The Galicia HF experience, part 2: scientific output and analysis of the benefits of the technology
Enrique Álvarez Fanjul1, Marta de Alfonso Alonso 1,
José Damián López 1, Ana Julia Abascal 2, María Inmaculada Ferrer Sanz 3,
Justo Conde Criado 4, Andres Alonso Martirena 5
Puertos del Estado
Universidad de Cantabria
Instituto Nacional de Meteorología
Two long-range CODAROS SeaSonde HF radar stations were installed and
operated for three months (Nov 2005 to Feb 2006) in the Galician coast,
the main area affected by Prestige disaster. During this period, all
the produced data were freely distributed in real time via Internet.
The dissemination system was fully integrated with the Puertos del
Estado web products, which are providing real time data of several
oceanographic and atmospheric parameters, such as sea level and waves.
One of the buoys of the Puertos del Estado Deep Water network, equipped
with a current meter, is moored in the area covered by the Radar system.
Analysis of the three months of data show good correlation between both
sources of information (RMS of 5.11 cm/s for u component and 6.67 cm/s
for v). Additionally, a lagrangian buoy was released in the area in
order to analyze the benefit of employing HF radar currents for the
tracking of drifting objects. The trajectory of the buoy was analyzed
in the frame of ESEOO project. A particle model was employed with and
without the use of HF radar currents. Results of the experiment clearly
show a positive impact of the use of measured currents. When using HF
data, the search and rescue areas are reduced, in average, a 49%. In
this work, results from this experience will be analyzed in detail,
making special focus in the scientific aspects of the comparison with
the moored and drifting buoys.