United States Historical Climatology Network (USHCN), Version 2.5


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                deliveryPoint:  Veach-Baley Federal Building, Room 468
                city:  Asheville
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                postalCode:  28801-5001
                country:  USA
                electronicMailAddress:  ncei.orders@noaa.gov
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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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    dateStamp:  2018-11-05
    metadataStandardName:  ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
    metadataStandardVersion:  ISO 19115-2:2009(E)
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    identificationInfo:  (MD_DataIdentification)
        citation:  (CI_Citation)
            title:  United States Historical Climatology Network (USHCN), Version 2.5
            alternateTitle:  USHCN v2.5
            date:  (CI_Date)
                date:  2012-10-01
                dateType:  (CI_DateTypeCode) publication
            edition:  Version 2.5
            identifier:  (MD_Identifier)
                code:
                  Anchor:  DOI doi:10.7289/V56W98B4
            identifier:  (MD_Identifier)
                code:  NCEI DSI 6900_04
            identifier:  (MD_Identifier)
                code:  gov.noaa.ncdc:C00895
            citedResponsibleParty:  (CI_ResponsibleParty)
                organisationName:  DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
                role:  (CI_RoleCode) publisher
            citedResponsibleParty:  (CI_ResponsibleParty)
                individualName:  M.J. Menne
                organisationName:  DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
                role:  (CI_RoleCode) principalInvestigator
            citedResponsibleParty:  (CI_ResponsibleParty)
                individualName:  M.J. Menne
                organisationName:  DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
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                individualName:  C.N. Williams,
                organisationName:  DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
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                individualName:  C.N. Williams,
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        abstract:  The U.S. Historical Climatology Network Monthly Data, Version 2.5 consists of precipitation and temperature data "corrected" for changes in station location, instrumentation, and observing practices. The vast majority of stations are from the NOAA Cooperative Observer Program (COOP) Network. Stations have been selected according to coverage, length of data record and completeness, and historical stability. Data includes sets of Maximum, Minimum and Average Temperature and Precipitation data that are either (1) raw (non-adjusted though flagged for possible quality issues), (2) adjusted due to time of observation bias (TOB) or (3) put through the Pairwise Homogenization Algorithm (PHA). The data also is archived with station information and source code for reading the data.
        purpose:  Data are adjusted to reflect a more accurate climate record, accounting for changes in instrumentation, station changes, and observation practices.
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                    deliveryPoint:  Veach-Baley Federal Building, Room 468
                    city:  Asheville
                    administrativeArea:  NC
                    postalCode:  28801-5001
                    country:  USA
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            keyword:  Earth Science > Atmosphere > Atmospheric Temperature > Surface Temperature > Maximum/Minimum Temperature
            keyword:  Earth Science > Atmosphere > Atmospheric Temperature > Surface Temperature > Air Temperature
            keyword:  Earth Science > Atmosphere > Precipitation > Precipitation Amount
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                title:  Global Change Master Directory (GCMD) Science Keywords
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                    date:  2018
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                    organisationName:  Global Change Data Center, Science and Exploration Directorate, Goddard Space Flight Center (GSFC) National Aeronautics and Space Administration (NASA)
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            keyword:  Atmospheric - Surface - Air Temperature
            keyword:  Atmospheric - Surface - Precipitation
            type:  (MD_KeywordTypeCode) theme
            thesaurusName:  (CI_Citation)
                title:  Global Climate Observing System (GCOS) Essential Climate Variables (ECVs)
                date:  (CI_Date)
                    date:  2017
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                edition:  Release 2017
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                    organisationName:  World Meteorological Organization, United Nations
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            keyword:  Continent > North America > United States Of America
            type:  (MD_KeywordTypeCode) place
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                title:  Global Change Master Directory (GCMD) Location Keywords
                date:  (CI_Date)
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                            description:  The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords.
                            function:  (CI_OnLineFunctionCode) information
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            keyword:  Vertical Location > Land Surface
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                title:  Global Change Master Directory (GCMD) Location Keywords
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                            description:  The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords.
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            keyword:  HCN > Historical Climatology Network
            type:  (MD_KeywordTypeCode) project
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                title:  Global Change Master Directory (GCMD) Project Keywords
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                            linkage: https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords
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                            applicationProfile:  Web Browser
                            name:  Global Change Master Directory (GCMD) Keywords
                            description:  The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords.
                            function:  (CI_OnLineFunctionCode) information
                    role:  (CI_RoleCode) publisher
        descriptiveKeywords:  (MD_Keywords)
            keyword:  Thermometers
            keyword:  Rain Gauges
            type:  (MD_KeywordTypeCode) instrument
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                title:  Global Change Master Directory (GCMD) Instrument Keywords
                date:  (CI_Date)
                    date:  2018
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                            linkage: https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords
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                            name:  Global Change Master Directory (GCMD) Keywords
                            description:  The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords.
                            function:  (CI_OnLineFunctionCode) information
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            keyword:  Meteorological Stations
            type:  (MD_KeywordTypeCode) platform
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                title:  Global Change Master Directory (GCMD) Platform Keywords
                date:  (CI_Date)
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                            name:  Global Change Master Directory (GCMD) Keywords
                            description:  The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords.
                            function:  (CI_OnLineFunctionCode) information
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            keyword:  Weekly - < Monthly
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                title:  Global Change Master Directory (GCMD) Temporal Data Resolution Keywords
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                            description:  The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords.
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            keyword:  Point Resolution
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                title:  Global Change Master Directory (GCMD) Vertical Data Resolution Keywords
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                    date:  2018
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                            linkage: https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords
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                            description:  The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords.
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                title:  Global Change Master Directory (GCMD) Horizontal Data Resolution Keywords
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                            name:  Global Change Master Directory (GCMD) Keywords
                            description:  The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords.
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            keyword:  DOC/NOAA/NESDIS/NCDC > National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce
            keyword:  DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
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                title:  Global Change Master Directory (GCMD) Data Center Keywords
                date:  (CI_Date)
                    date:  2018
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                            linkage: https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords
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                            name:  Global Change Master Directory (GCMD) Keywords
                            description:  The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords.
                            function:  (CI_OnLineFunctionCode) information
                    role:  (CI_RoleCode) publisher
        resourceConstraints:  (MD_LegalConstraints)
            useConstraints:  (MD_RestrictionCode) otherRestrictions
            otherConstraints:  Cite as: Menne, Matthew J.; Williams, Claude N. Jr. (2012): United States Historical Climatology Network (USHCN), Version 2.5.x.YYYYMMDD [indicate minor version and date of access]. NOAA National Centers for Environmental Information. doi: 10.7289/V56W98B4 [indicate access date]
        resourceConstraints:  (MD_LegalConstraints)
            useConstraints:  (MD_RestrictionCode) otherRestrictions
            otherConstraints:  Users of the data are also requested to cite the paper: Menne, M.J., C.N. Williams, and R.S. Vose, 2009: The United States Historical Climatology Network monthly temperature data, Version 2. Bulletin of the American Meteorological Society, 90, 993-1007.
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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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            useConstraints:  (MD_RestrictionCode) otherRestrictions
            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)
            aggregateDataSetName:  (CI_Citation)
                title:  The U.S. Historical Climatology Network Monthly Temperature Data, Version 2
                date:  (CI_Date)
                    date:  2009-07-01
                    dateType:  (CI_DateTypeCode) publication
                edition:  BAMS July 2009
                identifier:  (MD_Identifier)
                    code:  doi:10.1175/2008BAMS2613.1
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                    organisationName:  American Meteorological Society (AMS)
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                            linkage: https://doi.org/10.1175/2008BAMS2613.1
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                            name:  Science Paper
                            description:  Paper describing the Version 2 release of the dataset. Version 2 and 2.5 are very similar. See documentation for more information.
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                title:  United States Historical Climatology Network (USHCN), Version 2.0 (Superseded Version) Landing Page
                date:  (CI_Date)
                    date:  2012-10-01
                    dateType:  (CI_DateTypeCode) publication
                identifier:  (MD_Identifier)
                    code:  gov.noaa.ncdc:C00688
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                    organisationName:  DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
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                    contactInfo:  (CI_Contact)
                        onlineResource:  (CI_OnlineResource)
                            linkage: https://data.nodc.noaa.gov/cgi-bin/iso?id=gov.noaa.ncdc:C00688
                            protocol:  HTTPS
                            applicationProfile:  Web Browser
                            name:  United States Historical Climatology Network (USHCN), Version 2.0 (version superseded) Landing Page
                            description:  Superseded dataset landing page. This version of the data should not be used except in rare cases (e.g., when reproducing studies that used this earlier version).
                            function:  (CI_OnLineFunctionCode) information
                    role: (missing)
            associationType:  (DS_AssociationTypeCode) crossReference
            initiativeType:  (DS_InitiativeTypeCode) collection
        spatialRepresentationType:  (MD_SpatialRepresentationTypeCode) textTable
        language:  eng; USA
        topicCategory:  (MD_TopicCategoryCode) climatologyMeteorologyAtmosphere
        extent:  (EX_Extent)
            geographicElement:  (EX_GeographicBoundingBox)
                extentTypeCode:  1
                westBoundLongitude:  -125.0
                eastBoundLongitude:  -55.0
                southBoundLatitude:  23.0
                northBoundLatitude:  52.0
            temporalElement:  (EX_TemporalExtent)
                extent:
                  TimePeriod:
                    description:  ground condition
                    beginPosition:  1891-01-01
                    endPosition:
                    timeInterval:  1
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    distributionInfo:  (MD_Distribution)
        distributor:  (MD_Distributor)
            distributorContact:  (CI_ResponsibleParty)
                organisationName:  DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
                positionName:  Customer Engagement Branch
                contactInfo:  (CI_Contact)
                    phone:  (CI_Telephone)
                        voice:  1-828-271-4800
                        facsimile:  1-828-271-4876
                    address:  (CI_Address)
                        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)
                        linkage: https://www.ncei.noaa.gov
                        protocol:  HTTPS
                        applicationProfile:  Web Browser
                        name:  NOAA National Centers for Environmental Information (NCEI)
                        description:  NCEI home page with information, data access and contact information.
                        function:  (CI_OnLineFunctionCode) information
                    hoursOfService:  8:00 - 6:00 Eastern
                role:  (CI_RoleCode) distributor
            distributionOrderProcess:  (MD_StandardOrderProcess)
                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.
            distributorTransferOptions:  (MD_DigitalTransferOptions)
                transferSize: (missing)
                onLine:  (CI_OnlineResource)
                    linkage: https://doi.org/10.7289/V56W98B4
                    protocol:  HTTPS
                    applicationProfile:  Information
                    name:  NCEI landing page for this dataset.
                    description:  Dataset landing page with general information and access links for the dataset.
                    function:  (CI_OnLineFunctionCode) information
        distributor:  (MD_Distributor)
            distributorContact:  (CI_ResponsibleParty)
                organisationName:  DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
                positionName:  Customer Engagement Branch
                contactInfo:  (CI_Contact)
                    phone:  (CI_Telephone)
                        voice:  1-828-271-4800
                        facsimile:  1-828-271-4876
                    address:  (CI_Address)
                        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)
                        linkage: https://www.ncei.noaa.gov
                        protocol:  HTTPS
                        applicationProfile:  Web Browser
                        name:  NOAA National Centers for Environmental Information (NCEI)
                        description:  NCEI home page with information, data access and contact information.
                        function:  (CI_OnLineFunctionCode) information
                    hoursOfService:  8:00 - 6:00 Eastern
                role:  (CI_RoleCode) distributor
            distributionOrderProcess:  (MD_StandardOrderProcess)
                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.
            distributorFormat:  (MD_Format)
                name:  ASCII Text
                version: (missing)
            distributorTransferOptions:  (MD_DigitalTransferOptions)
                transferSize:
                  Real:  4
                onLine:  (CI_OnlineResource)
                    linkage: https://www.ncei.noaa.gov/data/us-historical-climatology-network/2.5/
                    protocol:  HTTPS
                    applicationProfile:  Download
                    name:  NCEI Direct Download
                    description:  Direct download for dataset files.
                    function:  (CI_OnLineFunctionCode) download
        distributor:  (MD_Distributor)
            distributorContact:  (CI_ResponsibleParty)
                organisationName:  DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
                positionName:  Customer Engagement Branch
                contactInfo:  (CI_Contact)
                    phone:  (CI_Telephone)
                        voice:  1-828-271-4800
                        facsimile:  1-828-271-4876
                    address:  (CI_Address)
                        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)
                        linkage: https://www.ncei.noaa.gov
                        protocol:  HTTPS
                        applicationProfile:  Web Browser
                        name:  NOAA National Centers for Environmental Information (NCEI)
                        description:  NCEI home page with information, data access and contact information.
                        function:  (CI_OnLineFunctionCode) information
                    hoursOfService:  8:00 - 6:00 Eastern
                role:  (CI_RoleCode) distributor
            distributionOrderProcess:  (MD_StandardOrderProcess)
                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.
            distributorFormat:  (MD_Format)
                name:  TXT
                version: (missing)
            distributorTransferOptions:  (MD_DigitalTransferOptions)
                transferSize: (missing)
                onLine:  (CI_OnlineResource)
                    linkage: https://www1.ncdc.noaa.gov/pub/data/ushcn/v2.5/readme.txt
                    protocol:  HTTPS
                    applicationProfile:  Information
                    name:  Dataset README
                    description:  Please refer to the README file for more information about the dataset.
                    function:  (CI_OnLineFunctionCode) information
        distributor:  (MD_Distributor)
            distributorContact:  (CI_ResponsibleParty)
                organisationName:  DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
                positionName:  Customer Engagement Branch
                contactInfo:  (CI_Contact)
                    phone:  (CI_Telephone)
                        voice:  1-828-271-4800
                        facsimile:  1-828-271-4876
                    address:  (CI_Address)
                        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)
                        linkage: https://www.ncei.noaa.gov
                        protocol:  HTTPS
                        applicationProfile:  Web Browser
                        name:  NOAA National Centers for Environmental Information (NCEI)
                        description:  NCEI home page with information, data access and contact information.
                        function:  (CI_OnLineFunctionCode) information
                    hoursOfService:  8:00 - 6:00 Eastern
                role:  (CI_RoleCode) distributor
            distributionOrderProcess:  (MD_StandardOrderProcess)
                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.
            distributorFormat:  (MD_Format)
                name:  TXT
                version: (missing)
            distributorTransferOptions:  (MD_DigitalTransferOptions)
                transferSize: (missing)
                onLine:  (CI_OnlineResource)
                    linkage: https://www1.ncdc.noaa.gov/pub/data/ushcn/v2.5/status.txt
                    protocol:  HTTPS
                    applicationProfile:  Information
                    name:  Dataset STATUS
                    description:  Please refer to STATUS document for the most up-to-date information about the dataset status.
                    function:  (CI_OnLineFunctionCode) information
        distributor:  (MD_Distributor)
            distributorContact:  (CI_ResponsibleParty)
                organisationName:  DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
                positionName:  Customer Engagement Branch
                contactInfo:  (CI_Contact)
                    phone:  (CI_Telephone)
                        voice:  1-828-271-4800
                        facsimile:  1-828-271-4876
                    address:  (CI_Address)
                        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)
                        linkage: https://www.ncei.noaa.gov
                        protocol:  HTTPS
                        applicationProfile:  Web Browser
                        name:  NOAA National Centers for Environmental Information (NCEI)
                        description:  NCEI home page with information, data access and contact information.
                        function:  (CI_OnLineFunctionCode) information
                    hoursOfService:  8:00 - 6:00 Eastern
                role:  (CI_RoleCode) distributor
            distributionOrderProcess:  (MD_StandardOrderProcess)
                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.
            distributorFormat:  (MD_Format)
                name:  TXT
                version: (missing)
            distributorTransferOptions:  (MD_DigitalTransferOptions)
                transferSize: (missing)
                onLine:  (CI_OnlineResource)
                    linkage: https://www.ncdc.noaa.gov/ushcn/introduction
                    protocol:  HTTPS
                    applicationProfile:  Information
                    name:  USHCN Web site
                    description:  Project page with dataset information.
                    function:  (CI_OnLineFunctionCode) information
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    dataQualityInfo:  (DQ_DataQuality)
        scope:  (DQ_Scope)
            level:  (MD_ScopeCode) dataset
            extent:  #boundingExtent
        lineage:  (LI_Lineage)
            statement:  This dataset replaced the V2 dataset in 2012. The version 2.5 processing steps are essentially the same as in version 2.0, but the version number change reflects modifications to the underlying database as well as coding changes to the pairwise homogenization algorithm (PHA) that improve its overall efficiency.
            processStep:  (LE_ProcessStep)
                description:  See documentation for more information about the development of the dataset.
                dateTime: (missing)
                processor:  (CI_ResponsibleParty)
                    organisationName: (missing)
                    role:  (CI_RoleCode) processor
                source:  sd001
            source:  (LE_Source)
                description:  USHCN data derives from the GHCN-M processing engine. Stations are still primarily part of the Cooperative (COOP) Network.
                sourceCitation:  (CI_Citation)
                    title:  Global Historical Climatology Network - Monthly (GHCN-M), Version 3
                    date: (missing)
                    identifier:  (MD_Identifier)
                        code:  gov.noaa.ncdc:C00314
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName:  DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
                        role:  (CI_RoleCode) custodian
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName: (missing)
                        contactInfo:  (CI_Contact)
                            onlineResource:  (CI_OnlineResource)
                                linkage: https://doi.org/10.7289/V5X34VDR
                                applicationProfile:  Web Browser
                                name:  Global Historical Climatology Network - Monthly (GHCN-M), Version 3
                                description:  Source dataset landing page with general information and access links for that dataset.
                                function:  (CI_OnLineFunctionCode) information
                        role: (missing)
                sourceExtent:  (EX_Extent)
                    temporalElement:  (EX_TemporalExtent)
                        extent:
                          TimePeriod:
                            beginPosition:  1891
                            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.