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Radio Observation Data at Syowa Station

Please select the year of data you want.
2007 2006 2005 2004
2003 2002 2001 2000


National Institude of Information and Communications Technology has been observing the absorption of cosmic radio noise with a standard riometer (relative ionospheric opacity meter) at 30 MHz at Syowa Station,Antarctica since February 1966.

The combined data plots also contain geomagnetic field provided by National Institute of Polar Research.

Comments on this report and requests for additional copies are welcome and should be sent to the following address:

Antarctic Research Office
Applied Research and Standards Department
National Institute of Information and Communications Technology (NICT)
2-1, Nukui-Kitamachi 4-chome, Koganei-shi
Tokyo 184-8795, Japan

TEL: +81-42-327-6095
E-mail address: syo_iono(at)