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Surface underway measurements of partial pressure of carbon dioxide (pCO2), sea surface temperature, sea surface salinity and other parameters from Autonomous Surface Vehicle ASV_Saildrone1020 (EXPOCODE 32DB20190119) in the South Atlantic Ocean, South Pacific Ocean, Indian Ocean and Southern Ocean from 2019-01-19 to 2019-08-03 (NCEI Accession 0221912)


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            title:  Surface underway measurements of partial pressure of carbon dioxide (pCO2), sea surface temperature, sea surface salinity and other parameters from Autonomous Surface Vehicle ASV_Saildrone1020 (EXPOCODE 32DB20190119) in the South Atlantic Ocean, South Pacific Ocean, Indian Ocean and Southern Ocean from 2019-01-19 to 2019-08-03 (NCEI Accession 0221912)
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                date:  2020-11-14
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        abstract:  This dataset includes surface chemical, meteorological and physical data collected from Autonomous Surface Vehicle ASV_Saildrone1020 (EXPOCODE 32DB20190119) in the South Atlantic Ocean, South Pacific Ocean, Indian Ocean and Southern Ocean from 2019-01-19 to 2019-08-03. These data include xCO2 SW (wet) - mole fraction of CO2 in air in equilibrium with the seawater at sea surface temperature and measured humidity; H2O SW - mole fraction of H2O in air from equilibrator; xCO2 Air (wet) - mole fraction of CO2 in air at measured humidity; H2O Air - mole fraction of H2O in air; barometric pressure; MAPCO2 %O2 - the percent oxygen of the surface seawater divided by the percent oxygen of the atmosphere; SST - sea surface temperature; SSS - sea surface salinity; xCO2 SW (dry) - mole fraction of CO2 in air in equilibrium with the seawater at sea surface temperature (dry air); xCO2 Air (dry) - mole fraction of CO2 in air (dry air); fCO2 SW (sat) - fugacity of CO2 in air in equilibrium with the seawater at sea surface temperature (100% humidity); fCO2 Air (sat) - fugacity of CO2 in air (100% humidity); dfCO2 - difference of the fugacity of the CO2 in seawater and the fugacity of the CO2 in air (fCO2 SW - fCO2 Air); pCO2 SW (wet) - partial pressure of CO2 in air in equilibrium with the seawater at sea surface temperature (100% humidity); pCO2 Air (wet) - partial pressure of CO2 in air (100% humidity); dpCO2 - difference of the partial pressure of CO2 in seawater and air (pCO2 SW - pCO2 Air) and Wind speed at the anemometer. The Autonomous Surface Vehicle CO2 (ASVCO2) instruments used to collect these data include Bubble type equilibrator for autonomous carbon dioxide (CO2) measurement, Carbon dioxide (CO2) gas analyzer, Humidity Sensor, and oxygen meter.
        purpose:  This dataset is available to the public for a wide variety of uses including scientific research and analysis.
        credit:  Funding Information: NOAA Climate Program (Autonomous Surface Vehicles, Wave Gliders)
        credit:  Funding Information: NOAA
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        topicCategory:  (MD_TopicCategoryCode) environment
        topicCategory:  (MD_TopicCategoryCode) oceans
        topicCategory:  (MD_TopicCategoryCode) climatologyMeteorologyAtmosphere
        extent:  (EX_Extent)
            geographicElement:  (EX_GeographicBoundingBox)
                westBoundLongitude:  -180
                eastBoundLongitude:  180
                southBoundLatitude:  -60.986
                northBoundLatitude:  -25.151
            temporalElement:  (EX_TemporalExtent)
                extent:
                  TimePeriod:
                    beginPosition:  2019-01-19
                    endPosition:  2019-08-03
        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.
            distributorFormat:  (MD_Format)
                name:  Originator data format
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            distributorTransferOptions:  (MD_DigitalTransferOptions)
                transferSize:
                  Real:  1.38
                onLine:  (CI_OnlineResource)
                    linkage: https://www.ncei.noaa.gov/data/oceans/ncei/ocads/metadata/0221912.html
                    protocol:  HTTPS
                    applicationProfile:  Web browser
                    name:  Project Metadata
                    description:  Navigate directly to the URL for a descriptive web page with download links.
                    function:  (CI_OnLineFunctionCode) information
                onLine:  (CI_OnlineResource)
                    linkage: https://doi.org/10.25921/6zja-cg56
                    protocol:  HTTPS
                    applicationProfile:  Web browser
                    name:  NCEI Dataset Landing Page
                    description:  Navigate directly to the URL for a descriptive web page with download links.
                    function:  (CI_OnLineFunctionCode) information
                onLine:  (CI_OnlineResource)
                    linkage: https://www.ncei.noaa.gov/archive/accession/oas/221912
                    protocol:  HTTPS
                    applicationProfile:  Web browser
                    name:  Descriptive Information
                    description:  Navigate directly to the URL for a descriptive web page with download links.
                    function:  (CI_OnLineFunctionCode) information
                onLine:  (CI_OnlineResource)
                    linkage: https://www.ncei.noaa.gov/archive/accession/download/221912
                    protocol:  HTTPS
                    applicationProfile:  Web browser
                    name:  HTTPS
                    description:  Navigate directly to the URL for data access and direct download.
                    function:  (CI_OnLineFunctionCode) download
                onLine:  (CI_OnlineResource)
                    linkage: ftp://ftp-oceans.ncei.noaa.gov/nodc/archive/arc0163/0221912/
                    protocol:  FTP
                    applicationProfile:  Any FTP client
                    name:  FTP
                    description:  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).
                    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:  NCEI Accession 0221912 v1.1 was published.
                dateTime:
                  DateTime:  2020-11-14T22:09:35Z
                output:  (LE_Source)
                    sourceCitation:  (CI_Citation)
                        title:  NCEI Accession 0221912 v1.1
                        date:  (CI_Date)
                            date: (inapplicable)
                            dateType:  (CI_DateTypeCode) publication
                        citedResponsibleParty:  (CI_ResponsibleParty)
                            individualName: (inapplicable)
                            contactInfo:  (CI_Contact)
                                onlineResource:  (CI_OnlineResource)
                                    linkage: https://www.ncei.noaa.gov/archive/accession/0221912/1.1
                                    protocol:  HTTPS
                                    name:  NCEI Accession 0221912 v1.1
                                    description:  published 2020-11-14T22:09:35Z
                                    function:  (CI_OnLineFunctionCode) download
                            role: (inapplicable)
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    dataQualityInfo:  (DQ_DataQuality)
        scope:  (DQ_Scope)
            level:  (MD_ScopeCode) dataset
        lineage:  (LI_Lineage)
            processStep:  (LE_ProcessStep)
                description:  Parameter or Variable: xCO2 SW (wet); Abbreviation: xCO2 SW (wet); Unit: [μmol/mol]; Controlled vocabulary name: partial pressure of carbon dioxide - water; Observation type: surface underway; In-situ / Manipulation / Response variable: in-situ; Sampling instrument: ASVCO2 (NOAA trademark); Analyzing instrument: Absolute, non-dispersive infrared (NDIR) gas analyzer; LI-820; Sensor manufacturer: NOAA PMEL; Duration: 1hr cycle; Detailed sampling and analyzing information: At the beginning of each sample, the instrument self-calibrates using a zero and high standard. The zero standard is generated by cycling a small amount of air through a soda lime chamber. The high standard is from a cylinder of calibrated standard reference gas, 396.21 umol/mol, from ESRL. ESRL standards are traceable to WMO x93 scale with a stated reproducibility of 0.06 micromole/mole. For more information on estimates of accuracy and precision of the MAPCO2 system, see Sutton et al. 2014.; Uncertainty: Resolution_Water - 0.7 uatm; Uncertainty_Water - 2 uatm; Resolution_Air - 0.6 uatm; Uncertainty_Air - 1 uatm; Method reference: Sutton, A.J., Sabine, C.L., Maenner-Jones, S., Lawrence-Slavas, N., Meinig, C., Feely, R.A., Mathis, J.T., Musielewicz, S., Bott, R., McLain, P.D., Fought, J., Kozyr, A., 2014. A high-frequency atmospheric and seawater pCO2 data set from 14 open ocean sites using a moored autonomous system. Earth Sys. Sci. Data, 6, https://doi.org/10.5194/essd-6-353-2014, 353-366..
            processStep:  (LE_ProcessStep)
                description:  Parameter or Variable: H2O SW; Abbreviation: H2O SW; Unit: [mmol/mol]; Observation type: surface underway; In-situ / Manipulation / Response variable: in-situ; Sampling instrument: ASVCO2 (NOAA trademark); Sensor manufacturer: NOAA PMEL.
            processStep:  (LE_ProcessStep)
                description:  Parameter or Variable: xCO2 Air (wet); Abbreviation: xCO2 Air (wet); Unit: [μmol/mol]; Controlled vocabulary name: Partial pressure (or fugacity) of carbon dioxide - atmosphere; Observation type: surface underway; In-situ / Manipulation / Response variable: in-situ; Sampling instrument: ASVCO2 (NOAA trademark); Sensor manufacturer: NOAA PMEL.
            processStep:  (LE_ProcessStep)
                description:  Parameter or Variable: H2O Air; Abbreviation: H2O Air; Unit: [mmol/mol]; Observation type: surface underway; In-situ / Manipulation / Response variable: in-situ; Sampling instrument: ASVCO2 (NOAA trademark); Sensor manufacturer: NOAA PMEL.
            processStep:  (LE_ProcessStep)
                description:  Parameter or Variable: Pressure of Licor; Abbreviation: Pressure of Licor; Unit: [hPa]; In-situ / Manipulation / Response variable: in-situ; Sampling instrument: ASVCO2 (NOAA trademark); Sensor manufacturer: NOAA PMEL.
            processStep:  (LE_ProcessStep)
                description:  Parameter or Variable: Licor Temp; Abbreviation: Licor Temp; Unit: [Deg. C]; Observation type: surface underway; In-situ / Manipulation / Response variable: in-situ; Sampling instrument: ASVCO2 (NOAA trademark); Sensor manufacturer: NOAA PMEL.
            processStep:  (LE_ProcessStep)
                description:  Parameter or Variable: The percent oxygen of the surface seawater divided by the percent oxygen of the atmosphere at 0.5m (20”) above the sea surface.; Abbreviation: MAPCO2 %O2; Unit: %; Observation type: surface underway; In-situ / Manipulation / Response variable: in-situ; Detailed sampling and analyzing information: The oxygen measurement is made in the equilibrated air. We have found that the oxygen does not come to complete equilibrium so any rapid changes in oxygen do not get properly captured using this system. Therefore, we tend to use the oxygen data only as a qualitative sense of the biology. It is not a quantitative measure.
            processStep:  (LE_ProcessStep)
                description:  Parameter or Variable: Sea Surface Temperature; Abbreviation: SST; Unit: [Deg. C]; Observation type: surface underway; In-situ / Manipulation / Response variable: in-situ.
            processStep:  (LE_ProcessStep)
                description:  Parameter or Variable: Sea Surface Salinity; Abbreviation: SSS; Controlled vocabulary name: SALINITY; Observation type: surface underway; In-situ / Manipulation / Response variable: in-situ.
            processStep:  (LE_ProcessStep)
                description:  Parameter or Variable: Mole fraction of CO2 in air in equilibrium with the seawater at sea surface temperature (dry air); Abbreviation: xCO2 SW (dry); Unit: [μmol/mol]; Observation type: surface underway; In-situ / Manipulation / Response variable: in-situ.
            processStep:  (LE_ProcessStep)
                description:  Parameter or Variable: Mole fraction of CO2 in air at the airblock, 0.5m (20”) above the sea surface (dry air); Abbreviation: xCO2 Air (dry); Unit: [μmol/mol]; Observation type: surface underway; In-situ / Manipulation / Response variable: in-situ.
            processStep:  (LE_ProcessStep)
                description:  Parameter or Variable: Fugacity of CO2 in air in equilibrium with the seawater at sea surface temperature (100% humidity); Abbreviation: fCO2 SW (sat); Unit: [uatm]; Observation type: surface underway; In-situ / Manipulation / Response variable: in-situ; Detailed sampling and analyzing information: Since the measurements are taken at the sea surface, warming calculations are not necessary.
            processStep:  (LE_ProcessStep)
                description:  Parameter or Variable: Fugacity of CO2 in air at the airblock, 0.5m (20”) above the sea surface (100% humidity); Abbreviation: fCO2 Air (sat); Unit: [uatm]; Observation type: surface underway; In-situ / Manipulation / Response variable: in-situ.
            processStep:  (LE_ProcessStep)
                description:  Parameter or Variable: Difference of the fugacity of the CO2 in seawater and the fugacity of the CO2 in air (fCO2 SW - fCO2 Air); Abbreviation: dfCO2; Unit: [uatm]; Controlled vocabulary name: AIR-SEA DIFFERENCE - PARTIAL PRESSURE (OR FUGACITY) OF CARBON DIOXIDE; In-situ / Manipulation / Response variable: in-situ.
            processStep:  (LE_ProcessStep)
                description:  Parameter or Variable: Partial Pressure of CO2 in air in equilibrium with the seawater at sea surface temperature (100% humidity); Abbreviation: pCO2 SW (wet); Unit: uatm; In-situ / Manipulation / Response variable: in-situ.
            processStep:  (LE_ProcessStep)
                description:  Parameter or Variable: Partial Pressure of CO2 in air at the airblock, 0.5m (20”) above the sea surface (100% humidity); Abbreviation: pCO2 Air (wet); Unit: uatm; In-situ / Manipulation / Response variable: in-situ.
            processStep:  (LE_ProcessStep)
                description:  Parameter or Variable: Difference of the partial pressure of CO2 in seawater and air (pCO2 SW - pCO2 Air; Abbreviation: dpCO2; Unit: uatm; Controlled vocabulary name: AIR-SEA DIFFERENCE - PARTIAL PRESSURE (OR FUGACITY) OF CARBON DIOXIDE; In-situ / Manipulation / Response variable: in-situ.
            processStep:  (LE_ProcessStep)
                description:  Parameter or Variable: Wind speed at the anemometer, 3.8m above the sea surface; Abbreviation: WSPD; Unit: m/s; In-situ / Manipulation / Response variable: in-situ .
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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:  barometric pressure sensor
            type:  barometric pressure sensor
            description:  instrument used to measure the atmospheric pressure.
        instrument:  (MI_Instrument)
            identifier:  (MD_Identifier)
                code:  bubble type equilibrator for autonomous carbon dioxide (CO2) measurement
            type:  bubble type equilibrator for autonomous carbon dioxide (CO2) measurement
            description:  This type of equilibrators are often used on buoys. Developed by Pacific Marine Environmental Laboratory and Monterey Bay Aquarium Research Institute, the h-shaped bubble equilibrator does not require a water pump to spray water from the top. see Takahashi 1961 for more information.
        instrument:  (MI_Instrument)
            identifier:  (MD_Identifier)
                code:  oxygen sensor
            type:  oxygen sensor
            description:  Any instrument that measures oxygen content in a compound.
        instrument:  (MI_Instrument)
            identifier:  (MD_Identifier)
                code:  salinometer
            type:  salinometer
            description:  generic salinometer use salinometer when the instrument type used is unclear but the data include salinity measurements
        instrument:  (MI_Instrument)
            identifier:  (MD_Identifier)
                code:  temperature sensor
            type:  temperature sensor
            description:  A sensor used to measure temperature.
        platform:  (MI_Platform)
            identifier:  (MD_Identifier)
                code:  drifting buoy
            description:  99 = unknown country or institution. use this entry for the generic idea of a drifting buoy.
            instrument: (missing)