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Auroral Electrojet (AE, AL, AO, AU) - A Global Measure of Auroral Zone Magnetic Activity
 (MI_Metadata)
    fileIdentifier:  gov.noaa.ngdc.stp.indices:G00584
    language:  eng; USA
    characterSet:  (MD_CharacterSetCode) utf8
    hierarchyLevel:  (MD_ScopeCode) dataset
    contact:  Justin Mabie
    dateStamp:  2015-09-18
    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:  Auroral Electrojet (AE, AL, AO, AU) - A Global Measure of Auroral Zone Magnetic Activity
            date:  (CI_Date)
                date:  1976-01-01
                dateType:  (CI_DateTypeCode) publication
            edition:  First
            citedResponsibleParty:  NCEI (publisher)
            citedResponsibleParty:  (CI_ResponsibleParty)
                organisationName:  DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
                role:  (CI_RoleCode) publisher
            citedResponsibleParty:  (CI_ResponsibleParty)
                organisationName:  DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
                role:  (CI_RoleCode) originator
            citedResponsibleParty:  (CI_ResponsibleParty)
                positionName:  Citation URL
                contactInfo:  (CI_Contact)
                    onlineResource:  (CI_OnlineResource)
                        linkage: http://swdcwww.kugi.kyoto-u.ac.jp/aedir/index.html
                        protocol:  http
                        name:  WDC-C2 KYOTO AE index service
                        description:  Home page for the World Data Center for Geomagnetism with links to the data
                        function:  (CI_OnLineFunctionCode) information
                role: (inapplicable)
            citedResponsibleParty:  (CI_ResponsibleParty)
                positionName:  Citation URL
                contactInfo:  (CI_Contact)
                    onlineResource:  (CI_OnlineResource)
                        linkage: http://www.ngdc.noaa.gov/geomag
                        protocol:  http
                        name:  Auroral Electrojet Index (AE)
                        description:  Home page
                        function:  (CI_OnLineFunctionCode) information
                role: (inapplicable)
            series:  (CI_Series)
                name:  Upper Atmosphere Geophysics International Standard Serial Numbers (ISSN)
                issueIdentification:  'ISSN 0579-7144 UAG Upper Atmosphere Geophysics'
        abstract:  The AE index is derived from geomagnetic variations in the horizontal component observed at selected (10-13) observatories along the auroral zone in the northern hemisphere. To normalize the data a base value for each station is first calculated for each month by averaging all the data from the station on the five international quietest days. This base value is subtracted from each value of one-minute data obtained at the station during that month. Then among the data from all the stations at each given time (UT), the largest and smallest values are selected. The AU and AL indices are respectively defined by the largest and the smallest values so selected. The symbols, AU and AL, derive from the fact that these values form the upper and lower envelopes of the superposed plots of all the data from these stations as functions of UT. The difference, AU minus AL, defines the AE index, and the mean value of the AU and AL, i.e. (AU+AL)/2, defines the AO index. The term "AE indices" is usually used to represent these four indices (AU, AL, AE and AO). The AU and AL indices are intended to express the strongest current intensity of the eastward and westward auroral electrojets, respectively. The AE index represents the overall activity of the electrojets, and the AO index provides a measure of the equivalent zonal current.
        purpose:  Geomagnetic Research
        status:  (MD_ProgressCode) underDevelopment
        pointOfContact:  Justin Mabie
        resourceMaintenance:  (MD_MaintenanceInformation)
            maintenanceAndUpdateFrequency:  (MD_MaintenanceFrequencyCode) asNeeded
        descriptiveKeywords:  (MD_Keywords)
            keyword:  Earth Science > Solid Earth > Geomagnetism > Geomagnetic Indices
            keyword:  Earth Science > Sun-Earth Interactions > Ionosphere/Magnetosphere Dynamics > Aurorae
            keyword:  Earth Science > Sun-Earth Interactions > Ionosphere/Magnetosphere Dynamics > Geomagnetic Indices
            type:  (MD_KeywordTypeCode) theme
            thesaurusName:  (CI_Citation)
                title:  NASA/GCMD Earth Science Keywords
                date: (unknown)
        descriptiveKeywords:  WDS Project Keyword
        descriptiveKeywords:  (MD_Keywords)
            keyword:  High Latitude Magnetosphere
            keyword:  Magnetosphere (Other)
            type:  (MD_KeywordTypeCode) place
            thesaurusName:  (CI_Citation)
                title:  NASA/GCMD Earth Science Keywords
                date: (unknown)
        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) dataCenter
            thesaurusName:  (CI_Citation)
                title:  NASA/GCMD Data Center Keywords
                date:  (CI_Date)
                    date:  2015-03-01
                    dateType:  (CI_DateTypeCode) revision
                date:  (CI_Date)
                    date:  1995-04-24
                    dateType:  (CI_DateTypeCode) publication
                edition:  8.1
                citedResponsibleParty:  (CI_ResponsibleParty)
                    organisationName:  NASA
                    positionName:  GCMD User Support Office
                    contactInfo:  (CI_Contact)
                        address:  (CI_Address)
                            electronicMailAddress:  gcmduso@gcmd.gsfc.nasa.gov
                        onlineResource:  (CI_OnlineResource)
                            linkage: http://gcmd.nasa.gov/MailComments/MailComments.jsf?rcpt=gcmduso
                            name:  GCMD Feedback Form
                            description:  Have a Comment for the GCMD?
                            function:  (CI_OnLineFunctionCode) information
                    role:  (CI_RoleCode) publisher
                citedResponsibleParty:  GCMD Valids
        resourceConstraints:  (MD_Constraints)
            useLimitation:  While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.
        resourceConstraints:  (MD_LegalConstraints)
            useConstraints:  (MD_RestrictionCode) otherRestrictions
            otherConstraints:  Use Constraints: None
        resourceConstraints:  (MD_LegalConstraints)
            accessConstraints:  (MD_RestrictionCode) otherRestrictions
            otherConstraints:  Access Constraints: No Constraints
        language:  eng; USA
        topicCategory:  (MD_TopicCategoryCode) geoscientificInformation
        extent:  (EX_Extent)
            geographicElement:  (EX_GeographicBoundingBox)
                westBoundLongitude:  -180.00
                eastBoundLongitude:  180.00
                southBoundLatitude:  -90.00
                northBoundLatitude:  90.00
            temporalElement:  (EX_TemporalExtent)
                extent:
                  TimePeriod:
                    beginPosition:  1957-01-01
                    endPosition:
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    distributionInfo:  (MD_Distribution)
        distributionFormat:  (MD_Format)
            name:  ASCII
            version: (unknown)
        distributor:  (MD_Distributor)
            distributorContact:  Justin Mabie
            distributionOrderProcess:  (MD_StandardOrderProcess)
                fees:  None
                orderingInstructions:  Ordering Instructions: Data may be downloaded for no cost
        transferOptions:  (MD_DigitalTransferOptions)
            onLine:  (CI_OnlineResource)
                linkage:  ftp://ftp.ngdc.noaa.gov/STP/GEOMAGNETIC_DATA/INDICES/AURORAL_ELECTROJET
                protocol:  ftp
                name:  Geomagnetic Data/Indices/Auroral Electroject
                description:  ftp site
                function:  (CI_OnLineFunctionCode) download
            onLine:  (CI_OnlineResource)
                linkage: http://swdcwww.kugi.kyoto-u.ac.jp/aedir/index.html
                protocol:  http
                name:  WDC-C2 KYOTO AE index service
                description:  Home page for the World Data Center for Geomagnetism with links to the data
                function:  (CI_OnLineFunctionCode) information
            onLine:  (CI_OnlineResource)
                linkage:  ftp://ftp.ngdc.noaa.gov/STP/GEOMAGNETIC_DATA/INDICES/AURORAL_ELECTROJET
            onLine:  (CI_OnlineResource)
                linkage: http://swdcwww.kugi.kyoto-u.ac.jp/aedir/index.html
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    dataQualityInfo:  NCEI repository history
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    metadataMaintenance:  (MD_MaintenanceInformation)
        maintenanceAndUpdateFrequency:  (MD_MaintenanceFrequencyCode) annually
        maintenanceNote:  This metadata was automatically generated from the Content Standard for Digital Geospatial Metadata: Extensions for Remote Sensing Metadata standard (version FGDC-STD-012-2002) using the 2012-08-08 version of the FGDC RSE to ISO 19115-2 transform.
        maintenanceNote:  Translated from FGDC 2012-10-10T11:06:47.533-06:00
        maintenanceNote:  This record was automatically modified on 2015-09-18 to include references to NCEI where applicable.
        contact:  Anna Milan
        contact:  Justin Mabie