OOI CTD and Discrete Water Sampling Data from R/V Atlantis, RVIB Nathaniel B. Palmer AT26-30, AT39-03, NBP1510, NBP1609 in the Argentine Basin from 2015-2018 (OOI Water Sample Data project)

Website: https://www.bco-dmo.org/dataset/914105
Data Type: Cruise Results
Version: 1
Version Date: 2023-10-26

Project
» OOI Discrete CTD and Water Sampling Cruise Data (OOI Cruise Data)

Program
» Ocean Observatories Initiative (OOI)
ContributorsAffiliationRole
Bigorre, SébastienWoods Hole Oceanographic Institution (WHOI)Chief Scientist
Curry, RuthWoods Hole Oceanographic Institution (WHOI)Chief Scientist
Send, UweWoods Hole Oceanographic Institution (WHOI)Chief Scientist
Plueddemann, AlbertWoods Hole Oceanographic Institution (WHOI)Principal Investigator
Reed, AndrewWoods Hole Oceanographic Institution (WHOI)Data Manager
Newman, SawyerWoods Hole Oceanographic Institution (WHOI BCO-DMO)BCO-DMO Data Manager

Abstract
The hydrographic sampling performed by OOI-CGSN (the Ocean Observatories Initiative - Coastal and Global Scale Nodes) part of each Array turn represents a significant collection of valuable physical, chemical, and biological information. In addition to the CTD, collected hydrographic data include discrete oxygen, salinity, nutrient (nitrate, nitrite, silicate, phosphate, ammonium), chlorophyll, and carbon system measurements. These data serve several important functions. First, they are necessary for the calibration and evaluation of the moored instrumentation at each Array. Furthermore, the annual (Global) or biannual (Coastal) collection of data at the same locations provides a unique time series of a large set of water properties following established community standards and methods, independent of its association with the OOI moorings. The analyses of collected water samples for the parameters listed above are performed by a number of outside labs on behalf of OOI-CGSN. Consequently, the water sampling data for a given cruise is distributed among a number of different files. The Discrete Sampling Summary integrates the related CTD, metadata, and discrete water sample data into a single file. Additionally, it synthesizes qualitative and quantitative information about the quality of a measurement into data quality flags for each associated parameter which follow WOCE-standards. The final product is the Discrete Sampling Summary spreadsheet which contains the metadata, CTD data and discrete water sample data into a single spreadsheet with data quality flags. This dataset includes hydrographic data from the Global Argentine Basin Array, which was located in the South Atlantic from March 2015 to January 2018. The Argentine Basin Array was useful for exploring the global carbon cycle because of its high biological productivity fueled by iron-laden dust from South America. With strong currents persisting on the seafloor and water mass mixing, this region has elevated levels of eddy kinetic energy similar to those in the Gulf Stream.


Coverage

Spatial Extent: N:-38.95 E:-42.12233333 S:-48.1005 W:-56.703
Temporal Extent: 2015-03-11 - 2018-01-16

Dataset Description

OOI-CGSN CTD Sampling Guidelines

In general, water samples are collected for analysis at depths that correspond to instrumentation making in situ measurements.  For example, Near Surface Instrument Frames (NSIFs) have instrumentation that measure dissolved oxygen (DO), salinity (CTD), nitrate (NUTNR), the partial pressure of CO2 (CO2), and chlorophyll a fluorescence, so water samples should be collected at the depth of the NSIF for analyses of all those parameters.  Additionally, as noted above, OOI water sampling data are valid long-term datasets in and of themselves. Thus, some measurement locations are driven by broader science questions.

Soak Time – The CTD rosette should be allowed to equilibrate (e.g., the CTD sensor readout stabilizes) at the desired target depth for at least 1 minute or more depending on conditions.  Longer soak times may occur to accommodate acoustic release testing or other activities.

Ancillary Sampling – It should also be noted that OOI/CGSN cruises may also include ancillary activities and personnel, such as the Northeast U.S. Shelf Long-Term Ecological Research (NES-LTER) group on Pioneer cruises or the Overturning in the Subpolar North Atlantic Program (OSNAP) on Irminger cruises.  These groups may conduct their own CTD casts, and/or collect water samples on OOI/CGSN CTD casts.  In some cases, they may collect the OOI/CGSN water samples for analysis.  Regardless of who collects the samples, all OOI/CGSN samples (as specified in the sections below) should be noted on the OOI/CGSN sampling logs (3404-00003).  Ancillary samples may be noted on OOI/CGSN sampling logs, but should be identified as part of the ancillary program.


Methods & Sampling

OOI Global Array Sampling Guidelines

Global Arrays are comprised of 2 sub-surface Flanking Moorings, 1 sub-surface Hybrid Profiler Mooring, and at the Irminger Sea Array 1 Surface Mooring.  Open Ocean Gliders and Global Profiling Gliders are also present at the Arrays. Subsections below define the strategy for sampling in the vicinity of each type of platform.  Given the number of depths required to be sampled at Global Arrays, a 24-bottle CTD rosette is required.

There are a few general guidelines which also inform the strategies defined below:

  • Nutrient data are useful when validating the Carbon system data.
  • Should get samples spanning the full water depth at one site at least (typically HYPM).
  • Only sample Chlorophyll in the euphotic zone where there is a fluorescence signal detected on the CTD casts. Collect at least one sample per Array where the fluorescence signal is negligible to confirm lack of Chlorophyll.

Sampling at the Global Surface Mooring Location

  • Sample the full suite (O2, Salts, Carbon, Nutrients, Chlorophyll) at the surface, 12, 40, 80, 130 m.
  • Sample Carbon at additional depths where pH sensors are mounted (at 20, 100 m).
  • Also sample O2 and Salts at intervals below 130 where there are CTD sensors.

Sampling at Global Flanking Mooring Locations

  • Sample the full suite (O2, Salts, Carbon, Nutrients, Chlorophyll) at 30 m.
  • Sample Chlorophyll additionally at surface and the chlorophyll max.
  • Sample Nutrients additionally at 130 m.
  • Also sample O2 and Salts at 60, 90, 130, 250, 500, 1000, 1500 m

Sampling at the Global Hybrid Profiler Mooring Location

  • Sample the full suite (O2, Salts, Carbon, Nutrients, Chlorophyll) at 30 m.
  • Sample Chlorophyll additionally at surface and the chlorophyll max, and also at 150 m if there is fluorescence signal.
  • Sample O2 and Salts at 150 m, and ~4-6 places along the profiler path(s)

Sampling at Global Profiling Glider Deployment and Recovery Locations

  • Sample O2, Salts and Nutrients at the surface, 30, 50, 100 and 200 m.
  • Sample Chlorophyll at the surface, 30, 50, 100, and 200 m (if there is a fluorescence signal).

Sampling at Open Ocean Glider Deployment and Recovery Locations

  • Sample O2 and Salts at the surface, 30, 50, and every 100 m from 100-1000 m.
  • Sample Chlorophyll at the surface, 30, 50, 100, and 200 m (if there is a fluorescence signal).

Methodology

Salinity

Salinity measurements are performed following the methodology outlined in the WHOI Hydrography Blue Book, Automated Oxygen Titration and Salinity Determination (Knapp et al. 1990). Measurements are performed using a Guildline Autosal model 8400B salinometer (Guildline Instruments of Canada). Manufacturer stated accuracy and precision at 35 psu is +/- 0.003 psu and 0.0002 psu. IAPSO standard seawater is used to standardize the Autosal daily before runs.

Oxygen

Dissolved oxygen measurements are performed following the methodology outlined in the WHOI Hydrography Blue Book _Automated Oxygen Titration and Salinity Determination_ (Knapp et al. 1990). Measurements are performed using a Metrohm Model 888 Titrando dosing device, with the titration endpoint determined amperometrically. Stated accuracy is 0.02 ml/l, with a precision of 0.001 ml/l.

Nutrients

All nutrient values are reported as the average of triplicate analysis on a single collected sample.

Carbon System

Carbon system measurements are performed by the Wang lab (Woods Hole Oceanographic Institution). DIC and TA measurements follow the methodology of Wang and Cai (2004) with uncertainties of 2 umol/kg. DIC measurements are performed with an Apollo Sci-Tech AS-C3. TA measurements are performed with an Apollo Sci-Tech AS-ALK2 and ROSS electrode. pH measurements follow the methodology of Clayton and Byrne (1993) with an uncertainty of 0.002 pH units using an Agilent 8453.

Chlorophyll and Phaeo

Analysis was completed using a Turner Designs Aquafluor Handheld 800446.

 


Data Processing Description

File/row Representation of Water Samples

There should be one row for each station-cast-niskin bottle. Multiple samples for the same parameter from a single niskin bottle are split into separate rows, with the associated CTD data copied to the new row. The first row of the file is the column headers.

Data Fill Values and Flag Description

The data flags are presented in the summary sheet as a 16-bit array, read from right-to-left, where a 1 in a particular bit position indicates a particular flag meaning applies. For example, a flag of 0000000000000010 for the column **CTD_File_Flag** indicates that the cast was a data cast only.

Additionally, these data flags an assessment of the collection and processing of the relevant data or samples, and are not an assessment of the *accuracy* of the data. For example, a conductivity sensor which has the correct calibration coefficients and functions normally will receive a quality flag of 0000000000000100 (acceptable measurement). However, the calibration coefficients may be out of date and off with respect to the discrete salinity results; this does not affect the assigned flag.

For full details about flag meanings, refer to the Readme files available for download in the Supplemental Files section of this metadata page. 


BCO-DMO Processing Description

- Units removed from column header names
- Spaces in column headers removed and replaced with underscores ("_")
- -999999 no data values replaced with blank values
- "not detected" lab values (>0.03 and >0.04)replaced with blank values
- "Bottom Depth at Start Position" estimated values (>5000 meters) replaced with blank values


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Data Files

File
914105_v1_ooi_argentine_basin_discrete_water_sampling.csv
(Comma Separated Values (.csv), 298.07 KB)
MD5:c1062c11b9e7ba91b59378efcd5c4752
Primary data file for dataset ID 914105, version 1

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Supplemental Files

File
OOI User Terms and Conditions for dataset reuse
filename: 1102-00020_Data_User_Terms_Conditions_OOI_2019-01-02_Ver_2-00.pdf
(Portable Document Format (.pdf), 124.89 KB)
MD5:e8d842c84cdda505e781a5cb30f086da
These OOI User Terms and Conditions pertain to the definition, collection, distribution, and use of all data and materials collected and produced by the OOI. Details on data use, limitations and disclaimers are detailed within this document.
OOI-CGSN ReadMe File for Discrete Water Sampling Data from Argentine Basin Array Deployment 1 (AT26-30)
filename: drive-download-20231207T180437Z-001/Argentine_Basin-01_AT26-30_Discrete_Summary_README.txt
(Plain Text, 9.97 KB)
MD5:48a29219e65ceec916d48328519428b2
OOI-CGSN ReadMe File for Discrete Water Sampling Data from Argentine Basin Array Deployment 2 (NBP1510)
filename: drive-download-20231207T180437Z-001/Argentine_Basin-02_NBP1510_Discrete_Summary_README.txt
(Plain Text, 10.19 KB)
MD5:2d6c958c2458266b6ca9c5e863096541
OOI-CGSN ReadMe File for Discrete Water Sampling Data from Argentine Basin Array Deployment 3 (NBP1609)
filename: drive-download-20231207T180437Z-001/Argentine_Basin-03_NBP1609_Discrete_Summary_README.txt
(Plain Text, 9.83 KB)
MD5:8385751b18b6f7b7a10e8d875487e213
OOI-CGSN ReadMe File for Discrete Water Sampling Data from Argentine Basin Array Deployment 4 (AT39-03)
filename: drive-download-20231207T180437Z-001/Argentine_Basin-04_AT39-03_Discrete_Summary_README.txt
(Plain Text, 10.99 KB)
MD5:1d44ca3ffa912e3b02fbb477a33d5575

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Related Publications

Clayton, T. D., & Byrne, R. H. (1993). Spectrophotometric seawater pH measurements: total hydrogen ion concentration scale calibration of m-cresol purple and at-sea results. Deep Sea Research Part I: Oceanographic Research Papers, 40(10), 2115–2129. doi:10.1016/0967-0637(93)90048-8
Methods
Knapp, G. P., Stalcup, M. C., & Staney, R. J. (1990). Automated oxygen titration and salinity determination. https://doi.org/10.1575/1912/1020
Methods
Wang, Z. A., & Cai, W.-J. (2004). Carbon dioxide degassing and inorganic carbon export from a marsh-dominated estuary (the Duplin River): A marsh CO2pump. Limnology and Oceanography, 49(2), 341–354. doi:10.4319/lo.2004.49.2.0341
Methods

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Parameters

ParameterDescriptionUnits
CruiseCruise name associated with data collection. unitless
StationStation ID number. Station numbers are unique per cruise but not unique within the overall dataset. unitless
Target_AssetOOI platform located near to where the cast is made. Typically this is representative of a mooring or glider deployment or recovery location, or the location of a test cast. unitless
Start_LatitudeLatitude derived from the elog reading at the beginning of the cast. unitless
Start_LongitudeLongitude derived from the elog reading at the beginning of the cast. unitless
Start_TimeStart time of the cast. unitless
CastCast ID number. unitless
Cast_Flag16-bit array data quality flag indicating any relevant nuances or details related to the particular cast. For full flag details, see the Readme file for this dataset, available in the Supplemental Files section of the related BCO-DMO metadata page. unitless
Bottom_Depth_at_Start_PositionDepth of seafloor at the start time of a cast. meters
CTD_FileFile name of CTD file generated during a cast. unitless
CTD_File_Flag16-bit array data quality flag indicating any relevant nuances or details related to the CTD file. For full flag details, see the Readme file for this dataset, available in the Supplemental Files section of the related BCO-DMO metadata page. unitless
Niskin_Bottle_PositionPosition of niskin bottle in the CTD rosette. unitless
Niskin_Flag16-bit array data quality flag indicating any relevant nuances or details related to the Niskin bottle. For full flag details, see the Readme file for this dataset, available in the Supplemental Files section of the related BCO-DMO metadata page. unitless
CTD_Bottle_Closure_TimeDatetime of Niskin bottle closure. unitless
CTD_PressurePressure measurement from CTD digiquartz pressure sensor. db
CTD_Pressure_Flag16-bit array data quality flag indicating any relevant nuances or details related to the CTD pressure reading. For full flag details, see the Readme file for this dataset, available in the Supplemental Files section of the related BCO-DMO metadata page. unitless
CTD_DepthDepth of seafloor at the CTD_Bottle_Closure_Time. meters
CTD_LatitudeLatitude of CTD at the CTD_Bottle_Closure_Time. unitless
CTD_LongitudeLongitude of CTD at the CTD_Bottle_Closure_Time. unitless
CTD_Temperature_1Temperature measurement from CTD ITS-90 temperature sensor at the CTD_Bottle_Closure_Time. deg C
CTD_Temperature_1_Flag16-bit array data quality flag indicating any relevant nuances or details related to CTD_Temperature_1. For full flag details, see the Readme file for this dataset, available in the Supplemental Files section of the related BCO-DMO metadata page. unitless
CTD_Temperature_2Temperature measurement from CTD ITS-90 temperature sensor at the CTD_Bottle_Closure_Time. deg C
CTD_Temperature_2_Flag16-bit array data quality flag indicating any relevant nuances or details related to CTD_Temperature_2. For full flag details, see the Readme file for this dataset, available in the Supplemental Files section of the related BCO-DMO metadata page. unitless
CTD_Conductivity_1CTD conductivity measurement at the CTD_Bottle_Closure_Time. S/m
CTD_Conductivity_1_Flag16-bit array data quality flag indicating any relevant nuances or details related to CTD_Conductivity_1. For full flag details, see the Readme file for this dataset, available in the Supplemental Files section of the related BCO-DMO metadata page. unitless
CTD_Conductivity_2CTD conductivity measurement at the CTD_Bottle_Closure_Time. S/m
CTD_Conductivity_2_Flag16-bit array data quality flag indicating any relevant nuances or details related to CTD_Conductivity_2. For full flag details, see the Readme file for this dataset, available in the Supplemental Files section of the related BCO-DMO metadata page. unitless
CTD_Salinity_1Salinity value calculated from CTD_Conductivity_1 PSU
CTD_Salinity_2Salinity value calculated from CTD_Conductivity_2 PSU
CTD_OxygenOxygen measurement taken at CTD_Bottle_Closure_Time by the SBE 43 sensor. mL/L
CTD_Oxygen_Flag16-bit array data quality flag indicating any relevant nuances or details related to CTD_Oxygen. For full flag details, see the Readme file for this dataset, available in the Supplemental Files section of the related BCO-DMO metadata page. unitless
CTD_Oxygen_SaturationDerived oxygen saturation value at time of CTD_Bottle_Closure_Time. This calculation is based on the Garcia & Gordon equation. mL/L
CTD_FluorescenceCTD fluorescence measurement taken at time of CTD_Bottle_Closure_Time. CGSN does not typically measure this parameter on CTD casts. mg/m^3
CTD_Fluorescence_Flag16-bit array data quality flag indicating any relevant nuances or details related to CTD_Fluorescence. For full flag details, see the Readme file for this dataset, available in the Supplemental Files section of the related BCO-DMO metadata page. unitless
CTD_Beam_AttenuationBeam Attenuation measurement from WET Labs C-Star sensor taken at CTD_Bottle_Closure_Time. 1/m
CTD_Beam_TransmissionBeam transmission measurement from WET Labs C-Star sensor taken at time of CTD_Bottle_Closure_Time. %
CTD_Transmissometer_Flag16-bit array data quality flag indicating any relevant nuances or details related to CTD_Beam_Attenuation. For full flag details, see the Readme file for this dataset, available in the Supplemental Files section of the related BCO-DMO metadata page. unitless
CTD_pHpH measurement taken from CTD cast. CGSN does not measure this parameter on CTD casts. unitless
Discrete_OxygenDiscrete Oxygen value taken from the collected water sample. mL/L
Discrete_Oxygen_Flag16-bit array data quality flag indicating any relevant nuances or details related to Discrete_Oxygen. For full flag details, see the Readme file for this dataset, available in the Supplemental Files section of the related BCO-DMO metadata page. These flags can be traced back to comments written in the CTD Sampling Log. unitless
Discrete_Oxygen_Replicate_Flag16-bit array data quality flag indicating any relevant nuances or details related to Discrete_Oxygen replicates. For full flag details, see the Readme file for this dataset, available in the Supplemental Files section of the related BCO-DMO metadata page. These flags can be traced back to comments written in the CTD Sampling Log. unitless
Discrete_ChlorophyllDiscrete Chlorophyll measurement taken from the collected water sample. ug/L
Discrete_PhaeopigmentDiscrete phaeopigment measurement taken from the collected water sample. ug/L
Discrete_Fo_Fa_RatioAcidification ratio for pure Chl. CGSN does not measure this parameter. unitless
Discrete_Fluorescence_Flag16-bit array data quality flag indicating any relevant nuances or details related to Discrete_Fluorescence. For full flag details, see the Readme file for this dataset, available in the Supplemental Files section of the related BCO-DMO metadata page. unitless
Discrete_Fluorescence_Replicate_Flag16-bit array data quality flag indicating any relevant nuances or details related to Discrete_Oxygen replicates. For full flag details, see the Readme file for this dataset, available in the Supplemental Files section of the related BCO-DMO metadata page. unitless
Discrete_PhosphateAverage discrete phospate value taken from across replicate values from water sample. uM
Discrete_SilicateAverage discrete silicate value taken from across replicate values from water sample. uM
Discrete_NitrateAverage discrete nitrate value taken from across replicate values from water sample. uM
Discrete_NitriteAverage discrete nitrite value taken from across replicate values from water sample. uM
Discrete_AmmoniumAverage discrete ammonium value taken from across replicate values from water sample. uM
Discrete_Nutrients_Flag16-bit array data quality flag indicating any relevant nuances or details related to discrete nutrient values. For full flag details, see the Readme file for this dataset, available in the Supplemental Files section of the related BCO-DMO metadata page. Commonly flagged issues include leaking Niskin or open vent (1000). unitless
Discrete_Nutrients_Replicate_Flag16-bit array data quality flag indicating any relevant nuances or details related to nutrient replicate values. For full flag details, see the Readme file for this dataset, available in the Supplemental Files section of the related BCO-DMO metadata page. If two samples were taken from the same niskin the flag value will be 1000. unitless
Discrete_SalinityDiscrete salinity value taken from water sample. psu
Discrete_Salinity_Flag16-bit array data quality flag indicating any relevant nuances or details related to Discrete_Salinity. For full flag details, see the Readme file for this dataset, available in the Supplemental Files section of the related BCO-DMO metadata page. unitless
Discrete_Salinity_Replicate_Flag16-bit array data quality flag indicating any relevant nuances or details related to discrete salinity replicates. For full flag details, see the Readme file for this dataset, available in the Supplemental Files section of the related BCO-DMO metadata page. unitless
Discrete_AlkalinityDiscrete alkalinity value taken from water sample. umol/kg
Discrete_Alkalinity_Flag16-bit array data quality flag indicating any relevant nuances or details related to Discrete_Alkalinity. For full flag details, see the Readme file for this dataset, available in the Supplemental Files section of the related BCO-DMO metadata page. unitless
Discrete_Alkalinity_Replicate_Flag16-bit array data quality flag indicating any relevant nuances or details related to discrete alkalinity replicates. For full flag details, see the Readme file for this dataset, available in the Supplemental Files section of the related BCO-DMO metadata page. unitless
Discrete_DICDiscrete dissolved inorganic carbon (DIC) value from water sample. umol/kg
Discrete_DIC_Flag16-bit array data quality flag indicating any relevant nuances or details related to Discrete_DIC. For full flag details, see the Readme file for this dataset, available in the Supplemental Files section of the related BCO-DMO metadata page. unitless
Discrete_DIC_Replicate_Flag16-bit array data quality flag indicating any relevant nuances or details related to discrete dissolved inorganic carbon (DIC) replicates. For full flag details, see the Readme file for this dataset, available in the Supplemental Files section of the related BCO-DMO metadata page. unitless
Discrete_pCO2Discrete partial pressure of carbon dioxide (pCO2) taken from water sample. CGSN typically does not measure this parameter. uatm
pCO2_Analysis_TempDiscrete partial pressure of carbon dioxide (pCO2) analysis temperature. CGSN typically does not measure this parameter. deg C
Discrete_pCO2_Flag16-bit array data quality flag indicating any relevant nuances or details related to Discrete_pCO2. For full flag details, see the Readme file for this dataset, available in the Supplemental Files section of the related BCO-DMO metadata page. unitless
Discrete_pCO2_Replicate_Flag16-bit array data quality flag indicating any relevant nuances or details related to discrete pCO2 replicates. For full flag details, see the Readme file for this dataset, available in the Supplemental Files section of the related BCO-DMO metadata page. unitless
Discrete_pHDiscrete pH value taken from water sample. Typically not as many pH samples are taken as DIC or Total Alkalinity samples. unitless
pH_Analysis_TemppH analysis temperature value taken from water sample. deg C
Discrete_pH_Flag16-bit array data quality flag indicating any relevant nuances or details related to Discrete_pH. For full flag details, see the Readme file for this dataset, available in the Supplemental Files section of the related BCO-DMO metadata page. unitless
Discrete_pH_Replicate_Flag16-bit array data quality flag indicating any relevant nuances or details related to discrete pH replicates. For full flag details, see the Readme file for this dataset, available in the Supplemental Files section of the related BCO-DMO metadata page. unitless
Calculated_AlkalinityCalculated alkalinity value from water sample. umol/kg
Calculated_DICCalculated dissolved inorganic carbon (DIC) value from water sample. umol/kg
Calculated_pCO2Calculated partial pressure of carbon dioxide (pCO2) value from water sample. uatm
Calculated_pHCalculated pH value from water sample. unitless
Calculated_CO2aqCalculated carbon dioxide dissolved in an aqueous solution (CO2aq) value from water sample. umol/kg
Calculated_BicarbCalculated sodium bicarbonate (bicarb) value from water sample. umol/kg
Calculated_CO3Calculated carbon trioxide (CO3) value from water sample. umol/kg
Calculated_OmegaCCalculated Omega C value from water sample. unitless
Calculated_OmegaACalculated Omega A value from water sample. unitless


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Instruments

Dataset-specific Instrument Name
Niskin
Generic Instrument Name
Niskin bottle
Dataset-specific Description
Niskin bottles on CTD rosette used to collect water samples. 
Generic Instrument 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.

Dataset-specific Instrument Name
SBE 43
Generic Instrument Name
Sea-Bird SBE 43 Dissolved Oxygen Sensor
Dataset-specific Description
SBE used to determine CTD oxygen values.
Generic Instrument 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

Dataset-specific Instrument Name
8400B salinometer (Guildline Instruments of Canada)
Generic Instrument Name
Autosal salinometer
Dataset-specific Description
Salinity measurements are performed following the methodology outlined in the WHOI Hydrography Blue Book _Automated Oxygen Titration and Salinity Determination_(Knapp et al. 1990). Measurements are performed using a Guildline Autosal model 8400B salinometer (Guildline Instruments of Canada). Manufacturer stated accuracy and precision at 35 psu is +/- 0.003 psu and 0.0002 psu. IAPSO standard seawater is used to standardize the Autosal daily before runs.
Generic Instrument Description
The salinometer is an instrument for measuring the salinity of a water sample.

Dataset-specific Instrument Name
WET Labs C-Star
Generic Instrument Name
Wet Labs CSTAR Transmissometer
Dataset-specific Description
Used to determine Beam Attenuation and Beam Transmission values.
Generic Instrument 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

Dataset-specific Instrument Name
Metrohm Model 888 Titrando dosing device
Generic Instrument Name
Automatic titrator
Dataset-specific Description
Dissolved oxygen measurements are performed following the methodology outlined in the WHOI Hydrography Blue Book _Automated Oxygen Titration and Salinity Determination_ (Knapp et al. 1990). Measurements are performed using a Metrohm Model 888 Titrando dosing device, with the titration endpoint determined amperometrically. Stated accuracy is 0.02 ml/l, with a precision of 0.001 ml/l.
Generic Instrument Description
Instruments that incrementally add quantified aliquots of a reagent to a sample until the end-point of a chemical reaction is reached.

Dataset-specific Instrument Name
Apollo Sci-Tech AS-ALK2 and ROSS electrode
Generic Instrument Name
Apollo SciTech AS-ALK2 total alkalinity titrator
Dataset-specific Description
Carbon system measurements are performed by the Wang lab (Woods Hole Oceanographic Institution). DIC and TA measurements follow the methodology of Wang and Cai (2004) with uncertainties of 2 umol/kg. DIC measurements are performed with an Apollo Sci-Tech AS-C3. TA measurements are performed with an Apollo Sci-Tech AS-ALK2 and ROSS electrode. pH measurements follow the methodology of Clayton and Byrne (1993) with an uncertainty of 0.002 pH units using an Agilent 8453.
Generic Instrument Description
An automated acid-base titrator for use in aquatic carbon dioxide parameter analysis. The titrator provides standardisation and sample analysis, using the Gran titration procedure for alkalinity determination of seawater and brackish waters. It is designed for both shipboard and land based laboratory use. The precision of the instrument is 0.1 percent or higher, and sample volumes may range from 10-25 ml. Titration takes approximately 8 minutes per sample, and the repeatability is within plus or minus 1-2 micromoles per kg.


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Deployments

AT26-30

Website
Platform
R/V Atlantis
Start Date
2015-03-08
End Date
2015-03-26
Description
Ocean Observatories Initiative (OOI): Argentine Basin Array, Leg 1.

AT39-03

Website
Platform
R/V Atlantis
Start Date
2018-01-04
End Date
2018-01-22
Description
OOI Argentine Basin/OOI MREFC.

NBP1510

Website
Platform
RVIB Nathaniel B. Palmer
Start Date
2015-11-07
End Date
2015-12-03
Description
Ocean Observatories Initiative (OOI): Argentine Basin Array, Leg 2.

NBP1609

Website
Platform
RVIB Nathaniel B. Palmer
Start Date
2016-10-20
End Date
2016-11-15
Description
Ocean Observatories Initiative (OOI): Argentine Basin Array, Leg 3.


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Project Information

OOI Discrete CTD and Water Sampling Cruise Data (OOI Cruise Data)



The hydrographic sampling performed by OOI/CGSN as part of each Array turn represents a significant collection of valuable physical, chemical, and biological information. The collected hydrographic data include oxygen, salinity, nutrient (nitrate, nitrite, silicate, phosphate, ammonium), chlorophyll, and carbon system (dissolved inorganic carbon, total alkalinity, pH and/ partial pressure of CO2) measurements. These data serve several important functions. First, they are necessary for the validation and evaluation of the moored instrumentation at each Array. Furthermore, the annual (Global) or biannual (Coastal) collection of data at the same locations provides a unique timeseries of a large set of water properties following established community standards and methods, independent of its association with the OOI instrumentation.

 



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Program Information

Ocean Observatories Initiative (OOI)



The Ocean Observatories Initiative (OOI) is a science-driven ocean observing network that delivers real-time data to address critical science questions regarding the world's oceans. Funded by the National Science Foundation to encourage scientific investigation, OOI data are freely available online to anyone with an Internet connection. OOI was designed as a long-term project to collect ocean data for up to 30 years. This longevity makes it possible to measure and directly observe both short-lived episodic events and longer-term changes occurring in the ocean. Such data make it possible to better understand ocean processes and how the ocean is changing.

The OOI has five active research arrays that comprise the three major observatory elements linked together by instrument, infrastructure, and information management systems. Global Ocean Arrays consist of moored arrays and autonomous vehicles that provide time-series observations and mesoscale spatial sampling at sparsely sampled, high-latitude regions critical to our understanding of climate, the carbon cycle, and ocean circulation. The Regional Cabled Array consists of fiber-optic cables off the Oregon coast that provide unprecedented power, bandwidth, and communication to seafloor instrumentation and profiler moorings, enabling monitoring of volcanic and hydrothermal activity, methane seeps, earthquakes, and myriad ocean processes in coastal and blue water environments. Coastal Arrays consist of cross-shelf moored arrays and autonomous vehicles that observe the dynamic coastal environment, enabling examination of upwelling, shelf break fronts, and cross-shelf exchanges.

These marine arrays are outfitted with more than 900 instruments — of 45 different types — measuring more than 200 different parameters. These instruments gather physical, chemical, geological, and biological data – from the air-sea interface to the seafloor. The data collected are transmitted through a cyberinfrastructure, an information management system that allows users to access real- to near real-time data from suites of sensors. The OOI provides annotations and automated quality control for data streams and is working to meet the IOOS Quality Assurance of Real Time Ocean Data (QARTOD) standards.



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Funding

Funding SourceAward
NSF Division of Ocean Sciences (NSF OCE)
NSF Division of Ocean Sciences (NSF OCE)
NSF Division of Ocean Sciences (NSF OCE)

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