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HFR system name:


Spatial location:

Mediterranean Sea - Adriatic Sea - Gulf of Trieste (GoT)

Sites (frequency):

AURI 24.635, PIRA 24.525, IZOL 24.5, TRI1 24.525



Owning institution:


Operating institution:


EDMO code:

120, 1229, 1755, 1010

Contact names:

Laura Ursella; Branko Čermelj; Daniela Turk; Matjaž Ličer; Cardin Vanessa; Davide Lombardo; Deponte Davide; Simone Martini; Federico Pittaluga; Giorgio Bolzon; Damir Dezeljin

Contact emails:;;;;;;;;;;

Time coverage:

2021 - present

The NAdr network is a WERA HF Radar System, retrieving surface currents and waves every 30′ in the Gulf of Trieste (Northern Adriatic Sea). It is composed by four antennas emitting at a central frequency of 24.5 MHz. They produce data every 30 minutes, with spatial resolution of 1.5 km and maximum radial coverage of about 35-40 km. Surface ocean velocities estimated by HF Radar are representative of the upper 0.3-2.5 meters of the ocean. The Totals are the combination of the HFR data of the stations AURI and PIRA until 01/03/2023. The station IZOL was added on 01/03/2023 and the station TRI1 on 10/07/2023 .
P. Lorente, E. Aguiar, M. Bendoni, M. Berta, C. Brandini, A. Cáceres-Euse, F. Capodici, D. Cianelli, G. Ciraolo, L. Corgnati, V. Dadic ́, B. Doronzo, A. Drago, D. Dumas, P. Falco, M. Fattorini, A. Gauci, R. Gómez, A. Griffa, C.-A. Guérin, I. Hernández-Carrasco, J. Hernández-Lasheras, M. Licˇer, M. G. Magaldi, C. Mantovani, H. Mihanovic ́, A. Molcard, B. Mourre, A. Orfila, A. Révelard, E. Reyes, J. Sánchez, S. Saviano, R. Sciascia, S. Taddei, J. Tintoré, Y. Toledo, L. Ursella, M. Uttieri, I. Vilibic ́,E. Zambianchi, and V. Cardin, 2022. Coastal high-frequency radars in the Mediterranean – Part 1: Status of operations and a framework for future development. Ocean Sci., 18, 761–795, 2022
Reyes, E., Aguiar, E., Bendoni, M., Berta, M., Brandini, C.,Cáceres-Euse, A., Capodici, F., Cardin, V., Cianelli, D., Ciraolo,G., Corgnati, L., Dadi´c, V., Doronzo, B., Drago, A., Dumas, D.,Falco, P., Fattorini, M., Fernández, M. J., Gauci, A., Gómez, R.,Griffa, A., Guérin, C.-A., Hernández-Carrasco, I., Hernández-Lasheras, J., Liˇcer, M., Lorente, P., Magaldi, M. G., Mantovani, C., Mihanovi´c, H., Molcard, A., Mourre, B., Révelard, A., Reyes-Suárez, C., Saviano, S., Sciascia, R., Taddei, S., Tintoré, J., Toledo, Y., Uttieri, M., Vilibi´c, I., Zambianchi, E., and Orfila, A.: Coastal high-frequency radars in the Mediterranean – Part 2: Applications in support of science priorities and societal needs, Ocean Sci., 18, 797–837,, 2022.
Reyes Suárez, N. C., Tirelli, V., Ursella, L., Ličer, M., Celio, M., and Cardin, V., 2022: Multi-platform study of the extreme bloom of the barrel jellyfish Rhizostoma pulmo (Cnidaria: Scyphozoa) in the northernmost gulf of the Mediterranean Sea (Gulf of Trieste) in April 2021, Ocean Sci., 18, 1321–1337,, 2022. 
Ličer, M., Estival, S., Reyes-Suarez, C., Deponte, D., and Fettich, A.: Lagrangian modelling of a person lost at sea during the Adriatic scirocco storm of 29 October 2018, Nat. Hazards Earth Syst. Sci., 20, 2335–2349,, 2020.
Flora, S., Ursella, L., and Wirth, A.: Superstatistical analysis of sea surface currents in the Gulf of Trieste, measured by high-frequency radar, and its relation to wind regimes using the maximum-entropy principle, Nonlin. Processes Geophys., 30, 515–525,, 2023.

OGS, NIB, ARSO, & ARPA FVG. (2023). HFR-NAdr (High Frequency Radar NAdr network). European HFR-Node.

Operating Institution:

The HF Radar Network has been designed, implemented and managed through the efforts of OGS-Trieste, NIB-Piran, ARSO-Slovenia, ARPA FVG.