Abstract
Results on the accuracy of SeaSonde High Frequency (HF) radar wind direction measurements in the Gulf of Naples (Southern Tyrrhenian Sea, Central Mediterranean Sea) are here presented. The investigation was carried out for a winter period (2 February–6 March) and for one summer month (August) of the reference year 2009. HF radar measurements were compared with in situ recordings from a weather station and with model data, with the aim of resolving both small scale and large scale dynamics. The analysis of the overall performance of the HF radar system in the Gulf of Naples shows that the data are reliable when the wind speed exceeds a 5 m/s threshold. Despite such a limitation, this study confirms the potentialities of these systems as monitoring platforms in coastal areas and suggests further efforts towards their improvement.
Highlights
IntroductionDifferent kinds of High Frequency (HF) radar (HFr) systems are being extensively used for surface ocean remote sensing [2]
The possibility of obtaining information related to the surface dynamics of coastal areas, with synoptic measurements of currents, waves and wind, allows the implementation of an active surveillance system that can cover different fields, including: oil spill transport, marine renewables, navigational safety, water quality and tsunami detection, and several other applications in the areas of physical oceanography, marine ecology and coastal zone management [1].Different kinds of High Frequency (HF) radar (HFr) systems are being extensively used for surface ocean remote sensing [2]
We provide the first test of the wind direction performance of the High Frequency radar (HFr) system installed in the Gulf of Naples (GoN; Southern Tyrrhenian Sea, Central Mediterranean) (Figure 1)
Summary
Different kinds of High Frequency (HF) radar (HFr) systems are being extensively used for surface ocean remote sensing [2]. They are located on the coast and transmit radio waves out to sea that are scattered from surface ocean waves, generating a received signal that is Doppler shifted by the underlying surface current. The amplitude and Doppler shifts of the backscattered signal can be analyzed to provide measurements of surface currents, waves and winds direction [3]. Direction-finding HFrs, like the SeaSonde manufactured by CODAR Ocean Sensors Ltd., are compact systems using a monopole and cross-loop as a 4.0/).
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