Dataset: Hood Canal - nutrients
Deployment: CB974

Nutrient concentrations from Hood Canal, Puget Sound, Washington, USA

View Data: For data, See Dataset Metadata Page: https://www.bco-dmo.org/dataset/540882

Principal Investigator:

James W. Moffett (University of Southern California, USC)

BCO-DMO Data Manager:

Nancy Copley (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Project:

Significance of nitrification in shaping planktonic biodiversity in the ocean (Nitrification and Marine Planktonic Biodiversity)

Current State:

Preliminary and in progress

Version:

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Description

Nitrate, nitrite, ammoniumn, phosphate, silicate, oxygen concentrations from various depths in the Hood Canal, 2011-2012.

Methods & Sampling

Dataset acquisition description

Samples for nutrient measurements (nitrate (NO3^-), nitrite (NO2^-), ammonium (NH4⁺), phosphate (PO4^{3 -}) and silicate (SiO4^{4 -})) and ammonia oxidation rates were collected using a conductivity, temperature, depth (CTD) rosette (Sea-Bird Electronics) equipped with 12 10 L Niskin bottles. Dissolved oxygen (O2) concentrations were measured with a CTD sensor package (SBE-43; Sea-Bird Electronics) on the Hoodsport ORCA buoy mooring and were calibrated against Winkler O2 determinations for all but the CB974 cruise. Ammonium and nitrite concentrations were measured within 2 h of sample collection onboard using the o-phthaldialdehyde (OPA) fluorescence method and spectrophotometrically, respectively. See Jacquot et al. (2014) for further details.

Data Processing Description

Dataset Processing Description

Samples for NO3, PO4, and SiO4 were filtered with a 0.22 um size pore filter and frozen at -20 °C for shore-based analysis at the University of Washington. Those analyses were performed at the Marine Chemistry Laboratory of the School of Oceanography using a Technicon AutoAnalyzer II (UNESCO, 1994).

More information about this dataset deployment

Funding

Award Number	Funding Source
OCE-1046098	NSF Division of Ocean Sciences

Instruments

CTD Sea-Bird SBE 911plus

Supplied Name: CTD SBE 911plus

Supplied Description:

Instrument Type

Generic Name: CTD Sea-Bird SBE 911plus

Acronym: CTD SBE 911plus

Community Identifier: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0058/

Generic Description:

The Sea-Bird SBE 911 plus is a type of CTD instrument package for continuous measurement of conductivity, temperature and pressure. The SBE 911 plus includes the SBE 9plus Underwater Unit and the SBE 11plus Deck Unit (for real-time readout using conductive wire) for deployment from a vessel. The combination of the SBE 9 plus and SBE 11 plus is called a SBE 911 plus. The SBE 9 plus uses Sea-Bird's standard modular temperature and conductivity sensors (SBE 3 plus and SBE 4). The SBE 9 plus CTD can be configured with up to eight auxiliary sensors to measure other parameters including dissolved oxygen, pH, turbidity, fluorescence, light (PAR), light transmission, etc.). more information from Sea-Bird Electronics

GO-FLO Bottle

Supplied Name: GO-FLO

Supplied Description:

10 L Teflon-coated Go-Flo bottles (General Oceanics) attached to Kevlar wire

Instrument Type

Generic Name: GO-FLO Bottle

Acronym: GO-FLO

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/30/

Generic Description:

GO-FLO bottle cast used to collect water samples for pigment, nutrient, plankton, etc. The GO-FLO sampling bottle is specially designed to avoid sample contamination at the surface, internal spring contamination, loss of sample on deck (internal seals), and exchange of water from different depths.

Nutrient Autoanalyzer

Supplied Description:

Instrument Type

Generic Name: Nutrient Autoanalyzer

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/LAB04/

Generic Description:

Nutrient Autoanalyzer is a generic term used when specific type, make and model were not specified. In general, a Nutrient Autoanalyzer is an automated flow-thru system for doing nutrient analysis (nitrate, ammonium, orthophosphate, and silicate) on seawater samples.

Sea-Bird SBE 43 Dissolved Oxygen Sensor

Supplied Name: SBE-43 DO

Supplied Description:

Instrument Type

Generic Name: Sea-Bird SBE 43 Dissolved Oxygen Sensor

Acronym: SBE-43 DO

Community Identifier: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0036/

Generic Description:

The Sea-Bird SBE 43 dissolved oxygen sensor is a redesign of the Clark polarographic membrane type of dissolved oxygen sensors. more information from Sea-Bird Electronics

Spectrophotometer

Supplied Name: spectrophotometer

Supplied Description:

Instrument Type

Generic Name: Spectrophotometer

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/LAB20/

Generic Description:

An instrument used to measure the relative absorption of electromagnetic radiation of different wavelengths in the near infra-red, visible and ultraviolet wavebands by samples.

Parameters

Supplied Name	Supplied description	Supplied Units	Standard Name
cruise_id	cruise identification	unitless	cruise_id
year	year	yyyy	year
month	month	1-12	month
depth	sample depth	meters	depth
NO2	nitrite concentration	uM	NO2
DIN	dissolved inorganic nitrogen concentration	uM	DIN
NH4	ammonium concentration	uM	NH4
NH4_lab	ammonium concentration from later lab analysis	uM	NH4
NO3	nitrate concentration	uM	NO3
PO4	phosphate concentration	uM	PO4
SiO4	silicate concentration	uM	SiO4
O2	dissolved oxygen concentration	uM	O2
DIN_PO4	ratio of dissolved inorganic nitrogen to phosphate	unitless	no_bcodmo_term
AmOx_rate	rate of ammonia oxidation	nM/day	no_bcodmo_term

Database

Contribute Data

Dataset: Hood Canal - nutrients
Deployment: CB974

Dataset acquisition description

Dataset Processing Description

Database

Contribute Data

Dataset: Hood Canal - nutrientsDeployment: CB974

Dataset acquisition description

Dataset Processing Description

Dataset: Hood Canal - nutrients
Deployment: CB974