Journal cover Journal topic
Annales Geophysicae An interactive open-access journal of the European Geosciences Union
Journal topic

Journal metrics

Journal metrics

  • IF value: 1.585 IF 1.585
  • IF 5-year value: 1.698 IF 5-year
    1.698
  • CiteScore value: 1.62 CiteScore
    1.62
  • SNIP value: 0.820 SNIP 0.820
  • IPP value: 1.52 IPP 1.52
  • SJR value: 0.781 SJR 0.781
  • Scimago H <br class='hide-on-tablet hide-on-mobile'>index value: 83 Scimago H
    index 83
  • h5-index value: 24 h5-index 24
Discussion papers
https://doi.org/10.5194/angeo-2019-160
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/angeo-2019-160
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Submitted as: regular paper 18 Dec 2019

Submitted as: regular paper | 18 Dec 2019

Review status
This preprint is currently under review for the journal ANGEO.

Modeling Total Electron Content derived from radio occultation measurements by COSMIC satellites over the African Region

Patrick Mungufeni1, Claudia Stolle2,3, Sripathi Samireddipalle4, Yenca Migoya-Orué5, and Yong Ha Kim1 Patrick Mungufeni et al.
  • 1Department of Astronomy and Space Science, Chungnam National University, Daejeon, South Korea
  • 2GFZ German Research Centre for Geosciences, Potsdam, Germany
  • 3Faculty of Sciences, University of Potsdam, Potsdam, Germany
  • 4Indian Institute of Geomagnetism, New Panvel, India
  • 5T/ICT4D laboratory of the Abdus Salam International Center for Theoretical Physics, 34151 Trieste, Italy

Abstract. This study developed a model of Total Electron Content (TEC) over the African region. The TEC data were derived from radio occultation measurements done by the Constellation Observing System for Meteorology, Ionosphere, and Climate (COSMIC) satellites. Geomagnetically quiet time (Kp < 3 and Dst > −20 nT) data during the years 2008–2011, and 2013–2017 were binned according to local time, seasons, solar flux level, geographic longitude, and dip latitude. Cubic B splines were fitted to the binned data to obtain the model. The model was validated using TEC data of the years 2012 and 2018. The validation exercise revealed that, approximation of observed TEC data by our model produces root mean squared error of 4.8 TECU. Moreover, the modeled TEC data correlated highly with the observed TEC data (r = 0.93). Our model is the first attempt to predict TECs over the entire African region by using extensive COSMIC TEC measurements. Due to the extensive input data and the good modeling technique, we were able to reproduce the well-known features such as local time, seasonal, solar activity, and spatial variations of TEC over the African region.

Patrick Mungufeni et al.

Interactive discussion

Status: final response (author comments only)
Status: final response (author comments only)
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
[Login for Authors/Topical Editors] [Subscribe to comment alert] Printer-friendly Version - Printer-friendly version Supplement - Supplement

Patrick Mungufeni et al.

Patrick Mungufeni et al.

Viewed

Total article views: 162 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
130 32 0 162 1 3
  • HTML: 130
  • PDF: 32
  • XML: 0
  • Total: 162
  • BibTeX: 1
  • EndNote: 3
Views and downloads (calculated since 18 Dec 2019)
Cumulative views and downloads (calculated since 18 Dec 2019)

Viewed (geographical distribution)

Total article views: 118 (including HTML, PDF, and XML) Thereof 118 with geography defined and 0 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 

Cited

Saved

No saved metrics found.

Discussed

No discussed metrics found.
Latest update: 21 Feb 2020
Publications Copernicus
Download
Short summary
This study developed a model of Total Electron Content (TEC) over the African region. The TEC data were derived fro radio occultation measurements done by the Constellation Observing System for Meteorology, Ionosphere, and Climate (COSMIC) satellites. Geomagnetically quiet time data during the years 2008–2011, and 2013–2017 were binned according to local time, seasons, solar flux level, geographic longitude, and dip latitude. Cubic B splines were used to fit the data for the model.
This study developed a model of Total Electron Content (TEC) over the African region. The TEC...
Citation