International Service of Geomagnetic Indices

ISGI is the Reference service of the International Association of Geomagnetism and Aeronomy (IAGA) for validation, dissemination and stewardship of geomagnetic indices (with the help of 6 ISGI-Collaborating-Institutes internationally spread) through its official Web portal.

ISGI is an official French National Service of CNRS-INSU which is getting a double label, both in «Solid Earth» TS‑ANO4 (National Observation in Magnetism) and in «Astronomy-Astrophysics» AA‑ANO6 (Surveillance of the Sun and the Earth’s Space Environment).
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