Underway pCO2 Measurements in Surface Waters and the Atmosphere During R/V Xue Long CHINARE2012 Expedition in the west Arctic Ocean from 2012-07-17 to 2012-09-12 (NCEI Accession 0168338)
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title: Underway pCO2 Measurements in Surface Waters and the Atmosphere During R/V Xue Long CHINARE2012 Expedition in the west Arctic Ocean from 2012-07-17 to 2012-09-12 (NCEI Accession 0168338)
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abstract: The underway surface and atmospheric CO2 levels were measured in the west Arctic Ocean during the 5th Chinese National Arctic Research Expedition (CHINARE2012) from 2012-07-17 to 2012-09-12. The system was monitored and calibrated with three certified gas standards and a zero gas every 3 hours. The dataset was reduced by the MatLab program pCO2 Sys v126, following the procedure in Pierrot et al. (2009). The Accession 0168338 includes measurements of fugacity of CO2 (fCO2) in sea water at sea water temperature, fugacity of CO2 (fCO2) in atmosphere, sea surface temperature, sea surface salinity, atmospheric pressure, and delta fCO2 between sea water and atmosphere (fCO2w - fCO2a).
purpose: This dataset is available to the public for a wide variety of uses including scientific research and analysis.
credit: Funding Information: National Natural Science Foundation of China; US National Science Foundation (NSF) (41230529, 41476172, 41476173 and 41406221; NSF-ARC-0909330 and NSF PLR-1304337)
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individualName: Pierrot, Denis
role: (CI_RoleCode) author
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individualName: Neill, Craig
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individualName: Sullivan, Kevin
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individualName: Castle, Robert
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individualName: Wanninkhof, Rik
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individualName: Lüger, Heike
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individualName: Johannessen, Truls
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individualName: Olsen, Are
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individualName: Feely, Richard A.
role: (CI_RoleCode) author
citedResponsibleParty: (CI_ResponsibleParty)
individualName: Cosca, Catherine E.
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organisationName: Elsevier BV
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presentationForm: (CI_PresentationFormCode) documentDigital
series: (CI_Series)
name: Deep Sea Research Part II: Topical Studies in Oceanography
issueIdentification: 56(8-10)
otherCitationDetails: ISSN 0967-0645, pp. 512-522
associationType: (DS_AssociationTypeCode) crossReference
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title: R/V Xue Long Expeditions Underway Data
date: (CI_Date)
date: 2022
dateType: (CI_DateTypeCode) publication
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linkage: https://www.ncei.noaa.gov/access/ocean-carbon-acidification-data-system/oceans/VOS_Program/Xuelong.html
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Anchor: https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/institution/details/1730 US DOC; NOAA; NESDIS; National Centers for Environmental Information (NCEI)
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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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role: (CI_RoleCode) publisher
presentationForm: (CI_PresentationFormCode) documentDigital
otherCitationDetails: [accessed 2024-02-08]
associationType: (DS_AssociationTypeCode) crossReference
initiativeType: (DS_InitiativeTypeCode) program
language:
LanguageCode: eng; USA
characterSet: (MD_CharacterSetCode) utf8
topicCategory: (MD_TopicCategoryCode) environment
topicCategory: (MD_TopicCategoryCode) oceans
topicCategory: (MD_TopicCategoryCode) climatologyMeteorologyAtmosphere
extent: (EX_Extent)
geographicElement: (EX_GeographicBoundingBox)
westBoundLongitude: -174.03
eastBoundLongitude: -162.74
southBoundLatitude: 65
northBoundLatitude: 81.94
temporalElement: (EX_TemporalExtent)
extent:
TimePeriod:
beginPosition: 2012-07-17
endPosition: 2012-09-12
supplementalInformation: (missing)
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distributionInfo: (MD_Distribution)
distributor: (MD_Distributor)
distributorContact: (CI_ResponsibleParty)
organisationName:
Anchor: https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/institution/details/1730 NOAA National Centers for Environmental Information
contactInfo: (CI_Contact)
phone: (CI_Telephone)
voice: +1-301-713-3277
address: (CI_Address)
electronicMailAddress: NCEI.Info@noaa.gov
role: (CI_RoleCode) pointOfContact
distributionOrderProcess: (MD_StandardOrderProcess)
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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name: Originator data format
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linkage: https://doi.org/10.7289/v5j964nm
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applicationProfile: Web browser
name: NCEI Dataset Landing Page
description: Navigate directly to the URL for a descriptive web page with download links.
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linkage: https://www.ncei.noaa.gov/archive/accession/oas/168338
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dataQualityInfo: (DQ_DataQuality)
scope: (DQ_Scope)
level: (MD_ScopeCode) dataset
lineage: (LI_Lineage)
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description: NCEI Accession 0168338 v1.1 was published.
dateTime:
DateTime: 2017-11-18T03:32:05Z
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title: NCEI Accession 0168338 v1.1
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linkage: https://www.ncei.noaa.gov/archive/accession/0168338/1.1
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name: NCEI Accession 0168338 v1.1
description: published 2017-11-18T03:32:05Z
function: (CI_OnLineFunctionCode) download
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dataQualityInfo: (DQ_DataQuality)
scope: (DQ_Scope)
level: (MD_ScopeCode) dataset
lineage: (LI_Lineage)
processStep: (LE_ProcessStep)
description: Parameter or Variable: pCO2 (fCO2) autonomous; Abbreviation: fCO2_SW@SST; Unit: micro-atmosphere; Observation type: surface underway; Measured or calculated: measured; Sampling instrument: underway water pump; Location of seawater intake: near seachest with ice grating (port side of Xuelong); Analyzing instrument: underway pCO2 GO-system; Detailed sampling and analyzing information: see Pierrot et al., 2009; Equilibrator type: Sprayhead above dynamic pool, no thermal jacket (shower head type equilibrator); Equilibrator volume: 0.95 L (0.4 L water, 0.55 L headspace); Is the equilibrator vented or not: No; Water flow rate: 1.5 - 2.5 L/min; Gas flow rate: 70 - 150 ml/min; Drying method for gas: Gas stream passes through a thermoelectric condenser (~5 deg C) and then through a Perma Pure (Nafion) dryer before reaching the analyzer (90% dry).; SEA CO2 gas detector manufacturer: LI-COR; SEA CO2 gas detector resolution: 0.01 microatmosphere; SEA CO2 gas detector uncertainty: 1 microatmospheres; Standardization frequency: every 3 hours; Standard gas concentration: 0, 244.25, 366.86, 546.98 ppm; At what temperature was pCO2 reported: in situ temperature; Uncertainty: 2 microatmosphere in fCO2_SW; Quality flag convention: 2=good, 3=questionable; 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.
processStep: (LE_ProcessStep)
description: Parameter or Variable: Sea Surface Temperature; Abbreviation: SST; Unit: degree Celsius; Analyzing instrument: Seabird (SEB); Uncertainty: Accuracy: 0.01 degree Celsius; Precision: 0.001 degree Celsius.
processStep: (LE_ProcessStep)
description: Parameter or Variable: Sea Surface Salinity; Abbreviation: SSS; Unit: (none); Sampling instrument: Seabird (SEB-45); Uncertainty: Accuracy: 0.005 ; Precision: 0.0002.
processStep: (LE_ProcessStep)
description: Parameter or Variable: Atmospheric Pressure at the sea surface; Abbreviation: PRES_ATM@SSP; Unit: hPa.
processStep: (LE_ProcessStep)
description: Parameter or Variable: Temperature recorded from inside the equilibrator; Abbreviation: TEMP_EQU; Unit: degree Celsius.
processStep: (LE_ProcessStep)
description: Parameter or Variable: Pressure inside the equilibrator; Abbreviation: PRES_EQU; Unit: hPa.
processStep: (LE_ProcessStep)
description: Parameter or Variable: Mole fraction of carbon dioxide inside the equilibrator; Abbreviation: xCO2_EQU; Unit: ppm.
processStep: (LE_ProcessStep)
description: Parameter or Variable: Mole fraction of carbon dioxide in the atmosphere; Abbreviation: xCO2_ATM_interpolated; Unit: ppm.
processStep: (LE_ProcessStep)
description: Parameter or Variable: Fugacity of seawater carbon dioxide after corrected to the in-situ sea surface temperature; Abbreviation: fCO2_SW@SST; Unit: microatmosphere.
processStep: (LE_ProcessStep)
description: Parameter or Variable: Interpolated atmospheric fCO2; Abbreviation: fCO2_ATM_interpolated; Unit: microatmosphere.
processStep: (LE_ProcessStep)
description: Parameter or Variable: Delta fCO2 between sea water and atmosphere (fCO2w - fCO2a); Abbreviation: dfCO2; Unit: microatmosphere .
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metadataMaintenance: (MD_MaintenanceInformation)
maintenanceAndUpdateFrequency: (MD_MaintenanceFrequencyCode) asNeeded
maintenanceNote: Metadata are developed, maintained and distributed by NCEI. Updates are performed as needed to maintain currentness.
contact: (CI_ResponsibleParty)
organisationName: NOAA National Centers for Environmental Information
role: (CI_RoleCode) custodian
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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: 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)
identifier: (MD_Identifier)
code: Showerhead equilibrator
type: Showerhead equilibrator
description: 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.
platform: (MI_Platform)
identifier: (MD_Identifier)
code: XUE LONG
description: R/V icebreaker, IMO 8877899, Owner: Polar Research Institute of China, Overall length (meters): 167.0(m) https://en.pric.org.cn/index.php?c=category&id=90 Additional equipment: Dolphin helicopter Overall length (meters): 11.44 Registration no.: B-7102 Call sign: 7102
instrument: (missing)