GNSS Research and Application for Polar Environment (GRAPE) Expert Group


GRAPE focuses in particular on GNSS high sampling rate (50 Hz) receivers network at bipolar latitudes. Information on raw data and related products [Total Electron Content (TEC), scintillation indices, Rate of TEC (ROT), etc.] are available at:

INGV's Electronic Space Weather Upper Atmosphere, Italy:

GNSS Group, Belgium:

Madrigal Database:

Canadian High Arctic Ionospheric Network:

South African National Space Agency:
SANSA Geomagnetic data:

See also the membership section for other useful contacts related to data availability.