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Electron Density from Alouette 2

This home page provides access to data from the Cylindrical Electrostatic Probe (CEP) experiment on the Alouette 2 satellite. Alouette 2 was launched on 1965-11-29 into an elliptical orbit (500-3000km) with an inclination of 79.8 degrees. Its payload included a topside sounder, a VLF receiver, an energetic particles experiment, a cosmic noise experiment, and the CEP. Data are available for times when the satellite crossed a telemetry station. Telemetry stations were located so that primary data coverage was near the 80 deg W meridan plus areas near Hawaii, Singapore Australia, the UK, India, Norway, and Central Africa. Initially data were recorded about 8 h per day.
ASCII data set also contains needed spacecraft position data, IGRF model parameters, and indices.

Time Resolution:1-5 Minutes

This data set and its description are placed at NSSD's anonymous FTP site spdf.gsfc.nasa.gov in directory ftp://spdf.gsfc.nasa.gov/pub/data/alouette/plasma_lp

Time span of the data set: 1966-02-21 - 1967-02-16

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 Local Time
 Geodetic Latitude of the Spacecraft, Degrees
 Geodetic Longitude of the Spacecraft, Degrees
 Geomagnetic Latitude of the Spacecraft, Degrees
 Geomagnetic Longitude of the Spacecraft, Degrees
 Altitude,km
 Dip Latitude, Degrees
 Magnetic inclination (dip), Degrees
 B, Magnetic field strength, 1/100 Gauss 
 L value 
 Quality Code for L value
 ZSUN, Solar Zenith Angle, Degrees, 0-180
 ap indices (daily) 
 kp indices (3 hour) 
 F10.7 (solar radio flux, daily)
 Sunspot number (daily)
 Orbit number

 Electron Density (cm-3)
 Satellite potential (mV)


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Send questions about ATMOWeb data to Dr. Dieter Bilitza
Send questions about ATMOWeb system/interface to: Dr. Natalia Papitashvili

NASA Official: Dr. Robert McGuire, Head of the Space Physics Data Facility