Hi, 2020!

Final Global TEC Maps ››

Running Log

  • 2020-01-20,10:30:01@IRIS is beginning to process global GNSS data on 1/18,2020(DOY:018).
  • 2020-01-20,10:30:02@IRIS is starting to download ephemeris and GNSS data.
  • 2020-01-20,10:32:24@Data are downloaded. Time consumption:2.3448 minutes.
  • 2020-01-20,10:35:00@Preprocessing is done. Time consumption:2.5821 minutes.
  • 2020-01-20,11:17:48@Data processing is completed. Time consumption:42.805 minutes.
  • 2020-01-20,11:17:48@Well done. Total consumption:47.778 minutes. IONEX products and web pages will be updated in a few minutes.
  • 2020-01-20,11:17:57@IRIS completed product visualization.
  • 2020-01-20,11:18:00@IRIS just pushed the latest products and updated the web pages.
  • 2020-01-20,11:18:00@Job final is finished. by IRIS 2.0

Run Time Statistics

Precision (Unit:TECU)

Sigma Mean residuals STD residuals RMS residuals
1.430 0.028 2.131 2.131

Global TEC Maps (Unit:TECU)


Global TEC Maps (Unit:TECU)

Satellite DCB (Unit:ns)


Frequency Distribution of Residuals (Unit:%)


Frequency Distribution of Absolute Residuals (Unit:%)


Frequency Distribution of Observed Satellites (Unit:%)



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Our work is conducted as a part of the International Association of Geodesy (IAG) working group 4.3.1 "Real-time Ionosphere Monitoring and Modelling" and working group 4.3.2 "Prediction of ionospheric state and dynamics".

Address: Room 103, International School, Beihang University, No. 37 Xueyuan Road, Haidian District, Beijing, 100083, P.R. China

Email: ac@ionosphere.cn

Phone: +86 16601168599


Focus and concentration on studying ionospheric models. Implementation service of ionospheric delay correction for satellite navigation and wide-area, local-area augmentation system. A basis paltform for exploring the change rules and physical mechanism of the ionosphere.

To understand the structure and change rules of the ionosphere; To reduce the space environment risk of satellite lauch; To improve the performance of satellite navigation system and radar; To increase the reliability of radio communications; To strengthen early warning and forecasting of earthquake and tsunami.