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16 datasets found
  • Federal

    Ionospheric Digital Database    recent views

    National Oceanic and Atmospheric Administration, Department of Commerce —

    The ionosphere is that part of the Earth's atmosphere that results mainly from the photo ionization of the upper atmosphere. Traditionally, the following ionospheric...
  • Federal

    Scaled Data from Analog Ionograms    recent views

    National Oceanic and Atmospheric Administration, Department of Commerce —

    Ionospheric Parameters such as FoF2, FoF1, FoE derrived from hand scaling of analog Ionograms
  • Federal

    Ionospheric Oblique Incidence Soundings by Satellites    recent views

    National Oceanic and Atmospheric Administration, Department of Commerce —

    The oblique incidence sweep-frequency ionospheric sounding technique uses the same principle of operation as the vertical incidence sounder. The primary difference is...
  • Federal

    AA Index    recent views

    National Oceanic and Atmospheric Administration, Department of Commerce —

    The geomagnetic aa index provides a long climatology of global geomagnetic activity using 2 antipodal observatories at Greenwich and Melbourne- IAGA Bulletin 37, 1975...
  • Federal

    AP Index    recent views

    National Oceanic and Atmospheric Administration, Department of Commerce —

    Planetary Amplitude index - Bartels 1951. The a-index ranges from 0 to 400 and represents a K-value converted to a linear scale in gammas (nanoTeslas)--a scale that...
  • Federal

    Geomagnetic aa Indices    recent views

    National Oceanic and Atmospheric Administration, Department of Commerce —

    The geomagnetic aa indices are the continuation of the series beginning in the year 1868. A full description of these indices is given in the International...
  • Federal

    Geomagnetic Components D, H, X, Y, Z, and R 10-second Instantaneous Measurements    recent views

    National Oceanic and Atmospheric Administration, Department of Commerce —

    These data are generated as part of the International Magnetospheric Study. The file consists of 10-second instantaneous measurements for the geomagnetic components...
  • Federal

    Geomagnetic Variation Data - 1-Minute Remote Geophysical Observatory Network (RGON)    recent views

    National Oceanic and Atmospheric Administration, Department of Commerce —

    This data file was generated as part of the International Magnetospheric Study (IMS). The file consists of values of the geomagnetic components D, H, X, Y, Z, and R...
  • Federal

    Values for the 15-minute Index of Geomagnetic Activity at High Latitude Stations (Geomagnetic Latitude 58 Degrees)    recent views

    National Oceanic and Atmospheric Administration, Department of Commerce —

    The NOAA National Centers for Environmental Information (formerly National Geophysical Data Center) receives, on a monthly basis, Q indices from Sodankyla. These data...
  • Federal

    Ionograms - Digital    recent views

    National Oceanic and Atmospheric Administration, Department of Commerce —

    Ionograms are recorded tracings of reflected high frequency radio pulses generated by an ionosonde. Unique relationships exist between the sounding frequency and the...
  • Federal

    Calculations of the Total Number of Electrons Along a Ray Path Extending from the Transmitter to the Receiver    recent views

    National Oceanic and Atmospheric Administration, Department of Commerce —

    Ionospheric Total Electron Content (TEC) is the total number of electrons in a column of unit cross section extending from the transmitter to the receiver. TEC is...
  • Federal

    AM Index    recent views

    National Oceanic and Atmospheric Administration, Department of Commerce —

    Geomagnetic Range index using data from multiple observatories - Mayaud 1948
  • Federal

    Scaled Data from Digital Ionograms    recent views

    National Oceanic and Atmospheric Administration, Department of Commerce —

    All the data contributed come from 1957 through 1990. They have been digitized, reformatted, converted to universal time (the software also can display the data in...
  • Federal

    Ionograms - Analog    recent views

    National Oceanic and Atmospheric Administration, Department of Commerce —

    Ionograms are recorded tracings of reflected high frequency radio pulses generated by an ionosonde. Unique relationships exist between the sounding frequency and the...
  • Federal

    Auroral Electrojet Index Designed to Provide a Global Measure, Hourly Intervals, of Auroral Zone Magnetic Activity    recent views

    National Oceanic and Atmospheric Administration, Department of Commerce —

    The Auroral Electrojet (AE) index is designed to provide a global quantitative measure of auroral zone magnetic activity produced by enhanced ionospheric currents...
  • Federal

    Auroral Electrojet Index Designed to Provide a Global Measure, l-minute Intervals, of Auroral Zone Magnetic Activity    recent views

    National Oceanic and Atmospheric Administration, Department of Commerce —

    The Auroral Electrojet index (AE) is designed to provide a global quantitative measure of auroral zone magnetic activity produced by enhanced ionospheric currents...
16 datasets found

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