Dataset: Bio-optical measurements
Deployment: SP2319

Bio-optical measurements

View Data: For data, See Dataset Metadata Page: https://www.bco-dmo.org/dataset/953193

Principal Investigator:

Nicholas Baetge (Oregon State University, OSU)

Scientist:

Jason Graff (Oregon State University, OSU)

Allen J. Milligan (Oregon State University, OSU)

Student:

Parker Hansen (Oregon State University, OSU)

Brian Ver Wey (Oregon State University, OSU)

BCO-DMO Data Manager:

Shannon Rauch (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Project:

Postdoctoral Fellowship: OCE-PRF: Smoke on the water: the impacts of wildfire ash deposition on surface ocean biology (Smoke on the water)

Version:

Deployment Synonyms:

Redfield ratio 2023 cruise

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Description

Methods & Sampling

Dataset acquisition description

Bio-optical measurements of surface seawater were made using the shipboard flow-through system within three hours of a CTD cast. Measurements of particulate attenuation (cp) and particulate absorption (ap) at three wavelengths (λ = 470, 532, and 660 nanometers (nm)) were made with an AC-S spectrophotometer (serial number 94; Sea-Bird Scientific [WET Labs, Inc.]). Coincident measurements of particulate backscattering (bbp) at three wavelengths (λ = 470, 532, and 660 nm) were made with an ECO-BB3 (serial number 349; Sea-Bird Scientific [WET Labs, Inc.]) set in a custom enclosure (Dall’Olmo et al., 2009).

Data Processing Description

Dataset Processing Description

Bio-optical data were processed using InLineAnalysis available from the Maine In-situ Sound & Color Lab (https://github.com/OceanOptics/InLineAnalysis; Boss et al, 2019).

More information about this dataset deployment

Funding

Award Number	Funding Source
OCE-2306993	NSF Division of Ocean Sciences

Instruments

WET Labs AC-S in-situ spectrophotometer

Supplied Name: AC-S spectrophotometer

Supplied Description:

Measurements of particulate attenuation (cp) and particulate absorption (ap) at three wavelengths (λ = 470, 532, and 660 nm) were made with an AC-S spectrophotometer (serial number 94; Sea-Bird Scientific [WET Labs, Inc.]).

Instrument Type

Generic Name: WET Labs AC-S in-situ spectrophotometer

Acronym: AC-S

Generic Description:

The WET Labs {Sea-Bird WETLabs} AC-S in-situ spectrophotometer is based on the AC-9 flow-through sensor offering increased spectral resolution of in-situ absorption and beam attenuation. The AC-S can have 80 (+/- 5) wavelength outputs with a range of 400-730 nm. The AC-S consists of a 10 or 25-centimeter (cm) pathlength, a 4-nanometer (nm) resolution, an accuracy of 0.001 - 10 m-1, an operational temperature range of 0 - 30 degrees Celsius, and an operational depth rating of 500 meters.

WET Labs ECO BB3SLO scattering sensor

Supplied Name: ECO-BB3

Supplied Description:

Coincident measurements of particulate backscattering (bbp) at three wavelengths (λ = 470, 532, and 660 nm) were made with an ECO-BB3 (serial number 349; Sea-Bird Scientific [WET Labs, Inc.]) set in a custom enclosure (Dall’Olmo et al., 2009).

Instrument Type

Generic Name: WET Labs ECO BB3SLO scattering sensor

Acronym: ECO-BB3

Generic Description:

The WET Labs {Sea-Bird WETLabs} ECO Puck Triplet BB3SLO scattering sensor is a variant of the ECO Puck Triplet. The BB3 is a three-optical-sensor, user-defined instrument that carries 3 scattering meters. ECO Pucks are real‐time only sensors as they are integrated onto the OEM platform that provides power and data handling. The SLO designation signifies this is a 1st generation model that is specific for integration into Slocum gliders. The fluorometers and scattering meter are single wavelength sensors. The model is depth-rated to 600 meters.

Parameters

Supplied Name	Supplied description	Supplied Units	Standard Name
stn	station number	unitless	station
lat	latitude	degrees North	lat
lon	longitude	degrees East	lon
dt	datetime (UTC) in ISO 8601 format	unitless	ISO_DateTime_UTC
bbp_470	particulate backscattering at 470 nm	reciprocal meters (1/m)	bbp470
bbp_532	particulate backscattering at 532 nm	reciprocal meters (1/m)	bbp532
bbp_660	particulate backscattering at 660 nm	reciprocal meters (1/m)	bbp660
ap_470	particulate absorption at 470 nm	reciprocal meters (1/m)	ap470
ap_532	particulate absorption at 532 nm	reciprocal meters (1/m)	ap532
ap_660	particulate absorption at 660 nm	reciprocal meters (1/m)	ap660
cp_470	particulate attenuation at 470 nm	reciprocal meters (1/m)	no_bcodmo_term
cp_532	particulate attenuation at 532 nm	reciprocal meters (1/m)	no_bcodmo_term
cp_660	particulate attenuation at 660 nm	reciprocal meters (1/m)	no_bcodmo_term
poc_cp_660	Particulate organic carbon concentration estimated from particulate attenuation at 660 nm	milligrams per cubic meter (mg/m3)	no_bcodmo_term
chl_ap676lh	Chlorophyll concentration estimated from the line height of particulate absorption at 676 nm	milligrams per cubic meter (mg/m3)	no_bcodmo_term
gamma_cp	The mean particle size index	unitless	no_bcodmo_term

Database

Contribute Data

Dataset: Bio-optical measurements
Deployment: SP2319

Dataset acquisition description

Dataset Processing Description

Database

Contribute Data

Dataset: Bio-optical measurementsDeployment: SP2319

Dataset acquisition description

Dataset Processing Description

Dataset: Bio-optical measurements
Deployment: SP2319