This home page provides listing and plotting capabilities for 10-second resolution ionospheric parameters from Hinotori, the 7th Japanese scientific satellite launched on 2/1981 into a low-inclination (31.3 deg.), circular (600 km) orbit. The Hinotori Plasma Probes observed the equatorial topside ionosphere measuring electron density and temperature from February 23, 1981 to June 19, 1982 (solar cycle maximum).
More information about the Hinotori mission can be found in the following
K-I.Oyama, Electron temperature measurements carried out by Japanese scientific satellites, Advances in Space Research, Volume 11, Number 10, p149-158, 1991.
K.-I. Oyama, K. Schlegel, and S. Watanabe, Temperature structure of plasma bubbles in the low latitude ionosphere areound 600 km altitude, Planetary and Space Science, Vol. 36, 553-567, 1988.
The user can download original data files as well as
.txt files from SPDF ANON FTP site using the following links:
HINOTORI ASCII data files by month.
Time span of the data set: 1981-02-22 - 1982-06-14
|SPDF > ATMOWeb|
|Send questions about ATMOWeb data to
Dr. Dieter Bilitza
Send questions about ATMOWeb system/interface to: Dr. Natalia Papitashvili