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The Northern Adriatic Experiment 2015: setup and preliminary results

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Presentation on theme: "The Northern Adriatic Experiment 2015: setup and preliminary results"— Presentation transcript:

1 The Northern Adriatic Experiment 2015: setup and preliminary results
Ivica Vilibić Institute of Oceanography and Fisheries, Split, Croatia

2 Motivation Dense water formation has been observed and modelled in the coastal northerastern Adriatic during an extraordinary winter of Janeković et al., JGR, 2014

3 NAdEx setup ADCPs (IOF, IRB): CTD (IOF):
A1: 3 Dec 2014 – 14 Aug 2015 A2: 3 Dec 2014 – 26 May 2015 A3: malfunction (T-p data only) A4: 20 Nov 2014 – 5 Jul 2015 A5: 4 Dec 2014 – 14 Aug 2015 A6: 4 Dec 2014 – 9 Aug 2015 A7: 20 Nov 2014 – 3 Aug 2015 A8: 20 Nov 2014 – 7 Aug 2015 A9: 20 Nov 2014 – 7 Aug 2015 CTD (IOF): 3-6 Dec 2014 27-30 May 2015 Towed undulator (AMGI, IRB): Mar 2015 Glider (OGS): Feb 2015 Operational model (IRB, MHS): ROMS/ALADIN-HR: nested into the Adriatic model, resolution 500 m Arvor-C (OGS): 19 Feb – 15 Mar 2015 Drifters (OGS): released at 13 locations on and 19 Feb 2015

4 NAdEx results Kvarnerić transect at 3-6 Dec 2014 (up) and May 2015 (down)

5 T-S-PDA series measured at A stations (lp 33 h)
NAdEx results T-S-PDA series measured at A stations (lp 33 h)

6 Arvor-C measurements (Kvarner Bay)
NAdEx results Arvor-C measurements (Kvarner Bay)

7 Glider measurements (off Kvarner Bay)
NAdEx results Glider measurements (off Kvarner Bay)

8 ADCP currents at A1 to A9 stations, measured (red) and modelled (blue)
NAdEx results ADCP currents at A1 to A9 stations, measured (red) and modelled (blue)

9 Model verification on CTD data
NAdEx results Model verification on CTD data

10 Model verification on glider and float data
NAdEx results Model verification on glider and float data

11 Model verification on A stations
NAdEx results Model verification on A stations

12 Stratification index before and after bora events
NAdEx results Stratification index before and after bora events

13 NAdEx results Dense water normal fluxes (up) and transports (down) at connecting passages

14 Conclusions So, which next steps are foreseen for investigations of the NAdEx area? dynamics of the thermohaline front that stretches from Kvarner Bay towards the open Adriatic, which is found highly variable in time, also resembling a near-diurnal wave-like oscillations (as seen by drifters) high-frequency phenomena have been observed in coastal waters, presumably being a result of inertial, tidal (barotropic and baroclinic), topographic (the Adriatic seiche of 21.5 h) and advective processes strongly influenced by the complex coastal topography NAdEx area and the data are a perfect for testing and improving of performance of numerical models in a complex region What else?

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