Dataset: Bio-optical spar
Deployment: OC404-01

Bio-optical spar data

Principal Investigator:

David Siegel (University of California-Santa Barbara, UCSB-ICESS)

BCO-DMO Data Manager:

Cynthia L. Chandler (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Project:

Eddies Dynamics, Mixing, Export, and Species composition (EDDIES)

Version:

May 2006

Deployment Synonyms:

EDDIES 2004 Survey 1, OC404-1, OC404_S1

Coordinated Deployments:

WB0409

Version Date:

2006-05-15

Data URL:

https://www.bco-dmo.org/dataset-deployment/452353/data

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Description

Bio-optical spar buoy data collected from the UCSB SPAR buoy configured with ECO-FLNTU Chlorophyll a and Optical Backscatter sensors. Data from both sensor types (chl a and optical backscatter) were compared with data from other sensors measuring similar data and the offsets were determined to be unacceptably large, combined with too short a sampling interval. Therefore, the data will not be published.

A schematic of the UCSB SPAR buoy configuration (as deployed during OC404-1 cruise) is available as a PDF file.

Methods & Sampling

Dataset acquisition description

Please refer to descriptions for each cruise (deployment).

Calibration of instruments:
SBE-39s and SBE-37 were calibrated by SeaBird.

ECO-FLNTU Chl a and Optical Backscatter sensors were compared to the Oceanus CTD fluorometer during
comparison casts for each cruise.

Deployment-specific acquisition description

Details of the UCSB Spar buoy deployed during EDDIES 2004 Survey 1.
    Due to the cancellation of the EDDIES Tracer 1 cruise, 
    the mooring was recovered at the end of Survey 1.

Calibration of instruments:
    SBE-39s and SBE-37 were calibrated by SeaBird.

    ECO-FLNTU Chl a and Optical Backscatter sensors were compared to the Oceanus 
CTD fluorometer during a comparison cast (oc404-4 053) during EDDIES 2004 
Survey 2.  Using the factory Chl a slope values, yielded Chl a values that 
were about twice that of the CTD fluorometer.  The comparison of the  
extracted Chl a and Phae a samples to the CTD fluorometer also showed the 
CTD fluorometer to be reading too low.  Therefore, the ECO-FLNTU readings
of all 3 profiles were matched with corrected CTD fluorometer values rather 
than factory calibrated CTD fluorometer values for oc404-4 053. There was 
significant differences in the Chl offset count for all 3 ECO-FLNTU sensors.  
The ECO-FL sensor failed to log during the comparison cast, so no adjustment 
to the factory calibration factors could be determined for this sensor.

    The Optical Backscatter channel of the ECO-FLNTU was too insensitive for 
optimal use in these clean waters.  

Therefore these data are not reported in the final report.



Drogue Mooring details:								
		Date		GMT	Latitude	Longitude
Launch:		25-Jun-04	1526	30 30.17 N	64 54.96 W			
Recovery:	30-Jun-04	1338	30 57.00 N	65 25.99 W			


	Buoy Instruments 							
Depth			Sampling interval  Data Recovery   s/n	
Surface	ARGOS/GPS positions  	every hour	100%		
10	temp, pressure		1min		100%	SBE39-376

40	temp			1min		100%	SBE39-497

70	temp			1min		100%	SBE39-499

80	temp			1min		100%	SBE39-500
80	Chl fl, turbidity	4min		100%	ECO-FLNTU 085

90	temp			1min		100%	SBE39-501
90	Chl fl, turbidity	4min		100%	ECO-FLNTU 086

100	temp, cond, pressure	1min		100%	SBE37SM-406
100	Chl fl, turbidity	4min		100%	ECO-FLNTU 087

110	temp			1min		100%	SBE39-502
110	Chl fl			4min		100%	ECO-FL 055

120-138	Holey Sock Drogue	none

Data Processing Description

Dataset Processing Description

More information about this dataset deployment

Instruments

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Parameters

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Database

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Dataset: Bio-optical spar
Deployment: OC404-01

Dataset acquisition description

Deployment-specific acquisition description

Dataset Processing Description

Database

Contribute Data

Dataset: Bio-optical sparDeployment: OC404-01

Dataset acquisition description

Deployment-specific acquisition description

Dataset Processing Description

Dataset: Bio-optical spar
Deployment: OC404-01