2026.07.1 Release

[James Bruten (james-bruten-mo)]

Dear All,

We are pleased to announce the 2026.07.1 release of the Simulation Systems repositories. All repositories¹ have also been tagged with 2026.07.1 🎉. Consolidated release notes are available at https://github.com/MetOffice/simulation-systems/wiki/2026.07.1

This release includes:

• LFRic vn3.2 (Apps and Core)
• UM vn14.2
• JULES vn8.2

  The JULES repository is now publicly visible, meaning existing forks will have been disconnected on GitHub. Please see https://metoffice.github.io/simulation-systems/FurtherDetails/visibility_changes.html for advice on reattaching a fork.

Important

New Data Policy
Please note that with this release, introduction any new data files require a licence and a record of where they have come from, both for legal and auditing purposes.
Please refer to https://metoffice.github.io/simulation-systems/Development/testdata.html for details.

Many thanks to all who contributed developments and reviews.

James, on behalf of SimIT

Footnotes

1. LFRic Apps, LFRic Core, UM, JULES, UKCA, MOCI, CASIM, SOCRATES, SOCRATES-Spectral, UM Meta, UM Aux, UM Doc ↩