CIMO-TECO 2016, Madrid, Spain
ROYAUME DU MAROC
MINISTERE DELEGUE AUPRES DU MINISTRE DE L’ENERGIE, DES MINES, DE L’EAU ET DE L’ENVIRONNEMENT, CHARGE DE L’EAU
DIRECTION DE LA METEOROLOGIE NATIONALE
HF radar pilot project in Morocco
Hassan Bouksim, Rabia Merrouchi & Taoufik Zaidouni
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CIMO-TECO 2016, Madrid, Spain
OVERVIEW• Introduction• Objectives• Composition• HF radars Operating Principle• Project phases• HF Radar Installation (equi install & APM)• HF Radar products• Challenges of the technology• Data Validation• Perspectives
CIMO-TECO 2016, Madrid, Spain
Introduction• Morocco is a marine country (2
facades, 3500 km Coasts)• lack of marine observational data
(ship, sat, buoy)• several in situ equipment were
quickly lost (severe marine conditions, difficulties relating to monitoring and maintenance)
• Maritime Equipment strategy, recommends giving priority to remote sensing and to develop the use of satellite observation data.
• HF radar project is just part of this strategy.
44 Synoptic WS4 Upper air WS156 Automatic WS7 Weather Radar
CIMO-TECO 2016, Madrid, Spain
Objectives• strengthen real-time monitoring of marine
environment by measuring oceanic parameters (currents and waves)
• enhance marine weather warning and accordingly, contribute to the safety of maritime navigation and conduct of Search and Rescue operations at Sea.
• coastal protection and the prevention of environmental risks (marine pollution)
• model assimilation and validation, • complement the climatology of the area and
improve the knowledge of the hydrodynamics.
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CIMO-TECO 2016, Madrid, Spain
Composition• Two radars operating in the High Frequency 5MHz
with a range of 200km. Each site contains a transmitter, a receiver and a control computer.
• Central platform of Data Management consists of :a server "COMBINE" which collects data from sites
and generates 2D maps of surface current (with server Backup),
Marine information server "PORTUS" which processes the information and transforms it into value-added products, integrating measured data into information products, accessible through a multi-user web server (with Backup server).
CIMO-TECO 2016, Madrid, Spain
CIMO-TECO 2016, Madrid, Spain
HF Radar PrincipleActive instrument, with a transmitter and a receiver, measures the speed of movement of a target moving away or approaching the radar. The principle of Bragg resonance shows that the echo is maximum for waves whose wavelength is equal to half the incident wavelength.
CIMO-TECO 2016, Madrid, Spain
HF Radar Principle
CIMO-TECO 2016, Madrid, Spain
First Ordre Bragg peaksused for surface current(Approachingor retreating)
Second Bragg peaks used for waves(Approachingor retreating)
HF Radar Principle
CIMO-TECO 2016, Madrid, Spain
Project phases• HF radar project began in late 2014. Some milestones :• April, 2015: Start of field work• July, 2015: Authorization of the frequency from the
National Telecommunications Regulatory Agency.• September to October, 2015: Trainings• October, 2015: Equipment delivery• November, 2015: Installation of Casablanca Radar • February, 2016: Installation of Temara radar • March 03, 2016: Installation and Commissioning• March 30, 2016: Provisional acceptance
CIMO-TECO 2016, Madrid, Spain
HF Radar Installation Installation
• The HF radar equipment was installed at two locations, Casablanca port (National Port Agency) and Rabat (Civil Protection Command of Temara).
CIMO-TECO 2016, Madrid, Spain
HF Radar Installation Antenna Pattern Measurment
• APM data processing shows normal and consistent data, with a little distortion to the NE of Casablanca antenna which can be generated by the main port breakwater, the VTS tower or other existing sources of distortion.
CIMO-TECO 2016, Madrid, Spain
HF Radar products2D Maps of Surface Current
CIMO-TECO 2016, Madrid, Spain
HF Radar productsWaves on concentric arcs
CIMO-TECO 2016, Madrid, Spain
HF Radar productsTime Series of Wave Characteristics
CIMO-TECO 2016, Madrid, Spain
HF Radar productsFloating objects drifting map
CIMO-TECO 2016, Madrid, Spain
Challenges
• Selecting of suitable sites (open place away from electromagnetic pollution and climatic hazards, telecommunication, power supply, secure and easily accessible.
• Mastery of this new technology and knowledge of its limits, to better interpret the HF radar information.
CIMO-TECO 2016, Madrid, Spain
Challenges• For example: Impact of solar activity
during 11 and 13 April 2016.Temara Morocco
Silleiro Spain
16,56m
CIMO-TECO 2016, Madrid, Spain
Challenges• Change of physical and electromagnetic
environment of the sitesNovember 2015 during installation July 2016
CIMO-TECO 2016, Madrid, Spain
Data Validation
Courtesy of Hugh Roarty (Rutgers University)
CIMO-TECO 2016, Madrid, Spain
Data Application
CIMO-TECO 2016, Madrid, Spain
Data Application
Courtesy of Hugh Roarty (Rutgers University)
CIMO-TECO 2016, Madrid, Spain
Data ValidationHs Radar vs Hs WW3
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Data ValidationHs Radar vs Hs WW3
Scatterplot of HsRad vsHsWW3Mean Square Error (MSE) of Hs: 0.22mRoot Mean Square Error (RMSE): 0.47mMean Absolute Error (MAE): 0.35m
Good correlation of significant wave height (0.84)
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Data ValidationHs Radar vs Hs WW3
Scatterplot of TsRad vs TsWW3MSE of Ts: 3.86s
RMSE: 1.97sMAE: 1.60s
Periods are generally overestimated
Scatterplot of DirRad vs DirWW3Mean Error of Wave Direction: -10.16°, an underestimation of WW3 direction.RMSE: 23.13°MAE: 18.34°
CIMO-TECO 2016, Madrid, Spain
Perspectives• Further validation by in-situ data.• Integration of operational models in DMN,
including surface wind parameters and waves characteristics.
• HF radar network extension south to cover the energy port of Jorf Lasfar,
• Extension to the Gibraltar Strait by installing two HF radars on Tanger Med and Cap Malabataand data exchange with Spain to cover the Strait.
CIMO-TECO 2016, Madrid, Spain
Perspectives2011 / Punta Carnero 25 MHz
SeaSonde
2012 / Tarifa 25 MHz SeaSonde
2011 / Ceuta 25 MHz SeaSonde
Spain HF Radar
CIMO-TECO 2016, Madrid, Spain
Cover with 2 radars Total cover with spain radars
Perspectives
CIMO-TECO 2016, Madrid, Spain
• Thank you for your attention