Partial pressure (or fugacity) of carbon dioxide, temperature, salinity and other variables collected from surface underway observations using carbon dioxide gas analyzer, shower head equilibrator and other instruments from R/V Wecoma in the U.S. West Coast California Current System during the 2011 West Coast Ocean Acidification Cruise (WCOA2011) from 2011-08-12 to 2011-08-30 (NODC Accession 0123607)

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This archival package contains the surface underway pCO2 data of the first dedicated West Coast Ocean Acidification cruise (WCOA2011). The cruise took place August 12-30, 2011 aboard the R/V Wecoma. Ninety-five stations were occupied from northern Washington to southern California along thirteen transect lines. At all stations, CTD casts were conducted, and discrete water samples were collected in Niskin bottles. Underway measurements of pCO2 were collected during the duration of the cruise. The cruise was designed to obtain a synoptic snapshot of key carbon, physical, and biogeochemical parameters as they relate to ocean acidification (OA) in the coastal realm. During the cruise, some of the same transect lines were occupied as during the 2007 West Coast Carbon cruise, as well as many CalCOFI stations. This effort was conducted in support of the coastal monitoring and research objectives of the NOAA Ocean Acidification Program (OAP).
  • Cite as: Alin, Simone R.; Feely, Richard A.; Juranek, Laurie W.; Cosca, Catherine E. (2015). Partial pressure (or fugacity) of carbon dioxide, temperature, salinity and other variables collected from surface underway observations using carbon dioxide gas analyzer, shower head equilibrator and other instruments from R/V Wecoma in the U.S. West Coast California Current System during the 2011 West Coast Ocean Acidification Cruise (WCOA2011) from 2011-08-12 to 2011-08-30 (NODC Accession 0123607). Version 1.1. National Oceanographic Data Center, NOAA. Dataset. doi:10.7289/V51R6NGD [access date]
gov.noaa.nodc:0123607
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Ordering Instructions Data may be searched and downloaded using online services provided by NCEI using the online resource URLs in this record. Contact NCEI Information Services for custom orders. When requesting data from NCEI, the desired data set may be referred to by the unique package identification number listed in this metadata record.
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 2011-08-12 to 2011-08-30
Spatial Bounding Box Coordinates
N: 46.126
S: 31.95
E: -117.74
W: -127.552
Spatial Coverage Map
General Documentation
  • Project Metadata
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  • Dataset Description
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  • Descriptive Information
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Publication Dates
  • publication: 2015-01-12
Edition 1.1
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
Data Update Frequency As needed
Supplemental Information
PRINCIPAL INVESTIGATORS: Simone R. Alin; Richard A. Feely; Lauren W. Juranek.
FUNDING AGENCY: NOAA's Ocean Acidification Program (OAP).
PROJECT TITLE: Ocean Acidification Monitoring Network: West Coast Hydrographic Cruise.
PROJECT ID: OAPFY13.03.PMEL.002.

This data set was related to:
http://accession.nodc.noaa.gov/oas/0123467
Purpose The major objectives of the cruise were: 1) To characterize ocean acidification (OA) conditions on the U.S. West Coast; 2) To conduct inter-calibration measurements near other OA observing assets, including gliders and moorings, in the study area, allowing inter-calibration of these autonomous assets with high-quality, ship-based measurements; 3) To provide calibration data needed to develop predictive models for aragonite saturation state, pH, and other important OA indicators in the California Current System, based on widely measured parameters such as salinity, temperature, and oxygen concentration; 4) To examine relationships between processes leading to OA and hypoxia in coastal ecosystems; 5) To conduct biological measurements in conjunction with physical and chemical OA measurements; and 6) To provide scientific information on OA conditions and trends for resource management and decision support.
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 data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.
Dataset Citation
  • Cite as: Alin, Simone R.; Feely, Richard A.; Juranek, Laurie W.; Cosca, Catherine E. (2015). Partial pressure (or fugacity) of carbon dioxide, temperature, salinity and other variables collected from surface underway observations using carbon dioxide gas analyzer, shower head equilibrator and other instruments from R/V Wecoma in the U.S. West Coast California Current System during the 2011 West Coast Ocean Acidification Cruise (WCOA2011) from 2011-08-12 to 2011-08-30 (NODC Accession 0123607). Version 1.1. National Oceanographic Data Center, NOAA. Dataset. doi:10.7289/V51R6NGD [access date]
Cited Authors
  • Alin, Simone R.
  • Feely, Richard A.
  • Juranek, Laurie W.
  • Cosca, Catherine E.
Principal Investigators
Contributors
Resource Providers
Publishers
Acknowledgments
  • Funding Information: NOAA's Ocean Acidification Program (West Coast Ocean Acidification Monitoring Network: Volunteer Observing Ships, OAPFY13.03.PMEL.002)
Theme keywords NODC DATA TYPES THESAURUS NODC OBSERVATION TYPES THESAURUS WMO_CategoryCode
  • oceanography
Cruise ID
  • WCOA2011
EXPOCODE
  • 32WC20110812
Global Change Master Directory (GCMD) Science and Services Keywords
  • EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > CARBON DIOXIDE
  • EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE
  • EARTH SCIENCE > OCEANS > SALINITY/DENSITY > SALINITY
Provider Variable Names
  • SAL(TSG)_PERMIL
  • SST(TSG)_C
  • fCO2W@SST
Reference Section ID
  • West Coast Ocean Acidification Cruise (WCOA)
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
  • DOC/NOAA/OAR/PMEL > Pacific Marine Environmental Laboratory, OAR, NOAA, U.S. Department of Commerce
NODC COLLECTING INSTITUTION NAMES THESAURUS NODC SUBMITTING INSTITUTION NAMES THESAURUS
Platform keywords NODC PLATFORM NAMES THESAURUS
Instrument keywords NODC INSTRUMENT TYPES THESAURUS Global Change Master Directory (GCMD) Instrument Keywords
  • THERMOSALINOGRAPHS
Place keywords NODC SEA AREA NAMES THESAURUS Global Change Master Directory (GCMD) Location Keywords
  • OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN
Provider Geographic Names
  • North Pacific Ocean
  • U.S. West Coast California Current System
Project keywords NODC PROJECT NAMES THESAURUS Ocean Acidification Search Keywords
  • Ocean Acidification Data Stewardship (OADS) Project
  • Ocean Acidification Program (OAP)
Keywords NCEI ACCESSION NUMBER
Use Constraints
  • Cite as: Alin, Simone R.; Feely, Richard A.; Juranek, Laurie W.; Cosca, Catherine E. (2015). Partial pressure (or fugacity) of carbon dioxide, temperature, salinity and other variables collected from surface underway observations using carbon dioxide gas analyzer, shower head equilibrator and other instruments from R/V Wecoma in the U.S. West Coast California Current System during the 2011 West Coast Ocean Acidification Cruise (WCOA2011) from 2011-08-12 to 2011-08-30 (NODC Accession 0123607). Version 1.1. National Oceanographic Data Center, NOAA. Dataset. doi:10.7289/V51R6NGD [access date]
Access Constraints
  • 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.
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Processing Steps
  • 2015-01-12T16:32:06 - NCEI Accession 0123607 v1.1 was published.
Output Datasets
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Processing Steps
  • Parameter or Variable: pCO2 (fCO2) autonomous; Abbreviation: fCO2W@SST; Unit: uatm; Observation type: Surface underway; In-situ / Manipulation / Response variable: In situ observation; Measured or calculated: Calculated; Sampling instrument: Seawater pump; Location of seawater intake: Bow; Depth of seawater intake: 3 meters; Analyzing instrument: Neill Underway pCO2 measuring system (developed by Craig Neill, precursor to General Oceanics 8050). PMEL system ID: PMEL2; Detailed sampling and analyzing information: The sampling and analyzing methods of the Neill/General Oceanics Underway pCO2 systems are described in detail in: Pierrot, D.; Neill, C.; Sullivan, K.; Castle, R.; Wanninkhof, R.; Luger, H.; Johannessen, T.; Olsen, A.; Feely, R.A.; and Cosca, C.E. (2009). Recommendations for autonomous underway pCO2 measuring systems and data-reduction routines. Deep-Sea Res., II, v. 56, pp. 512-522. ; Equilibrator type: Shower head; Equilibrator volume: ~0.5 L; Is the equilibrator vented or not: Vented; Water flow rate: 3 L/min; Gas flow rate: ~0.8 L/m; How was temperature inside the equilibrator measured: Hart Scientific model 1521 digital thermometer, serial number A68850, with an NIST traceable model 5610 thermistor probe, serial number A690607. Accurate to plus minus 0.01 degrees Celsius.; How was pressure inside the equilibrator measured: Setra 239 differential pressure transducer, accurate to plus minus 0.15 hPa. The equilibrator was passively vented to a secondary equilibrator, and the Licor sample output was vented to the laboratory when CO2 measurements were made, thus equilibrator headspace pressure was assumed to be laboratory pressure. Pressure in the laboratory was measured with a GE Druck barometer, serial number 3054512, with an accuracy of plus minus 0.01 %fs.; Drying method for gas: From Pierrot, et al.: Sample air is dried in a condenser that is cooled to 4-5 oC by a Peltier thermoelectric device. This partially dried air flushes a chamber that is vented and remains at ambient pressure. The dried air inside the chamber is used as the counter flow in the Nafion(Trade Mark) tubing. A vacuum pump pulls the dried air from the chamber first through a fixed restrictor and then through the Nafion(Trade Mark) tubes, thus creating an absolute pressure and corresponding partial pressure gradient for water vapor across the membrane. When atmospheric air is measured, some of the partially dried air (80- 100 ml/min) is pushed through a Nafion (trade mark) tube, the analyzer and out a vent instead of flushing the chamber. The headspace gas, when being measured, is circulated in a closed loop through the analyzer at a rate similar to that of the atmospheric air (80-100 ml/min). It is dried first in the condenser, then in a Nafion(Trade Mark) tube prior to entering the analyzer and being returned to the equilibrator. Typically, the water mole fraction (xH2O) in the dried gas is about 2 parts per thousand (ppt), which corresponds to a dew point temperature of about -20 degrees Celsius. The liquid water condensed out of the sample air streams is removed by peristaltic pumps into the vent equilibrator at intervals determined by the user. ; SEA CO2 gas detector manufacturer: Licor, Inc; SEA CO2 gas detector model: Licor 6262, IRG3-1285; SEA CO2 gas detector resolution: 0.2 uatm; SEA CO2 gas detector uncertainty: 0.3 uatm for equilibrator measurements, 0.2 uatm for atmospheric measurements; Standardization technique: The system runs a full cycle in approximately 5 hours. The cycle starts with 4 standard gases, then measures 90 surface water samples interspersed with 5 atmospheric samples every 30 minutes. Each new gas is flushed through the Licor Analyzer for 4 minutes prior to a 10 second reading from the analyzer during which the sample cell is open to the atmosphere. Subsequent samples of the same gas are flushed through the Licor Analyzer for 30 seconds prior to a stop-flow measurement.; Standardization frequency: Every 5 hours; Standard gas manufacturer: Standard gases are supplied by NOAA's Earth System Research Laboratory, Global Monitoring Division, in Boulder, CO, and are directly traceable to the WMO scale.; Standard gas concentration: LL83535, 246.77 ppm; LL83519, 348.42 ppm; LL154382, 495 ppm; LL154371, 628.59 ppm; 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: plus minus 0.01 degrees Celsius; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value; Method reference: Pierrot, D.; Neill, C.; Sullivan, K.; Castle, R.; Wanninkhof, R.; Luger, H.; Johannessen, T.; Olsen, A.; Feely, R.A.; and Cosca, C.E. (2009). Recommendations for autonomous underway pCO2 measuring systems and data-reduction routines. Deep-Sea Res., II, v. 56, pp. 512-522. Feely, R.A., R. Wanninkhof, H.B. Milburn, C.E. Cosca, M. Stapp, and P.P. Murphy, A new automated underway system for making high precision pCO2 measurements onboard research ships, Analytica Chim. Acta, 377, 185-191, 1998. Wanninkhof and Thoning, Measurement of fugacity of Carbon Dioxide in surface water and air using continuous sampling methods, Marine Chemistry, 44, 189-205, 1993.; Researcher name: Catherine E. Cosca; Researcher institution: Pacific Marine Environmental Laboratory, National Oceanic and Atmospheric Administration.
  • Parameter or Variable: Sea surface temperature; Abbreviation: SST(TSG)_C; Unit: degrees Celsius; Observation type: Surface underway; In-situ / Manipulation / Response variable: In-situ observation; Measured or calculated: Measured; Sampling instrument: Seawater pump; Analyzing instrument: Thermosalinograhs onboard the research vessel; Researcher name: Catherine E. Cosca; Researcher institution: Pacific Marine Environmental Laboratory, National Oceanic and Atmospheric Administration.
  • Parameter or Variable: Sea surface salinity; Abbreviation: SAL(TSG)_PERMIL; Observation type: Surface underway; In-situ / Manipulation / Response variable: In-situ observation; Measured or calculated: Measured; Sampling instrument: Seawater pump; Analyzing instrument: Thermosalinograhs onboard the research vessel; Researcher name: Catherine E. Cosca; Researcher institution: Pacific Marine Environmental Laboratory, National Oceanic and Atmospheric Administration.
Lineage information for: repository
Processing Steps
  • 2015-04-22T00:00:00 - NOAA created the National Centers for Environmental Information (NCEI) by merging NOAA's National Climatic Data Center (NCDC), National Geophysical Data Center (NGDC), and National Oceanographic Data Center (NODC), including the National Coastal Data Development Center (NCDDC), per the Consolidated and Further Continuing Appropriations Act, 2015, Public Law 113-235. NCEI launched publicly on April 22, 2015.
Acquisition Information (collection)
Instrument
  • Carbon dioxide (CO2) gas analyzer
  • Shower head chamber equilibrator for autonomous carbon dioxide (CO2) measurement
  • thermosalinographs
Platform
  • WECOMA
Last Modified: 2018-04-25T21:07:54
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