NOAA Atmospheric Carbon Dioxide Mole Fractions from Mauna Loa Observatory, Hawaii, United States


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            title:  NOAA Atmospheric Carbon Dioxide Mole Fractions from Mauna Loa Observatory, Hawaii, United States
            alternateTitle:  Mauna Loa CO2
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                date:  2014-08-05
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                  Anchor:  DOI doi:10.7289/V54X55RG
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        abstract:  This data set contains continuous measurements of atmospheric carbon dioxide mole fractions from the NOAA/ESRL observatory at Mauna Loa, Hawaii. Data are expressed in hourly, daily and monthly averages in units of micromole/mole for the time period of 1974-2013. Data are archived at the NOAA National Climatic Data Center (NCDC), but are produced and available from NOAA Earth System Research Laboratory (ESRL).
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            otherConstraints:  Cite as: NOAA ESRL Global Monitoring Division. 2014, updated annually. Atmospheric Carbon Dioxide Dry Air Mole Fractions from quasi-continuous measurements at Mauna Loa, Hawaii. Compiled by K.W. Thoning, D.R. Kitzis, and A. Crotwell. National Oceanic and Atmospheric Administration (NOAA), Earth System Research Laboratory (ESRL), Global Monitoring Division (GMD): Boulder, Colorado, USA. Version 2014-08 at http://dx.doi.org/10.7289/V54X55RG
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            otherConstraints:  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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            otherConstraints:  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.
        aggregationInfo:  (MD_AggregateInformation)
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                title:  Atmospheric carbon dioxide at Mauna Loa Observatory: 1. NOAA Global Monitoring for Climatic Change measurements with a nondispersive infrared analyzer
                date:  (CI_Date)
                    date:  1989-06-20
                    dateType:  (CI_DateTypeCode) publication
                edition:  Journal of Geophysical Research-Atmospheres, 94, 8533-8547
                identifier:  (MD_Identifier)
                    code:  10.1029/JD094iD06p08533
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                    organisationName:  Journal of Geophysical Research-Atmospheres
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                            linkage: https://doi.org/10.1029/JD094iD06p08533
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                            name:  Atmospheric carbon dioxide at Mauna Loa Observatory: 1. NOAA Global Monitoring for Climatic Change measurements with a nondispersive infrared analyzer
                            description:  Wiley Online Library
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            aggregateDataSetName:  (CI_Citation)
                title:  Atmospheric carbon dioxide at Mauna Loa Observatory, 2. Analysis of the NOAA/GMCC data, 1974-1985.
                date:  (CI_Date)
                    date:  1989-06-20
                    dateType:  (CI_DateTypeCode) publication
                edition:  Journal of Geophysical Research-Atmospheres, 94, 8549-8565
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                    code:  10.1029/JD094iD06p08549
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                    organisationName:  Journal of Geophysical Research-Atmospheres
                    role:  (CI_RoleCode) publisher
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                    organisationName: (missing)
                    contactInfo:  (CI_Contact)
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                            linkage: https://doi.org/10.1029/JD094iD06p08549
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                            name:  Atmospheric carbon dioxide at Mauna Loa Observatory, 2. Analysis of the NOAA/GMCC data, 1974-1985.
                            description:  Wiley Online Library
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                title:  Estimating uncertainty of the WMO mole fraction scale for carbon dioxide in air
                date:  (CI_Date)
                    date:  2006-03-26
                    dateType:  (CI_DateTypeCode) publication
                edition:  Journal of Geophysical Research-Atmospheres, 111, D8, 27
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                    organisationName:  Journal of Geophysical Research - Atmospheres
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                            name:  Estimating uncertainty of the WMO mole fraction scale for carbon dioxide in air
                            description:  Wiley Online Library
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        language:  eng; USA
        topicCategory:  (MD_TopicCategoryCode) climatologyMeteorologyAtmosphere
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                    description:  ground condition
                    beginPosition:  1974-05-24
                    endPosition:  2013-12-31
                    timeInterval:  1
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                        deliveryPoint:  151 Patton Avenue
                        deliveryPoint:  Veach-Baley Federal Building, Room 468
                        city:  Asheville
                        administrativeArea:  NC
                        postalCode:  28801-5001
                        country:  USA
                        electronicMailAddress:  ncei.orders@noaa.gov
                    onlineResource:  (CI_OnlineResource)
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                        name:  NOAA National Centers for Environmental Information (NCEI)
                        description:  NCEI home page with information, data access and contact information.
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                fees:  In most cases, electronic downloads of the data are free, however fees may apply for data certifications, copies of analog materials, and data distribution on physical media.
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                    applicationProfile:  Description
                    name:  NOAA Atmospheric Carbon Dioxide Mole Fractions from Mauna Loa Observatory, Hawaii, United States Landing Page
                    description:  Dataset landing page with general information and access links for the dataset.
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                        deliveryPoint:  Veach-Baley Federal Building, Room 468
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                        administrativeArea:  NC
                        postalCode:  28801-5001
                        country:  USA
                        electronicMailAddress:  ncei.orders@noaa.gov
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                    linkage: ftp://aftp.cmdl.noaa.gov/data/trace_gases/co2/in-situ/surface/mlo/
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                        administrativeArea:  NC
                        postalCode:  28801-5001
                        country:  USA
                        electronicMailAddress:  ncei.orders@noaa.gov
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                    linkage: ftp://aftp.cmdl.noaa.gov/data/trace_gases/co2/in-situ/surface/mlo/
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    dataQualityInfo:  (DQ_DataQuality)
        scope:  (DQ_Scope)
            level:  (MD_ScopeCode) dataset
            extent:  #boundingExtent
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            statement:  CO2 mixing ratios reported in these files were measured by a nondispersive infrared absorption technique. Descriptions of the sampling, measurement, and calibration procedures are given in Komhyr et al., 1989; Thoning et al., 1989, and Zhao and Tans, 2006.
            processStep:  (LE_ProcessStep)
                description:  Quasi-continuous CO2 dry air mole fractions from 1980 to 2006 have all been recalculated to bring them into the WMO X2007 Mole Fraction Scale (X07). The data since 2007 were already on the X07 scale. WMO X2007 is based on repeated manometric measurements of the NOAA primary standards (Zhao and Tans, 2006) and comparison of those results to similar measurements made over a period of more than 10 years at Scripps Institution of Oceanography. The difference between the X07 and the previous scales propagated by SIO and NOAA (X83, X87, etc.) is ~0.2 ppm (X07-previous) in the 1980s, decreasing to ~0.1 ppm in the late 1990s, and to 0.0 ppm by 2006. The recalculation of individual measurements was accomplished by first determining the X07 values for the reference gases used to measure the air samples and then using those values with the raw data (NDIR voltages) to recompute mole fractions for each sample.
                dateTime: (missing)
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                    identifier: (missing)
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                        citation:  (CI_Citation)
                            title:  The WMO Mole Fraction Scales for CO2 and other greenhouse gases, and uncertainty of the atmospheric measurements
                            date:  (CI_Date)
                                date:  2009-09-07
                                dateType:  (CI_DateTypeCode) publication
                            citedResponsibleParty:  (CI_ResponsibleParty)
                                organisationName:  DOC/NOAA/ESRL/GMD > Global Monitoring Division, Earth System Research Laboratory, NOAA, U.S. Department of Commerce
                                role:  (CI_RoleCode) author
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                                organisationName: (missing)
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                                        linkage: http://www.esrl.noaa.gov/gmd/ccl/co2report.html
                                        applicationProfile:  Web Browser
                                        name:  The WMO Mole Fraction Scales for CO2 and other greenhouse gases, and uncertainty of the atmospheric measurements
                                        description:  Carbon Dioxide (CO2) WMO Scale
                                        function:  (CI_OnLineFunctionCode) information
                                role: (missing)
                        description:  See Algorithm Citation
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    dataQualityInfo:  (DQ_DataQuality)
        scope:  (DQ_Scope)
            level:  (MD_ScopeCode) repository
            levelDescription:  (MD_ScopeDescription)
                other:  NOAA National Centers for Environmental Information
        lineage:  (LI_Lineage)
            processStep:  (LE_ProcessStep)
                description:  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.
                dateTime:
                  DateTime:  2015-04-22T00:00:00
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    metadataMaintenance:  (MD_MaintenanceInformation)
        maintenanceAndUpdateFrequency:  (MD_MaintenanceFrequencyCode) asNeeded
        maintenanceNote:  Bulk metadata change applied on 2018-11-05. See version control repository history for metadata change details.
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    acquisitionInformation:  (MI_AcquisitionInformation)
        instrument:  (MI_Instrument)
            identifier:  (MD_Identifier)
                code:  Hartmann-Braun URAS 2 #37626682
            type:  Carbon Dioxide Nondispersive Infrared Analyzer
            description:  Used from May 1974 to August 10, 1987
            mountedOn:  #MLO_Platform
        instrument:  (MI_Instrument)
            identifier:  (MD_Identifier)
                code:  Siemens Ultramat 3 #V02-512
            type:  Carbon Dioxide Nondispersive Infrared Analyzer
            description:  Used from August 11, 1987 to October 19, 2004
            mountedOn:  #MLO_Platform
        instrument:  (MI_Instrument)
            identifier:  (MD_Identifier)
                code:  Licor 7000 #IRG4-0319
            type:  Carbon Dioxide Nondispersive Infrared Analyzer
            description:  Used from October 20, 2004 to May 29, 2005
            mountedOn:  #MLO_Platform
        instrument:  (MI_Instrument)
            identifier:  (MD_Identifier)
                code:  Licor 7000 #IRG4-0322
            type:  Carbon Dioxide Nondispersive Infrared Analyzer
            description:  Used from May 30, 2005 to December 22, 2009 and from March 30, 2010 to December 31, 2013
            mountedOn:  #MLO_Platform
        instrument:  (MI_Instrument)
            identifier:  (MD_Identifier)
                code:  Licor 6251 #IRG1-0407
            type:  Carbon Dioxide Nondispersive Infrared Analyzer
            description:  Used from December 23, 2009 to March 9, 2010
            mountedOn:  #MLO_Platform
        instrument:  (MI_Instrument)
            identifier:  (MD_Identifier)
                code:  Licor 6251
            type:  Carbon Dioxide Nondispersive Infrared Analyzer
            description:  Used from March 9, 2010 to March 30, 2010
            mountedOn:  #MLO_Platform
        platform:  (MI_Platform)
            identifier:  (MD_Identifier)
                code:  MLO
            description:  Mauna Loa Observatory is located on the Island of Hawaii at an elevation of 3397 m on the northern flank of Mauna Loa volcano at 200 north. Established in 1957, Mauna Lao Observatory has grown to become the premier long-term atmospheric monitoring facility on earth and is the site where the ever-increasing concentrations of global atmospheric carbon dioxide were determined. The observatory consists of 10 buildings from which up to 250 different atmospheric parameters are measured by a complement of 12 NOAA/ESRL and other agency scientists and engineers More information at http://www.esrl.noaa.gov/gmd/obop/mlo/
            sponsor:  (CI_ResponsibleParty)
                individualName:  John Barnes
                organisationName:  DOC/NOAA/ESRL/GMD > Global Monitoring Division, Earth System Research Laboratory, NOAA, U.S. Department of Commerce
                positionName:  Director, Mauna Loa Observatory
                contactInfo:  (CI_Contact)
                    phone:  (CI_Telephone)
                        voice:  (808) 933-6965
                        facsimile:  (808)933-6967
                    address:  (CI_Address)
                        deliveryPoint:  NOAA - Mauna Loa Observatory 1437 Kilauea Ave. #102
                        city:  Hilo
                        administrativeArea:  HI
                        postalCode:  96720
                        country:  USA
                        electronicMailAddress:  John.E.Barnes@noaa.gov
                    onlineResource:  (CI_OnlineResource)
                        linkage: http://www.esrl.noaa.gov/gmd/obop/mlo/
                        name:  NOAA/ESRL/GMD Mauna Loa Website
                        description:  Website with information about the Mauna Loa Observatory
                        function:  (CI_OnLineFunctionCode)
                    hoursOfService:  7:30 - 5:00 UTC-10
                role:  (CI_RoleCode) pointOfContact
            instrument:  #Instrument1
            instrument:  #Instrument2
            instrument:  #Instrument3
            instrument:  #Instrument4
            instrument:  #Instrument5
            instrument:  #Instrument6