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Metadata Identifier: gov.noaa.ngdc.stp.ionosonde:G00004

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 Worldwide Hourly Values of Ionospheric Characteristics: foF2, M(3000)F2, hF2,FoF1, M(3000)F1, hF, FoE, hE, foE2, hE2, foEs, fbEs, fmI, and FxI The ionosphere is that part of the Earth's atmosphere that results mainly from the ionizing effect of Solar electromagnetic radiation. For poleware latitudes, the ionizing effect of incident energetic particles is also significant. Traditionally, the following ionospheric regions and their approximate height ranges have been designated: D region (60-90 km); E region (90-150 km); F1 region (150-250 km); and F2 region (above 250 km). Ionosondes utilize the radio wave-reflecting properties of the ionosphere. The product of the speed of light in a vacuum and half the elapsed time between vertical transmission of a single frequency electromagnetic wave and reception of the reflected wave at the transmitting location is defined as the virtual height of that frequency. A sweep-frequency ionogram is a plot of virtual height versus frequency and is recorded as nearly instantaneously as possible. These ionospheric data consists mainly of hourly values for at least one to a maximum of all of the following ionospheric characteristics (parameters). They are foF2, M(3000)F2, hF2, foF1, M(3000)F1, hF, foE, hE, foE2, hE2, foEs, fbEs, hEs, fmI, and fxI. The values are five byte (character) fields. The first three bytes of the field are reserved for a numeric value; the last two bytes are reserved for the qualifying and descriptive letter, if present. There are no decimals encoded in these data. Documentation is supplied with each data order. Data are archived on CDROM, optical disk, and magnetic tape. There are two CD-ROM's sold as a set. One contains 1957 - 1975 data; the other contains 1976-1990 data. The CDROM contains ASCII files and runs on DOS-compatible machines. A catalog, which lists the contents of the CDROM data set, is available via anonymous FTP.ngdc.noaa.gov and GOPHER.ngdc.noaa.gov in the /STP/IONOSPHERE/CATALOG directory. Additional data are available, but have not yet been put on CDROM. Data are also available on magnetic tape and IBM compatible diskette. U.S. Department of Commerce NOAA, NESDIS E/GC2 National Geophysical Data Center and World Data Center - A 325 Broadway Boulder, CO 80303-3328 USA FAX:303-497-6513 Internet:info@mail.ngdc.noaa.gov Phone:303-497-6414 Raymond O. Conkright
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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 Earth Science Keywords
      1 NASA/GCMD Location Keywords
        1 Uncontrolled Keywords
          1 Worldwide Hourly Values of Ionospheric Characteristics: foF2, M(3000)F2, hF2,FoF1, M(3000)F1, hF, FoE, hE, foE2, hE2, foEs, fbEs, fmI, and FxI
          • 1973-01-01
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          CI_Series

          Count Component Name Issue Identification Page
          1 Solar-Terrestrial Physics (STP) Working Document 'Working Document'
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          CI_ResponsibleParty

          Count Component Individual Organization Position Email Role Linkage
          3 No Title Justin Mabie DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce Space and Terrestrial Weather Specialist Justin.Mabie@noaa.gov pointOfContact
          1 Justin Mabie DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce justin.mabie@noaa.gov distributor
          1 User Services DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce ngdc.info@noaa.gov publisher
          1 User Services DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce ngdc.info@noaa.gov originator
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          CI_OnlineResource

          Count Component Linkage Name Description Function
          1 ftp://ftp.ngdc.noaa.gov/ionosonde/
          1 http://www.ngdc.noaa.gov/stp/IONO/ionohome.html
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          MD_Identifier or RS_Identifier

          none found
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          EX_Extent

          Bounding Box Temporal Extent
          Count Component Description West East North South Start End
          1 -180.000000 180.000000 90.000000 -90.000000 1942-01-01
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          EX_GeographicBoundingBox

          Count Component West East North South
          1 -180.000000 180.000000 90.000000 -90.000000
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          EX_TemporalExtent

          Count Component Start End
          1 1942-01-01
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          MD_Format

          Count Component Name Version specification
          1 ASCII
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          MD_Medium

          Count Component Name mediumFormat mediumNote
          1 cdRom iso9660
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          MD_Constraints

          Count Component Use Limitation
          1 Disclaimer 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.
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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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