ISO Table View Back to Collection NOAA/NESDIS/NGDC/STP/Indices
View Metadata As: Get Data, FAQ, HTML, 19139 XML
Assess Metadata For: Completeness, DOI Readiness, CSW Readiness, Components

Metadata Identifier: gov.noaa.ngdc.stp.indices:G00584

Aggregation Info | Bands | Citations | Constraints | Coverage Descriptions | Dimensions | Extents | Formats | Geographic Bounding Box
Georectified Information | Georeferenceable Information | Identifiers | Instruments | Mediums | OnlineResources | Operations
Platforms | Process Steps | Range Elements | Reference Systems | Responsible Parties | Series | Sources | Spatial Grids | Temporal Extents

MD_DataIdentification

Count Component Title Abstract
1 Auroral Electrojet (AE, AL, AO, AU) - A Global Measure of Auroral Zone Magnetic Activity 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.
Top

SV_Identification

none found
Top

CI_Citation

Count Component Title Date Citation Identifier
1 Auroral Electrojet (AE, AL, AO, AU) - A Global Measure of Auroral Zone Magnetic Activity
    1976-01-01
1 GCMD Data Center Keywords NASA/GCMD Data Center Keywords
    2015-03-01
    1995-04-24
2 NASA/GCMD Earth Science Keywords
    Top

    CI_Series

    Count Component Name Issue Identification Page
    1 Upper Atmosphere Geophysics International Standard Serial Numbers (ISSN) 'ISSN 0579-7144 UAG Upper Atmosphere Geophysics'
    Top

    CI_ResponsibleParty

    Count Component Individual Organization Position Email Role Linkage
    2 Citation URL http://swdcwww.kugi.kyoto-u.ac.jp/aedir/index.html
    1 DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce publisher
    1 DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce originator
    1 GCMD User Support Office NASA GCMD User Support Office gcmduso@gcmd.gsfc.nasa.gov publisher http://gcmd.nasa.gov/MailComments/MailComments.jsf?rcpt=gcmduso
    Unresolved Xlinks
    Justin Mabie at: /gmi:MI_Metadata/gmd:contact[1]
    NCEI (publisher) at: /gmi:MI_Metadata/gmd:identificationInfo[1]/gmd:MD_DataIdentification[1]/gmd:citation[1]/gmd:CI_Citation[1]/gmd:citedResponsibleParty[1]
    Justin Mabie at: /gmi:MI_Metadata/gmd:identificationInfo[1]/gmd:MD_DataIdentification[1]/gmd:pointOfContact[1]
    GCMD Valids at: /gmi:MI_Metadata/gmd:identificationInfo[1]/gmd:MD_DataIdentification[1]/gmd:descriptiveKeywords[4]/gmd:MD_Keywords[1]/gmd:thesaurusName[1]/gmd:CI_Citation[1]/gmd:citedResponsibleParty[2]
    Justin Mabie at: /gmi:MI_Metadata/gmd:distributionInfo[1]/gmd:MD_Distribution[1]/gmd:distributor[1]/gmd:MD_Distributor[1]/gmd:distributorContact[1]
    Anna Milan at: /gmi:MI_Metadata/gmd:metadataMaintenance[1]/gmd:MD_MaintenanceInformation[1]/gmd:contact[1]
    Justin Mabie at: /gmi:MI_Metadata/gmd:metadataMaintenance[1]/gmd:MD_MaintenanceInformation[1]/gmd:contact[2]
    Top

    CI_OnlineResource

    Count Component Linkage Name Description Function
    2 ftp://ftp.ngdc.noaa.gov/STP/GEOMAGNETIC_DATA/INDICES/AURORAL_ELECTROJET Geomagnetic Data/Indices/Auroral Electroject ftp site download
    1 http://gcmd.nasa.gov/MailComments/MailComments.jsf?rcpt=gcmduso GCMD Feedback Form Have a Comment for the GCMD? information
    3 http://swdcwww.kugi.kyoto-u.ac.jp/aedir/index.html WDC-C2 KYOTO AE index service Home page for the World Data Center for Geomagnetism with links to the data information
    1 http://www.ngdc.noaa.gov/geomag Auroral Electrojet Index (AE) Home page information
    Top

    MD_Identifier or RS_Identifier

    none found
    Top

    EX_Extent

    Bounding Box Temporal Extent
    Count Component Description West East North South Start End
    1 -180.00 180.00 90.00 -90.00 1957-01-01
    Top

    EX_GeographicBoundingBox

    Count Component West East North South
    1 -180.00 180.00 90.00 -90.00
    Top

    EX_TemporalExtent

    Count Component Start End
    1 1957-01-01
    Top

    MD_Format

    Count Component Name Version specification
    1 ASCII
    Top

    MD_Medium

    none found
    Top

    MD_Constraints

    Count Component Use Limitation
    1 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.
    Top

    MD_ReferenceSystem

    none found
    Top

    MD_GridSpatialRepresentation

    none found
    Top

    MD_Georeferenceable or MI_Georeferenceable

    none found
    Top

    MD_Georectified or MI_Georectified

    none found
    Top

    MD_Dimension

    none found
    Top

    MD_CoverageDescription or MI_CoverageDescription

    none found
    Top

    MD_Band or MI_Band

    none found
    Top

    MI_RangeElementDescription

    none found
    Top

    MD_AggregateInformation

    none found
    Top

    LE_Source or LI_Source

    none found
    Top

    LE_ProcessStep or LI_ProcessStep

    none found
    Top

    MI_Operation

    none found
    Top

    MI_Platform

    none found
    Top

    MI_Instrument

    none found
    Top