Earth System Research Laboratory Halocarbons and Other Atmospheric Trace Gases Chromatograph for Atmospheric Trace Species (CATS) Measurements


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        citation:  (CI_Citation)
            title:  Earth System Research Laboratory Halocarbons and Other Atmospheric Trace Gases Chromatograph for Atmospheric Trace Species (CATS) Measurements
            alternateTitle:  ESRL GMD HATS CATS
            date:  (CI_Date)
                date:  2017-11
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                date:  1998-06-01
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                  Anchor:  DOI doi:10.7289/V5X0659V
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                code:  NCEI DSI 3269_02
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                code:  gov.noaa.ncdc:C01556
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                individualName:  Dutton, Geoffrey
                organisationName:  DOC/NOAA/ESRL/GMD > Global Monitoring Division, Earth System Research Laboratory, NOAA, U.S. Department of Commerce
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                individualName:  Dutton, Geoffrey
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                individualName:  Elkins, James
                organisationName:  DOC/NOAA/ESRL/GMD > Global Monitoring Division, Earth System Research Laboratory, NOAA, U.S. Department of Commerce
                positionName:  Group Chief, Halocarbons and other Atmospheric Trace Species Group
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                        electronicMailAddress:  james.w.elkins@noaa.gov
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                positionName:  Group Chief, Halocarbons and other Atmospheric Trace Species Group
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                individualName:  Hall, Bradley
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        abstract:  The Halocarbons and other Atmospheric Trace Species (HATS) group aims to quantify the distributions and magnitudes of sources and sinks for atmospheric nitrous oxide and halogen containing compounds. They utilize numerous types of platforms, including ground-based stations, towers, ships, aircraft, and balloons to accomplish their mission. HATS also measures chlorofluorocarbons (CFCs) at its various measurement sites. CFCs are nontoxic, nonflammable chemicals that contains atoms of carbon, chlorine, and fluorine. They are classified as halocarbons which are compounds that contain carbon and halogen atoms. CFCs were used as solvents, refrigerants, and aerosol sprays. While inert in the lower atmosphere, CFCs decompose in the upper atmosphere (stratosphere) with some of the released chlorine becoming active in destroying ozone in the stratosphere. Over time this lead to the creation of the "Ozone Hole" over the Antarctic. Monitoring the amounts of CFCs and other trace gases is important to tracking the growth or recovery of the Ozone Hole. The Chromatograph for Atmospheric Trace Species (CATS) instruments have been in operation at the NOAA baseline observatories (Barrow, AK, Mauna Loa, HI, American Samoa, and South Pole, Antarctica) since 1999. The CATS instrument measure nitrous oxide (N2O), sulfur hexafluoride (SF6), chlorofluorocarbons (CFC-12 (CCl2F2), CFC-11 (CCl3F), and CFC-113 (CCl2F-CClF2)), Halon-1211 (CBrClF2), methyl chloroform (CH3CCl3), and carbon tetrachloride (CCl4). The CATS gas chromatographs are custom built instruments that contain separation columns, flow controllers, an air selection valve, and an electron capture detector; all used for making measurements. Through the Big Earth Data Initiative (BEDI), ESRL/GMD has taken their data collection and converted files into NetCDF-4, a self-describing format.
        purpose:  The general mission of the Halocarbons and other Atmospheric Trace Species group is to quantify the distributions and magnitudes of sources and sinks for atmospheric nitrous oxide (N2O) and halogen containing compounds.
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            fileDescription:  Chromatograph for Atmospheric Trace Species (CATS) Instrument
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            keyword:  Earth Science > Atmosphere > Atmospheric Chemistry > Nitrogen Compounds > Nitrous Oxide
            keyword:  Earth Science > Atmosphere > Atmospheric Chemistry > Halocarbons And Halogens > Chlorofluorocarbons
            keyword:  Earth Science > Atmosphere > Atmospheric Chemistry > Halocarbons And Halogens > Halons
            keyword:  Earth Science > Atmosphere > Atmospheric Chemistry > Halocarbons And Halogens > Carbon Tetrachloride
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            keyword:  EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC CHEMISTRY > HALOCARBONS AND HALOGENS > METHYL CHLOROFORM
            keyword:  Ozone Depletion
            keyword:  Montreal Protocal
            keyword:  Halocarbons
            keyword:  Atmospheric - Composition - Nitrous Oxide and Greenhouse Gases (including CFCs, halons, and SF6)
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                    date:  2018
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                            name:  NOAA Environmental Data Management Wiki: MD Keywords
                            description:  Instructions and examples for ISO keywords.
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            otherConstraints:  Cite as: Dutton, Geoffrey; James Elkins II, Bradley Hall, and NOAA ESRL (2017): Earth System Research Laboratory Halocarbons and Other Atmospheric Trace Gases Chromatograph for Atmospheric Trace Species (CATS) Measurements, Version 1. [indicate subset used]. NOAA National Centers for Environmental Information. doi:10.7289/V5X0659V [access date].
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            otherConstraints:  The information contained herein is provided as a public service, with the understanding that the NOAA/ESRL Global Monitoring Divison makes no warranties, either expressed or implied, concerning the accuracy, completeness, reliability, or suitability of the information.
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            accessConstraints:  (MD_RestrictionCode) otherRestrictions
            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.
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                title:  Improving measurements of SF6 for the study of atmospheric transport and emissions
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                    date:  2011-11-14
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                    code:  doi:10.5194/amt-4-2441-2011
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                            name:  Improving measurements of SF6 for the study of atmospheric transport and emissions
                            description:  PDF of Hall et al. 2011
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                title:  Behavior of trace gas mixing ratios on a very tall tower in North Carolina
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                    date:  1997-04-20
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                    code:  Paper number 97JD00130
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                            name:  Behavior of trace gas mixing ratios on a very tall tower in North Carolina
                            description:  PDF from Wiley Online Library
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                title:  Recent trends in the variability of halogenated trace gases over the United States
                date:  (CI_Date)
                    date:  1998-10-01
                    dateType:  (CI_DateTypeCode) publication
                edition:  103
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                    code:  DOI: 10.1029/98JD01879
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                            name:  Recent trends in the variability of halogenated trace gases over the United States
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                title:  System and Performance Audit of Surface Ozone, Carbon Monoxide, Methane and Nitrous Oxide at the Global GAW Station Barrow, USA, March 2008, WCC-Empa Report 08/1
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                    date:  2008-03
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                            linkage: https://www.empa.ch/documents/56101/250799/Barrow08.pdf/4b30e4d5-3e3a-40bb-b11c-2f2a7921f366
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                            name:  System and Performance Audit of Surface Ozone, Carbon Monoxide, Methane and Nitrous Oxide at the Global GAW Station Barrow, USA, March 2008, WCC-Empa Report 08/1
                            description:  PDF of WCC-Empa Report
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        language:  eng; USA
        topicCategory:  (MD_TopicCategoryCode) climatologyMeteorologyAtmosphere
        environmentDescription:  Initial peak integration of chromatograms is conducted on a Linux computer using GCwerks software. Python scripts perform initial quality control and data consolidation. Finally, quality control and processing are completed on an Apple computer using custom software developed in Igor Pro.
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                    description:  ground condition
                    beginPosition:  1998-06-01
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                    timeInterval:  1
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                        electronicMailAddress:  ncei.orders@noaa.gov
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                        city:  Asheville
                        administrativeArea:  NC
                        postalCode:  28801-5001
                        country:  USA
                        electronicMailAddress:  ncei.orders@noaa.gov
                    onlineResource:  (CI_OnlineResource)
                        linkage: https://www.ncei.noaa.gov
                        protocol:  HTTPS
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                role:  (CI_RoleCode) distributor
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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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                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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                    name:  ESRL/GMD HATS CATS Data Website
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    dataQualityInfo:  (DQ_DataQuality)
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            processStep:  (LE_ProcessStep)
                description:  Typical data processing involves peak integration, calculating detector response and correcting for drift, applying calibrations, calculating mixing ratios. Quality control and data flagging may occur at any of these steps.
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                description:  ESRL GMD HATS CATS Program Measurements
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                    title:  Earth System Research Laboratory Halocarbons and Other Atmospheric Trace Gases Chromatograph for Atmospheric Trace Species (CATS) Measurements
                    date: (missing)
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                        organisationName:  DOC/NOAA/ESRL/GMD > Global Monitoring Division, Earth System Research Laboratory, NOAA, U.S. Department of Commerce
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                          TimePeriod:
                            beginPosition:  1998-06-01
                            endPosition:
                sourceStep:  ps001
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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.