Dataset Overview | National Centers for Environmental Information (NCEI)

Dissolved inorganic carbon (DIC), total alkalinity, pH on seawater scale, chlorofluorocarbon 12 (CFC-12), nutrients, water temperature, salinity, dissolved oxygen and other hydrographic and chemical data collected from discrete samples and profile observations during the R/V Johan Hjort cruise JH2019205 (EXPOCODE 58JH20190515) in the North Atlantic Ocean, Nordic Seas from 2019-05-15 to 2019-06-04 (NCEI Accession 0236506)

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This dataset consists of dissolved inorganic carbon (DIC), total alkalinity, pH on seawater scale, chlorofluorocarbon 12 (CFC-12), nutrients, water temperature, salinity, dissolved oxygen and other hydrographic and chemical data collected from discrete samples and profile observations during the R/V Johan Hjort cruise JH2019205 (EXPOCODE 58JH20190515) in the North Atlantic Ocean, Nordic Seas from 2019-05-15 to 2019-06-04. The purpose was to monitoring of the IMR standard transects Svinøy, Gimsøy, Bjørnøya-Vest, and Fugløya-Bjørnøya. IMR takes biological (plankton), chemical (macronutrients, chlorophyll), and physical (CTD, ADCP) data at these sections several times every year. In addition, several Argo-floats were deployed. In order to get validation samples for the BGC-Argo floats staff from UiB and NORCE joined the cruise to collect and analyze carbonate chemistry (DIC, AT, pH), oxygen, and trace gas (CFC-12, SF6) data. This metadata describes these chemical data, as well as the macronutrients and salinity data.

Dataset Citation

Cite as: Lauvset, Siv K.; Becker, Meike; Jackson-Misje, Kristin; Lunde, Linda Fonnes (2021). Dissolved inorganic carbon (DIC), total alkalinity, pH on seawater scale, chlorofluorocarbon 12 (CFC-12), nutrients, water temperature, salinity, dissolved oxygen and other hydrographic and chemical data collected from discrete samples and profile observations during the R/V Johan Hjort cruise JH2019205 (EXPOCODE 58JH20190515) in the North Atlantic Ocean, Nordic Seas from 2019-05-15 to 2019-06-04 (NCEI Accession 0236506). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0236506. Accessed [date].

Dataset Identifiers

ISO 19115-2 Metadata

gov.noaa.nodc:0236506

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Distribution Formats	Originator data format
Ordering Instructions	Contact NCEI for other distribution options and instructions.
Distributor	NOAA National Centers for Environmental Information +1-301-713-3277 ncei.info@noaa.gov
Dataset Point of Contact	NOAA National Centers for Environmental Information ncei.info@noaa.gov

Time Period	2019-05-15 to 2019-06-04
Spatial Bounding Box Coordinates	West: -4.75 East: 20 South: 62.95 North: 74.5
Spatial Coverage Map

General Documentation

Project Metadata
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Associated Resources

Seamless access to Norwegian marine data
- http://metadata.nmdc.no/metadata-api/landingpage/02ec19a6a7ea46e554f000c93692d7da
  related resource
CLIVAR Repeat Section 75°N
- https://www.ncei.noaa.gov/access/ocean-carbon-acidification-data-system/oceans/RepeatSections/clivar_75N.html
  related resource
NOAA National Centers for Environmental Information (2022). Ocean Carbon and Acidification Data System (OCADS). NOAA National Centers for Environmental Information. https://www.ncei.noaa.gov/products/ocean-carbon-acidification-data-system
- https://www.ncei.noaa.gov/products/ocean-carbon-acidification-data-system
  OCADS website

Publication Dates	publication: 2021-06-17
Data Presentation Form	Digital table - digital representation of facts or figures systematically displayed, especially in columns
Dataset Progress Status	Complete - production of the data has been completed Historical archive - data has been stored in an offline storage facility
Data Update Frequency	As needed
Purpose	This dataset is available to the public for a wide variety of uses including scientific research and analysis.
Use Limitations	accessLevel: Public Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.

Dataset Citation	Cite as: Lauvset, Siv K.; Becker, Meike; Jackson-Misje, Kristin; Lunde, Linda Fonnes (2021). Dissolved inorganic carbon (DIC), total alkalinity, pH on seawater scale, chlorofluorocarbon 12 (CFC-12), nutrients, water temperature, salinity, dissolved oxygen and other hydrographic and chemical data collected from discrete samples and profile observations during the R/V Johan Hjort cruise JH2019205 (EXPOCODE 58JH20190515) in the North Atlantic Ocean, Nordic Seas from 2019-05-15 to 2019-06-04 (NCEI Accession 0236506). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0236506. Accessed [date].
Cited Authors	Lauvset, Siv K. Bjerknes Centre for Climate Research Becker, Meike GEOMAR Helmholtz Centre for Ocean Research Kiel (GEOMAR) Jackson-Misje, Kristin Lunde, Linda Fonnes Institute of Marine Research - Norway (IMR)
Principal Investigators	Siv K. Lauvset Bjerknes Centre for Climate Research Meike Becker GEOMAR Helmholtz Centre for Ocean Research Kiel (GEOMAR)
Collaborators	Linda Fonnes Lunde Institute of Marine Research - Norway (IMR) Kristin Jackson-Misje
Contributors	University of Bergen; Geophysical Institute (GFI)
Resource Providers	Siv K. Lauvset NORCE Norwegian Research Centre University of Bergen; Geophysical Institute (GFI)
Publishers	NOAA National Centers for Environmental Information
Acknowledgments	Funding Information: Research Council of Norway (NorArgo2)

Theme keywords	NODC DATA TYPES THESAURUS CHLOROFLUOROCARBON-12 (CFC-12) DISSOLVED INORGANIC CARBON (DIC) DISSOLVED OXYGEN NITRATE NITRITE pH phosphate SALINITY silicate sulfur hexafluoride (SF6) total alkalinity WATER TEMPERATURE NODC OBSERVATION TYPES THESAURUS chemical discrete sample physical profile WMO_CategoryCode oceanography Global Change Master Directory (GCMD) Science Keywords EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > ALKALINITY EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > INORGANIC CARBON EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > NITRATE EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > NITRITE EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > OXYGEN EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > PH EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > PHOSPHATE EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > SILICATE EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE EARTH SCIENCE > OCEANS > SALINITY/DENSITY > SALINITY OCADS Study Type Discrete measurement Provider Variable Abbreviations ALKALI CFC12 CTDOXY CTDSAL NITRAT NITRIT OXYGEN PHSPHT PH_TOT SALNTY SF6 SILCAT TCARBN
Data Center keywords	NODC COLLECTING INSTITUTION NAMES THESAURUS University of Bergen; Geophysical Institute NODC SUBMITTING INSTITUTION NAMES THESAURUS University of Bergen; Geophysical Institute Global Change Master Directory (GCMD) Data Center Keywords U-BERGEN/GEOPH > Geophysical Institute, University of Bergen
Platform keywords	NODC PLATFORM NAMES THESAURUS JOHAN HJORT
Instrument keywords	NODC INSTRUMENT TYPES THESAURUS carbon dioxide (CO2) gas analyzer CTD Niskin bottle nutrient autoanalyzer oxygen sensor pH sensor temperature sensor titrator Global Change Master Directory (GCMD) Instrument Keywords AUTOANALYZER > AUTOANALYZER CO2 ANALYZERS > CO2 ANALYZERS CTD > Conductivity, Temperature, Depth NISKIN BOTTLES OXYGEN METERS > OXYGEN METERS PH METERS > PH METERS TEMPERATURE SENSORS > TEMPERATURE SENSORS
Place keywords	NODC SEA AREA NAMES THESAURUS Greenland Sea (including Iceland Sea and North Greenland Sea) North Atlantic Ocean Norwegian Sea Global Change Master Directory (GCMD) Location Keywords OCEAN > ARCTIC OCEAN OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN > NORWEGIAN SEA Provider Geographic Names Nordic Seas North Atlantic Ocean
Project keywords	NODC PROJECT NAMES THESAURUS GLOBAL OCEAN DATA ANALYSIS PROJECT (GLODAP) Cruise ID JH2019205 EXPOCODE 58JH20190515 Global Change Master Directory (GCMD) Project Keywords GLODAP > Global Ocean Data Analysis Project Ocean Acidification Search Keywords Ocean Carbon and Acidification Data System (OCADS) Project Reference Section ID Bjørnoya Vest Fugloya-Bjoernoya Gimsoy Svinoy
Keywords	NCEI ACCESSION NUMBER 0236506

Use Constraints	Cite as: Lauvset, Siv K.; Becker, Meike; Jackson-Misje, Kristin; Lunde, Linda Fonnes (2021). Dissolved inorganic carbon (DIC), total alkalinity, pH on seawater scale, chlorofluorocarbon 12 (CFC-12), nutrients, water temperature, salinity, dissolved oxygen and other hydrographic and chemical data collected from discrete samples and profile observations during the R/V Johan Hjort cruise JH2019205 (EXPOCODE 58JH20190515) in the North Atlantic Ocean, Nordic Seas from 2019-05-15 to 2019-06-04 (NCEI Accession 0236506). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0236506. Accessed [date].
Access Constraints	Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
Fees	In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media.

Lineage information for: dataset
Processing Steps	2021-06-17T23:10:11Z - NCEI Accession 0236506 v1.1 was published.
Output Datasets	NCEI Accession 0236506 v1.1 NCEI Accession 0236506 v1.1 (download) published 2021-06-17T23:10:11Z

Lineage information for: dataset
Processing Steps	Parameter or Variable: Dissolved Inorganic Carbon; Abbreviation: TCARBN; Unit: micro-mol per kg; Observation type: profile; Measured or calculated: measured; Calculation method and parameters: NA; Sampling instrument: niskin; Analyzing instrument: VINDTA 3D; Detailed sampling and analyzing information: Onboard samples were drawn from niskin bottles following SOP as outlined in Dickson et al (2007) and analyzed immediately (no poisoning). Samples taken for analysis on land were drawn from niskin bottles following SOP as outlined in Dickson et al (2007), poisoned with HgCl2 and stored in a dark cool environment. Samples were analyzed within 6 weeks of end of cruise.; Replicate information: 1 full test where all niskins were filled at same depth; one sample analyzed twice in a row on 50% of stations; Standardization description: CRM; Standardization frequency: CRM analyzed before and after each full profile; CRM manufacturer: Andrew Dickson; Preservation method: HgCl2; Preservative volume: one drop in 500mL volume; Preservative correction: none; Uncertainty: 1.5 micro-mol per kg; Quality flag convention: WOCE flags: 2=acceptable; 3=questionable; 4=bad; 6=mean of replicates;9=missing; Method reference: Dickson 2007; Researcher name: Siv K. Lauvset; Researcher institution: NORCE Norwegian Research Centre. Parameter or Variable: Total alkalinity; Abbreviation: ALKALI; Unit: micro-mol per kg; Observation type: profile; Measured or calculated: measured; Calculation method and parameters: NA; Sampling instrument: niskin; Analyzing instrument: VINDTA 3S; Type of titration: double endpoint; Cell type (open or closed): open; Curve fitting method: non-linear curve fitting using results from a modified GRAN plot; Detailed sampling and analyzing information: Onboard samples were drawn from niskin bottles following SOP as outlined in Dickson et al (2007) and analyzed immediately (no poisoning). Samples taken for analysis on land were drawn from niskin bottles following SOP as outlined in Dickson et al. (2007), poisoned with HgCl2 and stored in a dark cool environment. Samples were analyzed within 6 weeks of end of cruise.; Replicate information: none; Standardization description: CRM; Standardization frequency: CRM analyzed before and after each full profile; CRM manufacturer: Andrew Dickson; Preservation method: HgCl2; Preservative volume: one drop in 500mL volume; Preservative correction: none; TA blank correction: NA; Uncertainty: 2.5 micro-mol per kg; Quality flag convention: WOCE flags: 2=acceptable; 3=questionable; 4=bad; 6=mean of replicates;9=missing; Method reference: Dickson et al. 2007; Researcher name: Siv K. Lauvset; Researcher institution: NORCE Norwegian Research Centre. Parameter or Variable: pH; Abbreviation: PH_TOT; pH scale: total; Observation type: profile; Measured or calculated: measured; Calculation method and parameters: NA; Sampling instrument: niskin; Analyzing instrument: Jasco spectrophotometer; Temperature of pH measurement: 25C on stations 488-535 and 575-592, ~20C on stations 536-569. All pH data were recalculated to 25C and are presented at that temperature in the data file; Detailed sampling and analyzing information: Samples drawn from niskins into 250mL glass bottles following Dickson et al (2007). For leg 1 we used a water jacketed 10cm cell for temperature control, and automated pumping. Analysis following Carter et al (2013). For leg 2 we were unable to use the water jacketed cell so instead used a normal 10cm cell. Temperature was measured and recorded before and after analysis. Analysis following Carter et al (2013). Data corrected to 25C after analysis (using the measured AT); Replicate information: one duplicate run on each profile; Standardization description: TRIS and CRM; Standardization frequency: CRM run at least once for each full profile. Each CRM run 2-4 times for replication analysis. We brought 10 bottles of TRIS. These were analyzed at regular intervals throughout the cruise; pH standard values: TRIS: 8.0932; CRM: 7.883 (calculated from certified DIC and AT values using Merhbach K1/K2 constants refit by Dickson and Millero, Dickson for KSO4 constant, Lee et al for total boron, Dickson and Riley for KF constant); Temperature of standardization: 25C; Temperature correction method: CO2SYS with measured AT; At what temperature was pH reported: 25C; Quality flag convention: WOCE flags: 2=acceptable; 3=questionable; 4=bad; 6=mean of replicates;9=missing; Method reference: Carter et al 2013; Researcher name: Siv K. Lauvset; Researcher institution: NORCE Norwegian Research Centre. Parameter or Variable: dissolved oxygen in seawater; Abbreviation: OXYGEN; Unit: micro-mol per kg; Observation type: profile; Sampling instrument: niskin; Analyzing instrument: winkler; Detailed sampling and analyzing information: Samples were drawn from niskin bottles and analyzed immediately following SOP as outlined in Dickson et al (2007); Replicate information: 1 station where all niskins were closed at the same depth; 2 stations where two niskins were closed at each depth; Uncertainty: 0.3 micro-mol per kg; Quality flag convention: WOCE flags: 2=acceptable; 3=questionable; 4=bad; 6=mean of replicates;9=missing; Method reference: https://www.go-ship.org/HydroMan.html; Researcher name: Kristin Jackson-Misje; Researcher institution: University of Bergen. Parameter or Variable: salinity; Abbreviation: SALNTY; Unit: NA; Observation type: profile; Sampling instrument: niskin; Analyzing instrument: Guildline Portasal 8410A, serial no 68244; Detailed sampling and analyzing information: sampling and analysis following GO-SHIP protocols; Replicate information: none; Quality flag convention: WOCE flags: 2=acceptable; 3=questionable; 4=bad; 6=mean of replicates;9=missing; Method reference: https://www.go-ship.org/HydroMan.html; Researcher name: Kristin Jackson-Misje; Researcher institution: University of Bergen. Parameter or Variable: inorganic nitrate; Abbreviation: NITRAT; Unit: micro-mol per kg; Observation type: profile; Sampling instrument: niskin; Analyzing instrument: Skalar autoanalyser; Detailed sampling and analyzing information: Samples were taken in plastic containers, poisoned with chloroform and kept refridgerated until analysis after the cruise. Spectrophotometric analysis of absorption at 540nm after reduction to nitrite using cadmium in the presence of copper-ions. Nitrate is the difference between this nitrite measurement and that without cadmium (see below); Replicate information: none; Uncertainty: 0.5 micro-mol per liter; Quality flag convention: WOCE flags: 2=acceptable; 3=questionable; 4=bad; 6=mean of replicates;9=missing; Method reference: Bendschneider, K. and Robinson, R.I. (1952) A new Spectrophotometric method for the determination of nitrite in Seawater. J. Mar. Res. 2:87-96; Researcher name: Linda Fonnes Lunde; Researcher institution: Institute of Marine Research. Parameter or Variable: inorganic nitrite; Abbreviation: NITRIT; Unit: micro-mol per kg; Observation type: profile; Sampling instrument: niskin; Analyzing instrument: Skalar autoanalyser; Detailed sampling and analyzing information: Samples were taken in plastic containers, poisoned with chloroform and kept refridgerated until analysis after the cruise. Spectrophotometric analysis of absorption at 540nm; Replicate information: none; Uncertainty: 0.06 micro-mol per liter; Quality flag convention: WOCE flags: 2=acceptable; 3=questionable; 4=bad; 6=mean of replicates;9=missing; Method reference: Bendschneider, K. and Robinson, R.I. (1952) A new Spectrophotometric method for the determination of nitrite in Seawater. J. Mar. Res. 2:87-96; Researcher name: Linda Fonnes Lunde; Researcher institution: Institute of Marine Research. Parameter or Variable: inorganic phosphate; Abbreviation: PHSPHT; Unit: micro-mol per kg; Observation type: profile; Sampling instrument: niskin; Analyzing instrument: Skalar autoanalyser; Detailed sampling and analyzing information: Samples were taken in plastic containers, poisoned with chloroform and kept refridgerated until analysis after the cruise. Spectrophotometric analysis of absorption at 880nm; Replicate information: none; Uncertainty: 0.06 micro-mol per liter; Quality flag convention: WOCE flags: 2=acceptable; 3=questionable; 4=bad; 6=mean of replicates;9=missing; Method reference: Grasshoff, K. (1965) On the Automatic Determination of Phosphate, Silicate and Fluoride in Seawater. ICES Hydrographic Committee Report No. 129; Researcher name: Linda Fonnes Lunde; Researcher institution: Institute of Marine Research. Parameter or Variable: silicate; Abbreviation: SILCAT; Unit: micro-mol per kg; Observation type: profile; Sampling instrument: niskin; Analyzing instrument: Skalar autoanalyser; Detailed sampling and analyzing information: Samples were taken in plastic containers, poisoned with chloroform and kept refridgerated until analysis after the cruise. Spectrophotometric analysis of absorption at 810nm; Replicate information: none; Uncertainty: 0.7 micro-mol per liter; Quality flag convention: WOCE flags: 2=acceptable; 3=questionable; 4=bad; 6=mean of replicates;9=missing; Method reference: Grasshoff, K. (1965) On the Automatic Determination of Phosphate, Silicate and Fluoride in Seawater. ICES Hydrographic Committee Report No. 129; Researcher name: Linda Fonnes Lunde; Researcher institution: Institute of Marine Research. Parameter or Variable: CFC-12; Abbreviation: CFC12; Unit: pmol/kg; Observation type: profile; Sampling instrument: niskin; Analyzing instrument: purge and trap with gas chromatograph; Detailed sampling and analyzing information: Samples were drawn from niskin bottles and analyzed immediately; Uncertainty: 2% or 0.004 pmol kg-1; Quality flag convention: WOCE flags: 2=acceptable; 3=questionable; 4=bad; 6=mean of replicates;9=missing; Method reference: Bullister and Tanhua; Researcher name: Meike Becker; Researcher institution: University of Bergen. Parameter or Variable: SF6; Abbreviation: SF6; Unit: fmol/kg; Observation type: profile; Sampling instrument: niskin; Analyzing instrument: purge and trap with gas chromatograph; Detailed sampling and analyzing information: Samples were drawn from niskin bottles and analyzed immediately; Uncertainty: 3% or 0.03 fmol kg-1; Quality flag convention: WOCE flags: 2=acceptable; 3=questionable; 4=bad; 6=mean of replicates;9=missing; Method reference: Bullister and Tanhua; Researcher name: Meike Becker; Researcher institution: University of Bergen. Parameter or Variable: dissolved oxygen in seawater; Abbreviation: CTDOXY; Unit: micro-mol per kg; Observation type: profile; Sampling instrument: SeaBird SBE 43; Analyzing instrument: NA; Detailed sampling and analyzing information: NA; Replicate information: NA; Uncertainty: unknown, data have not been calibrated with bottle data nor quality controlled, however crossovers with GLODAPv2.2019 data indicate these data are biased low by ~6% (below 1900m); Quality flag convention: NA; Method reference: NA; Researcher name: NA; Researcher institution: NA. Parameter or Variable: salinity; Abbreviation: CTDSAL; Unit: NA; Observation type: profile; Sampling instrument: SeaBird CTD; Analyzing instrument: NA; Detailed sampling and analyzing information: NA; Replicate information: NA; Uncertainty: unknown, data have not been calibrated with bottle data; Quality flag convention: WOCE flags: 2=acceptable; 3=questionable; 4=bad; 6=mean of replicates;9=missing; Method reference: NA; Researcher name: NA; Researcher institution: NA .

Lineage information for: dataset

Processing Steps

Parameter or Variable: Dissolved Inorganic Carbon; Abbreviation: TCARBN; Unit: micro-mol per kg; Observation type: profile; Measured or calculated: measured; Calculation method and parameters: NA; Sampling instrument: niskin; Analyzing instrument: VINDTA 3D; Detailed sampling and analyzing information: Onboard samples were drawn from niskin bottles following SOP as outlined in Dickson et al (2007) and analyzed immediately (no poisoning). Samples taken for analysis on land were drawn from niskin bottles following SOP as outlined in Dickson et al (2007), poisoned with HgCl2 and stored in a dark cool environment. Samples were analyzed within 6 weeks of end of cruise.; Replicate information: 1 full test where all niskins were filled at same depth; one sample analyzed twice in a row on 50% of stations; Standardization description: CRM; Standardization frequency: CRM analyzed before and after each full profile; CRM manufacturer: Andrew Dickson; Preservation method: HgCl2; Preservative volume: one drop in 500mL volume; Preservative correction: none; Uncertainty: 1.5 micro-mol per kg; Quality flag convention: WOCE flags: 2=acceptable; 3=questionable; 4=bad; 6=mean of replicates;9=missing; Method reference: Dickson 2007; Researcher name: Siv K. Lauvset; Researcher institution: NORCE Norwegian Research Centre.
Parameter or Variable: Total alkalinity; Abbreviation: ALKALI; Unit: micro-mol per kg; Observation type: profile; Measured or calculated: measured; Calculation method and parameters: NA; Sampling instrument: niskin; Analyzing instrument: VINDTA 3S; Type of titration: double endpoint; Cell type (open or closed): open; Curve fitting method: non-linear curve fitting using results from a modified GRAN plot; Detailed sampling and analyzing information: Onboard samples were drawn from niskin bottles following SOP as outlined in Dickson et al (2007) and analyzed immediately (no poisoning). Samples taken for analysis on land were drawn from niskin bottles following SOP as outlined in Dickson et al. (2007), poisoned with HgCl2 and stored in a dark cool environment. Samples were analyzed within 6 weeks of end of cruise.; Replicate information: none; Standardization description: CRM; Standardization frequency: CRM analyzed before and after each full profile; CRM manufacturer: Andrew Dickson; Preservation method: HgCl2; Preservative volume: one drop in 500mL volume; Preservative correction: none; TA blank correction: NA; Uncertainty: 2.5 micro-mol per kg; Quality flag convention: WOCE flags: 2=acceptable; 3=questionable; 4=bad; 6=mean of replicates;9=missing; Method reference: Dickson et al. 2007; Researcher name: Siv K. Lauvset; Researcher institution: NORCE Norwegian Research Centre.
Parameter or Variable: pH; Abbreviation: PH_TOT; pH scale: total; Observation type: profile; Measured or calculated: measured; Calculation method and parameters: NA; Sampling instrument: niskin; Analyzing instrument: Jasco spectrophotometer; Temperature of pH measurement: 25C on stations 488-535 and 575-592, ~20C on stations 536-569. All pH data were recalculated to 25C and are presented at that temperature in the data file; Detailed sampling and analyzing information: Samples drawn from niskins into 250mL glass bottles following Dickson et al (2007). For leg 1 we used a water jacketed 10cm cell for temperature control, and automated pumping. Analysis following Carter et al (2013). For leg 2 we were unable to use the water jacketed cell so instead used a normal 10cm cell. Temperature was measured and recorded before and after analysis. Analysis following Carter et al (2013). Data corrected to 25C after analysis (using the measured AT); Replicate information: one duplicate run on each profile; Standardization description: TRIS and CRM; Standardization frequency: CRM run at least once for each full profile. Each CRM run 2-4 times for replication analysis. We brought 10 bottles of TRIS. These were analyzed at regular intervals throughout the cruise; pH standard values: TRIS: 8.0932; CRM: 7.883 (calculated from certified DIC and AT values using Merhbach K1/K2 constants refit by Dickson and Millero, Dickson for KSO4 constant, Lee et al for total boron, Dickson and Riley for KF constant); Temperature of standardization: 25C; Temperature correction method: CO2SYS with measured AT; At what temperature was pH reported: 25C; Quality flag convention: WOCE flags: 2=acceptable; 3=questionable; 4=bad; 6=mean of replicates;9=missing; Method reference: Carter et al 2013; Researcher name: Siv K. Lauvset; Researcher institution: NORCE Norwegian Research Centre.
Parameter or Variable: dissolved oxygen in seawater; Abbreviation: OXYGEN; Unit: micro-mol per kg; Observation type: profile; Sampling instrument: niskin; Analyzing instrument: winkler; Detailed sampling and analyzing information: Samples were drawn from niskin bottles and analyzed immediately following SOP as outlined in Dickson et al (2007); Replicate information: 1 station where all niskins were closed at the same depth; 2 stations where two niskins were closed at each depth; Uncertainty: 0.3 micro-mol per kg; Quality flag convention: WOCE flags: 2=acceptable; 3=questionable; 4=bad; 6=mean of replicates;9=missing; Method reference: https://www.go-ship.org/HydroMan.html; Researcher name: Kristin Jackson-Misje; Researcher institution: University of Bergen.
Parameter or Variable: salinity; Abbreviation: SALNTY; Unit: NA; Observation type: profile; Sampling instrument: niskin; Analyzing instrument: Guildline Portasal 8410A, serial no 68244; Detailed sampling and analyzing information: sampling and analysis following GO-SHIP protocols; Replicate information: none; Quality flag convention: WOCE flags: 2=acceptable; 3=questionable; 4=bad; 6=mean of replicates;9=missing; Method reference: https://www.go-ship.org/HydroMan.html; Researcher name: Kristin Jackson-Misje; Researcher institution: University of Bergen.
Parameter or Variable: inorganic nitrate; Abbreviation: NITRAT; Unit: micro-mol per kg; Observation type: profile; Sampling instrument: niskin; Analyzing instrument: Skalar autoanalyser; Detailed sampling and analyzing information: Samples were taken in plastic containers, poisoned with chloroform and kept refridgerated until analysis after the cruise. Spectrophotometric analysis of absorption at 540nm after reduction to nitrite using cadmium in the presence of copper-ions. Nitrate is the difference between this nitrite measurement and that without cadmium (see below); Replicate information: none; Uncertainty: 0.5 micro-mol per liter; Quality flag convention: WOCE flags: 2=acceptable; 3=questionable; 4=bad; 6=mean of replicates;9=missing; Method reference: Bendschneider, K. and Robinson, R.I. (1952) A new Spectrophotometric method for the determination of nitrite in Seawater. J. Mar. Res. 2:87-96; Researcher name: Linda Fonnes Lunde; Researcher institution: Institute of Marine Research.
Parameter or Variable: inorganic nitrite; Abbreviation: NITRIT; Unit: micro-mol per kg; Observation type: profile; Sampling instrument: niskin; Analyzing instrument: Skalar autoanalyser; Detailed sampling and analyzing information: Samples were taken in plastic containers, poisoned with chloroform and kept refridgerated until analysis after the cruise. Spectrophotometric analysis of absorption at 540nm; Replicate information: none; Uncertainty: 0.06 micro-mol per liter; Quality flag convention: WOCE flags: 2=acceptable; 3=questionable; 4=bad; 6=mean of replicates;9=missing; Method reference: Bendschneider, K. and Robinson, R.I. (1952) A new Spectrophotometric method for the determination of nitrite in Seawater. J. Mar. Res. 2:87-96; Researcher name: Linda Fonnes Lunde; Researcher institution: Institute of Marine Research.
Parameter or Variable: inorganic phosphate; Abbreviation: PHSPHT; Unit: micro-mol per kg; Observation type: profile; Sampling instrument: niskin; Analyzing instrument: Skalar autoanalyser; Detailed sampling and analyzing information: Samples were taken in plastic containers, poisoned with chloroform and kept refridgerated until analysis after the cruise. Spectrophotometric analysis of absorption at 880nm; Replicate information: none; Uncertainty: 0.06 micro-mol per liter; Quality flag convention: WOCE flags: 2=acceptable; 3=questionable; 4=bad; 6=mean of replicates;9=missing; Method reference: Grasshoff, K. (1965) On the Automatic Determination of Phosphate, Silicate and Fluoride in Seawater. ICES Hydrographic Committee Report No. 129; Researcher name: Linda Fonnes Lunde; Researcher institution: Institute of Marine Research.
Parameter or Variable: silicate; Abbreviation: SILCAT; Unit: micro-mol per kg; Observation type: profile; Sampling instrument: niskin; Analyzing instrument: Skalar autoanalyser; Detailed sampling and analyzing information: Samples were taken in plastic containers, poisoned with chloroform and kept refridgerated until analysis after the cruise. Spectrophotometric analysis of absorption at 810nm; Replicate information: none; Uncertainty: 0.7 micro-mol per liter; Quality flag convention: WOCE flags: 2=acceptable; 3=questionable; 4=bad; 6=mean of replicates;9=missing; Method reference: Grasshoff, K. (1965) On the Automatic Determination of Phosphate, Silicate and Fluoride in Seawater. ICES Hydrographic Committee Report No. 129; Researcher name: Linda Fonnes Lunde; Researcher institution: Institute of Marine Research.
Parameter or Variable: CFC-12; Abbreviation: CFC12; Unit: pmol/kg; Observation type: profile; Sampling instrument: niskin; Analyzing instrument: purge and trap with gas chromatograph; Detailed sampling and analyzing information: Samples were drawn from niskin bottles and analyzed immediately; Uncertainty: 2% or 0.004 pmol kg-1; Quality flag convention: WOCE flags: 2=acceptable; 3=questionable; 4=bad; 6=mean of replicates;9=missing; Method reference: Bullister and Tanhua; Researcher name: Meike Becker; Researcher institution: University of Bergen.
Parameter or Variable: SF6; Abbreviation: SF6; Unit: fmol/kg; Observation type: profile; Sampling instrument: niskin; Analyzing instrument: purge and trap with gas chromatograph; Detailed sampling and analyzing information: Samples were drawn from niskin bottles and analyzed immediately; Uncertainty: 3% or 0.03 fmol kg-1; Quality flag convention: WOCE flags: 2=acceptable; 3=questionable; 4=bad; 6=mean of replicates;9=missing; Method reference: Bullister and Tanhua; Researcher name: Meike Becker; Researcher institution: University of Bergen.
Parameter or Variable: dissolved oxygen in seawater; Abbreviation: CTDOXY; Unit: micro-mol per kg; Observation type: profile; Sampling instrument: SeaBird SBE 43; Analyzing instrument: NA; Detailed sampling and analyzing information: NA; Replicate information: NA; Uncertainty: unknown, data have not been calibrated with bottle data nor quality controlled, however crossovers with GLODAPv2.2019 data indicate these data are biased low by ~6% (below 1900m); Quality flag convention: NA; Method reference: NA; Researcher name: NA; Researcher institution: NA.
Parameter or Variable: salinity; Abbreviation: CTDSAL; Unit: NA; Observation type: profile; Sampling instrument: SeaBird CTD; Analyzing instrument: NA; Detailed sampling and analyzing information: NA; Replicate information: NA; Uncertainty: unknown, data have not been calibrated with bottle data; Quality flag convention: WOCE flags: 2=acceptable; 3=questionable; 4=bad; 6=mean of replicates;9=missing; Method reference: NA; Researcher name: NA; Researcher institution: NA .

Acquisition Information (collection)
Instrument	carbon dioxide (CO2) gas analyzer CTD Niskin bottle nutrient autoanalyzer oxygen sensor pH sensor temperature sensor titrator
Platform	JOHAN HJORT

Last Modified: 2025-01-24T17:41:50Z
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