Throughout 2026, ECMWF will host a programme of events, workshops and training courses, bringing together experts from across Member States and the wider international community. The programme reflects ECMWF’s commitment to sharing knowledge, strengthening collaboration and supporting the development of next-generation weather and climate prediction systems.
This year’s events span a wide range of topics, including artificial intelligence (AI) and machine learning (ML), data assimilation, numerical weather prediction, Earth system observations and high-performance computing (HPC). Together, they provide opportunities for researchers, forecasters and users to exchange expertise, explore emerging methodologies and contribute to the evolution of operational forecasting.
Below is a list of events that are open for registration.
AI and machine learning
Three events in 2026 focus on the growing role of AI and ML.
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AI Weather Quest: DJF Awards Webinar (19 March)
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The ECMWF AI Weather Quest is an international competition leveraging AI and ML to advance weather forecasting.
The DJF Awards Webinar will celebrate the top performers from the December–January–February forecasting period. During the webinar, successful teams will present their results, and the event will offer an opportunity to connect with the AI Weather Quest community.
Register for the webinar on the event page.
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5th ECMWF–ESA Machine Learning Workshop (13–17 April)
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Taking place in Bologna, Italy, and online, the fifth edition of the ECMWF–ESA Workshop on Machine Learning for Earth Observation and Prediction will share the latest updates in this rapidly evolving field. It will provide a forum for discussion and interaction among worldwide scientists and practitioners about the current opportunities and challenges presented by the use of ML technologies for Earth System Observation and Prediction.
For more details, visit the event page. A livestream link will be made available for online attendance.
- 2026 Workshop on Machine Learning for Land and Hydrology (3–5 November)
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This workshop will bring together experts in ML, hydrology, and land-surface modelling to discuss the development and use of ML-based and ML-enhanced forecasting systems. Discussions will address ML-based prediction of streamflow, floods, soil moisture, and key land-surface processes, with an emphasis on robustness, scalability, and operational relevance.
Abstract submission (deadline 26 June) is welcomed for oral and poster presentations.
For more details and to register (deadline 30 September), visit the event page.
Annual Seminar
The ECMWF Annual Seminar is a flagship event that brings together the weather and climate communities to discuss emerging scientific and infrastructure challenges linked to the delivery of weather and climate information.
- Annual Seminar 2026 (14–18 September)
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The 2026 Annual Seminar will explore how new methodologies and ML techniques are transforming the assimilation of Earth system observations for numerical weather prediction, atmospheric composition, and climate reanalysis.
The seminar will highlight advances in ML emulation that enable more efficient use of diverse observations, improved uncertainty characterisation, and better handling of complex geophysical relationships. It will also examine approaches such as end-to-end and latent space data assimilation, as well as methods that generate forecasts directly from observations.
The seminar is aimed at early career scientists as well as more established scientists.
Abstract submission (deadline 12 June) is welcomed for poster presentations.
For more details and to register for in-person attendance (deadline 27 July), visit the event page. A livestream link will be made available for online attendance.
Forecast use and community engagement
Engaging with forecast users helps us better understand how our products are applied in practice and supports the continuous improvement of services.
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Using ECMWF’s Forecasts (UEF2026; 1–4 June)
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Using ECMWF’s Forecasts (UEF2026) is an annual forum for ECMWF forecast users to exchange ideas, share experiences, and discuss the use and performance of ECMWF's forecasts and related products. Open to all ECMWF forecast users worldwide, the forum supports collaboration, knowledge-sharing and dialogue to help ensure ECMWF’s forecasts continue to meet evolving user needs.
The theme for 2026 is temperature forecasting, with particular emphasis on extreme hot (heatwave) and cold (cold wave) events
Oral and poster presentation abstract submission, workshop proposals, and contributions on other relevant topics, innovative uses, or practical experiences with ECMWF forecasts are all welcome.
For more details and to register (in person registration deadline is 19 April), visit the event page.
Observations, campaigns and data assimilation
Observations and data assimilation continue to underpin all operational weather forecasting systems, and several events this year focus on advancing these foundations.
- 2026 Atmospheric River Reconnaissance (AR Recon) Workshop and the 2nd Observational Campaigns Workshop for Better Weather Forecasts (29 June–3 July)
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This event will review what has been learned from recent field campaigns and assess their impact on forecast model development, data assimilation, and scientific understanding. It will consider how campaign observations have been used, what gaps remain, and how future experiments can best support forecasting and research.
The event will bring together two separate – yet overlapping in scope – workshops: the 2026 Atmospheric River Reconnaissance (AR Recon) Workshop, providing results and developments from the latest campaign season, and the 2nd Observational Campaigns Workshop, focusing on coordinated northern hemisphere campaigns in early 2026. Together, they will provide a forum to share lessons learned, maximise the use of campaign data, and explore future needs, including the use of observations for ML applications.
The workshops are open to experts involved in AR Recon and field campaigns.
Abstract submissions for oral and poster presentations are invited for both workshops (abstract submission deadline 30 April).
For more details and to register (deadline 14 May), visit the event page.
Modelling systems and software infrastructure
Sustainable and adaptable modelling systems are essential for the future of numerical weather prediction, particularly in the context of evolving computing architectures and development practices.
- Workshop on software strategies for sustainable physical modelling (23-27 November)
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This workshop will explore how to build and maintain sustainable physical modelling systems over the coming decade, in the context of evolving high-performance computing architectures, programming environments and scientific approaches. Discussions will address software development strategies that support long-term model adaptability, including the integration of machine learning, shared code repositories, automated testing, modern development workflows and open-source practices.
Oral and poster presentation abstract submission is welcome (deadline 4 September).
For more details and to register for in person or online attendance (deadline is 25 September), visit the event page.
Training courses
A core element of ECMWF’s events programme is training, supporting users from Member States in developing the skills needed to make effective use of forecast products and services.
- Numerical methods for weather prediction (13–17 April)
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This course provides an in-depth overview of contemporary methods, recent advancements, and current challenges in numerical methods used in weather prediction and climate models.
For more details, visit the event page.
- Online training course: Atos HPC training (18–21 May)
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This online course introduces ECMWF’s supercomputing system and enables participants to exploit its full potential. The course is designed to help users who are actively using, or planning to use, the ECMWF systems, and is delivered through a combination of presentations with hands-on practical sessions.
For more details, visit the event page.
Copernicus events and courses
Copernicus Climate Change Service (C3S)
- Online course: Understanding climate data (23 February–30 Apri)
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This self-paced online course introduces the fundamentals of climate data for users who are new to the topic or looking to build confidence in working with different data types.
For more details and to register, visit the course page on the C3S website.
Copernicus Atmosphere Monitoring Service (CAMS)
- 9th CAMS Policy User Workshop (4-5 March)
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Taking place in Budapest, Hungary, this workshop will present the latest updates on the CAMS service and products to support reporting under the Ambient Air Quality Directive (AAQD).
For more details and to register, visit the event page on the CAMS website.
- 22nd International Workshop on Greenhouse Gas Measurement from space (29 June–2 July)
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This event will take place in Bonn, Germany and co-hosted with the German Space Agency at DLR.
More details will be made available on the event page on the CAMS website.
Destination Earth (DestinE) events and courses
- 5th Destination Earth User eXchange (9–10 June)
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This event, taking place in Brussels and online, will bring together DestinE users and partners to hear the latest advances, and discuss how DestinE supports climate resilience, preparedness for extreme events, and adaptation efforts across Europe.
For more details and to register, visit the event page on the ECMWF DestinE website.
- Machine Learning for Earth Systems Modelling (throughout the year)
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This three-part online course series will introduce ML for Earth system modelling from foundational concepts to advanced prediction and hands-on applications.
For more details and to register your interest, visit the course page on the ECMWF DestinE website.
Full calendar of events
- See the full calendar of 2026 events.
- For DestinE events, keep an eye out on the ECMWF DestinE website.
- For Copernicus events, visit the events calendar on the C3S and CAMS websites.