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Federal
Satellite Anomalies Due to Environment 11 recent views
National Oceanic and Atmospheric Administration, Department of Commerce —
These events range from minor operational problems to permanent spacecraft failures. Australia, Canada, Germany, India, Japan, United Kingdom, and the United States... -
Federal
Ionospheric Digital Database
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
Sudden Ionospheric Disturbances (SID)
National Oceanic and Atmospheric Administration, Department of Commerce —
Sudden ionospheric disturbances (SID) are caused by solar flare enhanced X-rays in the 1 to 10 angstrom range. Solar flares can produce large increases of ionization... -
Federal
Space Environment Monitor (SEM) data from NOAA POES and MetOp
National Oceanic and Atmospheric Administration, Department of Commerce —
The Space Environment Monitor (SEM) instrument onboard the NOAA POES satellite series and MetOp satellite series measures the flux of energetic ions and electrons at... -
Federal
Calculations of the Total Number of Electrons Along a Ray Path Extending from the Transmitter to the Receiver
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
Air Force Geophysics Laboratory Magnetometer Network
National Oceanic and Atmospheric Administration, Department of Commerce —
This file is comprised of the variation one minute values of the geomagnetic components X, Y and Z. These data were calculated by the Air Force Geophysics Laboratory... -
Federal
Geomagnetic aa Indices
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
Photographic Records Showing the Variations of the Virtual Height of Reflection as a Function of the Radio Frequency
National Oceanic and Atmospheric Administration, Department of Commerce —
The standard (analog) ionosonde produces photographic records known as ionograms, which show the variations of the virtual height of reflection as a function of the... -
Federal
Ionospheric Oblique Incidence Soundings by Satellites
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...