ATMOWeb: Satellite Observations of Ionosphere and Upper Atmosphere


This home page provides a scatter plot of 16-second ionospheric/thermospheric data obtained by NASA's DE-2 spacecraft between August 06, 1981 and February 15, 1983. (spacecraft operations ceased on February 19). The DE-2 orbit was high-inclination and elliptical (300-1000 km).

The user can download daily files in ASCII format from SPDF's anonymnous ftp site in directory spacecraft_data/de/de2/combined_plasma_neutrals_ua/de2_ua/.

*Select an activity
     Scatter plot/regression fit (max # points = 30000)     List data

* Enter start and stop dates
[Format: YYYYMMDDHH, Valid range: 19810806 - 19830215]
   Start time      Stop time

*Select X and Y variables and optional low/high filter values for any variable
Variable Name X/Y Axes Optional values:
Low    High
Orbit/Attitude Parameters
Altitude [km] X-axis Y-axis   
Latitude [degree] X-axis Y-axis   
Longitude [degree] X-axis Y-axis   
Local Time [hour] X-axis Y-axis   
Local Magnetic Time [hour] X-axis Y-axis   
L-shell parameter [Re] X-axis Y-axis   
Invariant Latitude [degree] X-axis Y-axis   
Solar zenith angle [degree] X-axis Y-axis   
Orbit Number X-axis Y-axis   
Neutral Atmospheric Composition Spectrometer (NACS)
N2 [cm-3] X-axis Y-axis   
O [cm-3] X-axis Y-axis   
He [cm-3] X-axis Y-axis   
Ar [cm-3] X-axis Y-axis   
N [cm-3] X-axis Y-axis   
Wind and Temperature Spectrometer (WATS)
Neutral temperature [K] X-axis Y-axis   
Eastward (zonal) neutral wind [m/s] X-axis Y-axis   
Upward (zonal) neutral wind [m/s] X-axis Y-axis   
LANGmuir Probe (LANG)
Electron density [cm-3] X-axis Y-axis   
Electron temperature [K] X-axis Y-axis   
Fabry-Perot Interferometer(FPI)
Wavelength [Angstrom] X-axis Y-axis   
Tangent altitude [km] X-axis Y-axis   
Northward neutral wind [m/s] X-axis Y-axis   
Neutral temperature [K] X-axis Y-axis   
Intensity [Raleighs] X-axis Y-axis   
Retarding Potential Analyzer (RPA) and Ion Drift Meter (IDM)
Ion temperature [K] X-axis Y-axis   
Total ion density [cm-3] X-axis Y-axis   
Eastward ion drift [m/s] X-axis Y-axis   
Northward ion drift [m/s] X-axis Y-axis   
Upward ion drift [m/s] X-axis Y-axis   

* User may select the fitting method
    No fitting      Delta-Y method(N<30000)

*Advanced plot selections (optional)
X-axes type: Y-axes type:
View mode: Character size (0.5-2.0):
Plot symbol: Symbol size (0.1-4.0):
Image size (pixels): X: Y: Connect style:

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

NASA Official: Robert Candey (, Head of the Space Physics Data Facility