3496, Earth Surface Remote Sensing II, (11 December 1998); https://doi.org/10.1117/12.332715

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