{ "format_version": "1", "case": "global-climate-archive", "title": "Find Canadian climate simulations", "question": "What historical near-surface air temperature output does ORNL index for CanESM5?", "mode": "recorded", "simulation": false, "registry_revision": "2026-11-09", "generated_at": null, "replay_clock": "2026-11-09T00:00:00Z", "timestamp_note": "Envelope retrieval timestamps use a fixed replay clock, not publisher retrieval times. Actual fixture capture times appear in the manifest; null means unrecorded.", "fixtures": [ { "file": "esgf-search.json", "sha256": "b48a40f84f831197b5621eeb120b6e8dac79c724b53ac5c3d6cebdfc6b2b8ce4", "captured_at": null } ], "answer": "The first returned CanESM5 dataset lists variant r12i1p2f1 and file version 20190429.", "limitations": [ "ORNL indexes model output from multiple institutions. The rows describe files; they contain no temperature readings." ], "steps": [ { "tool": "climate.search_cmip", "args": { "model": "CanESM5", "experiment": "historical", "variable": "tas", "rows": 5 }, "envelope": { "data": { "datasets": [ { "dataset_id": "CMIP6.CMIP.CCCma.CanESM5.historical.r12i1p2f1.Amon.tas.gn.v20190429", "project": "CMIP6", "model": "CanESM5", "institution": "CCCma", "experiment": "historical", "experiment_title": "all-forcing simulation of the recent past", "variables": [ "tas" ], "variable_long_names": [ "Near-Surface Air Temperature" ], "variable_units": [ "K" ], "frequency": "mon", "realm": "atmos", "nominal_resolution": "500 km", "grid_label": "gn", "variant_label": "r12i1p2f1", "version": "20190429", "covers": { "from": "1850-01-16T12:00:00Z", "to": "2014-12-16T12:00:00Z" }, "files": 1, "size_bytes": 52456974, "data_node": "esgf-node.ornl.gov", "access_methods": [ "HTTPServer", "GridFTP", "OPENDAP", "Globus", "LAS" ], "latest": true, "retracted": false, "replica": true }, { "dataset_id": "CMIP6.CMIP.CCCma.CanESM5.historical.r12i1p2f1.day.tas.gn.v20190429", "project": "CMIP6", "model": "CanESM5", "institution": "CCCma", "experiment": "historical", "experiment_title": "all-forcing simulation of the recent past", "variables": [ "tas" ], "variable_long_names": [ "Near-Surface Air Temperature" ], "variable_units": [ "K" ], "frequency": "day", "realm": "atmos", "nominal_resolution": "500 km", "grid_label": "gn", "variant_label": "r12i1p2f1", "version": "20190429", "covers": { "from": "1850-01-01T12:00:00Z", "to": "2014-12-31T12:00:00Z" }, "files": 1, "size_bytes": 1600967425, "data_node": "crd-esgf-drc.ec.gc.ca", "access_methods": [ "HTTPServer", "GridFTP", "OPENDAP", "LAS" ], "latest": true, "retracted": false, "replica": false }, { "dataset_id": "CMIP6.CMIP.CCCma.CanESM5.historical.r13i1p2f1.day.tas.gn.v20190429", "project": "CMIP6", "model": "CanESM5", "institution": "CCCma", "experiment": "historical", "experiment_title": "all-forcing simulation of the recent past", "variables": [ "tas" ], "variable_long_names": [ "Near-Surface Air Temperature" ], "variable_units": [ "K" ], "frequency": "day", "realm": "atmos", "nominal_resolution": "500 km", "grid_label": "gn", "variant_label": "r13i1p2f1", "version": "20190429", "covers": { "from": "1850-01-01T12:00:00Z", "to": "2014-11-21T12:00:00Z" }, "files": 1, "size_bytes": 1601062361, "data_node": "eagle.alcf.anl.gov", "access_methods": [ "HTTPServer", "Globus" ], "latest": true, "retracted": false, "replica": true }, { "dataset_id": "CMIP6.CMIP.CCCma.CanESM5.historical.r14i1p1f1.Amon.tas.gn.v20190429", "project": "CMIP6", "model": "CanESM5", "institution": "CCCma", "experiment": "historical", "experiment_title": "all-forcing simulation of the recent past", "variables": [ "tas" ], "variable_long_names": [ "Near-Surface Air Temperature" ], "variable_units": [ "K" ], "frequency": "mon", "realm": "atmos", "nominal_resolution": "500 km", "grid_label": "gn", "variant_label": "r14i1p1f1", "version": "20190429", "covers": { "from": "1850-01-16T12:00:00Z", "to": "2014-11-06T12:00:00Z" }, "files": 1, "size_bytes": 52453272, "data_node": "eagle.alcf.anl.gov", "access_methods": [ "HTTPServer", "Globus" ], "latest": true, "retracted": false, "replica": true }, { "dataset_id": "CMIP6.CMIP.CCCma.CanESM5.historical.r19i1p1f1.day.tas.gn.v20190429", "project": "CMIP6", "model": "CanESM5", "institution": "CCCma", "experiment": "historical", "experiment_title": "all-forcing simulation of the recent past", "variables": [ "tas" ], "variable_long_names": [ "Near-Surface Air Temperature" ], "variable_units": [ "K" ], "frequency": "day", "realm": "atmos", "nominal_resolution": "500 km", "grid_label": "gn", "variant_label": "r19i1p1f1", "version": "20190429", "covers": { "from": "1850-01-01T12:00:00Z", "to": "2014-12-31T12:00:00Z" }, "files": 1, "size_bytes": 1600914528, "data_node": "esgf-node.ornl.gov", "access_methods": [ "HTTPServer", "GridFTP", "OPENDAP", "Globus", "LAS" ], "latest": true, "retracted": false, "replica": true } ], "record_count": 5, "total_matches": 366, "offset": 0, "applied_filters": [ "type:Dataset", "experiment_id:\"historical\"", "project:\"CMIP6\"", "source_id:\"CanESM5\"", "variable_id:\"tas\"", "latest:True" ], "latest_only": true, "note": "Metadata for climate-model output, not the output itself: each record names the data node holding its files and the methods that node serves them by. Restricted to the latest version of each dataset unless include_superseded is set \u2014 the index holds retracted and superseded output and sorts it first otherwise. Walk climate.discover_facets for valid model, experiment, and variable names; a near-miss returns nothing rather than a suggestion." }, "provenance": [ { "id": "source_01", "source_id": "esgf-search", "steward": "Oak Ridge National Laboratory", "funder": "Office of Science", "system": "ESGF search (CMIP6)", "dataset": "ESGF search (CMIP6)", "dataset_version": "CMIP6", "authority_level": "official_secondary", "access_path": "live", "source_updated_at": null, "retrieved_at": "2026-11-09T00:00:00Z", "cache_age_seconds": 0 } ], "evidence": [ { "id": "evidence_01", "source_ref": "source_01", "record_id": "CMIP6.CMIP.CCCma.CanESM5.historical.r12i1p2f1.Amon.tas.gn.v20190429", "locator": "http://cera-www.dkrz.de/WDCC/meta/CMIP6/CMIP6.CMIP.CCCma.CanESM5.historical.r12i1p2f1.Amon.tas.gn.v20190429.json", "retrieved_at": "2026-11-09T00:00:00Z", "effective_at": "1850-01-16T12:00:00Z", "transformations": [], "payload_hash": null, "raw_recovery": "available" }, { "id": "evidence_02", "source_ref": "source_01", "record_id": "CMIP6.CMIP.CCCma.CanESM5.historical.r12i1p2f1.day.tas.gn.v20190429", "locator": "http://cera-www.dkrz.de/WDCC/meta/CMIP6/CMIP6.CMIP.CCCma.CanESM5.historical.r12i1p2f1.day.tas.gn.v20190429.json", "retrieved_at": "2026-11-09T00:00:00Z", "effective_at": "1850-01-01T12:00:00Z", "transformations": [], "payload_hash": null, "raw_recovery": "available" }, { "id": "evidence_03", "source_ref": "source_01", "record_id": "CMIP6.CMIP.CCCma.CanESM5.historical.r13i1p2f1.day.tas.gn.v20190429", "locator": "http://cera-www.dkrz.de/WDCC/meta/CMIP6/CMIP6.CMIP.CCCma.CanESM5.historical.r13i1p2f1.day.tas.gn.v20190429.json", "retrieved_at": "2026-11-09T00:00:00Z", "effective_at": "1850-01-01T12:00:00Z", "transformations": [], "payload_hash": null, "raw_recovery": "available" }, { "id": "evidence_04", "source_ref": "source_01", "record_id": "CMIP6.CMIP.CCCma.CanESM5.historical.r14i1p1f1.Amon.tas.gn.v20190429", "locator": "http://cera-www.dkrz.de/WDCC/meta/CMIP6/CMIP6.CMIP.CCCma.CanESM5.historical.r14i1p1f1.Amon.tas.gn.v20190429.json", "retrieved_at": "2026-11-09T00:00:00Z", "effective_at": "1850-01-16T12:00:00Z", "transformations": [], "payload_hash": null, "raw_recovery": "available" }, { "id": "evidence_05", "source_ref": "source_01", "record_id": "CMIP6.CMIP.CCCma.CanESM5.historical.r19i1p1f1.day.tas.gn.v20190429", "locator": "http://cera-www.dkrz.de/WDCC/meta/CMIP6/CMIP6.CMIP.CCCma.CanESM5.historical.r19i1p1f1.day.tas.gn.v20190429.json", "retrieved_at": "2026-11-09T00:00:00Z", "effective_at": "1850-01-01T12:00:00Z", "transformations": [], "payload_hash": null, "raw_recovery": "available" } ], "coverage": { "registry": "covered", "execution": "complete", "pagination": "truncated", "source_claim": "partial", "result": "hit", "sources_searched": [ "esgf-search" ], "known_limitations": [ "A catalog of metadata, not the model output. The files live on federated data nodes and are reached by the access methods each record names; several nodes require a federation account.", "Retracted and superseded datasets are in the index and sort first without the publisher's `latest` flag. A retraction is a modelling centre withdrawing output, often for a science error, so the flag is on by default here and both flags ride on every row.", "Paging stops at offset 9,999 against 14.7 million records. This archive is searched by narrowing facets, not by walking pages.", "Vintage identity is the whole game: CMIP5, CMIP6 and CMIP7 are different archives, and a comparison across them without saying so is the mixed-vintage error the envelope exists to catch.", "The index names one fact two ways. A dataset's last covered timestamp is datetime_stop on some records and datetime_end on others, in the same index on the same day. Both are read; a client reading one would report the end of the covered period as unknown for a large share of the archive." ] }, "warnings": [], "access_recipes": [ { "kind": "landing_page", "uri": "https://furtherinfo.es-doc.org/CMIP6.CCCma.CanESM5.historical.none.r12i1p2f1", "label": "CanESM5 historical documentation", "instructions": null, "requires_account": false, "approximate_size": null }, { "kind": "doi", "uri": "http://cera-www.dkrz.de/WDCC/meta/CMIP6/CMIP6.CMIP.CCCma.CanESM5.historical.r12i1p2f1.Amon.tas.gn.v20190429.json", "label": "Citation record for\u2026", "instructions": null, "requires_account": false, "approximate_size": null }, { "kind": "doi", "uri": "http://cera-www.dkrz.de/WDCC/meta/CMIP6/CMIP6.CMIP.CCCma.CanESM5.historical.r12i1p2f1.day.tas.gn.v20190429.json", "label": "Citation record for\u2026", "instructions": null, "requires_account": false, "approximate_size": null }, { "kind": "landing_page", "uri": "https://furtherinfo.es-doc.org/CMIP6.CCCma.CanESM5.historical.none.r13i1p2f1", "label": "CanESM5 historical documentation", "instructions": null, "requires_account": false, "approximate_size": null }, { "kind": "doi", "uri": "http://cera-www.dkrz.de/WDCC/meta/CMIP6/CMIP6.CMIP.CCCma.CanESM5.historical.r13i1p2f1.day.tas.gn.v20190429.json", "label": "Citation record for\u2026", "instructions": null, "requires_account": false, "approximate_size": null }, { "kind": "landing_page", "uri": "https://furtherinfo.es-doc.org/CMIP6.CCCma.CanESM5.historical.none.r14i1p1f1", "label": "CanESM5 historical documentation", "instructions": null, "requires_account": false, "approximate_size": null }, { "kind": "doi", "uri": "http://cera-www.dkrz.de/WDCC/meta/CMIP6/CMIP6.CMIP.CCCma.CanESM5.historical.r14i1p1f1.Amon.tas.gn.v20190429.json", "label": "Citation record for\u2026", "instructions": null, "requires_account": false, "approximate_size": null }, { "kind": "landing_page", "uri": "https://furtherinfo.es-doc.org/CMIP6.CCCma.CanESM5.historical.none.r19i1p1f1", "label": "CanESM5 historical documentation", "instructions": null, "requires_account": false, "approximate_size": null }, { "kind": "doi", "uri": "http://cera-www.dkrz.de/WDCC/meta/CMIP6/CMIP6.CMIP.CCCma.CanESM5.historical.r19i1p1f1.day.tas.gn.v20190429.json", "label": "Citation record for\u2026", "instructions": null, "requires_account": false, "approximate_size": null } ], "_execution": { "server": "doe-mcp", "server_version": "0.1.0.dev0", "tool": "climate.search_cmip", "tool_contract_version": "1", "envelope_version": "1", "adapters": { "osti_family": "1", "opendatasoft": "1", "json_document": "1", "curated": "1", "eia_v2": "1", "fueleconomy": "1", "text_feed": "1", "postgrest": "1", "federal_register": "1", "vips": "1", "daymet": "1", "essdive": "1", "esgf": "1", "sage": "1", "optimade": "1", "basis_sets": "1", "facility_status": "1", "gcam_csv": "1", "nmdc": "1", "none": "1", "self_registry": "1" }, "registry_revision": "2026-11-09", "request_id": "recorded-workflow" } } } ] }