Canadian High Arctic Ionospheric Network (CHAIN)
Article first published online: 23 MAY 2009
Copyright 2009 by the American Geophysical Union.
Volume 44, Issue 1, February 2009
How to Cite
2009), Canadian High Arctic Ionospheric Network (CHAIN), Radio Sci., 44, RS0A03, doi:10.1029/2008RS004046., et al. (
- Issue published online: 23 MAY 2009
- Article first published online: 23 MAY 2009
- Manuscript Accepted: 18 MAR 2009
- Manuscript Revised: 3 MAR 2009
- Manuscript Received: 18 OCT 2008
- high-latitude ionosphere;
- radio instruments;
- instrument network
 Polar cap ionospheric measurements are important for the complete understanding of the various processes in the solar wind-magnetosphere-ionosphere system as well as for space weather applications. Currently, the polar cap region is lacking high temporal and spatial resolution ionospheric measurements because of the orbit limitations of space-based measurements and the sparse network providing ground-based measurements. Canada has a unique advantage in remedying this shortcoming because it has the most accessible landmass in the high Arctic regions, and the Canadian High Arctic Ionospheric Network (CHAIN) is designed to take advantage of Canadian geographic vantage points for a better understanding of the Sun-Earth system. CHAIN is a distributed array of ground-based radio instruments in the Canadian high Arctic. The instrument components of CHAIN are 10 high data rate Global Positioning System ionospheric scintillation and total electron content monitors and six Canadian Advanced Digital Ionosondes. Most of these instruments have been sited within the polar cap region except for two GPS reference stations at lower latitudes. This paper briefly overviews the scientific capabilities, instrument components, and deployment status of CHAIN. This paper also reports a GPS signal scintillation episode associated with a magnetospheric impulse event. More details of the CHAIN project and data can be found at http://chain.physics.unb.ca/chain.