Dataset: chl_a_3m
Deployment: SE0005

chlorophyll-a from salmon trawl cruises

Co-Principal Investigator:

Richard D Brodeur (National Oceanic and Atmospheric Administration, NOAA)

Suzan S Pool (Oregon State University, OSU-CIMRS)

BCO-DMO Data Manager:

Ms Dicky Allison (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Project:

U.S. GLOBEC Northeast Pacific (NEP)

Current State:

Final no updates expected

Data URL:

https://osprey.bco-dmo.org/dataset-deployment/450145/data

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Description

U.S. GLOBEC Northeast Pacific, California Current System
Mesoscale Process Studies Chlorophyll a Data

During juvenile salmonid trawling cruises, additional sampling included CTD profiles, neuston net tows, and chlorophyll a water samples. At most stations, data on all parameters were collected.

Contacts for this data set are:
Dr. Richard Brodeur
Northwest Fisheries Science Center
National Oceanographic and Atmospheric Administration
Newport, OR 97365
Phone: 541-867-0336
Email: rick.brodeur@noaa.gov

Suzan Pool
Cooperative Institute of Marine Resources
Oregon State University
Newport, OR 97365
Phone: 541-867-0195
Email: suzan.pool@noaa.gov

Methods & Sampling

Dataset acquisition description

Replicate samples for in-vitro chlorophyll a were collected from 3-m depth with a 1-l Niskin water sampler. Sampling done at all stations at which salmon trawling was done; additional sampling at most stations was a CTD, plankton sampling.

Deployment-specific acquisition description

Replicate samples for in-vitro chlorophyll a were collected from 3-m depth with a 1-l Niskin water sampler.

Data Processing Description

Dataset Processing Description

Samples were immediately filtered through GF/F glass fiber filters, then frozen for further analysis in the laboratory. One of two replicates was processed whereas the other was a back up sample. Chlorophyll a was processed using the cold-acetone extraction method and measured with a Turner Designs 10-AU fluorometer (Arar and Collins, 1997).

Deployment-specific processing description

<p>Samples were immediately filtered through GF/F glass fiber filters, then frozen for further analysis in the laboratory. One of two replicates was processed whereas the other was a back up sample. Chlorophyll a was processed using the cold-acetone extraction method and measured with a Turner Designs 10-AU fluorometer (Arar and Collins, 1997).</p>

More information about this dataset deployment

Funding

Award Number	Funding Source
OCE-0000733	NSF Division of Ocean Sciences
unknown NEP NOAA	National Oceanic and Atmospheric Administration

Instruments

Niskin bottle

Supplied Name: Niskin Bottle

Supplied Description:

Niskin bottle sample at 3-m depth. Replicate samples for in-vitro chlorophyll a were collected from 3-m depth with a 1-l Niskin water sampler.

Instrument Type

Generic Name: Niskin bottle

Community Identifier: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0412/

Generic Description:

A Niskin bottle (a next generation water sampler based on the Nansen bottle) is a cylindrical, non-metallic water collection device with stoppers at both ends. The bottles can be attached individually on a hydrowire or deployed in 12, 24, or 36 bottle Rosette systems mounted on a frame and combined with a CTD. Niskin bottles are used to collect discrete water samples for a range of measurements including pigments, nutrients, plankton, etc.

Parameters

Supplied Name	Supplied description	Supplied Units	Standard Name
yr	year	dimensionless	year
cruise_id	cruise ID	dimensionless	cruiseid
cast	cast number within cruise	dimensionless	cast
sta_std	standard station name	dimensionless	station_std
lat	latitude (decimal degrees)	decimal degrees	lat
lon	longitude (decimal degrees)	decimal degrees	lon
depth_w	bottom depth of station (meters)	meters	depth_w
month_local	local month	dimensionless	month_local
day_local	local day	dimensionless	day_local
time_local	local time (24-hr)	dimensionless	time_local
inst	sampling instrument	dimensionless	instrument
depth	sample depth (meters)	meters	depth
chl_a	chlorophyll a concentration (ug/L)	ug/L	chl_a
phaeo	phaeophytin a concentration (ug/L)	ug/L	phaeo
comments	comments about particular sample	dimensionless	comment
timezone	Time zone, relative to GMT time.	hours	time_zone
ship	Name of the vessel.	dimensionless	ship

Database

Contribute Data

Dataset: chl_a_3m
Deployment: SE0005

Dataset acquisition description

Deployment-specific acquisition description

Dataset Processing Description

Deployment-specific processing description

Database

Contribute Data

Dataset: chl_a_3mDeployment: SE0005

Dataset acquisition description

Deployment-specific acquisition description

Dataset Processing Description

Deployment-specific processing description

Dataset: chl_a_3m
Deployment: SE0005