Work

Climatology of large scale Traveling Ionospheric Disturbances above Europe during the 2014-2023 period

Year: 2025

Type: article

Abstract: This study analyzes the climatology of Large Scale Traveling Ionospheric Disturbances (LSTIDs) over Europe from 2014 to 2023 using the HF-Interferometry method (HF-INT), which provides LSTID’s activity detected in near-real-time by a network of European ionosondes. For this purpose, this LSTID activity has been analyzed in depth and a Catalogue of observed LSTID events has been obtained providing, among others, the onset time, duration, dominant period, and propagation velocity vector of each LSTID event. The results, derived from this Catalogue of LSTIDs, reveal that LSTID occurrence is significantly dependent on local time, seasonal variations, and geomagnetic conditions, with activity peaks observed during equinoxes, particularly at night and in the early morning hours. Key propagation characteristics include velocities ranging from 500 m/s to 700 m/s and azimuths, suggesting a southward direction, closely associated with auroral activity. Additionally, a distinct westward propagation in the morning hours is attributed to the solar terminator effect.

Source: Journal of Space Weather and Space Climate

DOI: 10.1051/swsc/2025024

Authors: Antoni Segarra, David Altadill, Víctor de Paula, Víctor Navas-Portella

Institutions: Consejo Superior de Investigaciones Científicas, Observatori de l'Ebre, Universitat Ramon Llull

Language: English

Topic: Ionosphere and magnetosphere dynamics

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $1,413

Funders: U.S. Air Force, Leibniz-Gemeinschaft