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Volume 7, issue 4
Ocean Sci., 7, 521–532, 2011
https://doi.org/10.5194/os-7-521-2011
© Author(s) 2011. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue: ECOOP (European Coastal-shelf sea Operational Observing and...

Ocean Sci., 7, 521–532, 2011
https://doi.org/10.5194/os-7-521-2011
© Author(s) 2011. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 31 Aug 2011

Research article | 31 Aug 2011

Coastal sea responses to atmospheric forcings at two different resolutions

Z. B. Klaić1, Z. Pasarić1, G. Beg Paklar2, and P. Oddo3 Z. B. Klaić et al.
  • 1Andrija Mohorovičić Geophysical Institute, Department of Geophysics, Faculty of Science, University of Zagreb, Zagreb, Croatia
  • 2Institute of Oceanography and Fisheries, Split, Coratia
  • 3Istituto Nazionale di Geofisica e Vulcanologia, Bologna, Italy

Abstract. We investigated coastal sea responses to three, multi-day strong wind episodes that occurred in the middle Adriatic during the Target Operational Period (TOP) of the European COastal sea OPerational observing and forecasting system (ECOOP) project. A high-resolution oceanographic model (1 km horizontal, 16 σ vertical layers) based on the modified Princeton Ocean Model (POM) was applied to a highly complex domain located in the coastal area of the eastern Adriatic Sea. The oceanographic model was nested into the Adriatic REGional model (AREG-2) covering the entire Adriatic Sea. Meteorological forcing was prepared by two atmospheric models. The coarser model was the European Centre for Medium-range Weather Forecast model (ECMWF, with horizontal and temporal resolutions of 0.25° and 6 h, respectively), and the finer one was the Aire Limitée Adaptation dynamique Développement InterNational model (ALADIN, with horizontal and temporal resolutions of 8 km and 3 h, respectively, and winds dynamically adapted to a horizontal resolution of 2 km). The results show that small-scale atmospheric features, which arise due to the orographically complex mainland and the number of islands and were not reproduced by the coarser atmospheric model, substantially affected surface currents, mass transports, sea surface temperature (SST) and surface salinity in the coastal area during strong Bora. For strong Sirocco, the atmospheric model's resolution was important for currents on the lee sides of islands.

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