ECMWF Model Improvement Scheduled for October 1, 2025

[cycloneye]

Much more new tools for ECMWF coming on October 1 2025. Yes!!!

This modes keeps getting more tools to improve even more the forecasts. Check out what is coming.

https://www.ecmwf.int/en/about/media-ce ... tatus-2025

Excerpts:

ECMWF is bringing forward the full transition to open data by 1 October 2025, marking a significant milestone in its commitment to making weather data more accessible and impactful.

The change means that the entire ECMWF Real-time Catalogue will be fully available under a CC-BY-4.0 licence at the maximum resolution, removing the Information Cost (data cost) for all users.

Data produced by the Integrated Forecasting System (IFS) and the Artificial Intelligence Forecasting System (AIFS) will then all be open at their full native resolution with no data cost, further expanding access to high-quality numerical weather prediction products.

The decision to accelerate the transition to open data reflects ECMWF’s confidence in the open data model and its ability to support scientific, commercial, and operational users worldwide.

By moving to full implementation in 2025 rather than 2026, ECMWF is enabling earlier access to high-resolution data, supporting research, innovation, and operational forecasting for a broad range of users.

The shift to open data has already demonstrated significant benefits, with open data usage continuing to grow rapidly and the range of industries using it widening. Since expanding free and open datasets, ECMWF has seen a 150% increase in open data retrievals, with the ECMWF Data Portal now serving approximately 680 TB per month. Access through third-party providers such as Open-Meteo, Amazon, Google, and Microsoft further extends global reach.

At the same time, high-volume use with a service charge remains a crucial part of ECMWF’s data ecosystem. The number of high-volume licensed users has grown by 46% during the open data transition since 2020, reflecting strong demand for specialised services and operational forecasting support.

The transition builds on previous steps, such as making AIFS data openly available in 2024 and progressively increasing the resolution of free and open datasets. This next phase completes the transition, ensuring seamless, unrestricted access to ECMWF’s forecasting products for all.

It enshrines the commitment of ECMWF and its Member States to open policies fostering re-use of data and collaboration for the broader benefit of society.

Further details on how to access the full ECMWF Real-time Catalogue will be provided ahead of the transition in October 2025.

[cycloneye]

 https://x.com/TropicalTidbits/status/1901646404554314082