{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:QA4BEPKFAIZ3QOXI6X2TE2EYGX","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":"46b49f24453b9f9fd0e722eb7b467d43107c43e37cdb216f0a1717a3df283007","cross_cats_sorted":["physics.ao-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.AP","submitted_at":"2018-07-11T14:52:44Z","title_canon_sha256":"cb21939f4b566f5a23ee74c5df53295b9f2faa5360790f94c598c8925d55a599"},"schema_version":"1.0","source":{"id":"1807.04177","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1807.04177","created_at":"2026-05-17T23:51:33Z"},{"alias_kind":"arxiv_version","alias_value":"1807.04177v2","created_at":"2026-05-17T23:51:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.04177","created_at":"2026-05-17T23:51:33Z"},{"alias_kind":"pith_short_12","alias_value":"QA4BEPKFAIZ3","created_at":"2026-05-18T12:32:46Z"},{"alias_kind":"pith_short_16","alias_value":"QA4BEPKFAIZ3QOXI","created_at":"2026-05-18T12:32:46Z"},{"alias_kind":"pith_short_8","alias_value":"QA4BEPKF","created_at":"2026-05-18T12:32:46Z"}],"graph_snapshots":[{"event_id":"sha256:2338b52e7eb91f451ea1f98a46f039d0de4345ea1b609012b85242f370a2b063","target":"graph","created_at":"2026-05-17T23:51:33Z","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":"Gridded data products, for example interpolated daily measurements of precipitation from weather stations, are commonly used as a convenient substitute for direct observations because these products provide a spatially and temporally continuous and complete source of data. However, when the goal is to characterize climatological features of extreme precipitation over a spatial domain (e.g., a map of return values) at the native spatial scales of these phenomena, then gridded products may lead to incorrect conclusions because daily precipitation is a fractal field and hence any smoothing techni","authors_text":"Christopher J. Paciorek, Mark D. Risser, Michael F. Wehner, Travis A. O'Brien, William D. Collins","cross_cats":["physics.ao-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.AP","submitted_at":"2018-07-11T14:52:44Z","title":"A probabilistic gridded product for daily precipitation extremes over the United States"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.04177","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":"sha256:1da82ddebbd919c6d9345cf564f01ddc5e2e1b4f4e5fe3520329399a242c22e4","target":"record","created_at":"2026-05-17T23:51:33Z","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":"46b49f24453b9f9fd0e722eb7b467d43107c43e37cdb216f0a1717a3df283007","cross_cats_sorted":["physics.ao-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.AP","submitted_at":"2018-07-11T14:52:44Z","title_canon_sha256":"cb21939f4b566f5a23ee74c5df53295b9f2faa5360790f94c598c8925d55a599"},"schema_version":"1.0","source":{"id":"1807.04177","kind":"arxiv","version":2}},"canonical_sha256":"8038123d450233b83ae8f5f532689835c27bbfa6697125c7a69dbfd5f07fae22","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8038123d450233b83ae8f5f532689835c27bbfa6697125c7a69dbfd5f07fae22","first_computed_at":"2026-05-17T23:51:33.682298Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:51:33.682298Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"peFXqFinCOOv0z9F9zAmJPeHXa8iX7tk3HGvwSXRWvxy5KtFfD3+IOwwaKgcHr56mCJoO5/13xcpGmuRV0S7BQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:51:33.682985Z","signed_message":"canonical_sha256_bytes"},"source_id":"1807.04177","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1da82ddebbd919c6d9345cf564f01ddc5e2e1b4f4e5fe3520329399a242c22e4","sha256:2338b52e7eb91f451ea1f98a46f039d0de4345ea1b609012b85242f370a2b063"],"state_sha256":"34da24dcdb65e95d086b64cc7635f5ff8be7c246a40ba7ad1abf15f5b302546a"}