Currently running metadata API version: v3 — see the OpenAPI spec.

Patch release v2.0.5

Launched 2026-11-10

Search map: upgraded the map library (Leaflet 1.7.1 → 1.9.4) to fix selecting facility markers in Safari and other WebKit browsers
Search map: "Show only ACTRIS labelled & initially accepted" now stays on when facilities are selected, so you can search for and select facilities without the map filter switching off
Search map: while "Select only ACTRIS labelled & initially accepted" is on, other facilities can no longer be added to the filter from the map. Their popup button is disabled, with a hint on how to re-enable it
Search map: fixed other-facility markers sometimes showing black instead of grey after toggling the map filter
About page: added the 2025 group image, with a responsive layout on narrow screens, and updated the expert team list and DC board
Statistics: added variable and framework filters for CLU statistics (further chnages under work)

Patch release v2.0.4

Launched 2026-10-20

Search: added an 'Access Restriction' filter
Search: advanced fields now work correctly together with "clear filters"
Search: filter dropdowns stay open after a selection instead of closing immediately
Search: added a fallback "flat" filter list for when the controlled vocabulary fails to load
Search: results table now correctly enforces the max random-access result-row limit
Inspect page: fixed the metadata table layout on narrow screens, and added a fallback display for unrecognised personnel role codes
Metadata download now streams directly from the Metadata API instead of being reconstructed
Model Products are now only shown per-station if they actually exist for that station, with a loading spinner while this is checked
Added a lock icon for restricted datasets in search results and the basket
Fixed the landing page hero image tiling
Consolidated and made the basket/result table buttons stateful, so add-to-basket reflects the current state, including on inspect and facility pages
Standardised the button colour convention across the site
Replaced flash/admonition messages with toast notifications
Fixed a version-mismatch and request race condition
Fixed a writer race condition
Improved caching for faster performance

Patch release v2.0.3

Launched 2026-09-04

Basket: fixed multi-file dataset downloads — ARES datasets (whose per-file URLs all share the same basename) were collapsing into one file in the zip; EUROCHAMP/ASC datasets (whose per-file URLs are fine, but whose server sends the same misleading Content-Disposition filename for every file) were doing the same in reverse. Each source's filenames are now picked correctly
Landing page: multi-file datasets now list every file in a table (name, format, size, access) on the inspect page, instead of only ever showing the first file; file size is also now shown using the unit reported by the metadata API, instead of assuming bytes
Search/basket: datasets covering more than one matrix (e.g. air and precipitation) now show all matrices, not just the first
Facility pages: fixed a crash when an unknown facility ID returned an empty response instead of a 404

Patch release v2.0.2

Launched 2026-08-21

v2.0.1 failed to deploy to production — a memory issue in the search index caused repeated crashes. This release fixes the underlying cause: the code that keeps search working when the metadata API is temporarily unavailable now runs separately, so it can no longer take the whole portal down with it
Basket: fixed "Download all files" not including every file for large baskets, caused by a hidden per-cookie size limit, and added a clearer error page (instead of a raw server error) for the rare case a request is still too large to process
Downloads: fixed ARES file names to correctly use the dataset's PID
Search: clearer error message when the metadata API is briefly unavailable (503)

Patch release v2.0.1

Launched 2026-08-19

Basket: downloads are now more resilient — per-file timeout, concurrent fetching, and automatic recovery from a stale/corrupted basket cookie
Search map: faster initial load and no more grey-out while the layout settles, plus clearer loading feedback
Releases page: caches the changelog file to avoid GitHub rate-limit errors
Privacy: added a placeholder notice for the Matomo opt-out box when it fails to load (e.g. private browsing, ad/tracker blockers)
SEO: added meta descriptions, canonical URLs and a sitemap across pages, to improve search-engine discoverability and make pages easier for AI tools to summarize correctly
Services page: moved to server-side rendering, with bug fixes
Removed the unmaintained /nrt page
Various server-side error logging and user-facing notification improvements across search, facility, and statistics pages

Major release v2.0.0

Launched 2026-08-13

Major changes: