Surface field histogram

[Sylviabohnenstengel]

Fixes #639

Contribution checklist

Aim to have all relevant checks ticked off before merging. See the developer's guide for more detail.

• [ ] Documentation has been updated to reflect change.
• [ ] New code has tests, and affected old tests have been updated.
• [x] All tests and CI checks pass.
• [x] Added an entry to the top of docs/source/changelog.rst
• [ ] Conda lock files have been updated if dependencies have changed.
• [ ] Said whether Generative AI, such as GitHub Copilot, has been used in this PR.
• [ ] Marked the PR as ready to review.

[jfrost-mo]

Old head was: d104bcbf517e46dc82ae62ff564382dfd5d73464

[github-actions[bot]]