Code for Earth

Submissions Closed!

Thank you to everyone who applied to Code for Earth 2025!
The form is now closed, and we’re reviewing all your brilliant proposals. Shortlisted proposals will be announced soon!

Stay tuned — and thank you for coding for a better planet.

/EVALUATION PHASE

Watch the Q&A Webinars!

Have you missed our dedicated Code for Earth webinars!Watch the recordings on our YouTube Channel and get the answer to all of your questions on proposal submission, eligibility criteria, and much more!

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Watch the webinars!

About Code for Earth

Code for Earth is an innovation programme run by the European Centre for Medium-Range Weather Forecasts (ECMWF). Its aim is to drive innovation and open source developments in the Earth sciences community – supporting developments in weather, atmosphere, and climate, Copernicus and Destination Earth (DestinE). Learn more about ECMWF, Copernicus Climate Change Service (C3S), Copernicus Atmosphere Monitoring Service (CAMS) and DestinE.

Since 2018, each summer, selected developer teams work together with experienced mentors from ECMWF and partner organisations on innovative projects. These projects are related to the broad scope of activities at ECMWF, including data science, weather, climate or other earth sciences, visualisation and more.

How it works

From the Call for participation to the Final Code for Earth Day

Step 1

Call for participation

17 February - 01 April

Browse through the Code for Earth 2025 challenges on GitHub. Ask questions and together with mentors, you can tailor your submission. Submit your proposal by 01 April 2025.

Step 2

Announcement of selected proposals

29 April

The Code for Earth 2025 teams will be announced on 29 April 2025. You can follow Code for Earth on LinkedIn, BlueSky, and subscribe to the newsletter to get all updates.

Step 3

Coding phase

02 May - 31 August

The four-month long coding period starts on 02 May 2025 and ends on 31 August 2025. During this time, the selected teams will work with their Code for Earth mentors. These are experts in earth sciences like weather, climate and climate change, atmosphere and air quality or in technology areas like AI/ML, cloud computing, applied data science or open source software development.

Step 4

The Final Code for Earth Day

September - Bologna, Italy

The Code for Earth Day is a celebratory completion of the programme. This year the event will be hosted at ECMWF's headquarters in Bologna, Italy. Teams will be invited to present their project results.

The organisations we partnered with this year

to develop unique joint challenges, which serve not only as a call to action for problem-solvers but also as a testament to the power of collaboration