Realtime European ionosphere

This page displays total electron content (TEC) in the ionosphere over Europe, as calculated from GPS data, using the MIDAS tomographic algorithm. It is updated continuously (with a lag of about half an hour, to allow for data acquisition and processing). See the space weather page for more information about the science behind these reconstructions. Data is given in standard TEC units, equivalent to 10¹⁶ electrons per square meter.

Requires HTML5 Canvas support (e.g. Firefox 3.5 or higher, Internet Explorer 9 or higher, or Chrome 7 or higher). See also the 3D version.

View time (UTC)

Direct link

Link to map at current time.

Download TEC file

Download TEC file.

TEC file specifications

• View file specification.
• Download MatLab function for loading TEC files.

Acknowledgements

• GPS data courtesy of:
  • The EUREF network.
  • The Ordnance Survey.
  • The International GNSS Service.
• Coast outline map data courtesy of National Oceanic and Atmospheric Administration.

© Invert Group 2009–2012 except where otherwise indicated. (l)