oceanic remote chemical/optical analyzer (orca)
DESCRIPTION
PRISM John Dunne; Wendi Ruef. ORCA overall; Steven Emerson; Allan Devol. Jan Newton; Rick Reynolds. General Support. T,S, O2 NO3, l. Oceanic Remote Chemical/optical Analyzer (ORCA) An autonomous profiler monitoring water quality in south Puget Sound. Nutrient Analyzer. ORCA GOALS. - PowerPoint PPT PresentationTRANSCRIPT
Oceanic Remote Chemical/optical Analyzer (ORCA)
An autonomous profiler monitoring water quality in south Puget Sound
T,S, O2
NO3,
ORCA overall;Steven Emerson; Allan Devol
Jan Newton; Rick Reynolds
PRISM John Dunne; Wendi Ruef
General Support
Nutrient Analyzer
• Develop a robust remote chemical and biological monitoring system
• T, S, Light, Meteorology
• NO3, O2, Chl-a, turbidity
• NH4, Gas Exchange parameters
• Telemeter data back to UW
• Monitor the spectrum of time-scales
• Hourly (tides), Daily (solar), Weekly (plankton growth), Monthly (blooms), Annual (seasons, and inter-annual, e.g., El Nino)
• Describe natural variability and characterize and help evaluate potential human influence
• Validate PRISM physical and biological models
• Ground-truth satellite ocean color
ORCA GOALS
WHAT DOES ORCA LOOK LIKE?
light
solar panel
radarreflector
superstructure
Platform and housing For Winch, electronics, etc
Atlas float(cut awayview)
ballast ring
anchoring(break inscale)
pack
age
weather station
ORCA Schematic View
4.2 m
solar panel
WHERE IS ORCA?
Photosynthesis (P) : [O2]CO2 + H2O + nutrients CH2O + O2
Respiration and Decay (R) : [O2]CH2O + O2 CO2 + H2O + nutrients
Excess nutrients and stratification (eutrophication) can lead to consumption of all the oxygen in a system, so fish can no longer survive there
NutrientsSt
ratif
icat
ion
http://www.ocean.washington.edu/research/orca/
July 12 - 28, 2000
enhancement
October 15-21, 2000Sept. 20- Oct. 2, 2000
no enhancement surface enhancement
Sigma-t
Chl ug/l
O2 mg/l
enhancement no enhancement surface enhancement
0
5
10
15
0 500 10000
5
10
15
20
25
0 500 10000
5
10
15
0 200 400 600
12 Oct 0025 Sep 0010 Jul 00
dept
h (m
)
primary productivity (mg C m-3 d-1)
Effect of nutrient addition on phytoplankton productivityblue = ambient productionred = spiked with NH4 and PO4
Carr Inlet, WA Ecology
Goals for 2003
• Science Goals:
• MIXED experiment (April 2003)
• Nutrients; NO3 and NH4
• Move Orca for Brightwater
• Publish Orca Results
• Prism Goals:
• Use Orca to Validate ABC-POM
• Carr Inlet
• Brighwater site
• Outreach
• Maintain Orca Website
• Orca School
Longer Term Goals
• Science
• Study Bloom Dynamics/gas exchange/nutirent/physics coupling
• Mixed layer
• Aphotic zone
• Add Sensors (PO4, Eddy Correlation, micro-gradient)
• Publish Orca Results
• Expand Network:
• South Sound, Main Basin, Hood Canal, Admiralty Inlet
• Continue and Expand Outreach/Education