Wintertime dynamics in the coastal northeastern Adriatic Sea: the NAdEx 2015 experiment
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Published:2018-03-23
Issue:2
Volume:14
Page:237-258
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ISSN:1812-0792
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Container-title:Ocean Science
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language:en
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Short-container-title:Ocean Sci.
Author:
Vilibić IvicaORCID, Mihanović Hrvoje, Janeković Ivica, Denamiel Cléa, Poulain Pierre-Marie, Orlić Mirko, Dunić Natalija, Dadić Vlado, Pasarić Mira, Muslim Stipe, Gerin Riccardo, Matić FranoORCID, Šepić Jadranka, Mauri ElenaORCID, Kokkini Zoi, Tudor MartinaORCID, Kovač Žarko, Džoić Tomislav
Abstract
Abstract. The
paper investigates the 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 were collected with a variety of instruments and platforms
(acoustic Doppler current
profilers, conductivity–temperature–depth probes, glider, profiling float)
and are accompanied by the atmosphere–ocean ALADIN/ROMS modelling system.
The research focused on the dense-water formation (DWF), thermal changes,
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. However, the
dense water formed in this coastal region has lower densities than the dense
water formed in the open Adriatic due to lower salinities. Since the coastal
area is deeper than the open Adriatic, the observations indicate (i) balanced
inward–outward exchange at the deep connecting channels of denser waters
coming from the open Adriatic DWF site and less-dense waters coming from the
coastal region and (ii) outward flow of less-dense waters dominating in the
intermediate and surface layers. The latter phenomenon was confirmed by the
model, even if it significantly underestimates the currents and transports in
the connecting channels. The median residence time of the coastal area is
estimated to be approximately 20 days, indicating that the coastal area may
be renewed relatively quickly by the open Adriatic waters. The data that were
obtained represent a comprehensive marine dataset that can be used to
calibrate atmospheric and oceanic numerical models and point to several
interesting phenomena to be investigated in the future.
Funder
Hrvatska Zaklada za Znanost Seventh Framework Programme
Publisher
Copernicus GmbH
Subject
Cell Biology,Developmental Biology,Embryology,Anatomy
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