Surface underway measurements of partial pressure of CO2 (pCO2) and other parameters aboard the CCGS Amundsen during the Canadian Arctic Archipelago cruise (EXPOCODE 18DL20130726) from 2013-07-26 to 2013-09-13 (NCEI Accession 0177851)

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This NCEI Accession includes surface underway, chemical, meteorological and physical data collected aboard the CCGS Amundsen during the Canadian Arctic Archipelago cruise (EXPOCODE 18DL20130726) from 2013-07-26 to 2013-09-13. These data include partial pressure of carbon dioxide (pCO2), barometric pressure, sea surface salinity and sea surface temperature. The instruments used to collect these data include CO2 gas analyzer and shower head chamber equilibrator for autonomous CO2 measurement.
  • Cite as: Ahmed, Mohamed; Else, Brent; Burgers, Tonya M.; Papakyriakou, Tim (2018). Surface underway measurements of partial pressure of CO2 (pCO2) and other parameters aboard the CCGS Amundsen during the Canadian Arctic Archipelago cruise (EXPOCODE 18DL20130726) from 2013-07-26 to 2013-09-13 (NCEI Accession 0177851). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/6y32-wg91. Accessed [date].
gov.noaa.nodc:0177851
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Distributor DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
301-713-3277
NCEI.Info@noaa.gov
Dataset Point of Contact Information Services
DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
301-713-3277
NCEI.Info@noaa.gov
Time Period 2013-07-26 to 2013-09-13
Spatial Bounding Box Coordinates
N: 75.1
S: 72.6
E: -74.3
W: -117.8
Spatial Coverage Map
General Documentation
Associated Resources
  • Ahmed, M., Else, B. G. T., Burgers, T. M., Papakyriakou, T. Variability of Surface Water pCO2 in the Canadian Arctic Archipelago from 2010 to 2016. Journal of Geophysical Research: Oceans. https://doi.org/10.1029/2018JC014639
Publication Dates
  • publication: 2018-11-06
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 The major objectives of this cruise is to provide a high quality measurements of atmospheric and sea surface pCO2, sea surface salinity, temperature, and other parameters in the Canadian Arctic Arcipelago.
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: Ahmed, Mohamed; Else, Brent; Burgers, Tonya M.; Papakyriakou, Tim (2018). Surface underway measurements of partial pressure of CO2 (pCO2) and other parameters aboard the CCGS Amundsen during the Canadian Arctic Archipelago cruise (EXPOCODE 18DL20130726) from 2013-07-26 to 2013-09-13 (NCEI Accession 0177851). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/6y32-wg91. Accessed [date].
Cited Authors
  • Ahmed, Mohamed
  • Else, Brent
  • Burgers, Tonya M.
  • Papakyriakou, Tim
Principal Investigators
Contributors
Resource Providers
Publishers
Theme keywords NODC DATA TYPES THESAURUS NODC OBSERVATION TYPES THESAURUS WMO_CategoryCode
  • oceanography
Cruise ID
  • Canadian Arctic Arcipelago
EXPOCODE
  • 18DL20130726
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
Provider Variable Names
  • PRES_ATM@SSP_hPa
  • SAL_permil
  • SST_C
  • pCO2_SW_Uatm; fCO2_SW_uatm; xCO2_EQU_ppm
Data Center keywords Global Change Master Directory (GCMD) Data Center Keywords
  • DOC/NOAA/NESDIS/NODC > National Oceanographic Data Center, NESDIS, NOAA, U.S. Department of Commerce
  • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
NODC COLLECTING INSTITUTION NAMES THESAURUS NODC SUBMITTING INSTITUTION NAMES THESAURUS
Platform keywords NODC PLATFORM NAMES THESAURUS Global Change Master Directory (GCMD) Platform Keywords
  • SHIPS
SeaDataNet Ship and Platform Codes
Instrument keywords NODC INSTRUMENT TYPES THESAURUS Global Change Master Directory (GCMD) Instrument Keywords
  • CO2 ANALYZERS
Place keywords NODC SEA AREA NAMES THESAURUS Global Change Master Directory (GCMD) Location Keywords
  • OCEAN > ARCTIC OCEAN
  • OCEAN > ARCTIC OCEAN > BEAUFORT SEA
Provider Geographic Names
  • Baffin Bay, Northwestern Passages
Project keywords NODC PROJECT NAMES THESAURUS Ocean Acidification Search Keywords
  • Ocean Carbon Data System (OCADS) Project
Keywords NCEI ACCESSION NUMBER
Use Constraints
  • Cite as: Ahmed, Mohamed; Else, Brent; Burgers, Tonya M.; Papakyriakou, Tim (2018). Surface underway measurements of partial pressure of CO2 (pCO2) and other parameters aboard the CCGS Amundsen during the Canadian Arctic Archipelago cruise (EXPOCODE 18DL20130726) from 2013-07-26 to 2013-09-13 (NCEI Accession 0177851). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/6y32-wg91. 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
  • 2018-11-06T00:52:24Z - NCEI Accession 0177851 v1.1 was published.
Output Datasets
Lineage information for: dataset
Processing Steps
  • Parameter or Variable: pCO2 (fCO2) autonomous; Abbreviation: pCO2_SW_Uatm; fCO2_SW_uatm; xCO2_EQU_ppm; Unit: uatm, ppm; Observation type: Surface underway; Measured or calculated: Measured; Sampling instrument: Seawater pump; Location of seawater intake: engine room of CCGS Amundsen; Analyzing instrument: Infrared Analyzer: LI-COR model 7000; Detailed sampling and analyzing information: This automated underway system operates by directing the seawater flow from a high-volume inlet (located approximately at 7 m beneath the water surface) through a shower-type equilibrator system. The gas in the headspace of the equilibrator is cycled in a closed loop through a LI-COR LI-7000 CO2/H2O gas analyzer at a rate of 80-100 ml min-1 to measure CO2 and H2O mole fraction. See Pierrot, D., C. Neil, K. Sullivan, R. Castle, R. Wanninkhof, H. Lueger, T. Johannessen, A. Olsen, R. A. Feely, and C. E. Cosca (2009), Recommendations for autonomous underway pCO2 measuring systems and data reduction routines, Deep-Sea Res II, 56, 512-522 ; Equilibrator type: shower-type equilibrator; Is the equilibrator vented or not: Vented; Water flow rate: 2.4-2.8 L/min; Gas flow rate: ~100 ml/min; How was temperature inside the equilibrator measured: Temperature inside the equilibarator measured with a very accurate (±0.01 °C) and stable Hart digital thermometer with a thermistor probe. However, we applied a temperature correction to account for warming from the seawater intake line to the GO 8050 equilibrator. The temperature correction was done with a regression analysis between the equilibrator water temperature and it's coincident seawater measurements made bt the shup's CTD-rosette. The computed SST values from this linear relationship are the temperatures at which our pCO2 values are reported. Details about this regression, and the statistics of it are included in the second tab of this spreadsheet.; How was pressure inside the equilibrator measured: pressure of gas analyzer (TE connectivity), 13A-015A pressure sensor; sensor was logged to save measurements every minute; accuracy of 0.1% for pressure sensor.; Drying method for gas: The heaspace gas from the equilibrator goes through a condensor, then Naphion drying tubes, then to the CO2 analyzer; SEA CO2 gas detector manufacturer: Licor, Inc; SEA CO2 gas detector model: Licor 7000; SEA CO2 gas detector resolution: The accuracy of the instrument is nominal ±1% (see Pierrot et al. 2009); SEA CO2 gas detector uncertainty: The precision of the measurements is ± 1 ppm (see Pierrot et al. 2009); Standardization technique: The system runs a full cycle in approximately 7 hours. The cycle starts with 4 standard gases, then measures three rounds of 6 atmopherice samples followed by 50 surface water samples. Each new gas is flushed through the Licor Analyzer for 2 minutes prior to a stop-flow measurement.; Standardization frequency: Every 7 hours; Standard gas manufacturer: zero CO2 gas (ultra-pure N2 gas from Praxair), and two span gases (373.07 ppm and 600.02 ppm from Praxair); Standard gas uncertainty: 0.01 ppm; Water vapor correction method: Details of the data reduction are described in Pierrot, et.al. (2009).; Temperature correction method: Details of the data reduction are described in Pierrot, et.al. (2009).; At what temperature was pCO2 reported: In situ sea surface temperature; Uncertainty: accuracy better than 0.05 deg C for temp. sensor of gas analyzer; Method reference: Pierrot, D., C. Neil, K. Sullivan, R. Castle, R. Wanninkhof, H. Lueger, T. Johannessen, A. Olsen, R. A. Feely, and C. E. Cosca (2009), Recommendations for autonomous underway pCO2 measuring systems and data reduction routines, Deep-Sea Res II, 56, 512-522; Researcher name: Mohamed Ahmed; Researcher institution: University of Calgary.
  • Parameter or Variable: Sea Surface Temperature; Abbreviation: SST_C; Unit: degrees celcius; Observation type: Surface Underway; Sampling instrument: temperature (Idronaut); Analyzing instrument: Idronaut Ocean Seven model 315; Detailed sampling and analyzing information: sensor was logged to save measurements every minute; Uncertainty: accuracy of 0.002 deg C for water temperature; Researcher name: Mohamed Ahmed; Researcher institution: University of Calgary.
  • Parameter or Variable: Sea Surface Salinity; Abbreviation: SAL_permil; Observation type: Surface Underway; Sampling instrument: salinity (Idronaut); Analyzing instrument: Idronaut Ocean Seven model 315; Detailed sampling and analyzing information: sensor was logged to save measureements every minute; Uncertainty: accuracy of 0.003 mS/cm in conductivity measurement; Researcher name: Mohamed Ahmed; Researcher institution: University of Calgary.
  • Parameter or Variable: Atmospheric Pressure; Abbreviation: PRES_ATM@SSP_hPa; Unit: hPa; Observation type: athmospheric; Sampling instrument: pressure of equilibrator (Setra); Analyzing instrument: 239 setra pressure transducer; Detailed sampling and analyzing information: sensor was logged to save measurements every minute; Uncertainty: accuracy of 0.027 hPa for the Setra pressure transducer ; Researcher name: Mohamed Ahmed; Researcher institution: University of Calgary.
Acquisition Information (collection)
Instrument
  • Carbon dioxide (CO2) gas analyzer
  • Shower head chamber equilibrator for autonomous carbon dioxide (CO2) measurement
Platform
  • CCGS Amundsen
Last Modified: 2019-06-23T16:37:53Z
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