Presentation Evolution of the Shipboard Automatic Weather Station

Presentation & Evolution of the Shipboard Automatic Weather Station BATOS TECO 2005 - BUCAREST

General description of the systems Technical information about the components Current network at Météo France Future work

General description Screen Satellite communication Weather sensors

General description Automatic acquisition of the basic weather parameters measured by sensors (pression, air and sea surface temperature, humidity, wind) Input of human weather observations Data check, processing and storage Generation and transmission of normalized encoding messages (via satellite) Display of the parameters

General description and evolution

Technical Information

Pressure, Temperature and Humidity PTB 220 & HMP 35 DE (Vaisala) q Pressure 800 to 1100 h. Pa q q Air temperature -30 to +50 °C Relative humidity 0, 8 to 100 % BATOS II : PTU 200

Water temperature PT 100 – SPCK PROSENSOR n Hull contact sensor (WMO recommandation) (platinium resistor temperature sensor) n -80 to +160 °C

Wind Speed and Direction n n Measures speed and direction (relatively to the ship) True direction calculated by the software (using speed, heading and the true rout of the vessel) Young 05106 • Resolution: 0. 2 kn • Useful range: 0 to 120 kn • Wind direction resolution : 3 degrees BATOS II : CV 3 F Ultrasonic Wind Sensor (LCJ Capteurs) New generation wind speed and wind direction measurement device • Resolution: 0. 1 kn • Useful range: 0. 5 to 99. 5 kn • Wind direction resolution : 0. 1 degree • Temperature range : 0 to 40°C

Screen Miniature marine SOCRIMA Naturally ventilated multi-plate screen providing a good protection of temperature and humidity sensor Enclosure : 20 cm (D) x 50 cm (H) To be installed on the deck

Software Checks the measurement to ensure data quality Generates normalized weather messages (code 41) every 1, 3 or 6 hours Sends on automatically the messages via satellite Data storage (hourly, during 6 months) Sensor data display in real-time and help for human observation capture

Communication Thrane & Thrane Inmarsat Mini C Thrane & Thrane TT-3026 M comprising transceiver, omni-directional antenna and GPS receiver in one single unit

Current Network at Météo France

Current network at Météo France 30 BATOS set up on VOS (Volontary Observing Ship) in 2004 Increasing of the number of observations Robustness of the system Quality of the data

Current network at Météo France

Current network at Météo France

Future work Thermosalinometer for TRACKOB messages Data compression Transmission frequency adaptation

The End Direction des Systèmes d’Observation Département de l’Observation au Sol Division OCEan – V. UNGER vinciane. unger@meteo. fr