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Metadata Identifier: gov.noaa.ngdc.stp.solar:G00538

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 Solar Corona The solar corona is the outermost layer of the sun's atmosphere--a very hot halo (millions of degrees), that, in the form of the solar wind, extends well past the Earth's orbit. The corona is observed in detail during solar eclipses. In practice, the corona is observed routinely by ground-based and satellite coronagraphs in the red line Fe X (634.7nm -- ten times ionized iron line) and the green line Fe XIV (530.3 nm -- 14 times ionized iron line), and occasionally in the high energy yellow line Ca XV (569.4 nm -- 15 times ionized Calcium line). White light observations of the solar corona are also made routinely, and used for detecting coronal mass ejections (CMEs) that may affect the Earth. The coronagraph is a special telescope with an occulting disk to block the direct light of the sun and thus able to measure the brightness of the fainter and less dense corona. The intensities are recorded in tabular form, historically in 5-degree increments around the sun's disk. The data center holds data in analog form from 12 stations covering the period 1943 to present. Currently, 2 stations send daily coronal scans to the data center. A coronal activity index from Lomnicky Stit, Slovak Republic, 1939-present, is also available. Coronal data exhibit the 11 year solar cycle variation. Solar X-ray measurements since 1991 by the Yohkoh and GOES Solar X-ray Imager (SXI) satellites allow continuous coverage of the constantly changing hot solar corona.
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SV_Identification

none found
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CI_Citation

Count Component Title Date Citation Identifier
1 NASA/GCMD Data Center Keywords
    1 NASA/GCMD Location Keywords
      1 GCMD Science Keywords NASA/Global Change Master Directory (GCMD) Earth Science Keywords
      • 2007-04
      1 Solar Corona
      • 1964
      Downloadable Data
      1 Uncontrolled Keywords
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        CI_Series

        Count Component Name Issue Identification Page
        1 Solar Geophysical Data (SGD) International Standard Serial Numbers (ISSN) ISSN 0038-0911 Solar Geophysical Data Solar Geophysical Data (SGD) Published Monthly
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        CI_ResponsibleParty

        Count Component Individual Organization Position Email Role Linkage
        1 DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce (comp.) publisher
        1 Lommicky Stit, Slovakia originator
        1 NASA/GSFC/SED/ESD/GCDC/GCMD > Global Change Master Directory, Global Change Data Center, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA resourceProvider http://gcmd.gsfc.nasa.gov/Resources/valids/archives/keyword_list.html
        2 Solar Data Manager DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce solar.ngdc@noaa.gov pointOfContact
        1 Solar Data Manager DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce solar.ngdc@noaa.gov distributor
        1 Solar Data Manager DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce solar.ngdc@noaa.gov custodian
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        CI_OnlineResource

        Count Component Linkage Name Description Function
        2 ftp://ftp.ngdc.noaa.gov/STP/SOLAR_DATA/SOLAR_CORONA
        1 http://gcmd.gsfc.nasa.gov/Resources/valids/archives/keyword_list.html GCMD Keywords, Version 6.0.0.0.0 Thesuarus for earth science keywords and associated directories hosted and maintained by NASA. information
        1 http://sxi.ngdc.noaa.gov/sxi/servlet/sxisearch
        2 http://www.ngdc.noaa.gov/stp/SOLAR/ftpsolarcorona.html
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        MD_Identifier or RS_Identifier

        Count Component Code
        1 Downloadable Data
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        EX_Extent

        Bounding Box Temporal Extent
        Count Component Description West East North South Start End
        1 1939
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        EX_GeographicBoundingBox

        none found
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        EX_TemporalExtent

        Count Component Start End
        1 1939
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        MD_Format

        Count Component Name Version specification
        1 ASCII
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        MD_Medium

        none found
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        MD_Constraints

        Count Component Use Limitation
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        MD_ReferenceSystem

        none found
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        MD_GridSpatialRepresentation

        none found
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        MD_Georeferenceable or MI_Georeferenceable

        none found
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        MD_Georectified or MI_Georectified

        none found
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        MD_Dimension

        none found
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        MD_CoverageDescription or MI_CoverageDescription

        none found
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        MD_Band or MI_Band

        none found
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        MI_RangeElementDescription

        none found
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        MD_AggregateInformation

        none found
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        LE_Source or LI_Source

        none found
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        LE_ProcessStep or LI_ProcessStep

        none found
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        MI_Operation

        none found
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        MI_Platform

        none found
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        MI_Instrument

        none found
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