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Forecast | Ionosphere | ISES, RWC Japan
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National Institute of Information and Communications Technology

International Space Environment Service, Regional Warning Center Japan
This site provides the latest information on space environment near Earth

Ionosphere

Ionosonde observations over Japan

Sporadic E-layer
Wakkanai
Kokubunji
Yamagawa
Okinawa

foF2 (Kokubunji)・TEC (37°N)・K index (Kakioka)

GEONET GPS-TEC map over Japan

TEC
Detrended with
60-min window
Detrended with
15-min window
Rate of TEC change
index (ROTI)
Rate of loss of
rock on GPS

Solar image

Flare EUV 94Å

Solar X ray flux

The Dellinger phenomena

Realtime ionospheric observation data