Dataset: GP17-OCE ODF nutrients
Deployment: RR2214

GP17-OCE ODF nutrients

View Data: For data, See Dataset Metadata Page: https://www.bco-dmo.org/dataset/933861

Principal Investigator:

Benjamin Twining (Bigelow Laboratory for Ocean Sciences)

Co-Principal Investigator:

Gregory A. Cutter (Old Dominion University, ODU)

Jessica N. Fitzsimmons (Texas A&M University, TAMU)

BCO-DMO Data Manager:

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

Project:

US GEOTRACES GP17 Section: South Pacific and Southern Ocean (GP17-OCE) (GP17-OCE)

Version:

Deployment Synonyms:

GP17, GP17-OCE, 33RR20221201

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Description

Methods & Sampling

Dataset acquisition description

For GP17-OCE, a Scripps Institution of Oceanography (SIO) STS 36-place yellow rosette and bottles were used. The rosette was loaded on Revelle in early November 2022. The rosette and bottles were built before P06 2017, making this the fifteenth time this package has been deployed. A steel bridle was added to the top of the rosette to adapt to the winch head. The bottles were made with new PVC, with new non-baked o-rings and electro-polished steel springs. Springs within the Bullister-style Niskin bottles were electropolished stainless steel. Bottle lanyards were made from 300-pound monofilament. In addition to the standard CTDO package on GO-SHIP cruises, a UVP, oxidation reduction potential (ORP), and turbidity sensor were mounted on the rosette. During the cruise, a handful of problems were encountered. These are described in the cruise report prepared by the Ocean Data Facility (ODF) (see Supplemental Files).

ODF rosette casts were performed with a package consisting of a 36-bottle rosette frame, a 36-place carousel, and 36 Bullister style Niskin bottles with an absolute volume of 10.6 liters (L). Underwater electronic components primarily consisted of a SeaBird Electronics housing unit with Paroscientific pressure sensor with dual plumbed lines where each line has a pump, temperature sensor, conductivity sensor, and exhaust line. A SeaBird Electronics membrane oxygen sensor was mounted on the "primary" line. A reference thermometer, RINKO oxygen optode, transmissometer, chlorophyll-a fluorometer, and altimeter were also mounted on the rosette. UVP, ORP, and turbidity instruments were deployed with the CTD/rosette package and their use is outlined further in the cruise report.

Data Processing Description

Dataset Processing Description

Calculation of nutrient concentrations: For nutrients and oxygen, seawater density was calculated using TEOS-10. ODF used the bottle salinity if available, if not they used the CTD trip value. The temperature used for the nutrient density conversions are the lab temperatures measured during analysis. For oxygen, the draw temperature was used for the density conversions. The pressure used was the surface pressure (0 dbar).

Quality Flags: Quality flags are assigned using the WOCE/WHP codes, described at http://cchdo.ucsd.edu/WHP_Exchange_Description.pdf and as follows:

WOCE Bottle Quality Codes
1: Bottle information unavailable.
2: No problems noted.
3: Leaking.
4: Did not trip correctly.
5: Not reported.
6: Significant discrepancy in measured values between Gerard and Niskin bottles.
7: Unknown problem.
8: Pair did not trip correctly. Note that the Niskin bottle can trip at an unplanned depth while the Gerard trips correctly and vice versa.
9: Samples not drawn from this bottle.

WOCE Water Sample Quality Codes
1: Sample for this measurement was drawn from water bottle but analysis not received.
2: Acceptable measurement.
3: Questionable measurement.
4: Bad measurement.
5: Not reported.
6: Mean of replicate measurements.
7: Manual chromatographic peak measurement.
8: Irregular digital chromatographic peak integration.
9: Sample not drawn for this measurement from this bottle.

More information about this dataset deployment

Funding

Award Number	Funding Source
OCE-2023206	NSF Division of Ocean Sciences
OCE-2023237	NSF Division of Ocean Sciences
OCE-2023315	NSF Division of Ocean Sciences

Instruments

Altimeter

Supplied Name: altimeter (Valeport 500)

Supplied Description:

Instrument Type

Generic Name: Altimeter

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/379/

Generic Description:

An instrument that measures height above a fixed surface. The data can be used to map ocean-surface topography and generate gridded surface height fields.

CTD Sea-Bird SBE 911plus

Supplied Name: SBE9+ and SBE-11+ (V1) deck unit

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

Fluorometer

Supplied Name: chlorophyll-a fluorometer (WetLabs ECO-FL-RTD)

Supplied Description:

Instrument Type

Generic Name: Fluorometer

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/113/

Generic Description:

A fluorometer or fluorimeter is a device used to measure parameters of fluorescence: its intensity and wavelength distribution of emission spectrum after excitation by a certain spectrum of light. The instrument is designed to measure the amount of stimulated electromagnetic radiation produced by pulses of electromagnetic radiation emitted into a water sample or in situ.

Niskin bottle

Supplied Name: Bullister-style Niskin bottles

Supplied Description:

ODF rosette casts were performed with a package consisting of a 36-bottle rosette frame, a 36-place carousel, and 36 Bullister style Niskin bottles with an absolute volume of 10.6 liters (L).

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.

Pressure Sensor

Supplied Name: Digiquartz

Supplied Description:

Instrument Type

Generic Name: Pressure Sensor

Generic Description:

A pressure sensor is a device used to measure absolute, differential, or gauge pressures. It is used only when detailed instrument documentation is not available.

Rinko III ARO-CAV Oxygen Sensor

Supplied Name: RINKO oxygen optode (JFE Advantech Rinko-III)

Supplied Description:

Instrument Type

Generic Name: Rinko III ARO-CAV Oxygen Sensor

Acronym: RINKO III

Generic Description:

The RINKO III is a fast-response optical dissolved oxygen (DO) and temperature sensor. The DO sensor is coated with photostimulable phosphor (PSP) on the outside of the pressure-resistant acrylic optical window, measuring phosphorescence quenching phase shift. The excitation blue LED pulse generates a red phosphorescence pulse, which in turn has an inverse correlation with the oxygen partial pressure in the water. It is an analogue output version. It has a response time of less than 1 second in air, enabling dissolved oxygen measurements with continuous profiling at high speeds. The dissolved oxygen sensor has a non-linear accuracy of +/-2% of full scale (at 1atm, 25 deg C) and the temperature sensor +/-0.02 deg C. It has a pressure rating of 7000 m. This device is made by JFE Advantech Co. Ltd.

Sea-Bird SBE 35 thermometer

Supplied Name: reference thermometer

Supplied Description:

Instrument Type

Generic Name: Sea-Bird SBE 35 thermometer

Acronym: SBE35

Generic Description:

An oceanographic thermometer with a measurement range of -5 to +35 deg C; an initial accuracy of 0.001 deg C; and a resolution of 0.000025 deg C. The sensor is an ultra-stable aged thermistor with a drift rate of less than 0.001deg C per year. It can be used both in fixed point cells and at depths up to 6800 metres in combination with an SBE water sampling carousel.

Sea-Bird SBE 3plus Temperature Sensor

Supplied Name: Primary temperature sensor (SBE3+)

Supplied Description:

Instrument Type

Generic Name: Sea-Bird SBE 3plus Temperature Sensor

Acronym: SBE 3P

Generic Description:

The Sea-Bird SBE 3plus water temperature sensor is designed for use on the SBE 9plus CTD system. The sensor operates over the range -5 to +35 °C, a resolution of 0.0003 °C at 24 Hz and an initial accuracy of ± 0.001 °C. The typical sampling rate is 24 Hz, and the sensor has a depth rating of 6800 meters (aluminium housing) or 10500 meters (titanium housing).

Sea-Bird SBE 43 Dissolved Oxygen Sensor

Supplied Name: SBE43

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

Sea-Bird SBE-4 Conductivity Sensor

Supplied Name: primary conductivity sensor (SBE4C)

Supplied Description:

Instrument Type

Generic Name: Sea-Bird SBE-4 Conductivity Sensor

Acronym: SBE-4 Conductivity

Community Identifier: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0417/

Generic Description:

The Sea-Bird SBE-4 conductivity sensor is a modular, self-contained instrument that measures conductivity from 0 to 7 Siemens/meter. The sensors (Version 2; S/N 2000 and higher) have electrically isolated power circuits and optically coupled outputs to eliminate any possibility of noise and corrosion caused by ground loops. The sensing element is a cylindrical, flow-through, borosilicate glass cell with three internal platinum electrodes. Because the outer electrodes are connected together, electric fields are confined inside the cell, making the measured resistance (and instrument calibration) independent of calibration bath size or proximity to protective cages or other objects.

Transmissometer

Supplied Name: Cstar transmissometer

Supplied Description:

Instrument Type

Generic Name: Transmissometer

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/124/

Generic Description:

A transmissometer measures the beam attenuation coefficient of the lightsource over the instrument's path-length. This instrument designation is used when specific manufacturer, make and model are not known.

Parameters

Supplied Name	Supplied description	Supplied Units	Standard Name
EXPOCODE	Cruise expocode	unitless	EXPOCODE
SECT_ID	Cruise name/ID	unitless	cruise_id
STNNBR	Station number	unitless	station
CASTNO	Cast number	unitless	cast
SAMPNO	Sample number	unitless	sample
BTLNBR	Bottle number	unitless	bottle
BTLNBR_FLAG_W	Bottle flag	unitless	q_flag
EVENT_NUMBER	Event number	unitless	event
GEOTRC_SAMPNO	GEOTRACES sample number	unitless	sample
ISO_DateTime_UTC	Date and time (UTC) of event in ISO 8601 format	unitless	ISO_DateTime_UTC
DATE	Date of event	unitless	date
TIME	Time (UTC) of event	unitless	time
LATITUDE	Latitude of event; negative values = South	decimal degrees	lat
LONGITUDE	Longitude of event; negative values = West	decimal degrees	lon
DEPTH	Sample depth	meters (m)	depth
REFTMP	Reference temperature	degrees Celsius	temp
REFTMP_FLAG_W	Quality flag for REFTMP	unitless	q_flag
BTL_ISO_DateTime_UTC	Date and time (UTC) when bottle was fired in ISO 8601 format	unitless	ISO_DateTime_UTC
BTL_DATE	Date when bottle was fired	unitless	date
BTL_TIME	Time (UTC) when bottle was fired	unitless	time
BTL_LAT	Latitude where bottle was fired; negative values = South	decimal degrees	lat
BTL_LON	Longitude where bottle was fired; negative values = West	decimal degrees	lon
CTDPRS	Pressure; measured by CTD	decibars (dbar)	press
CTDPRS_FLAG_W	Quality flag for CTDPRS	unitless	q_flag
CTDTMP	Temperature; measured by CTD	degrees Celsius; ITS-90	temp
CTDTMP_FLAG_W	Quality flag for CTDTMP	unitless	q_flag
CTDSAL	Salinity; measured by CTD	PSU; PSS-78	sal
CTDSAL_FLAG_W	Quality flag for CTDSAL	unitless	q_flag
CTDOXY	Oxygen; measured by CTD	micromoles per kilogram (umol/kg)	O2
CTDOXY_FLAG_W	Quality flag for CTDOXY	unitless	q_flag
CTDFLUOR	Fluorescence; measured by CTD	volts	fluor
CTDFLUOR_FLAG_W	Quality flag for CTDFLUOR	unitless	q_flag
CTDXMISS	Transmissometer reading from CTD	volts	trans_v
CTDXMISS_FLAG_W	Quality flag for CTDXMISS	unitless	q_flag
SILICATE_D_CONC_BOTTLE_ODF	Concentration of dissolved silicate (silicic acid), samples may or may not have been filtered; from bottle samples	micromoles per kilogram (umol/kg)	Silicate
SILICATE_D_CONC_BOTTLE_ODF_FLAG_W	Quality flag for SILICATE_D_CONC_BOTTLE_ODF	unitless	q_flag
NITRATE_D_CONC_BOTTLE_ODF	Concentration of dissolved nitrate, samples may or may not have been filtered; from bottle samples	micromoles per kilogram (umol/kg)	NO3
NITRATE_D_CONC_BOTTLE_ODF_FLAG_W	Quality flag for NITRATE_D_CONC_BOTTLE_ODF	unitless	q_flag
NITRITE_D_CONC_BOTTLE_ODF	Concentration of dissolved nitrite, samples may or may not have been filtered; from bottle samples	micromoles per kilogram (umol/kg)	NO2
NITRITE_D_CONC_BOTTLE_ODF_FLAG_W	Quality flag for NITRITE_D_CONC_BOTTLE_ODF	unitless	q_flag
PHOSPHATE_D_CONC_BOTTLE_ODF	Concentration of dissolved phosphate, samples may or may not have been filtered; from bottle samples	micromoles per kilogram (umol/kg)	PO43-
PHOSPHATE_D_CONC_BOTTLE_ODF_FLAG_W	Quality flag for PHOSPHATE_D_CONC_BOTTLE_ODF	unitless	q_flag
SILICATE_D_CONC_FISH_ODF	Concentration of dissolved silicate (silicic acid), samples may or may not have been filtered; from towed fish samples	micromoles per kilogram (umol/kg)	Silicate
SILICATE_D_CONC_FISH_ODF_FLAG_W	Quality flag for SILICATE_D_CONC_FISH_ODF	unitless	q_flag
NITRATE_D_CONC_FISH_ODF	Concentration of dissolved nitrate, samples may or may not have been filtered; from towed fish samples	micromoles per kilogram (umol/kg)	NO3
NITRATE_D_CONC_FISH_ODF_FLAG_W	Quality flag for NITRATE_D_CONC_FISH_ODF	unitless	q_flag
NITRITE_D_CONC_FISH_ODF	Concentration of dissolved nitrite, samples may or may not have been filtered; from towed fish samples	micromoles per kilogram (umol/kg)	NO2
NITRITE_D_CONC_FISH_ODF_FLAG_W	Quality flag for NITRITE_D_CONC_FISH_ODF	unitless	q_flag
PHOSPHATE_D_CONC_FISH_ODF	Concentration of dissolved phosphate, samples may or may not have been filtered; from towed fish samples	micromoles per kilogram (umol/kg)	PO43-
PHOSPHATE_D_CONC_FISH_ODF_FLAG_W	Quality flag for PHOSPHATE_D_CONC_FISH_ODF	unitless	q_flag
SILICATE_D_CONC_PUMP_ODF	Concentration of dissolved silicate (silicic acid), samples may or may not have been filtered; from pump samples	micromoles per kilogram (umol/kg)	Silicate
SILICATE_D_CONC_PUMP_ODF_FLAG_W	Quality flag for SILICATE_D_CONC_PUMP_ODF	unitless	q_flag
NITRATE_D_CONC_PUMP_ODF	Concentration of dissolved nitrate, samples may or may not have been filtered; from pump samples	micromoles per kilogram (umol/kg)	NO3
NITRATE_D_CONC_PUMP_ODF_FLAG_W	Quality flag for NITRATE_D_CONC_PUMP_ODF	unitless	q_flag
NITRITE_D_CONC_PUMP_ODF	Concentration of dissolved nitrite, samples may or may not have been filtered; from pump samples	micromoles per kilogram (umol/kg)	NO2
NITRITE_D_CONC_PUMP_ODF_FLAG_W	Quality flag for NITRITE_D_CONC_PUMP_ODF	unitless	q_flag
PHOSPHATE_D_CONC_PUMP_ODF	Concentration of dissolved phosphate, samples may or may not have been filtered; from pump samples	micromoles per kilogram (umol/kg)	PO43-
PHOSPHATE_D_CONC_PUMP_ODF_FLAG_W	Quality flag for PHOSPHATE_D_CONC_PUMP_ODF	unitless	q_flag
OXYGEN_D_CONC_BOTTLE_ODF	Concentration of dissolved oxygen from a bottle sample	micromoles per kilogram (umol/kg)	O2
OXYGEN_D_CONC_BOTTLE_ODF_FLAG_W	Quality flag for OXYGEN_D_CONC_BOTTLE_ODF	unitless	q_flag
OXYGEN_D_CONC_PUMP_ODF	Concentration of dissolved oxygen from a bottle attached to a pump	micromoles per kilogram (umol/kg)	O2
OXYGEN_D_CONC_PUMP_ODF_FLAG_W	Quality flag for OXYGEN_D_CONC_PUMP_ODF	unitless	q_flag
OXYGEN_D_CONC_UWAY_ODF	Concentration of dissolved oxygen from a ship's underway seawater sampling system	micromoles per kilogram (umol/kg)	O2
OXYGEN_D_CONC_UWAY_ODF_FLAG_W	Quality flag for OXYGEN_D_CONC_UWAY_ODF	unitless	q_flag
SALINITY_D_CONC_BOTTLE_ODF	Practical salinity from bottle sample on the PSS-1978 scale	PSU; PSS-78	sal
SALINITY_D_CONC_BOTTLE_ODF_FLAG_W	Quality flag for SALINITY_D_CONC_BOTTLE_ODF	unitless	q_flag
SALINITY_D_CONC_FISH_ODF	Practical salinity from a towed fish sample on the PSS-1978 scale	PSU; PSS-78	sal
SALINITY_D_CONC_FISH_ODF_FLAG_W	Quality flag for SALINITY_D_CONC_FISH_ODF	unitless	q_flag
SALINITY_D_CONC_PUMP_ODF	Practical salinity on the PSS-1978 scale; from pump samples	PSU; PSS-78	sal
SALINITY_D_CONC_PUMP_ODF_FLAG_W	Quality flag for SALINITY_D_CONC_PUMP_ODF	unitless	q_flag

Database

Contribute Data

Dataset: GP17-OCE ODF nutrients
Deployment: RR2214

Dataset acquisition description

Dataset Processing Description

Database

Contribute Data

Dataset: GP17-OCE ODF nutrientsDeployment: RR2214

Dataset acquisition description

Dataset Processing Description

Dataset: GP17-OCE ODF nutrients
Deployment: RR2214