SPDF ATMOSPHERIC HINOTORI DATA

SPDF HINOTORI DATA

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 documents:
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

Please Fill the Form below, then Submit Query to start operations:

Select an activity
Plot data* List data Create file (file?)
*Series of plots may be generated; duration of each is changeable below

Enter start and stop dates
(enter year(1973-2000), month(01-12), day(01-31), hour(00-23), as YYYYMMDDHH)
Start time Stop time [Valid range: [1981-02-22-23 - 1982-06-14-13]

Select variables

Local Time


Year     Month       Day
HOUR     Minute      Second


Orbit/Attitude Parameters


Orbit number
Longitude (Deg)                 Latitude (Deg)
Geomagnetic Latitude (Deg)      Altitude (Km)

Ionospheric Parameters

Delta_t(Ne)/sec; exact time of electron density measurement is second of UT+delta_t, or second of LT +delta_t

Electron density(/cm-3) observed by Impedance probe.

Delta_t(Te)/sec, exact time of electron temperature measurement is second of UT+delta_t, or second of LT +delta_t

* Electron temperature/K calculated from the floating potential shifts when a rf signal of 0.5V is applied to the Langmuir probe electrode.

* Electron temperature/K calculated from the floating potential shifts when a rf signal of 0.25V is applied to the Langmuir probe electrode.

* Electron temperature/K obtained from the ratio of the two Lanmuir Probe floating potential shifts.

Satellite potential (mV)

* It is recommended to use the first of the three given electron temperature values, because it is the most reliable value with only small fluctuation (see also Oyama, 1991).

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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

	Delta_t(Ne)/sec; exact time of electron density measurement is second of UT+delta_t, or second of LT +delta_t
	Electron density(/cm-3) observed by Impedance probe.
	Delta_t(Te)/sec, exact time of electron temperature measurement is second of UT+delta_t, or second of LT +delta_t
*	Electron temperature/K calculated from the floating potential shifts when a rf signal of 0.5V is applied to the Langmuir probe electrode.
*	Electron temperature/K calculated from the floating potential shifts when a rf signal of 0.25V is applied to the Langmuir probe electrode.
*	Electron temperature/K obtained from the ratio of the two Lanmuir Probe floating potential shifts.
	Satellite potential (mV)
	* It is recommended to use the first of the three given electron temperature values, because it is the most reliable value with only small fluctuation (see also Oyama, 1991).