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World Magnetic Model 2010
 (MI_Metadata)
    fileIdentifier:  gov.noaa.ngdc:WMM2010
    hierarchyLevel:  (MD_ScopeCode) model
    hierarchyLevelName:  Magnetic Grid
    contact:  (CI_ResponsibleParty)
        organisationName:  NOAA National Centers for Environmental Information
        contactInfo:  (CI_Contact)
            address:  (CI_Address)
                electronicMailAddress:  ncei.info@noaa.gov
            onlineResource:  (CI_OnlineResource)
                linkage: https://www.ncei.noaa.gov/contact
                name:  NCEI Contact Information
                description:  Information for contacts at NCEI.
                function:  (CI_OnLineFunctionCode) information
        role:  (CI_RoleCode) pointOfContact
    dateStamp:  2020-05-14
    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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    spatialRepresentationInfo:  (MD_GridSpatialRepresentation)
        numberOfDimensions:  2
        cellGeometry:  (MD_CellGeometryCode) point
        transformationParameterAvailability:  true
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    referenceSystemInfo:  (MD_ReferenceSystem)
        referenceSystemIdentifier:  (RS_Identifier)
            authority:  (CI_Citation)
                title:  World Geodetic System 1984
                alternateTitle:  WGS 84
                date:  (CI_Date)
                    date:  2007-08-27
                    dateType:  (CI_DateTypeCode) revision
                citedResponsibleParty:  (CI_ResponsibleParty)
                    organisationName: (withheld)
                    contactInfo:  (CI_Contact)
                        onlineResource:  (CI_OnlineResource)
                            linkage: https://epsg.org/crs_4326/WGS-84.html
                            name:  WGS 84
                            description:  GML of World Geodetic System 1984 coordinate reference system.
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                    role:  (CI_RoleCode) resourceProvider
                citedResponsibleParty:  (CI_ResponsibleParty)
                    organisationName:  European Petroleum Survey Group
                    contactInfo:  (CI_Contact)
                        onlineResource:  (CI_OnlineResource)
                            linkage: https://epsg.org/home.html
                            name:  European Petroleum Survey Group Geodetic Parameter Registry
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                            function:  (CI_OnLineFunctionCode) search
                    role:  (CI_RoleCode) publisher
            code:  urn:ogc:def:crs:EPSG::4326
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    identificationInfo:  (MD_DataIdentification)
        citation:  (CI_Citation)
            title:  World Magnetic Model 2010
            date:  (CI_Date)
                date:  2009-12-01
                dateType:  (CI_DateTypeCode) publication
            edition:  version 3
            editionDate:  2012-04-26
            identifier:  (MD_Identifier)
                authority:  (CI_Citation)
                    title:  NOAA National Centers for Environmental Information
                    date: (inapplicable)
                code:  NCEI Metadata ID: gov.noaa.ngdc:WMM2010
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                organisationName:  NOAA National Centers for Environmental Information
                role:  (CI_RoleCode) publisher
            citedResponsibleParty:  (CI_ResponsibleParty)
                positionName:  NCEI Geomagnetic Modeling Team
                role:  (CI_RoleCode) author
            presentationForm:  (CI_PresentationFormCode) mapDigital
        abstract:  The World Magnetic Model is the standard model used by the U.S. Department of Defense, the U.K. Ministry of Defence, the North Atlantic Treaty Organization (NATO) and the International Hydrographic Organization (IHO), for navigation, attitude and heading referencing systems using the geomagnetic field. It is also used widely in civilian navigation and heading systems. The model, associated software, and documentation are distributed by NGDC on behalf of NGA. The model is produced at 5-year intervals, with the current model expiring on December 31, 2014.
        status:  (MD_ProgressCode) completed
        status:  (MD_ProgressCode) historicalArchive
        pointOfContact:  (CI_ResponsibleParty)
            organisationName:  NOAA National Centers for Environmental Information
            contactInfo:  (CI_Contact)
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                    electronicMailAddress:  ncei.info@noaa.gov
                onlineResource:  (CI_OnlineResource)
                    linkage: https://www.ncei.noaa.gov/contact
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                    description:  Information for contacts at NCEI.
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            organisationName:  NOAA National Centers for Environmental Information
            positionName:  NCEI Geomagnetic Modeling Team
            contactInfo:  (CI_Contact)
                address:  (CI_Address)
                    electronicMailAddress:  geomag.models@noaa.gov
            role:  (CI_RoleCode) pointOfContact
        resourceMaintenance:  (MD_MaintenanceInformation)
            maintenanceAndUpdateFrequency:  (MD_MaintenanceFrequencyCode) asNeeded
        graphicOverview:  (MD_BrowseGraphic)
            fileName: https://www.ngdc.noaa.gov/geomag/WMM/data/WMM2010/WMM2010_D_MERC.pdf
            fileDescription:  Declination contour map in mercator projection
            fileType:  PDF
        descriptiveKeywords:  (MD_Keywords)
            keyword:  Earth Science > Solid Earth > Geomagnetism > Magnetic Field
            keyword:  Earth Science > Solid Earth > Geomagnetism > Magnetic Intensity
            keyword:  Earth Science > Solid Earth > Geomagnetism > Magnetic Declination
            keyword:  Earth Science > Solid Earth > Geomagnetism > Magnetic Inclination
            type:  (MD_KeywordTypeCode) theme
            thesaurusName:  (CI_Citation)
                title:  Global Change Master Directory (GCMD) Science Keywords
                date:  (CI_Date)
                    date:  2020-01-09
                    dateType:  (CI_DateTypeCode) publication
                edition:  9.1
                citedResponsibleParty:  (CI_ResponsibleParty)
                    organisationName:  NASA Goddard Space Flight Center, Earth Science Data and Information System
                    contactInfo:  (CI_Contact)
                        onlineResource:  (CI_OnlineResource)
                            linkage: https://www.earthdata.nasa.gov/learn/find-data/idn/gcmd-keywords
                            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) custodian
        descriptiveKeywords:  (MD_Keywords)
            keyword:  Geographic Region > Global
            type:  (MD_KeywordTypeCode) place
            thesaurusName:  (CI_Citation)
                title:  Global Change Master Directory (GCMD) Location Keywords
                date:  (CI_Date)
                    date:  2020-01-09
                    dateType:  (CI_DateTypeCode) publication
                edition:  9.1
                citedResponsibleParty:  (CI_ResponsibleParty)
                    organisationName:  NASA Goddard Space Flight Center, Earth Science Data and Information System
                    contactInfo:  (CI_Contact)
                        onlineResource:  (CI_OnlineResource)
                            linkage: https://www.earthdata.nasa.gov/learn/find-data/idn/gcmd-keywords
                            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) custodian
        descriptiveKeywords:  (MD_Keywords)
            keyword:  DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
            keyword:  DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
            type:  (MD_KeywordTypeCode) dataCentre
            thesaurusName:  (CI_Citation)
                title:  Global Change Master Directory (GCMD) Data Center Keywords
                date:  (CI_Date)
                    date:  2020-01-09
                    dateType:  (CI_DateTypeCode) publication
                edition:  9.1
                citedResponsibleParty:  (CI_ResponsibleParty)
                    organisationName:  NASA Goddard Space Flight Center, Earth Science Data and Information System
                    contactInfo:  (CI_Contact)
                        onlineResource:  (CI_OnlineResource)
                            linkage: https://www.earthdata.nasa.gov/learn/find-data/idn/gcmd-keywords
                            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) custodian
        resourceConstraints:  (MD_LegalConstraints)
            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.
        resourceConstraints:  (MD_LegalConstraints)
            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.
        resourceConstraints:  (MD_Constraints)
            useLimitation:  Produced by the NOAA National Centers for Environmental Information. Not subject to copyright protection within the United States.
        resourceConstraints:  (MD_LegalConstraints)
            useLimitation:  (MD_RestrictionCode) otherRestrictions
            otherConstraints:  Cite as: NCEI Geomagnetic Modeling Team. 2009: World Magnetic Model 2010. version 3. NOAA National Centers for Environmental Information. Accessed [date].
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        language:  eng; USA
        topicCategory:  (MD_TopicCategoryCode) geoscientificInformation
        extent:  (EX_Extent)
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                westBoundLongitude:  -180
                eastBoundLongitude:  180
                southBoundLatitude:  -90
                northBoundLatitude:  90
            temporalElement:  (EX_TemporalExtent)
                extent:
                  TimePeriod:
                    beginPosition:  2000-01-01
                    endPosition:  2014-12-31
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    contentInfo:  (MI_CoverageDescription)
        attributeDescription:
          RecordType:  Grid Cell
        contentType:  (MD_CoverageContentTypeCode) physicalMeasurement
        dimension:  (MD_Band)
            descriptor:  Northerly Intensity
            maxValue:
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                identifier:  degree
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    distributionInfo:  (MD_Distribution)
        distributor:  (MD_Distributor)
            distributorContact:  (CI_ResponsibleParty)
                organisationName:  NOAA National Centers for Environmental Information
                contactInfo:  (CI_Contact)
                    address:  (CI_Address)
                        electronicMailAddress:  ncei.info@noaa.gov
                    onlineResource:  (CI_OnlineResource)
                        linkage: https://www.ncei.noaa.gov/contact
                        name:  NCEI Contact Information
                        description:  Information for contacts at NCEI.
                        function:  (CI_OnLineFunctionCode) information
                role:  (CI_RoleCode) distributor
            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:  WMM2010_Windows.zip
                version:  1
                specification:  World Magnetic Model (WMM2010) with the new C software and executables for Windows environment.
            distributorFormat:  (MD_Format)
                name:  WMM2010_Linux.tar.zip
                version:  1
                specification:  World Magnetic Model (WMM2010) with new C software and executables for Linux environment.
            distributorFormat:  (MD_Format)
                name:  WMM2010LegacyFortran.zip
                version:  1
                specification:  World Magnetic Model (WMM2010) with Fortran source code and executables for Windows and Linux environments.
            distributorFormat:  (MD_Format)
                name:  WMM2010LegacyC.zip
                version:  1
                specification:  World Magnetic Model (WMM2010) with C source code and executables for Windows and Linux environments.
            distributorFormat:  (MD_Format)
                name:  WMM2010GUI.zip
                version:  1
                specification:  World Magnetic Model (WMM2010) with Stand-alone Graphical User Interface (GUI) for Windows and C source code.
            distributorTransferOptions:  (MD_DigitalTransferOptions)
                onLine:  (CI_OnlineResource)
                    linkage: https://www.ncei.noaa.gov/metadata/geoportal/rest/metadata/item/gov.noaa.ngdc:WMM2010/html
                    protocol:  HTTPS
                    name:  Metadata Landing Page
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                onLine:  (CI_OnlineResource)
                    linkage: https://www.ngdc.noaa.gov/geomag/WMM/DoDWMM.shtml
                    protocol:  HTTPS
                    name:  WMM Home Page
                    function:  (CI_OnLineFunctionCode) information
            distributorTransferOptions:  (MD_DigitalTransferOptions)
                onLine:  (CI_OnlineResource)
                    linkage: https://www.ngdc.noaa.gov/wmmsurvey/magneticSurvey.do?plang=w
                    name:  WMM2010_Windows.zip
                    description:  World Magnetic Model (WMM2010) with the new C software and executables for Windows environment.
                    function:  (CI_OnLineFunctionCode) download
            distributorTransferOptions:  (MD_DigitalTransferOptions)
                onLine:  (CI_OnlineResource)
                    linkage: https://www.ngdc.noaa.gov/wmmsurvey/magneticSurvey.do?plang=l
                    name:  WMM2010_Linux.tar.zip
                    description:  World Magnetic Model (WMM2010) with new C software and executables for Linux environment.
                    function:  (CI_OnLineFunctionCode) download
            distributorTransferOptions:  (MD_DigitalTransferOptions)
                onLine:  (CI_OnlineResource)
                    linkage: https://www.ngdc.noaa.gov/wmmsurvey/magneticSurvey.do?plang=f
                    name:  WMM2010LegacyFortran.zip
                    description:  World Magnetic Model (WMM2010) with Fortran source code and executables for Windows and Linux environments.
                    function:  (CI_OnLineFunctionCode) download
            distributorTransferOptions:  (MD_DigitalTransferOptions)
                onLine:  (CI_OnlineResource)
                    linkage: https://www.ngdc.noaa.gov/wmmsurvey/magneticSurvey.do?plang=c
                    name:  WMM2010LegacyC.zip
                    description:  World Magnetic Model (WMM2010) with C source code and executables for Windows and Linux environments.
                    function:  (CI_OnLineFunctionCode) download
            distributorTransferOptions:  (MD_DigitalTransferOptions)
                onLine:  (CI_OnlineResource)
                    linkage: https://www.ngdc.noaa.gov/wmmsurvey/magneticSurvey.do?plang=g
                    name:  WMM2010GUI.zip
                    description:  World Magnetic Model (WMM2010) with Stand-alone Graphical User Interface (GUI) for Windows and C source code.
                    function:  (CI_OnLineFunctionCode) download
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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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    dataQualityInfo:  (DQ_DataQuality)
        scope:  (DQ_Scope)
            level:  (MD_ScopeCode) dataset
        lineage:  (LI_Lineage)
            processStep:  (LE_ProcessStep)
                description:  Measurements during daytime and during periods of strong solar activity are contaminated by external current systems, which are difficult to accurately model. Therefore, only nighttime data during magnetically quiet periods were used in generating the WMM coefficients.
                processor:  (CI_ResponsibleParty)
                    organisationName:  NOAA National Centers for Environmental Information
                    positionName:  NCEI Geomagnetic Modeling Team
                    contactInfo:  (CI_Contact)
                        address:  (CI_Address)
                            electronicMailAddress:  geomag.models@noaa.gov
                    role:  (CI_RoleCode) pointOfContact
                processingInformation:  (LE_Processing)
                    identifier:  (MD_Identifier)
                        code:  Processing steps were carried out collectively by the developers of the model. These developers are listed as authors of the associated paper "The US/UK Magnetic Model 2010-2015" which can be found at https://www.ngdc.noaa.gov/geomag/WMM/data/WMM2010/WMM2010_Report.pdf
                    algorithm:  (LE_Algorithm)
                        citation:  (CI_Citation)
                            title:  The US/UK World Magnetic Model for 2010-2015
                            date:  (CI_Date)
                                date:  2009-12-01
                                dateType:  (CI_DateTypeCode) publication
                            citedResponsibleParty:  (CI_ResponsibleParty)
                                contactInfo:  (CI_Contact)
                                    onlineResource:  (CI_OnlineResource)
                                        linkage: https://ngdc.noaa.gov/geomag/WMM/data/WMM2010/WMM2010_Report.pdf
                                role:  (CI_RoleCode) originator
                        description:  Refer to technical report, "The US/UK Magnetic Model 2010-2015", for description of gridding algorithms.
            processStep:  (LE_ProcessStep)
                description:  Some contributions to the measured magnetic field, such as the diamagnetic effect of ionospheric plasma (Lühr et al, 2003) or motional induction by tidal ocean currents (Kuvshinov and Olsen, 2005; Maus, 2007), can be accurately modeled and were corrected for prior to the generation of the WMM main field coefficients.
                processor:  (CI_ResponsibleParty)
                    organisationName:  NOAA National Centers for Environmental Information
                    positionName:  NCEI Geomagnetic Modeling Team
                    contactInfo:  (CI_Contact)
                        address:  (CI_Address)
                            electronicMailAddress:  geomag.models@noaa.gov
                    role:  (CI_RoleCode) pointOfContact
                processingInformation:  (LE_Processing)
                    identifier:  (MD_Identifier)
                        code:  Processing steps were carried out collectively by the developers of the model. These developers are listed as authors of the associated paper "The US/UK Magnetic Model 2010-2015" which can be found at https://www.ngdc.noaa.gov/geomag/WMM/data/WMM2010/WMM2010_Report.pdf
                    algorithm:  (LE_Algorithm)
                        citation:  (CI_Citation)
                            title:  The US/UK World Magnetic Model for 2010-2015
                            date:  (CI_Date)
                                date:  2009-12-01
                                dateType:  (CI_DateTypeCode) publication
                            citedResponsibleParty:  (CI_ResponsibleParty)
                                contactInfo:  (CI_Contact)
                                    onlineResource:  (CI_OnlineResource)
                                        linkage: https://ngdc.noaa.gov/geomag/WMM/data/WMM2010/WMM2010_Report.pdf
                                role:  (CI_RoleCode) originator
                        description:  Refer to technical report, "The US/UK Magnetic Model 2010-2015", for description of gridding algorithms.
            processStep:  (LE_ProcessStep)
                description:  To account for the contributions that have not been removed in the previous steps, an extended set of model parameters is co-estimated with the WMM model coefficients. These account for smaller-wavelength internal magnetic field contributions (spherical harmonic degree larger than 12), second time derivatives (secular acceleration) and contributions from currents external to the Earth. The set of WMM coefficients plus the extended model parameters is called a parent model of the WMM. Two different parent models were produced, reflecting different modeling strategies employed by NGDC for the main field model and BGS for the secular variation model.
                processor:  (CI_ResponsibleParty)
                    organisationName:  NOAA National Centers for Environmental Information
                    positionName:  NCEI Geomagnetic Modeling Team
                    contactInfo:  (CI_Contact)
                        address:  (CI_Address)
                            electronicMailAddress:  geomag.models@noaa.gov
                    role:  (CI_RoleCode) pointOfContact
                processingInformation:  (LE_Processing)
                    identifier:  (MD_Identifier)
                        code:  Processing steps were carried out collectively by the developers of the model. These developers are listed as authors of the associated paper "The US/UK Magnetic Model 2010-2015" which can be found at https://www.ngdc.noaa.gov/geomag/WMM/data/WMM2010/WMM2010_Report.pdf
                    algorithm:  (LE_Algorithm)
                        citation:  (CI_Citation)
                            title:  The US/UK World Magnetic Model for 2010-2015
                            date:  (CI_Date)
                                date:  2009-12-01
                                dateType:  (CI_DateTypeCode) publication
                            citedResponsibleParty:  (CI_ResponsibleParty)
                                contactInfo:  (CI_Contact)
                                    onlineResource:  (CI_OnlineResource)
                                        linkage: https://ngdc.noaa.gov/geomag/WMM/data/WMM2010/WMM2010_Report.pdf
                                role:  (CI_RoleCode) originator
                        description:  Refer to technical report, "The US/UK Magnetic Model 2010-2015", for description of gridding algorithms.
            source:  (LI_Source)
                description:  Challenging Minisatellite Payload (CHAMP) is a German satellite mission dedicated to improving gravity and magnetic field models of the Earth.
                sourceCitation:  (CI_Citation)
                    title:  CHAMP Satellite Data
                    date:  (CI_Date)
                        date:  2009-12-31
                        dateType:  (CI_DateTypeCode) publication
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName:  GFZ German Research Centre for Geosciences
                        contactInfo:  (CI_Contact)
                            onlineResource:  (CI_OnlineResource)
                                linkage: http://op.gfz-potsdam.de/champ/
                                name:  The CHAMP Mission
                                description:  Webpage provided details on equipment, mission, as well as results and publications associated with the CHAMP mission.
                                function:  (CI_OnLineFunctionCode) information
                        role:  (CI_RoleCode) originator
                sourceExtent:  (EX_Extent)
                    geographicElement:  (EX_GeographicBoundingBox)
                        westBoundLongitude:  -180
                        eastBoundLongitude:  180
                        southBoundLatitude:  -90
                        northBoundLatitude:  90
                    temporalElement:  (EX_TemporalExtent)
                        extent:
                          TimePeriod:
                            beginPosition:  2000-07-15
                            endPosition:  2010-09-19
            source:  (LI_Source)
                description:  The Danish satellite Orsted is a dedicated satellite for geomagnetic field modeling.
                sourceCitation:  (CI_Citation)
                    title:  ORSTED Satellite Data
                    date:  (CI_Date)
                        date:  2009-12-31
                        dateType:  (CI_DateTypeCode) publication
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName:  Danish Meteorological Institute
                        contactInfo:  (CI_Contact)
                            onlineResource:  (CI_OnlineResource)
                                linkage: http://www.space.dtu.dk/english/Research/Projects/Oersted
                                name:  The Orsted Satellite Project
                                description:  Webpage provided details on equipment, mission, as well as results and publications associated with the Orsted satellite mission.
                                function:  (CI_OnLineFunctionCode) information
                        role:  (CI_RoleCode) originator
                sourceExtent:  (EX_Extent)
                    geographicElement:  (EX_GeographicBoundingBox)
                        westBoundLongitude:  -180
                        eastBoundLongitude:  180
                        southBoundLatitude:  -90
                        northBoundLatitude:  90
                    temporalElement:  (EX_TemporalExtent)
                        extent:
                          TimePeriod:
                            beginPosition:  1999-02-23
                            endPosition:  2009-11-30
            source:  (LI_Source)
                description:  Magnetics information that is collected at permanent surface magnetic observatories spread across the globe.
                sourceCitation:  (CI_Citation)
                    title:  INTERMAGNET Observatory Data
                    date:  (CI_Date)
                        date:  2009-12-31
                        dateType:  (CI_DateTypeCode) publication
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName:  Internation Real-time Magnetic Observatory Network
                        contactInfo:  (CI_Contact)
                            onlineResource:  (CI_OnlineResource)
                                linkage: http://www.intermagnet.org
                                name:  INTERMAGNET Program
                                description:  Website provides information on participating institutions, observatory locations, and publications associated with the network of observatories.
                                function:  (CI_OnLineFunctionCode) information
                        role:  (CI_RoleCode) originator
                sourceExtent:  (EX_Extent)
                    geographicElement:  (EX_GeographicBoundingBox)
                        westBoundLongitude:  -177.383
                        eastBoundLongitude:  172.35
                        southBoundLatitude:  -77.85
                        northBoundLatitude:  82.5
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    metadataMaintenance:  (MD_MaintenanceInformation)
        maintenanceAndUpdateFrequency:  (MD_MaintenanceFrequencyCode) asNeeded
        maintenanceNote:  Modified for compliance to NCEI Template v1.2.