High-latitude MSTIDs over the EISCAT-3D site: solar activity and seasonal dependency

Rathi, Rahul; Grocott, Adrian; Yeoman, Tim K.; Lester, Mark

doi:10.5194/angeo-44-353-2026

Articles | Volume 44, issue 1

https://doi.org/10.5194/angeo-44-353-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/angeo-44-353-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 44, issue 1

Regular paper

|

19 May 2026

Regular paper |

| 19 May 2026

High-latitude MSTIDs over the EISCAT-3D site: solar activity and seasonal dependency

Rahul Rathi, Adrian Grocott, Tim K. Yeoman, and Mark Lester

Supplement

https://doi.org/10.5194/angeo-44-353-2026-supplement

Model code and software

SuperDARN Radar Software Toolkit (RST) 5.1 (v5.1) SuperDARN Data Analysis Working Group et al. https://doi.org/10.5281/zenodo.4435150

SuperDARN/pydarn: pyDARN v4.1.2 (v4.1.2) SuperDARN Data Visualization Working Group et al. https://doi.org/10.5281/zenodo.15441879

Short summary

We investigate high-latitude medium scale traveling ionospheric disturbances (MSTIDs) over European Incoherent Scatter (EISCAT)-3D site. Using Hankasalmi radar data during solar max & min years of solar cycles 23 & 24, we observed that MSTIDs normally propagate equatorward with velocity and period of 50–150 m s^-1and 30–60 minutes, respectively. Along with seasonal variation, MSTIDs showed dependency on solar activity as well as on northward and southward interplanetary magnetic field (IMF) Bz.