Dataset: EN614 Nutrients
Deployment: EN614

EN614 Nutrients

Principal Investigator:

Joseph Montoya (Georgia Institute of Technology, GA Tech)

Co-Principal Investigator:

Ajit Subramaniam (Lamont-Doherty Earth Observatory, LDEO)

BCO-DMO Data Manager:

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

Project:

Collaborative Research: Impact of the Amazon River Plume on Nitrogen Availability and Planktonic Food Web Dynamics in the Western Tropical North Atlantic (Amazon River Plume Nitrogen)

Deployment Synonyms:

May18atl

Data URL:

https://www.bco-dmo.org/dataset-deployment/861212/data

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Description

Methods & Sampling

Dataset acquisition description

Hydrographic data and water samples were collected during casts with a CTD-rosette system (SBE11plus equipped with a fluorometer, transmissometer, oxygen sensor, and a PAR sensor).

Water samples for dissolved, inorganic nutrient analysis were collected in duplicate directly from Niskin bottles attached to the CTD-rosette system (listed above). Sampling tubes were rinsed with sample water three times before collection. After collection, one set of samples was placed in a fridge to be analyzed within 48hrs aboard the vessel while the duplicate set of samples was placed immediately in a freezer for later analysis. Analysis was completed on a Lachat Quickchem 8500 Series 2 nutrient analyzer, according to standard methods listed below:

PO4: 31-115-01-I

Si: 31-114-27-1-B

NO3/NO2: 31-107-04-1-A

NO2: 31-107-05-1-A

Method details available at: https://support.hach.com/app/answers/answer_view/a_id/1004798

Data Processing Description

Dataset Processing Description

Data Processing:
Hydrographic data were processed using SeaSave v 7.26.7.107. Please see the "EN614_Nutrients_Processing_Notes.pdf" Supplemental File for data processing details. Nutrient data were processed using Omnion 3.0 Software.

BCO-DMO Processing:
- renamed fields to comply with BCO-DMO naming conventions;
- converted date to YYYY-MM-DD format;
- added date-time field in ISO8601 format;
- replaced "31.2" with "31.20" in the "StnEvent" column.

More information about this dataset deployment

Funding

Award Number	Funding Source
OCE-1737078	NSF Division of Ocean Sciences

Instruments

CTD Sea-Bird SBE 911plus

Supplied Name:

Supplied Description:

Hydrographic data and water samples were collected during casts with a CTD-rosette system (SBE11plus equipped with a fluorometer, transmissometer, oxygen sensor, and a PAR sensor). Individual sensor details and calibration info provided in the "EN614_Nutrients_Processing_Notes.pdf" Supplemental File.

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

LI-COR Biospherical PAR Sensor

Supplied Name: Biospherical/Licor

Supplied Description:

Instrument Type

Generic Name: LI-COR Biospherical PAR Sensor

Acronym: LI-COR Biospherical PAR

Community Identifier: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0074/

Generic Description:

The LI-COR Biospherical PAR Sensor is used to measure Photosynthetically Available Radiation (PAR) in the water column. This instrument designation is used when specific make and model are not known.

Niskin bottle

Supplied Name: Niskin bottles attached to CTD-rosette system

Supplied Description:

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.

Nutrient Autoanalyzer

Supplied Name: Lachat Quikchem 8500 Series 2

Supplied Description:

Lachat Quikchem 8500 Series 2, with ASX-260 autosampler, manufactured by Lachat Instruments a Hach company brand

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

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

Wet Labs CSTAR Transmissometer

Supplied Name: WET Labs C-Star

Supplied Description:

Instrument Type

Generic Name: Wet Labs CSTAR Transmissometer

Acronym: WL CSTAR Trans

Community Identifier: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0160/

Generic Description:

A highly integrated opto-electronic design to provide a low cost, compact solution for underwater measurements of beam transmittance. The instrument is capable of either free space measurements, or through the use of an optical flow tube, flow-through sampling with a pump. It can be used in profiling, moored, or underway applications. more information from Wet Labs

Wet Labs ECO-AFL/FL Fluorometer

Supplied Name: WET Labs ECO-AFL/FL

Supplied Description:

Instrument Type

Generic Name: Wet Labs ECO-AFL/FL Fluorometer

Acronym: ECO AFL/FL

Community Identifier: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0172/

Generic Description:

The Environmental Characterization Optics (ECO) series of single channel fluorometers delivers both high resolution and wide ranges across the entire line of parameters using 14 bit digital processing. The ECO series excels in biological monitoring and dye trace studies. The potted optics block results in long term stability of the instrument and the optional anti-biofouling technology delivers truly long term field measurements.
more information from Wet Labs

Parameters

Supplied Name	Supplied description	Supplied Units	Standard Name
FileName	Original name of data file	unitless	file_name
Cruise	Cruise identifier	unitless	cruise_id
Station	Station number	unitless	station
StnEvent	Numeric identifier for each deployment in the format SSS.EE, where SSS is the station number and EE identifies the specific sampling event	unitless	event
BottleID	Bottle identifier (station, event, bottle)	unitless	bottle
Bottle	Bottle number	unitless	bottle
ISO_DateTime_UTC	Date and time (UTC) in ISO8601 format: YYYY-MM-DDThh:mm:ssZ	unitless	ISO_DateTime_UTC
Date	Date (UTC) in format YYYY-MM-DD	unitless	date
Time	Time (UTC) in format hh:mm:ss	unitless	time
Sal00	Salinity, Practical	PSU	sal
Sal11	Salinity, Practical, 2	PSU	sal
Sigma_t00	Density [sigma-theta]	kilograms per cubic meter (kg/m^3)	sigma_0
Sigma_t11	Density, 2 [sigma-theta]	kilograms per cubic meter (kg/m^3)	sigma_0
Oxsat	O2 saturation	Mm/Kg	O2sat
Sbeox0	Oxygen, SBE 43, WS = 2	micromoles per liter (umol/L)	O2
Sbeox1	Oxygen, SBE 43, 2, WS = 2	micromoles per liter (umol/L)	O2
Potemp090	Potential Temperature [ITS-90]	degrees Celsius	potemp
Potemp190	Potential Temperature, 2 [ITS-90]	degrees Celsius	potemp
SvCM	Sound Velocity [Chen-Millero]	meters per second (m/s)	sound_vel
SvCM1	Sound Velocity, 2 [Chen-Millero]	meters per second (m/s)	sound_vel
Scan	Scan count	unitless	scan
Scan_SD	Standard deviation of Scan	unitless	scan
TimeJ	Julian day (UTC)	unitless	julian_day
TimeJ_SD	Standard deviation of TimeJ	unitless	julian_day
TimeS	Time elapsed	seconds	time_elapsed
TimeS_SD	Standard deviation of TimeS	seconds	time_elapsed
PrDM	Pressure, Digiquartz	decibars (db)	press
PrDM_SD	Standard deviation of PrDM	decibars (db)	press
DepSM	Depth [salt water, m]	meters (m)	depth
DepSM_SD	Standard deviation of DepSM	meters (m)	depth
T090C	Temperature [ITS-90]	degrees Celsius	temp
T090C_SD	Standard deviation of T090C	degrees Celsius	temp
T190C	Temperature, 2 [ITS-90]	degrees Celsius	temp
T190C_SD	Standard deviation of T190C	degrees Celsius	temp
T2_T190C	Temperature Difference, 2 - 1 [ITS-90]	degrees Celsius	temp
T2_T190C_SD	Standard deviation of T2_T190C	degrees Celsius	temp
C0S	Conductivity	Siemens per meter (S/m)	cond
C0S_SD	Standard deviation of C0S	Siemens per meter (S/m)	cond
C1S	Conductivity, 2	Siemens per meter (S/m)	cond
C1S_SD	Standard deviation of C1S	Siemens per meter (S/m)	cond
C2_C1	Conductivity Difference, 2 - 1	Siemens per meter (S/m)	cond
C2_C1_SD	Standard deviation of C2_C1	Siemens per meter (S/m)	cond
V0	Voltage 0	volts (V)	no_bcodmo_term
V0_SD	Standard deviation of V0	volts (V)	no_bcodmo_term
CStarAt0	Beam Attenuation, WET Labs C-Star	reciprocal meters (1/m)	beam_cp
CStarAt0_SD	Standard deviation of CStarAt0	reciprocal meters (1/m)	beam_cp
CStarTr0	Beam Transmission, WET Labs C-Star	percent (%)	trans
CStarTr0_SD	Standard deviation of CStarTr0	percent (%)	trans
V1	Voltage 1	volts (V)	no_bcodmo_term
V1_SD	Standard deviation of V1	volts (V)	no_bcodmo_term
FlECO_AFL	Fluorescence, WET Labs ECO-AFL/FL	milligrams per cubic meter (mg/m^3)	fluor
FlECO_AFL_SD	Standard deviation of FlECO_AFL	milligrams per cubic meter (mg/m^3)	fluor
V2	Voltage 2	volts (V)	no_bcodmo_term
V2_SD	Standard deviation of V2	volts (V)	no_bcodmo_term
AltM	Altimeter	meters (m)	altitude
AltM_SD	Standard deviation of AltM	meters (m)	altitude
V3	Voltage 3	volts (V)	no_bcodmo_term
V3_SD	Standard deviation of V3	volts (V)	no_bcodmo_term
Par	PAR/Irradiance, Biospherical/Licor	micromoles photons per square meter per second (umol photons/m^2/sec)	PAR
Par_SD	Standard deviation of Par	micromoles photons per square meter per second (umol photons/m^2/sec)	PAR
V4	Voltage 4	volts (V)	no_bcodmo_term
V4_SD	Standard deviation of V4	volts (V)	no_bcodmo_term
Sbeox0V	Oxygen raw, SBE 43	volts (V)	O2_v
Sbeox0V_SD	Standard deviation of Sbeox0V	volts (V)	O2_v
V5	Voltage 5	volts (V)	no_bcodmo_term
V5_SD	Standard deviation of V5	volts (V)	no_bcodmo_term
Sbeox1V	Oxygen raw, SBE 43, 2	volts (V)	O2_v
Sbeox1V_SD	Standard deviation of Sbeox1V	volts (V)	O2_v
V6	Voltage 6	volts (V)	no_bcodmo_term
V6_SD	Standard deviation of V6	volts (V)	no_bcodmo_term
V7	Voltage 7	volts (V)	no_bcodmo_term
V7_SD	Standard deviation of V7	volts (V)	no_bcodmo_term
Spar	SPAR Biospherical/Licor	micromoles photons per square meter per second (umol photons/m^2/sec)	SPAR
Spar_SD	Standard deviation of Spar	micromoles photons per square meter per second (umol photons/m^2/sec)	SPAR
Latitude	Latitude	degrees North	lat
Latitude_SD	Standard deviation of Latitude	degrees North	lat
Longitude	Longitude	degrees East	lon
Longitude_SD	Standard deviation of Longitude	degrees East	lon
Mean_PO4	dissolved, inorganic phosphate	micromolar (uM)	PO43-
Mean_Si	dissolved, inorganic silicate	micromolar (uM)	Silicate
Mean_NO3_NO2	dissolved, inorganic nitrate+nitrite	micromolar (uM)	NO3_NO2
Mean_NO2	dissolved, inorganic nitrite	micromolar (uM)	NO2
Mean_N_star	deviation of NO3/NO2 relative to PO4 from the Redfield Ratio	unitless	ratio

Database

Contribute Data

Dataset: EN614 Nutrients
Deployment: EN614

Dataset acquisition description

Dataset Processing Description

Database

Contribute Data

Dataset: EN614 NutrientsDeployment: EN614

Dataset acquisition description

Dataset Processing Description

Dataset: EN614 Nutrients
Deployment: EN614