European Space Weather Week (ESWW) 2026 will be held in Florence, Italy from 2nd – 6th November in a hybrid format. The overarching theme for ESWW2026 is ‘Data-driven and physics-based cross-scale space weather and space climate’.
The ESWW conference is an excellent opportunity for people from all over the world to gather and discuss the most recent insights in space weather and space climate, and to address the emerging challenges and impacts. Science, observations, data exploitation, data standards and metadata, service development, operational models, engineering and industrial needs are all important aspects of the field that are addressed.
One of the strengths of ESWW is that participants can contribute significantly to its content through Parallel Sessions, Plenary Sessions and Topical Discussion Meetings (TDMs).
Plenary Sessions
This year, the ESWW will host four plenary sessions.
Two plenary sessions will be dedicated to topics proposed by the community. Here, the community is invited to submit proposals to convene. Plenary session proposals are invited covering one or more of the following topics: modelling, data analysis, instrumentation, observations and measurements, end-user needs and applications, and R2O2R. The proposed sessions must fit within the theme of the conference, “Data-driven and physics-based cross-scale space weather and space climate”.
Proposals are sought that are engaging, of a particularly high-standard, relevant to the broader space weather and space climate community, and designed to stimulate discussion and debate.
The other two plenary sessions will feature distinguished presentations proposed by the convenors of parallel sessions, promoting parallel sessions to a broader audience. As such these sessions will not be part of this call.
Parallel Sessions
This year ESWW PC decided to implement a new format for parallel sessions. Those interested in convening a session at ESWW2026 may submit a proposal to one of the following Topics:
- SOL – The Sun and Solar activity
- HEL – Heliosphere (including , e.g., solar wind, ICMEs, SEPs, GCRs, SW effects on other planets, etc.)
- MIT – Magnetosphere/Ionosphere/Thermosphere
- SWI – SW effects on Infrastructure
- SCL – Space Climate
- IOM – Instrumentation, Observation techniques, and Missions (including, e.g., sessions related to end-users and applications)
- OTH – Other topics
Proposers have the freedom to choose the title for their session. In the session description, the motivation and the reason why the proposed session is relevant for this year should be provided in one or two sentences. The proposed session may be a general one or focusing on a specific subject related to a selected Topic.
A single OPS session is intended, which will welcome submissions on research topics related to Space Weather and Space Climate but not covered by any other focused sessions. The OPS session will be proposed by the PC and a team of conveners to lead such session will be announced later. One member of the PC will join the team to offer support.
The PC strongly encourages those who have not previously proposed a session to do so. In line with our commitment to diversity and inclusion, we welcome and encourage applications from conveners of all backgrounds, including but not limited to, different career stages, geographical locations, ability, genders, and ethnicities.
Topical Discussion Meetings
Topical Discussion Meetings (TDMs) are an important component of the European Space Weather Week (ESWW) – a format meant to facilitate engaging debates within the heliospheric, and space weather and space climate communities. These meetings provide the opportunity for interested participants to address key issues in a community forum style that complements the conference sessions. Potential conveners must describe in dedicated fields of the proposal form the target community, the expected outcome of the meeting, and its potential impact. After the selection of the proposed TDMs is made, the proposers will be informed in Q2 of 2026.
Call for abstracts
The abstract submissions (and Live Forecasts proposals) for ESWW 2026 are open (abstract submission form, guidelines for abstract submission).
- Opening date (oral+poster abstracts, Live Forecasts proposals) – 13th April 2026
- Closing date (oral abstracts, Live Forecasts proposals) – 21st May 2026 (updated)
- Closing date (poster abstracts) – 14th September 2026
A list of sessions is available on the ESWW Call for Abstracts page.
Here are sessions that have been specifically advertised to ATST:
Session: Bridging the inner solar atmosphere to the heliosphere: Integrating low-atmospheric physics into next-generation Space Weather forecasting
Nous souhaitons attirer votre attention sur notre session à la European Space Weather Week 2026 : « Bridging the inner solar atmosphere to the heliosphere: Integrating low-atmospheric physics into next-generation Space Weather forecasting »
Les avancées récentes en observations et en modélisation de la basse atmosphère solaire (de la chromosphère à la couronne interne) mettent en évidence son rôle clé dans la formation du vent solaire et le déclenchement des phénomènes éruptifs. Pourtant, cette région reste encore fortement simplifiée dans les modèles opérationnels de météo de l’espace, ce qui limite la précision des prévisions.
Cette session vise à rassembler observateurs, théoriciens et modélisateurs afin de mieux intégrer la physique des basses couches atmosphériques dans les futurs modèles de prévision. Plus précisément, nous chercherons à :
- construire une vision partagée des capacités actuelles, depuis la modélisation détaillée de l’atmosphère solaire interne jusqu’à son intégration dans les opérations de météo de l’espace,
- identifier et prioriser les processus physiques clés à améliorer dans les modèles de prévision de demain,
- favoriser les collaborations entre observations, simulations et besoins opérationnels, notamment via le développement conjoint de modèles et de campagnes d’observation.
Nous encourageons vivement les contributions de l’ensemble de la communauté : observateurs, théoriciens, modélisateurs et acteurs de la prévision/opérations.
(Transmis par Quentin Noraz)
Session: HEL3 – Radio instruments and diagnostics: from source regions to space weather applications
This year, a radio-focused session aims to showcase developments in radio instrumentation, techniques, and the ability to diagnose plasma environments using radio emissions. We encourage you to submit abstracts on radio instruments, as well as fundamental science and operational space-weather applications of radio observations, covering solar, heliospheric, magnetospheric, and planetary investigations alike.
Description:
Radio signals are a key diagnostic for space weather applications. Starting from the highest frequencies (GHz), radio observations are used to study solar atmospheric dynamics and identify the solar origins of accelerated particles, whereas measurements down to very low frequencies (kHz) reveal the ionosphere’s response to solar eruptions and enable its diagnosis. Solar radio bursts (MHz – kHz) are used to track the trajectories of flare- and shock-accelerated particles, diagnose the heliospheric environment, cover distances where other remote-sensing and in-situ measurements are unavailable, and also act as warning signs for space weather forecasting models. Meanwhile, radio interference and blackouts caused by solar storms affect vital services, reflecting our dependence on radio-based infrastructure. The aim of this session is to showcase the wide-ranging abilities of radio emissions in diagnosing plasma environments (including the heliosphere, magnetosphere, and planetary atmospheres), as well as developments in instrumentation and radio techniques. We encourage contributions from stand-alone (radio) studies or as part of multi-wavelength investigations, whether focused on fundamental research or operational applications. We also encourage contributions showcasing advances in radio techniques, in addition to current and future radio instrumentation relevant to space weather monitoring and forecasting applications.
(Transmis par Nicolina Chrysaphi)