Host and retrieve land cover data on/from Zenodo#16
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koen-vg merged 2 commits intoJun 30, 2026
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The only CDS/ECMWF dependency was the satellite-land-cover download. The 2016+ C3S land-cover maps (baseline_year 2020) are CC-BY-4.0, so we now mirror the extracted lccs_class to Zenodo and fetch it with curl, removing the per-user Copernicus credential from all builds. - download_land_cover becomes a curl rule pulling the lccs_class file from the Zenodo record pinned by data.land_cover.zenodo_record (10.5281/ zenodo.21085632); extract_land_cover_class and the 2.2GB zip step are gone. - credentials gate now requires only usda (schema, secrets.py, secrets.yaml.example, solve_namespace validation stub, CI stubs). - add tools/zenodo_publish.py (reusable Zenodo REST publisher) and tools/mirror_land_cover.py (CDS download -> extract -> publish, with --no-publish review drafts and --publish-record finalize). The former download/extract scripts are kept as the library functions these import. - docs: data_sources.rst (CC-BY-4.0, Zenodo retrieval, redistributing- datasets section), introduction.rst, development.rst.
Drop references to the old Copernicus API-key requirement from config and docstring comments so they describe only the current Zenodo-mirror flow. The ecmwf-datastores-client is now used solely by tools/mirror_land_cover.py (run under the dev env), so move it out of the default build dependencies.
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This PR moves ESA land cover data to Zenodo; avoids the need for new users to set up their own Copernicus API key.