Dataset Overview | National Centers for Environmental Information (NCEI)

Surface underway measurements of partial pressure of CO2 (pCO2), salinity and water temperature obtained during the CCGS Amundsen 2016 Green Edge cruise AN1601 (ArcticNet Leg 1, EXPOCODE 18DL20160603) in Baffin Bay from 2016-06-03 to 2016-07-10 (NCEI Accession 0229120)

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This dataset includes surface underway, chemical, meteorological and physical data collected during the CCGS Amundsen 2016 Green Edge cruise AN1601 (ArcticNet Leg 1, EXPOCODE 18DL20160603) in Baffin Bay from 2016-06-03 to 2016-07-10. These data include partial pressure of CO2 (pCO2), fugacity of CO2 (fCO2), mol fraction of CO2 (xCO2), sea surface salinity and sea surface temperature.

Dataset Citation

Cite as: Papakyriakou, Tim; Else, Brent; Burgers, Tonya M. (2021). Surface underway measurements of partial pressure of CO2 (pCO2), salinity and water temperature obtained during the CCGS Amundsen 2016 Green Edge cruise AN1601 (ArcticNet Leg 1, EXPOCODE 18DL20160603) in Baffin Bay from 2016-06-03 to 2016-07-10 (NCEI Accession 0229120). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/zhar-h915. Accessed [date].

Dataset Identifiers

ISO 19115-2 Metadata

gov.noaa.nodc:0229120

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Download Data	HTTPS (download) Navigate directly to the URL for data access and direct download. FTP (download) These data are available through the File Transfer Protocol (FTP). FTP is no longer supported by most internet browsers. You may copy and paste the FTP link to the data into an FTP client (e.g., FileZilla or WinSCP).
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	2016-06-03 to 2016-07-10
Spatial Bounding Box Coordinates	West: -65.3 East: -52.7 South: 49.7 North: 70.6
Spatial Coverage Map

General Documentation

Project Metadata
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Descriptive Information
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Associated Resources

Canadian Arctic Archipelago Cruises
- https://www.ncei.noaa.gov/access/ocean-carbon-acidification-data-system/oceans/VOS_Program/canarch.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: 2021-04-13
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: Papakyriakou, Tim; Else, Brent; Burgers, Tonya M. (2021). Surface underway measurements of partial pressure of CO2 (pCO2), salinity and water temperature obtained during the CCGS Amundsen 2016 Green Edge cruise AN1601 (ArcticNet Leg 1, EXPOCODE 18DL20160603) in Baffin Bay from 2016-06-03 to 2016-07-10 (NCEI Accession 0229120). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/zhar-h915. Accessed [date].
Cited Authors	Papakyriakou, Tim University of Manitoba; Center for Earth Observation Science; Department of Environment and Geography Else, Brent Burgers, Tonya M.
Principal Investigators	Tim Papakyriakou University of Manitoba; Center for Earth Observation Science; Department of Environment and Geography Brent Else University of Calgary Tonya M. Burgers University of Manitoba; Center for Earth Observation Science; Department of Environment and Geography
Contributors	University of Calgary University of Manitoba; Center for Earth Observation Science; Department of Environment and Geography
Resource Providers	Tonya M. Burgers University of Manitoba; Center for Earth Observation Science; Department of Environment and Geography University of Manitoba; Center for Earth Observation Science; Department of Environment and Geography
Publishers	NOAA National Centers for Environmental Information
Acknowledgments	Funding Information: ArcticNet

Theme keywords	NODC DATA TYPES THESAURUS BAROMETRIC PRESSURE partial pressure of carbon dioxide - water SALINITY - SURFACE WATER SEA SURFACE TEMPERATURE NODC OBSERVATION TYPES THESAURUS chemical meteorological physical surface underway WMO_CategoryCode oceanography Global Change Master Directory (GCMD) Science Keywords EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC PRESSURE EARTH SCIENCE > CLIMATE INDICATORS > ATMOSPHERIC/OCEAN INDICATORS > SURFACE SALINITY EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > CARBON DIOXIDE EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > SEA SURFACE TEMPERATURE EARTH SCIENCE > OCEANS > SALINITY/DENSITY > SALINITY OCADS Study Type Surface underway Provider Variable Abbreviations PRES_EQU PRES_LICOR SSS SST TEMP_EQU TEMP_LICOR pCO2_SW xCO2_EQU xH2O_EQU
Data Center keywords	NODC COLLECTING INSTITUTION NAMES THESAURUS University of Calgary University of Manitoba; Center for Earth Observation Science; Department of Environment and Geography NODC SUBMITTING INSTITUTION NAMES THESAURUS University of Manitoba; Center for Earth Observation Science; Department of Environment and Geography
Platform keywords	NODC PLATFORM NAMES THESAURUS CCGS Amundsen Global Change Master Directory (GCMD) Platform Keywords Ships ICES/SeaDataNet Ship Codes Amundsen (call sign: CGDT, ICES code: 18DL, 2003)
Instrument keywords	NODC INSTRUMENT TYPES THESAURUS barometric pressure sensor carbon dioxide (CO2) gas analyzer salinometer showerhead equilibrator temperature sensor Global Change Master Directory (GCMD) Instrument Keywords BAROMETERS > BAROMETERS CO2 ANALYZERS > CO2 ANALYZERS EQUILIBRATORS SALINOMETERS TEMPERATURE SENSORS > TEMPERATURE SENSORS
Place keywords	NODC SEA AREA NAMES THESAURUS Baffin Bay North Atlantic Ocean Global Change Master Directory (GCMD) Location Keywords OCEAN > ARCTIC OCEAN OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN Provider Geographic Names Baffin Bay St.Lawrence Estuary
Project keywords	NODC PROJECT NAMES THESAURUS Ship of Opportunity Programme (SOOP) Surface Ocean CO2 Atlas (SOCAT) Cruise ID AN1601 EXPOCODE 18DL20160603 Ocean Acidification Search Keywords Ocean Carbon and Acidification Data System (OCADS) Project Research Projects Green Edge
Keywords	NCEI ACCESSION NUMBER 0229120

Use Constraints	Cite as: Papakyriakou, Tim; Else, Brent; Burgers, Tonya M. (2021). Surface underway measurements of partial pressure of CO2 (pCO2), salinity and water temperature obtained during the CCGS Amundsen 2016 Green Edge cruise AN1601 (ArcticNet Leg 1, EXPOCODE 18DL20160603) in Baffin Bay from 2016-06-03 to 2016-07-10 (NCEI Accession 0229120). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/zhar-h915. 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	2021-04-13T21:17:09Z - NCEI Accession 0229120 v1.1 was published.
Output Datasets	NCEI Accession 0229120 v1.1 NCEI Accession 0229120 v1.1 (download) published 2021-04-13T21:17:09Z

Lineage information for: dataset
Processing Steps	Parameter or Variable: pCO2 (fCO2) autonomous; Abbreviation: pCO2_SW; Unit: micro-atmosphere; Observation type: surface underway; Measured or calculated: measured; Sampling instrument: GO 8050 underway pCO2 system; Location of seawater intake: engine room of CCGS Amundsen; Analyzing instrument: GO 8050 underway system; Detailed sampling and analyzing information: See Pierrot et al. [2009] for more details on GO 8050 underway system. pCO2 is calculated from the CO2 molar fraction, the equilibrator pressure, and the water vapour pressure (estimated from surface water salinity and temperature using Weiss and Price [1980]) following Dickson et al. [2007]. Then a temperature correction was applied to account for warming of seawater from the seawater intake to the GO8050 equilibrator. A temperature sensor was installed directly at the seawater intake to measure in-situ SST directly, and we used these values to temperature-correct our pCO2 values using the formula from Takahashi et al. (1993); Equilibrator type: shower-type equilibrator; Is the equilibrator vented or not: vented; Water flow rate: 2 L/min or slightly greater (2-2.4); Gas flow rate: ~100 ml/min; How was temperature inside the equilibrator measured: Hart thermometer; How was pressure inside the equilibrator measured: Setra pressure transducer, differential measurement; Drying method for gas: heaspace gas from the equilibrator goes through a condensor, then Naphion drying tubes, then to the CO2 analyzer; SEA CO2 gas detector manufacturer: LICOR; SEA CO2 gas detector model: LI-7000; Standardization technique: The LI-7000 is calibrated with a zero CO2 gas (ultra-pure N2 gas from Praxair), and three span gases (254.5, 431.3, and 554.2 ppm from Praxair), twice daily. These are secondary standards, which are calibrated using primary standards from NOAA.; Standardization frequency: twice daily; Standard gas manufacturer: Praxair; Standard gas concentration: 0 ppm, 254.5 ppm, 431.3 ppm, 554.2 ppm; Standard gas uncertainty: since the concentrations of standard gases are measured using the LI-7000 after a calibration with NOAA standards, the uncertainty of the standard gas CO2 concentrations should be +/- 1 ppm; Water vapor correction method: Weiss and Price [1980]; Temperature correction method: Takahashi et al. [1993]; At what temperature was pCO2 reported: pCO2 is reported at SST temperatures (measured by a temperature sensor located directly at the seawater intake); Uncertainty: Uncertainty of +/- 2 ppm (Pierrot et al., 2009); Method reference: Pierrot, D., Neill, C., Sullivan, K., Castle, R., Wanninkhof, R., Lüger, H., Johannessen, T., Olsen, A., Feely, R. A., & Cosca, C. E. (2009). Recommendations for autonomous underway pCO2 measuring systems and data-reduction routines. Deep Sea Research Part II: Topical Studies in Oceanography, 56(8-10), 512-522. https://doi.org/10.1016/j.dsr2.2008.12.005; Researcher name: Tonya Burgers; Researcher institution: University of Manitoba. Parameter or Variable: CO2 molar fraction; Abbreviation: xCO2_EQU; Unit: micromol per mol (or ppm); Observation type: surface underway; Sampling instrument: GO 8050 underway pCO2 system; Analyzing instrument: LI-7000 gas analyzer; Detailed sampling and analyzing information: dried air from wet box equilibrator is read by the LI-7000 every ~2 min, the LI-7000 is calibrated twice daily; Uncertainty: the precision of the measurements is +/- 1 ppm, and the accuracy of the instrument is nominal +/-1%. Parameter or Variable: H2O molar fraction; Abbreviation: xH2O_EQU; Unit: millimol per mol (or ppt); Observation type: surface underway; Sampling instrument: GO 8050 underway pCO2 system; Analyzing instrument: LI-7000; Uncertainty: The precision of the measurements is 0.05 ppt, and the accuracy of the instrument is 1%. Parameter or Variable: temperature of gas analyzer; Abbreviation: TEMP_LICOR; Unit: degrees celcius; Observation type: surface underway; Sampling instrument: GO 8050 underway pCO2 system; Analyzing instrument: temperature sensor inside the LI-7000 is the Betatherm model 100K6MBD1; Uncertainty: accuracy better than 0.05 deg C. Parameter or Variable: pressure of gas analyzer; Abbreviation: PRES_LICOR; Unit: hPa; Observation type: surface underway; Sampling instrument: GO 8050 underway pCO2 system; Analyzing instrument: pressure sensor inside LI-7000 is the 13A-015A pressure sensor.; Uncertainty: accuracy of 0.1%. Parameter or Variable: pressure inside equilibrator; Abbreviation: PRES_EQU; Unit: hPa; Observation type: surface underway; Sampling instrument: GO 8050 underway pCO2 system; Analyzing instrument: Setra pressure transducer, differential measurement; Uncertainty: accuracy of +/- 0.027 hPa; Method reference: calculated PRES_EQU by adding differential pressure measurement from Setra pressure transducer to PRES_LICOR (ambient pressure). Parameter or Variable: temperature of water inside equilibrator; Abbreviation: TEMP_EQU; Unit: degrees celcius; Observation type: surface underway; Sampling instrument: GO 8050 underway pCO2 system; Analyzing instrument: Hart thermometer; Uncertainty: accuracy of +/- 0.025 deg C. Parameter or Variable: sea surface temperature; Abbreviation: SST; Unit: degrees celcius; Observation type: surface underway; Analyzing instrument: Omega type T thermocouple; Uncertainty: 0.5 deg C standard limit of error, for more information (ANSI code T): https://www.omega.ca/techref/colorcodes.html. Parameter or Variable: sea surface salinity; Abbreviation: SSS; Unit: practical salinity units; Observation type: surface underway; Sampling instrument: GO 8050 underway pCO2 system; Analyzing instrument: Idronaut Ocean Seven model 315; Uncertainty: accuracy of 0.003 mS/cm in conductivity measurement .

Lineage information for: dataset

Processing Steps

Parameter or Variable: pCO2 (fCO2) autonomous; Abbreviation: pCO2_SW; Unit: micro-atmosphere; Observation type: surface underway; Measured or calculated: measured; Sampling instrument: GO 8050 underway pCO2 system; Location of seawater intake: engine room of CCGS Amundsen; Analyzing instrument: GO 8050 underway system; Detailed sampling and analyzing information: See Pierrot et al. [2009] for more details on GO 8050 underway system. pCO2 is calculated from the CO2 molar fraction, the equilibrator pressure, and the water vapour pressure (estimated from surface water salinity and temperature using Weiss and Price [1980]) following Dickson et al. [2007]. Then a temperature correction was applied to account for warming of seawater from the seawater intake to the GO8050 equilibrator. A temperature sensor was installed directly at the seawater intake to measure in-situ SST directly, and we used these values to temperature-correct our pCO2 values using the formula from Takahashi et al. (1993); Equilibrator type: shower-type equilibrator; Is the equilibrator vented or not: vented; Water flow rate: 2 L/min or slightly greater (2-2.4); Gas flow rate: ~100 ml/min; How was temperature inside the equilibrator measured: Hart thermometer; How was pressure inside the equilibrator measured: Setra pressure transducer, differential measurement; Drying method for gas: heaspace gas from the equilibrator goes through a condensor, then Naphion drying tubes, then to the CO2 analyzer; SEA CO2 gas detector manufacturer: LICOR; SEA CO2 gas detector model: LI-7000; Standardization technique: The LI-7000 is calibrated with a zero CO2 gas (ultra-pure N2 gas from Praxair), and three span gases (254.5, 431.3, and 554.2 ppm from Praxair), twice daily. These are secondary standards, which are calibrated using primary standards from NOAA.; Standardization frequency: twice daily; Standard gas manufacturer: Praxair; Standard gas concentration: 0 ppm, 254.5 ppm, 431.3 ppm, 554.2 ppm; Standard gas uncertainty: since the concentrations of standard gases are measured using the LI-7000 after a calibration with NOAA standards, the uncertainty of the standard gas CO2 concentrations should be +/- 1 ppm; Water vapor correction method: Weiss and Price [1980]; Temperature correction method: Takahashi et al. [1993]; At what temperature was pCO2 reported: pCO2 is reported at SST temperatures (measured by a temperature sensor located directly at the seawater intake); Uncertainty: Uncertainty of +/- 2 ppm (Pierrot et al., 2009); Method reference: Pierrot, D., Neill, C., Sullivan, K., Castle, R., Wanninkhof, R., Lüger, H., Johannessen, T., Olsen, A., Feely, R. A., & Cosca, C. E. (2009). Recommendations for autonomous underway pCO2 measuring systems and data-reduction routines. Deep Sea Research Part II: Topical Studies in Oceanography, 56(8-10), 512-522. https://doi.org/10.1016/j.dsr2.2008.12.005; Researcher name: Tonya Burgers; Researcher institution: University of Manitoba.
Parameter or Variable: CO2 molar fraction; Abbreviation: xCO2_EQU; Unit: micromol per mol (or ppm); Observation type: surface underway; Sampling instrument: GO 8050 underway pCO2 system; Analyzing instrument: LI-7000 gas analyzer; Detailed sampling and analyzing information: dried air from wet box equilibrator is read by the LI-7000 every ~2 min, the LI-7000 is calibrated twice daily; Uncertainty: the precision of the measurements is +/- 1 ppm, and the accuracy of the instrument is nominal +/-1%.
Parameter or Variable: H2O molar fraction; Abbreviation: xH2O_EQU; Unit: millimol per mol (or ppt); Observation type: surface underway; Sampling instrument: GO 8050 underway pCO2 system; Analyzing instrument: LI-7000; Uncertainty: The precision of the measurements is 0.05 ppt, and the accuracy of the instrument is 1%.
Parameter or Variable: temperature of gas analyzer; Abbreviation: TEMP_LICOR; Unit: degrees celcius; Observation type: surface underway; Sampling instrument: GO 8050 underway pCO2 system; Analyzing instrument: temperature sensor inside the LI-7000 is the Betatherm model 100K6MBD1; Uncertainty: accuracy better than 0.05 deg C.
Parameter or Variable: pressure of gas analyzer; Abbreviation: PRES_LICOR; Unit: hPa; Observation type: surface underway; Sampling instrument: GO 8050 underway pCO2 system; Analyzing instrument: pressure sensor inside LI-7000 is the 13A-015A pressure sensor.; Uncertainty: accuracy of 0.1%.
Parameter or Variable: pressure inside equilibrator; Abbreviation: PRES_EQU; Unit: hPa; Observation type: surface underway; Sampling instrument: GO 8050 underway pCO2 system; Analyzing instrument: Setra pressure transducer, differential measurement; Uncertainty: accuracy of +/- 0.027 hPa; Method reference: calculated PRES_EQU by adding differential pressure measurement from Setra pressure transducer to PRES_LICOR (ambient pressure).
Parameter or Variable: temperature of water inside equilibrator; Abbreviation: TEMP_EQU; Unit: degrees celcius; Observation type: surface underway; Sampling instrument: GO 8050 underway pCO2 system; Analyzing instrument: Hart thermometer; Uncertainty: accuracy of +/- 0.025 deg C.
Parameter or Variable: sea surface temperature; Abbreviation: SST; Unit: degrees celcius; Observation type: surface underway; Analyzing instrument: Omega type T thermocouple; Uncertainty: 0.5 deg C standard limit of error, for more information (ANSI code T): https://www.omega.ca/techref/colorcodes.html.
Parameter or Variable: sea surface salinity; Abbreviation: SSS; Unit: practical salinity units; Observation type: surface underway; Sampling instrument: GO 8050 underway pCO2 system; Analyzing instrument: Idronaut Ocean Seven model 315; Uncertainty: accuracy of 0.003 mS/cm in conductivity measurement .

Acquisition Information (collection)
Instrument	barometric pressure sensor carbon dioxide (CO2) gas analyzer salinometer showerhead equilibrator temperature sensor
Platform	CCGS Amundsen

Last Modified: 2024-04-10T12:31:37Z
For questions about the information on this page, please email: ncei.info@noaa.gov

Surface underway measurements of partial pressure of CO2 (pCO2), salinity and water temperature obtained during the CCGS Amundsen 2016 Green Edge cruise AN1601 (ArcticNet Leg 1, EXPOCODE 18DL20160603) in Baffin Bay from 2016-06-03 to 2016-07-10 (NCEI Accession 0229120)

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