Canadian High Arctic Ionospheric Network

[1] After passing through the Earth's ionosphere, microwave GPS signals carry information about the total electron content (TEC).

[4] Most of the CHAIN instruments are located within the polar cap defined as a region of open magnetic field lines.

Polar cap thus provides a vantage point for the study of energy exchange between the solar wind, magnetosphere and ionosphere.

CHAIN ionosonde and GPS data are used for tomographic reconstructions of polar cap plasma anomalies during geomagnetic storms [5] In January 2012, the Canada Foundation for Innovation announced funding for the Expanded Canadian High-Arctic Ionospheric Network (ECHAIN).

The data will contribute significantly to the progress of space research by providing a better understanding of the processes in the Sun-Earth system.