CEDAR email: Call for Abstracts: ESWW 2026 Session on GNSS-Based Monitoring of Ionospheric Irregularities

[Tibor Durgonics]

Dear colleagues,
We would like to invite contributions to the following session at European Space Weather Week 2026, to be held 2–6 November 2026 in Florence, Italy, in hybrid format.
MIT2 – Cross-scale GNSS-based monitoring of ionospheric irregularities: from physics to operational space weather services
Conveners: Sarah Beeck, Tibor Durgonics, and Cathryn Mitchell
Ionospheric irregularities span a wide range of spatial and temporal scales and remain a major source of uncertainty for space-weather monitoring, forecasting, and operational services, particularly for systems relying on GNSS-based positioning, navigation, and timing. These effects are especially important at high latitudes, where auroral and polar-cap processes produce strong ionospheric structuring, but they are also relevant at equatorial and mid-latitude regions during disturbed conditions.
This session invites contributions on the observation, characterization, modeling, and operational use of GNSS-based measurements of ionospheric irregularities across scales. We particularly welcome studies addressing:

  *   scintillation indices, TEC, ROTI, phase fluctuations, and TEC gradients;
  *   multi-frequency and multi-constellation GNSS observations;
  *   dense receiver networks and regional/global mapping approaches;
  *   GNSS radio occultation and limb-viewing diagnostics;
  *   integration of ground-based GNSS with complementary observations such as radio occultation, ionosondes, radars, and other geospace measurements;
  *   data assimilation, data fusion, nowcasting, forecasting, validation, and uncertainty quantification;
  *   generation, morphology, dynamics, and impacts of ionospheric irregularities;
  *   research-to-operations developments and user-oriented space-weather services.

Our goal is to bring together observational, modeling, theoretical, and operational perspectives on GNSS-based irregularity monitoring, with emphasis on how cross-scale scientific understanding can support robust space-weather services.
The abstract submission deadline for oral contributions and Live Forecasts proposals has been extended to 21 May 2026. Poster submissions remain possible later according to the ESWW timeline.
Abstract submission and session information are available through the ESWW 2026 website<https://esww2026.eswan.eu/conference/abstract-submission>.
We look forward to receiving your contributions and to seeing many of you in Florence.
Best regards,
Sarah Beeck, Tibor Durgonics, and Cathryn Mitchell

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