Sodankylä ionospheric tomography data set 2003–2014

Norberg, Johannes; Roininen, Lassi; Kero, Antti; Raita, Tero; Ulich, Thomas; Markkanen, Markku; Juusola, Liisa; Kauristie, Kirsti

doi:10.5194/gi-5-263-2016

Articles | Volume 5, issue 1

https://doi.org/10.5194/gi-5-263-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue:

Multi-disciplinary research and integrated monitoring at the...

https://doi.org/10.5194/gi-5-263-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 5, issue 1

Research article

|

01 Jul 2016

Research article |

| 01 Jul 2016

Sodankylä ionospheric tomography data set 2003–2014

Johannes Norberg, Lassi Roininen, Antti Kero, Tero Raita, Thomas Ulich, Markku Markkanen, Liisa Juusola, and Kirsti Kauristie

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Feb 2025	16	9	3	28
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Apr 2025	15	15	0	30
May 2025	18	6	1	25
Jun 2025	38	10	1	49
Jul 2025	27	11	3	41
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Mar 2026	29	4	3	36
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May 2026	0

Cumulative views and downloads (calculated since 04 Dec 2015)

Month	HTML	PDF	XML	Total
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Nov 2025	31	15	5	51
Dec 2025	17	16	2	35
Jan 2026	60	29	11	100
Feb 2026	28	19	9	56
Mar 2026	29	4	3	36
Apr 2026	46	17	14	77
May 2026	0

Saved (final revised paper)

Latest update: 02 May 2026

Short summary

The Sodankylä Geophysical Observatory has been producing ionospheric tomography data since 2003. Based on these data, one solar cycle of ionospheric vertical total electron content (VTEC) estimates is constructed. The measurements are compared against the IRI-2012 model, F10.7 solar flux index and sunspot number data. Qualitatively the tomographic VTEC estimate corresponds to reference data very well, but the IRI-2012 model are on average 40 % higher of that of the tomographic results.