- About SWE
- Service Domains
- Expert Service Centres
- Other Resources
Warning: IONMON is currently under maintenance; the recent TEC maps are temporarily not available.
Modelled global Total Electron Content over the past 24 hours as generated by IONMON (*).
The IONMON model (ESA/ESOC Ionosphere Monitoring Facility, v2) uses an analytic function approach to describe ionospheric structures by means of vertical profile functions combined with horizontal surface functions. TEC data derived from dual-frequency GNSS data are processed in combination with observed electron density profiles obtained from radio occultation measurements.