We also thank all the participants for their interesting contributions.

The recordings and presentation slides are available online ➡️ ecmwfevents.com/i/5th-ecmwf-...

Group photo of approximately 180 people standing in front of large screen with the text "5th ECMWF-ESA Machine Learning Workshop. Bologna, Italy. 13-17 April 2026."

Conference hall with rows of people watching two speakers at the front, in front of a stage and large screen

Conference room full of men and women in the audience. One person is speaking with a microphone

It has been a great week at the 5th ECMWF-ESA Machine learning workshop in Bologna, Italy.

Thanks @esaearth.esa.int for the successful collaboration on yet another productive ESOP workshop.

🧵

Did you know that the European State of the Climate 2025, published by #CopernicusClimate @ecmwf.int and @wmo-global.bsky.social , will provide in-depth insight into 21 climate topics, including biodiversity?

Get ready for its release on 29 April! #ESOTC2025

More ⬇️

This afternoon, don’t miss this talk on ML applications:

14:30-15:00 CEST
Developing a Pixel-Based Children's Climate Risk Index for Targeted Intervention

➡️️ ecmwfevents.com/i/5th-ecmwf-...

It’s day 3 of the 5th ECMWF-ESA Machine learning workshop. The day kicks off with this talk:

09:00-09:30 CEST
‘Data Assimilation in the era of the AI revolution - where we stand today’ by Steve Penny from Sofar Ocean

Tune in ➡️️ ecmwfevents.com/i/5th-ecmwf-...

@esaearth.esa.int
#MachineLearning

🧵

Upward view of a tall tree trunk with sunlight filtering through a dense green forest canopy.

🌳A new ECMWF study uses machine learning to optimise afforestation in Europe.
Targeted planting could reduce river flooding (up to 43%), cut water loss, and boost groundwater retention.
➡️ www.ecmwf.int/en/about/med...
📷Marvin V. / Adobe Stock

Day 2 of the 5th ECMWF-ESA Machine learning workshop begins with this presentation:

09:00-09:30 CEST

CLIM4health: from Citizen Science, Machine Learning and Earth Observation towards Urban Climate Services

Watch ➡️️ ecmwfevents.com/i/5th-ecmwf-...

@esaearth.esa.int
#MachineLearning

ECMWF Science Blog graphic titled ‘How confident should we be in a prediction of El Niño?’ alongside a colour‑shaded Pacific Ocean temperature map. Author Tim Stockdale.

How confident should we be in a prediction of El Niño?

Seasonal forecasts show an emerging warm ENSO signal, but predictability remains low during the spring barrier.

Read our blog diving deeper into how to interpret our ENSO-related seasonal forecasts ➡️ www.ecmwf.int/en/about/med...

This afternoon there will be two keynotes:

14:10-14:40 CEST
AI for Humanity: Foundational Machine Learning and Data Assimilation for a Resilient Earth

14:40-15:10 CEST
Machine learning-driven advances in geophysical data assimilation

Watch ➡️️ ecmwfevents.com/i/5th-ecmwf-...

@esaearth.esa.int

Large hall with rows of empty chairs facing a stage. Large screen above the stage reads “5th ECMWF–ESA Machine Learning Workshop, Bologna, Italy, 13–17 April 2026,” with ECMWF and ESA logos.

This afternoon, we will kick off the 5th ECMWF-ESA Machine learning workshop in Bologna, Italy.

Tune in online from 14:00 CEST to watch the opening.

➡️ ecmwfevents.com/i/5th-ecmwf-...

@esaearth.esa.int
#MachineLearning

🧵

Abstract image of a smartphone displaying a “Flash Flood Warning” alert, overlaid with a clock and flowing data lines against stormy clouds.

⏱️Minutes matter in extreme weather.

ECMWF delivers hundreds of terabytes of forecast data daily, ensuring the right information reaches the right people, fast.

Read more ➡️ www.ecmwf.int/en/about/med...

#CopernicusAtmosphere air quality forecast map for Europe, including several pollution episodes in March 2026 driven by natural events, seasonal activities and other anthropogenic sources.

🌍🌐 Our latest Destination Earth (DestinE) newsletter is out!

In this edition, we feature ECMWF’s highlights from recent weeks within the DestinE initiative, led by the European Commission’s DG Connect.

Read the full newsletter online: destine.ecmwf.int/ecmwf-destin...

Illustration of a row of wind turbines on flat land beneath a stylized blue cloud made of circuit lines

AI is transforming weather & climate science across Europe.

Anemoi, developed by ECMWF & national meteorological services, provides the shared foundations to take AI from research to real-world operations.

➡️ www.ecmwf.int/en/about/med...

One week to go until the 5th ECMWF-ESA Machine Learning workshop in Bologna, Italy.

The workshop takes place from 13-17 April and will explore the opportunities and challenges of using ML for Earth Observation and Prediction (ESOP).

➡️ events.ecmwf.int/event/488/

@esaearth.esa.int
#MachineLearning

🌍🌐 The DestinE AI Tooling Workshop strengthened the technical foundation of advancing machine learning (ML) within the EU initiative. Last month, experts from ECMWF and partner institutions gathered in the Netherlands for a 2,5 day hands-on workshop. Read more ➡️ destine.ecmwf.int/news/destine...

Banner for ECMWF’s Code for Earth. Text reads: “Phase 1: 24.02.2026–09.04.2026. Call for participation. Browse the 2026 challenges on GitHub. Submit your proposal by 09 April 2026.” Dark blue design with green digital graphics and partner logos along the bottom.

Last call for Code for Earth 2026!
Join ECMWF’s innovation programme & help develop opensource solutions in data visualisation, machine learning, software development & a new Africa-focused stream.
➡️www.ecmwf.int/en/about/media-centre/ne...

Rectangle split into a red section and a blue section. On the red section is a square wooden tile with a sun icon. On the blue section is a square wooden tile with a snowflake icon.

📢 Abstract submission deadline extended!

You now have until 10 April to submit your abstract for our forecast users meeting, UEF2026. Don’t miss the chance to be part of the programme - get your submission in!

More info ➡️ events.ecmwf.int/e/UEF2026

🌍🌐 𝗟𝗮𝘀𝘁 𝗰𝗵𝗮𝗻𝗴𝗲 𝘁𝗼 𝗿𝗲𝗴𝗶𝘀𝘁𝗲𝗿 𝗳𝗼𝗿 𝘁𝗵𝗲 𝗽𝗮𝗻𝗲𝗹 𝗱𝗶𝘀𝗰𝘂𝘀𝘀𝗶𝗼𝗻 “𝗧𝗵𝗲 𝗳𝘂𝘁𝘂𝗿𝗲 𝗼𝗳 𝗘𝗮𝗿𝘁𝗵 𝘀𝘆𝘀𝘁𝗲𝗺 𝗺𝗼𝗱𝗲𝗹𝗹𝗶𝗻𝗴 𝗶𝗻 𝘁𝗵𝗲 𝗲𝗿𝗮 𝗼𝗳 𝗮𝗿𝘁𝗶𝗳𝗶𝗰𝗶𝗮𝗹 𝗶𝗻𝘁𝗲𝗹𝗹𝗶𝗴𝗲𝗻𝗰𝗲”.

31 March 2026 | 15:00 CEST

The event is hosted by ECMWF under the EU's DestinE initiative. More information and registration ➡️ destine.ecmwf.int/news/webinar...

Graphic featuring a weather map with swirling green, yellow, and blue contours indicating storm systems over the North Atlantic and parts of Europe. Overlaid text reads: ‘ECMWF AIFS Blog – Severe storms in the age of machine learning’. Below, the authors’ names appear: Soufiane Karmouche, Tim Hewson, Linus Magnusson.

How well do ML weather models capture severe storms?

A new analysis of Storm Amy compares ECMWF’s forecasting systems.

Read the blog ➡️ www.ecmwf.int/en/about/med...

For researchers interested in atmospheric composition observations, modelling & monitoring - registration to participate in the 8th annual #atmostraining in Thessaloniki 19-23 October is now open! See link in the post below ⬇️

@esaearth.esa.int @eumetsat.int @ecmwf.int @copernicusecmwf.bsky.social

Join us! @ecmwf.int and @dlr-spaceagency.bsky.social are pleased to invite you to the 22nd International Workshop on Greenhouse Gas Measurements from Space, 29 June to 2 July.

Call for abstracts: submit your oral and poster presentation proposals by 3 April
atmosphere.copernicus.eu/22nd-interna...

🌍 Participate in @ecmwf.int's 2026 #CodeforEarth! Apply by 9 April to tackle challenges in data visualisation, machine learning & software development, plus a dedicated Africa stream, many leveraging #C3S & #CopernicusAtmosphere data. 🚀

🔗 codeforearth.ecmwf.int

@codeforearth.bsky.social

The GEWEX SSG-38 is well underway. The first two days focused on progress across the GEWEX Panels, along with reports from sister WCRP core programs, identifying opportunities to connect, strengthen cooperation, and align priorities.
@wcrpclimate.bsky.social, @ecmwf.int @copernicusecmwf.bsky.social

🌍🌐 Last chance to register for the webinar "𝗠𝗮𝗰𝗵𝗶𝗻𝗲 𝗹𝗲𝗮𝗿𝗻𝗶𝗻𝗴 𝗳𝗼𝗿 𝗘𝗮𝗿𝘁𝗵 𝘀𝘆𝘀𝘁𝗲𝗺𝘀 𝗺𝗼𝗱𝗲𝗹𝗹𝗶𝗻𝗴 - 𝘄𝗵𝗮𝘁 𝘄𝗲 𝗺𝗶𝗴𝗵𝘁 𝗲𝘅𝗽𝗲𝗰𝘁 𝗼𝘃𝗲𝗿 𝘁𝗵𝗲 𝗻𝗲𝘅𝘁 𝗱𝗲𝗰𝗮𝗱𝗲".

📅 Tomorrow | 15:00 CET

Secure your place now ➡️ events.ecmwf.int/event/555/re...

📣 Mark the date! On 29 April, @ecmwf.int and @wmo-global.bsky.social will release the European State of the Climate 2025 report, including full coverage of climate conditions, key events, and long-term trends of climate indicators.

Stay tuned! #ESOTC2025

@ec.europa.eu

⬇️

🌍🌐 Join our Co-Design Workshop on 8-9 June in Brussels! Explore real use cases, interact with DestinE systems and services, and help shape how they are used in practice. Ahead of the 5th User eXchange of the EU DestinE initiative. Register now ➡️ events.ecmwf.int/event/548/ov...

ECMWF Science Blog title card reading ‘Separating the signal from the noise’ by Massimo Bonavita and Alan Geer, shown beside a photo of bright white clouds and a deep blue sky.

🔎☁️What does a weather forecast really know?
A new study introduces a framework that separates information from noise – offering a clearer view of true skill, beyond RMSE or ACC.

Read the blog ➡️ www.ecmwf.int/en/about/med...

Ever wonder how ECMWF stores its data?
The Meteorological Archival and Retrieval System (MARS) is one of the largest meteorological archives in the world.
MARS began in the 1980s and has evolved into an exabyte-scale archive, containing operational and research data.
www.ecmwf.int/en/about/med...

🌍🌐 Great to join the @ec.europa.eu Apply AI webinar on Climate & Environment! ECMWF's Irina Sandu & Destination Earth showcased how Europe is turning decades of expertise into operational AI, from weather forecasting to an Earth System Model. destine.ecmwf.int/news/apply-a...