Topside Total Electron Content is now available from GNSS observations collected onboard Metop-A and Metop-B.
Thursday, 06 September 2018
Zenith GNSS (Global Navigation Satellite System) data collected through the Precise Orbit Determination (POD) antennas of the GRAS receivers flying on the Metop-A and Metop-B satellites can also be exploited to determine the Total Electron Content (TEC) of the topside ionosphere from the Low Earth Orbit (LEO) GRAS receiver to any GNSS satellite in view. These 'slant' TEC data are used to determine the vertical TEC of the topside ionosphere (namely the tTEC).
A dataset of netCDF-4 daily files containing slant TEC and geolocated vertical tTECs from Metop-A and Metop-B, covering four months from March to June 2015, is now available for demonstration purposes on our ftp server:
See the Topside Total Electron Content (tTEC) Product Format Specification (PDF, 523 KB) for more information.
For more information and to provide feedback on the content contact our User Service Helpdesk (ideally by the end of 2018).