Partial pressure of carbon dioxide (pCO2), temperature, salinity and other variables collected from surface underway observations using shower head equilibrator, carbon dioxide gas detector, and other instruments from NOAA Ship Oscar Dyson in the Bering Sea and coast of Alaska from 2014-03-03 to 2014-08-13 (NCEI Accession 0132046)
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title: Partial pressure of carbon dioxide (pCO2), temperature, salinity and other variables collected from surface underway observations using shower head equilibrator, carbon dioxide gas detector, and other instruments from NOAA Ship Oscar Dyson in the Bering Sea and coast of Alaska from 2014-03-03 to 2014-08-13 (NCEI Accession 0132046)
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abstract: This dataset contains underway measurements of pCO2, salinity, sea surface temperature, and other parameters collected in 2014 on board NOAA Ship Oscar Dyson in the Gulf of Alaska and the Bering Sea. Cruise names and Expocodes: DY1402 (330A20140303), DY1403 (330A20140314), DY1404 (330A20140405), DY1405 (330A20140507), DY1406 (330A20140520), DY1407_L1 (330A20140616), DY1407_L2 (330A20140704), DY1407_L3 (330A20140727). This effort was conducted in support of the coastal monitoring and research objectives of the NOAA Ocean Acidification Program (OAP).
purpose: The major objectives of the project were to characterize and map the key indicators of ocean acidification (OA) along the U.S. West Coast, and to continue a time series documenting the distribution of surface and atmospheric fCO2, salinity, temperature, and other parameters.
credit: Funding Information: NOAA Ocean Acidification Program (PMEL Sustained OA Data Management (PDM), 20845)
credit: Funding Information: NOAA Ocean Acidification Program (Sustained Ocean Acidification Data Management Quality Control Access and Products (Sutton PMEL), 17907)
credit: Funding Information: NOAA Ocean Acidification Program (PMEL Data Management Quality Control Access and Products, 13432)
credit: Funding Information: NOAA Ocean Acidification Program (West Coast Ocean Acidification Monitoring Network: Volunteer Observing Ships, OAPFY12.03.PMEL.002)
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keyword: Gulf of Alaska
keyword: North Pacific Ocean
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otherConstraints: Cite as: Alin, Simone R.; Cosca, Catherine E.; Feely, Richard A.; Lebon, Geoffrey T. (2015). Partial pressure of carbon dioxide (pCO2), temperature, salinity and other variables collected from surface underway observations using shower head equilibrator, carbon dioxide gas detector, and other instruments from NOAA Ship Oscar Dyson in the Bering Sea and coast of Alaska from 2014-03-03 to 2014-08-13 (NCEI Accession 0132046). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.7289/v50v89vp. Accessed [date].
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useLimitation: 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.
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title: 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
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title: 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.
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title: Wanninkhof, R., & Thoning, K. (1993). Measurement of fugacity of CO2 in surface water using continuous and discrete sampling methods. Marine Chemistry, 44(2–4), 189–204. https://doi.org/10.1016/0304-4203(93)90202-y
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title: 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
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LanguageCode: eng; USA
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eastBoundLongitude: -151.745
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beginPosition: 2014-03-03
endPosition: 2014-08-13
supplementalInformation: PRINCIPAL INVESTIGATORS: Alin, Simone R.; Cosca, Catherine E.; Feely, Richard A. FUNDING AGENCY: NOAA's Ocean Acidification Program (OAP). PROJECT TITLE: West Coast Ocean Acidification Monitoring Network: Volunteer Observing Ships. PROJECT ID: OAPFY12.03.PMEL.002.
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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.
orderingInstructions: Contact NCEI for other distribution options and instructions.
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description: NCEI Accession 0132046 v1.1 was published.
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DateTime: 2015-10-23T13:54:13Z
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description: published 2015-10-23T13:54:13Z
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dataQualityInfo: (DQ_DataQuality)
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description: 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: Measured; Sampling instrument: Seawater pump; Location of seawater intake: Bow; Analyzing instrument: General Oceanics 8050. PMEL system ID: GO9; 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.; Lüger, 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: about 0.5 L; Is the equilibrator vented or not: Vented; Water flow rate: 3 L/min; Gas flow rate: about 0.8 L/m; How was temperature inside the equilibrator measured: Hart Scientific model 1521 digital thermometer, serial number 1320065, with an NIST traceable model 5610 thermistor probe, serial number B011803. 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 %.; 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 tubing. A vacuum pump pulls the dried air from the chamber first through a fixed restrictor and then through the Nafion 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 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 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 7000, IRG4-0847; 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 10 hours. The cycle starts with 4 standard gases, then measures three rounds of 6 atmopherice samples followed by 60 surface water samples. Each new gas is flushed through the Licor Analyzer for 3 minutes prior to a stop-flow measurement.; Standardization frequency: Every 10 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: LL83539, 245.43 ppm; LL154363, 420.76 ppm; LL108056, 501.998 ppm; LL63968, 659.096 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., 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: Catherine E. Cosca; Researcher institution: Pacific Marine Environmental Laboratory, National Oceanic and Atmospheric Administration.
processStep: (LE_ProcessStep)
description: Parameter or Variable: Sea Surface Temperature; Abbreviation: SST(TSG)_C; Unit: Degree Celcius; Observation type: Surface Underway; In-situ / Manipulation / Response variable: In-situ observation; Measured or calculated: Measured; Sampling instrument: Seabird 45, maintained on the NOAA Ship Oscar Dyson; Uncertainty: 0.0025 degrees Celsius.
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description: Parameter or Variable: Salinity; Abbreviation: SAL(TSG)_PERMIL; Observation type: Surface Underway; In-situ / Manipulation / Response variable: In-situ observation; Measured or calculated: Measured; Sampling instrument: Seabird 45, maintained on the NOAA Ship Oscar Dyson; Uncertainty: 0.005 PSU .
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maintenanceNote: Metadata are developed, maintained and distributed by NCEI. Updates are performed as needed to maintain currentness.
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organisationName: NOAA National Centers for Environmental Information
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acquisitionInformation: (MI_AcquisitionInformation)
instrument: (MI_Instrument)
identifier: (MD_Identifier)
code: carbon dioxide (CO2) gas analyzer
type: carbon dioxide (CO2) gas analyzer
description: measures gaseous carbon dioxide Carbon dioxide gas analyzer has often been referred to as LI-COR, because a lot of researchers choose to use products manufactured by LI-COR incorporation for their carbon dioxide measurement. The main component of a carbon dioxide analyzer is a nondispersive infrared (NDIR) spectroscopic sensors to detect CO2 in a gaseous environment by its characteristic absorption. Carbon dioxide (CO2) gas analyzer works together with carbon dioxide (CO2) equilibrator (insttypes_id 184) to measure carbon dioxide in the water. To measure water carbon dioxide, water needs to be continuously supplied to a showerhead inside an equilibrator. As the water flows through the equilibrator chamber, dissolved carbon dioxide exchanges quickly with air in the headspace. This air is then sampled by the carbon dioxide analyzer to determine the mole fraction of CO2 in water.
instrument: (MI_Instrument)
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code: showerhead equilibrator
type: showerhead equilibrator
description: extracts dissolved CO2 from water A carbon dioxide equilibrator is usually in the shape of a vertical tube, with a showerhead on the top, some headspace, a lot of beads to increase the surface exchange area between water and air, a water seal device at the bottom to allow water to overflow, but prevents air exchange between inside and outside. Carbon dioxide (CO2) equilibrator works together with carbon dioxide (CO2) gas analyzer (insttypes_id 183) to measure carbon dioxide in the water. To measure water carbon dioxide, water needs to be continuously supplied to a showerhead inside an equilibrator. As the water flows through the equilibrator chamber, dissolved carbon dioxide exchanges quickly with air in the headspace. This air is then sampled by the carbon dioxide analyzer to determine the mole fraction of CO2 in water.
instrument: (MI_Instrument)
identifier: (MD_Identifier)
code: thermosalinograph
type: thermosalinograph
description: automated sea surface temperature and salinity instrument, usually attached to the hull of a ship Thermosalinograph is an automated Sea Surface Temperature and Salinity measurement system making measurement on board a ship using a water intake. [https://www.aoml.noaa.gov/phod/tsg/about.php 2021-01-29]
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code: NOAA Ship Oscar Dyson
description: Title: NOAA Ship Flag: United States of America Vessel Type: Fishing Vessel; Oceanographic Research; Ice Strengthened DOB: Jan 2005 IMO: 9270335
instrument: (missing)