Publication Date:
2020-02-24
Description:
Glider observations of temperature and salinity in the Ionian Sea (Eastern Mediterranean
Sea), made in the period October 2004-December 2004, were assimilated into an operational
forecasting model together with other in-situ and satellite observations. The impact of glider
data on the estimation of the circulation is studied and it is found that the assimilation of
glider data significantly improve the vertical structure of temperature and salinity fields and
remove biases. The accurate representation of the dynamical structures due to the assimilation
of glider data allowed a detailed analysis of the dynamics of the Atlantic Ionian Stream (AIS).
During autumn and in the Sicily Strait, the AIS is strengthened by the positive but weak wind
stress curl near the southern Sicilian coast and by the temperature gradient between the warm
surface mixed layer and the cold upwelled waters near Sicily. In winter the change of position
of the wind stress curl zero line and the cooling of the surface mixed layer forces the AIS to
shift southward in the Ionian Sea. The AIS is shown for the first time to pinch off an eddy in
the Ionian Sea.
Description:
Submitted
Description:
3.11. Oceanografia Operativa
Description:
3.7. Dinamica del clima e dell'oceano
Description:
JCR Journal
Description:
open
Keywords:
Ionian Sea circulation
;
glider observations
;
01. Atmosphere::01.01. Atmosphere::01.01.08. Instruments and techniques
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
manuscript
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