data buoy cooperation panel scientific and technical workshop scripps institution of oceanography la...
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Data Buoy Cooperation PanelScientific and Technical Workshop
Scripps Institution of OceanographyLa Jolla, CA
Recent Buoy Developments at NOAA/NOS/CO-OPSOcean Systems Test & Evaluation Program
Mark Bushnell, Kate Bosley, Tammy Graff, Warren Krug NOAA/NOS/CO-OPS
October 16, 2006
Current profiles inShipping channels
Updated every 6 min
Radio link to shore
Aids TO Navigation (ATON) Acoustic Doppler Current Profiler (ADCP)
Part of NOS/CO-OPS PORTS
““Not to Interfere” CONSIDERATIONSNot to Interfere” CONSIDERATIONS
Deployed/recovered with buoy on station Entire package removed prior to ATON
servicing All similar metals
and coloration Minimal alteration
of buoy profile
and characteristics
No obvious bias in ATONMean difference ~ 3cm/s
Speeds compare very well, within anticipated error of individual instruments
GPS COMPASS CALIBRATIONGPS COMPASS CALIBRATION
GOALSRotate GPS compass and Nortek to determine the effectiveness of the Nortek compass calibration
algorithm
Evaluate potential for GPS compass calibration of the Nortek
Thales GPS Compass10 Hz compass sampling rate,
1 sec average
Nortek1 sec compass sampling rate
Comparison of current direction to a bottom-mounted ADCPimproves with increasing speed
much of the difference is real spatial variability
BATTERY LIFE
Easily achieve 180 day deployment with 0.1 watt Radio
1 watt radio required further power saving modifications,297 days and counting.
ATON ADCP measurements are noisier at all levels. ATON ADCP has O(10X) larger vertical velocity
Quick Response Estuarine Buoy (QREB)
Support for hazmat response
Easily deployed from small vessel
Short duration deployment (90 days)
Survive moderate gale
Report current profile and met data at 6 minute intervals
As delivered…
600 pounds13 feet overall length4 ft diameter
Tested in the ChesapeakeBay at CC#16, comparedto bottom-mounted RDI and our ATON ADCP
Sutron Xpert 9210 DCP300 KHz RDI ADCPRM Young anemometerBarometric pressureAir temperatureGPS
6 minute data update rateIP modemGOES
QREB Display
• Ruggedize DCP housing• Calibrate compass (wind direction)• Nortek ADP (less power, near-surface velocity)• GPS• Smaller beacon (solar panels)• Battery capacity testing• Iridium (global coverage, less power)• Lightweight capability
Upgrades & Improvements
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