Session will expire soon!
Session will expire in:
seconds.
Move the mouse cursor to refresh the session.
Session has expired!
Home
Login
GISC Brasilia [BR]
>
Product information
Login
ui-button
Search products
Language selection
English
Español
Português
Contact us
Help
General information
Identifier:
urn:x-wmo:md:jp.go.nict.swc::ionoms-OK
Title:
Ionospheric parameters scaled manually from Okinawa ionosonde
Created:
Tue Sep 15 00:00:00 UTC 2015
Detailed information
Product description:
Some parameters which are manually scaled from ionosondes obtained at Okinawa station in Japan. The ionosonde sweeps HF radio pulses from 1MHz to 30MHz, basically every 15 minutes. The transmitted radio pulses travel more slowly within the ionosphere, depending on the ionospheric plasma density. The apparent height, that is, virtual height of the reflection point is recorded for each frequency of the transmitted HF radio wave in ionograms. When the frequencies become higher than the maximum plasma frequency of the ionospheric layer, the radio wave pass through the layer and be lost in space. The frequency which corresponds to the maximum plasma frequency of each layer is called critical frequency. Some parameters such as critical frequency (e.g., foF2, foEs) and virtual heights (h’F2, h’Es) are manually scaled basically every 1 hour. Time is Japanese Standard Time (JST), which is UTC + 9.
Online resource:
http://wdc.nict.go.jp/IONO/HP2009/ISDJ/manual_txt.html
Category codes:
spaceWeather
Geographic keywords:
Meteorological code:
TXT
Use limitation:
non-wmo
Location
Product instances
Download XML metadata file
© 2010-2020 IBL Software Engineering, spol. s r. o.
1.6.2-DobryWietor
