{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:PSLQIQMZYT6SJT4XDGRXSLWHEQ","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"8c3e4ead9610f594e7d18a9affb48efa284def0920fb6cc6dec287d20a943424","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/3.0/","primary_cat":"physics.ao-ph","submitted_at":"2013-01-17T10:13:44Z","title_canon_sha256":"f9aa85fa913fd6f8fb6b1d0e6a0fabfeb0372a76503d4f6c28db8553975b1885"},"schema_version":"1.0","source":{"id":"1301.4032","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1301.4032","created_at":"2026-05-18T03:29:06Z"},{"alias_kind":"arxiv_version","alias_value":"1301.4032v2","created_at":"2026-05-18T03:29:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1301.4032","created_at":"2026-05-18T03:29:06Z"},{"alias_kind":"pith_short_12","alias_value":"PSLQIQMZYT6S","created_at":"2026-05-18T12:27:57Z"},{"alias_kind":"pith_short_16","alias_value":"PSLQIQMZYT6SJT4X","created_at":"2026-05-18T12:27:57Z"},{"alias_kind":"pith_short_8","alias_value":"PSLQIQMZ","created_at":"2026-05-18T12:27:57Z"}],"graph_snapshots":[{"event_id":"sha256:73d54bd8b9f88dd95417e3c4b54569083646b26eafab0ff021e9c256a5e7d602","target":"graph","created_at":"2026-05-18T03:29:06Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"We present initial results of a study on the variability of wind speeds across Europe over the past 140 yr, making use of the recent Twentieth Century Reanalysis data set, which includes uncertainty estimates from an ensemble method of reanalysis. Maps of the means and standard deviations of daily wind speeds, and the Weibull-distribution parameters, show the expected features, such as the strong, highly-variable wind in the north-east Atlantic. We do not find any clear, strong long-term trends in wind speeds across Europe, and the variability between decades is large. We examine how different","authors_text":"Hazel E. Thornton, Philip E. Bett, Robin T. Clark","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/3.0/","primary_cat":"physics.ao-ph","submitted_at":"2013-01-17T10:13:44Z","title":"European wind variability over 140 yr"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1301.4032","kind":"arxiv","version":2},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:6e1efd0a2063e8461234f8da95299231146081521e386951cd63722cf1918b02","target":"record","created_at":"2026-05-18T03:29:06Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"8c3e4ead9610f594e7d18a9affb48efa284def0920fb6cc6dec287d20a943424","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/3.0/","primary_cat":"physics.ao-ph","submitted_at":"2013-01-17T10:13:44Z","title_canon_sha256":"f9aa85fa913fd6f8fb6b1d0e6a0fabfeb0372a76503d4f6c28db8553975b1885"},"schema_version":"1.0","source":{"id":"1301.4032","kind":"arxiv","version":2}},"canonical_sha256":"7c97044199c4fd24cf9719a3792ec7243786e2574c8d6c01bdac878f040e4a86","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7c97044199c4fd24cf9719a3792ec7243786e2574c8d6c01bdac878f040e4a86","first_computed_at":"2026-05-18T03:29:06.364030Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:29:06.364030Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Ypp1YxfcdDiPepSi671s5zW82ukfQaqgblFkp7/VaitYk2jlMBCm/SyV7kUNwTD1wth9RW3V5uCrfRcbLiczDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:29:06.364427Z","signed_message":"canonical_sha256_bytes"},"source_id":"1301.4032","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6e1efd0a2063e8461234f8da95299231146081521e386951cd63722cf1918b02","sha256:73d54bd8b9f88dd95417e3c4b54569083646b26eafab0ff021e9c256a5e7d602"],"state_sha256":"7fa5f5da5291394d5021db59d44bd16cdec62ba8ec6af9bbbea1f818d82841ea"}