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Metadata Identifier: gov.noaa.ngdc.stp.ionosphere:G10022

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 Defense Meteorological Satellite Program (DMSP) - Space Weather Sensors The Defense Meteorological Satellite Program (DMSP) maintains a constellation of sun-synchronous, near-polar orbiting satellites. The orbital period is 101 minutes and inclination is 99 degrees. The space weather sensors collect insitu observations from the near-Earth space environment to measure ionospheric plasma fluxes, densities, temperatures and velocities. The National Geophysical Data Center (NGDC) presently receives the space weather data stream from the Air Force Research Lab (AFRL). NGDC maintains a publicly accessible archive and derived extensions of these data records. The DMSP SSJ/4/5 data provide a complete energy spectrum of the low energy particles that cause the aurora and other high altitude phenomena. The Special Sensor Magnetometer (SSM) measures geomagnetic fluctuations associated with geophysical phenomena (i.e., ionospheric currents flowing at high latitudes). The Special Sensor Ion Electron Scintillation (SSIES) instrument observes the ambient plasma by measuring 1) electron density and temperature; 2) ion density, temperature and drift velocity; and 3) scintillation at the DMSP orbital altitude.
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SV_Identification

none found
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CI_Citation

Count Component Title Date Citation Identifier
1 Defense Meteorological Satellite Program (DMSP) - Space Weather Sensors
  • 1982-01-01
DMSP
1 NASA/GCMD Data Center Keywords
    1 NASA/GCMD Earth Science Keywords
      1 NASA/GCMD Location Keywords
        1 Uncontrolled Keywords
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          CI_Series

          none found
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          CI_ResponsibleParty

          Count Component Individual Organization Position Email Role Linkage
          2 Citation URL http://www.ngdc.noaa.gov/stp/spaceweather.html
          3 Rob Redmon DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce Rob.Redmon@noaa.gov pointOfContact
          1 Rob Redmon DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce Rob.Redmon@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
          2 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
          3 http://spidr.ngdc.noaa.gov/spidr/querydmsp.do DMSP Satellite Images Search Search and download data for various DMSP Satellites and their time frames search
          3 http://www.ngdc.noaa.gov/stp/spaceweather.html Defense Meteorological Satellite Program - Space Weather Sensors Home page for DMSP archive, research and products at NGDC information
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          MD_Identifier or RS_Identifier

          Count Component Code
          1 DMSP
          1 Defense Meteorological Satellite Program F06
          1 Defense Meteorological Satellite Program F07
          1 Defense Meteorological Satellite Program F08
          1 Defense Meteorological Satellite Program F09
          1 Defense Meteorological Satellite Program F10
          1 Defense Meteorological Satellite Program F11
          1 Defense Meteorological Satellite Program F12 (DMSP 5D-2/F12)
          1 Defense Meteorological Satellite Program F13 (DMSP 5D-2/F13)
          1 Defense Meteorological Satellite Program F14
          1 Defense Meteorological Satellite Program F15
          1 Defense Meteorological Satellite Program F16
          1 Defense Meteorological Satellite Program F17
          1 Defense Meteorological Satellite Program F18
          1 SSI/ES (Special Sensor Ionospheric Plasma Drift/Scintillation Monitor) Objective: Measurement of the ambient electron density and temperatures, the ambient ion density, and the average ion temperature and molecular weight at the DMSP orbital altitude. The instrument consists of an electron sensor (Langmuir probe) and an ion sensor mounted on a 2.5 meter boom. The ion sensor is a planar aperture, planar collector sensor oriented to face the spacecraft velocity vector at all times. In addition to the Langmuir probe and planar collector which make up the SSI/E, the SSI/ES has a plasma drift meter and a scintillation meter.
          1 SSJ/4/5 (Precipitation Electron/Proton Spectrometer) Objective: Measurement of transfer energy, mass, and momentum of charged particles through the magnetosphere-ionosphere in the Earth's magnetic field. The instrument looks up toward the satellite zenith. - The SSJ/4 sensor consists of four electrostatic analyzers that record the flux of precipitating ions or electrons at 20 fixed energy channels between 30 eV and 30 keV. The curved plate detectors allow precipitating electrons and ions to enter through an aperture of about 20 x 10 (FWHM). Electrons and ions of the selected energy are deflected toward the target by an imposed electric field applied across the two plates. The two low energy detectors consist of 10 channels centered at 34, 49, 71, 101, 150, 218, 320, 460, 670, and 960 eV. The high energy detector measures particles in 10 channels centered at 1.0, 1.4, 2.1, 3.0, 4.4, 6.5, 9.5, 14.0, 20.5 and 29.5 KeV. Each detector integrates each channel for 0.09 s from high energy channel to low. A complete cycle is sampled each second. The primary sources of the particles precipitating into the upper atmosphere are the northern and southern auroral zones.
          1 SSM (Special Sensor Magnetometer), a triaxial fluxgate magnetometer. The SSM measures geomagnetic fluctuations associated with solar geophysical phenomena (i.e., ionospheric currents flowing at high latitudes). In combination with the SSI/ES and the SSJ/4, the SSM provides heating and electron density profiles in the high-latitude ionosphere. SSM takes and reports 12 readings/s for the Y and Z axes. Only 10 readings of the 12 readings per second are reported for the X axis due to telemetry limitations. The SSM's axes are aligned with the spacecraft's axes where X is downward and aligned to local vertical within 0.01 degree, Y is parallel to the velocity vector for spacecraft with ascending node in the afternoon/evening sector, and Z is away from the solar panel and anti-parallel to the orbit normal vector.) The measurement range is A?65535 nT for each axis, with a one-bit resolution of 2 nT. Note: The magnetic field has three sources: 1) the magnetic field from the solid Earth, 2) the magnetic field from electrical currents flowing in the ionosphere and magnetosphere, and 3) the magnetic field from the spacecraft. Measurement of source 2 is the principal objective of the SSM, the measurement of source 1 is a secondary objective, and measurement of source 3 is a nuisance which is eliminated from the data as much as possible during data processing
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          EX_Extent

          Bounding Box Temporal Extent
          Count Component Description West East North South Start End
          1 -180 180 90 -90 1975-04-01
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          EX_GeographicBoundingBox

          Count Component West East North South
          1 -180 180 90 -90
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          EX_TemporalExtent

          Count Component Start End
          1 1975-04-01
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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
          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.
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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

          Count Component DateTime Description
          1 1992-03-01T00:00:00 Mission Start Date
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          MI_Operation

          Count Component Code Type Status Description
          1 completed
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          MI_Platform

          Count Component Code Description
          1 Defense Meteorological Satellite Program F06
          1 Defense Meteorological Satellite Program F07
          1 Defense Meteorological Satellite Program F08
          1 Defense Meteorological Satellite Program F09
          1 Defense Meteorological Satellite Program F10
          1 Defense Meteorological Satellite Program F11
          1 Defense Meteorological Satellite Program F12 (DMSP 5D-2/F12)
          1 Defense Meteorological Satellite Program F13 (DMSP 5D-2/F13)
          1 Defense Meteorological Satellite Program F14
          1 Defense Meteorological Satellite Program F15
          1 Defense Meteorological Satellite Program F16
          1 Defense Meteorological Satellite Program F17
          1 Defense Meteorological Satellite Program F18
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          MI_Instrument

          Count Component Code Type Description
          1 SSI/ES (Special Sensor Ionospheric Plasma Drift/Scintillation Monitor) Objective: Measurement of the ambient electron density and temperatures, the ambient ion density, and the average ion temperature and molecular weight at the DMSP orbital altitude. The instrument consists of an electron sensor (Langmuir probe) and an ion sensor mounted on a 2.5 meter boom. The ion sensor is a planar aperture, planar collector sensor oriented to face the spacecraft velocity vector at all times. In addition to the Langmuir probe and planar collector which make up the SSI/E, the SSI/ES has a plasma drift meter and a scintillation meter. Plasma Drift Meter and a Scintillation Meter
          1 SSJ/4/5 (Precipitation Electron/Proton Spectrometer) Objective: Measurement of transfer energy, mass, and momentum of charged particles through the magnetosphere-ionosphere in the Earth's magnetic field. The instrument looks up toward the satellite zenith. - The SSJ/4 sensor consists of four electrostatic analyzers that record the flux of precipitating ions or electrons at 20 fixed energy channels between 30 eV and 30 keV. The curved plate detectors allow precipitating electrons and ions to enter through an aperture of about 20 x 10 (FWHM). Electrons and ions of the selected energy are deflected toward the target by an imposed electric field applied across the two plates. The two low energy detectors consist of 10 channels centered at 34, 49, 71, 101, 150, 218, 320, 460, 670, and 960 eV. The high energy detector measures particles in 10 channels centered at 1.0, 1.4, 2.1, 3.0, 4.4, 6.5, 9.5, 14.0, 20.5 and 29.5 KeV. Each detector integrates each channel for 0.09 s from high energy channel to low. A complete cycle is sampled each second. The primary sources of the particles precipitating into the upper atmosphere are the northern and southern auroral zones. Spectrometer
          1 SSM (Special Sensor Magnetometer), a triaxial fluxgate magnetometer. The SSM measures geomagnetic fluctuations associated with solar geophysical phenomena (i.e., ionospheric currents flowing at high latitudes). In combination with the SSI/ES and the SSJ/4, the SSM provides heating and electron density profiles in the high-latitude ionosphere. SSM takes and reports 12 readings/s for the Y and Z axes. Only 10 readings of the 12 readings per second are reported for the X axis due to telemetry limitations. The SSM's axes are aligned with the spacecraft's axes where X is downward and aligned to local vertical within 0.01 degree, Y is parallel to the velocity vector for spacecraft with ascending node in the afternoon/evening sector, and Z is away from the solar panel and anti-parallel to the orbit normal vector.) The measurement range is A?65535 nT for each axis, with a one-bit resolution of 2 nT. Note: The magnetic field has three sources: 1) the magnetic field from the solid Earth, 2) the magnetic field from electrical currents flowing in the ionosphere and magnetosphere, and 3) the magnetic field from the spacecraft. Measurement of source 2 is the principal objective of the SSM, the measurement of source 1 is a secondary objective, and measurement of source 3 is a nuisance which is eliminated from the data as much as possible during data processing Magnetometer
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