Journal cover Journal topic
Ocean Science An interactive open-access journal of the European Geosciences Union
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
Research article
24 Feb 2017
Review status
This discussion paper is a preprint. A revision of the manuscript is under review for the journal Ocean Science (OS).
Dense water formation in the coastal northeastern Adriatic Sea: the NAdEx 2015 experiment
Ivica Vilibić1, Hrvoje Mihanović1, Ivica Janeković2,3, Clea Denamiel1, Pierre-Marie Poulain4, Mirko Orlić5, Natalija Dunić1, Vlado Dadić1, Mira Pasarić5, Stipe Muslim1, Riccardo Gerin4, Frano Matić1, Jadranka Šepić1, Elena Mauri4, Zoi Kokkini4, Martina Tudor6, Žarko Kovač1, and Tomislav Džoić1 1Institute of Oceanography and Fisheries, Split, Croatia
2Ruđer Bošković Institute, Zagreb, Croatia
3The University of Western Australia, School of Civil, Environmental and Mining Engineering & UWA Oceans Institute, Crawley WA, Australia
4Istituto Nazionale di Oceanografia e di Geofisica Sperimentale – OGS, Trieste, Italy
5University of Zagreb, Faculty of Science, Andrija Mohorovičić Geophysical Institute, Zagreb, Croatia
6Meteorological and Hydrological Service of Croatia, Zagreb, Croatia
Abstract. The paper investigates wintertime dynamics of the coastal northeastern Adriatic Sea, and is based on numerical modelling and in situ data collected through field campaigns executed during the winter and spring of 2015. The data have been collected by a variety of instruments and platforms (ADCPs, CTDs, glider, profiling float), and have been accompanied with a one-way coupled ALADIN/ROMS modelling effort. Research focus has been put on dense water formation (DWF), thermal changes and circulation, and water exchange between the coastal and open Adriatic. According to both observations and modelling results, dense waters are formed in the northeastern coastal Adriatic during cold bora outbreaks, even during milder-than-average winters (as was the winter of 2015). However, dense water formed in this coastal region has, due to lower salinities, lower densities than dense water formed at the open Adriatic. Since the sea is deeper in the coastal area than at the open Adriatic, dense waters from the open Adriatic occasionally enter the coastal area near the bottom of the connecting passages, while the surface flow is mostly outward from the coastal area. Median residence time of the coastal area is estimated to about 1–2 months, indicating that the coastal area may be relatively quickly renewed by the open Adriatic waters. The model significantly underestimates currents and transports in connecting channels, which may be a result of a too coarse resolution of atmospheric forcing, misrepresentation of bathymetry or absence of the air-sea feedback in the model. Obtained data represents a comprehensive marine dataset, pointing to a number of interesting phenomena to be investigated in the future.

Citation: Vilibić, I., Mihanović, H., Janeković, I., Denamiel, C., Poulain, P.-M., Orlić, M., Dunić, N., Dadić, V., Pasarić, M., Muslim, S., Gerin, R., Matić, F., Šepić, J., Mauri, E., Kokkini, Z., Tudor, M., Kovač, Ž., and Džoić, T.: Dense water formation in the coastal northeastern Adriatic Sea: the NAdEx 2015 experiment, Ocean Sci. Discuss.,, in review, 2017.
Ivica Vilibić et al.
Ivica Vilibić et al.
Ivica Vilibić et al.


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