{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:Q25MHKRCRJWPFYLYPW5SB5ZYY3","short_pith_number":"pith:Q25MHKRC","canonical_record":{"source":{"id":"1907.10173","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.AP","submitted_at":"2019-07-23T23:18:38Z","cross_cats_sorted":["physics.ao-ph"],"title_canon_sha256":"4c09892adab72a3dc6b32bfb9d565a3469f89b9f9578a8c055c5a97365c1bebf","abstract_canon_sha256":"3cde111038207900d2c9d6db091c94920701ccb24f1c9296caa868b6dbf79c28"},"schema_version":"1.0"},"canonical_sha256":"86bac3aa228a6cf2e1787dbb20f738c6ecb1bfeeb76dfaf9ca699f4fb3a71784","source":{"kind":"arxiv","id":"1907.10173","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.10173","created_at":"2026-05-17T23:39:38Z"},{"alias_kind":"arxiv_version","alias_value":"1907.10173v1","created_at":"2026-05-17T23:39:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.10173","created_at":"2026-05-17T23:39:38Z"},{"alias_kind":"pith_short_12","alias_value":"Q25MHKRCRJWP","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_16","alias_value":"Q25MHKRCRJWPFYLY","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_8","alias_value":"Q25MHKRC","created_at":"2026-05-18T12:33:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:Q25MHKRCRJWPFYLYPW5SB5ZYY3","target":"record","payload":{"canonical_record":{"source":{"id":"1907.10173","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.AP","submitted_at":"2019-07-23T23:18:38Z","cross_cats_sorted":["physics.ao-ph"],"title_canon_sha256":"4c09892adab72a3dc6b32bfb9d565a3469f89b9f9578a8c055c5a97365c1bebf","abstract_canon_sha256":"3cde111038207900d2c9d6db091c94920701ccb24f1c9296caa868b6dbf79c28"},"schema_version":"1.0"},"canonical_sha256":"86bac3aa228a6cf2e1787dbb20f738c6ecb1bfeeb76dfaf9ca699f4fb3a71784","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:39:38.792418Z","signature_b64":"5z8WnFTthbnKg0THJBmJgmMhn2qKH5/zYAvNTjQ9M1soGOZ2aG02dIoAFZNLvR/9Bh2i+revkzAWHQ4HAQMnBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"86bac3aa228a6cf2e1787dbb20f738c6ecb1bfeeb76dfaf9ca699f4fb3a71784","last_reissued_at":"2026-05-17T23:39:38.791846Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:39:38.791846Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1907.10173","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:39:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Tqp7ZRaf2QBzzztD07Lrs/rg1ViW7WqmUrAidlBdbkzsS65mjZ418g7xvz+N1QrnUKvyzDVlV8QQieqteBu5BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-12T09:51:11.881367Z"},"content_sha256":"e8fad5fb8f59816934d9e3c8a93609cce5292129eed9f97da15f059d5aa0777f","schema_version":"1.0","event_id":"sha256:e8fad5fb8f59816934d9e3c8a93609cce5292129eed9f97da15f059d5aa0777f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:Q25MHKRCRJWPFYLYPW5SB5ZYY3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Uncertainty in the MAN Data Calibration & Trend Estimates","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.ao-ph"],"primary_cat":"stat.AP","authors_text":"Jaap Hanekamp, William M. Briggs","submitted_at":"2019-07-23T23:18:38Z","abstract_excerpt":"We investigate trend identification in the LML and MAN atmospheric ammonia data. The signals are mixed in the LML data, with just as many positive, negative, and no trends found. The start date for trend identification is crucial, with the trends claimed changing sign and significance depending on the start date. The MAN data is calibrated to the LML data. This calibration introduces uncertainty never heretofore accounted for in any downstream analysis, such as identifying trends. We introduce a method to do this, and find that the number of trends identified in the MAN data drop by about 50%."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.10173","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:39:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/1SdRshnfZeEq2NYZEgd58xAHvg4Jy5WN/4VoRsTUD7nTZGPB3Ib4ITscDeYp6hifNEUOcwoOeVJlhmGk0/rDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-12T09:51:11.881725Z"},"content_sha256":"c47a1c5c6d2004becfb667ebb73db9561183aa5328efa361a9a221723ae70a8a","schema_version":"1.0","event_id":"sha256:c47a1c5c6d2004becfb667ebb73db9561183aa5328efa361a9a221723ae70a8a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Q25MHKRCRJWPFYLYPW5SB5ZYY3/bundle.json","state_url":"https://pith.science/pith/Q25MHKRCRJWPFYLYPW5SB5ZYY3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Q25MHKRCRJWPFYLYPW5SB5ZYY3/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-12T09:51:11Z","links":{"resolver":"https://pith.science/pith/Q25MHKRCRJWPFYLYPW5SB5ZYY3","bundle":"https://pith.science/pith/Q25MHKRCRJWPFYLYPW5SB5ZYY3/bundle.json","state":"https://pith.science/pith/Q25MHKRCRJWPFYLYPW5SB5ZYY3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Q25MHKRCRJWPFYLYPW5SB5ZYY3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:Q25MHKRCRJWPFYLYPW5SB5ZYY3","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":"3cde111038207900d2c9d6db091c94920701ccb24f1c9296caa868b6dbf79c28","cross_cats_sorted":["physics.ao-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.AP","submitted_at":"2019-07-23T23:18:38Z","title_canon_sha256":"4c09892adab72a3dc6b32bfb9d565a3469f89b9f9578a8c055c5a97365c1bebf"},"schema_version":"1.0","source":{"id":"1907.10173","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.10173","created_at":"2026-05-17T23:39:38Z"},{"alias_kind":"arxiv_version","alias_value":"1907.10173v1","created_at":"2026-05-17T23:39:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.10173","created_at":"2026-05-17T23:39:38Z"},{"alias_kind":"pith_short_12","alias_value":"Q25MHKRCRJWP","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_16","alias_value":"Q25MHKRCRJWPFYLY","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_8","alias_value":"Q25MHKRC","created_at":"2026-05-18T12:33:24Z"}],"graph_snapshots":[{"event_id":"sha256:c47a1c5c6d2004becfb667ebb73db9561183aa5328efa361a9a221723ae70a8a","target":"graph","created_at":"2026-05-17T23:39:38Z","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 investigate trend identification in the LML and MAN atmospheric ammonia data. The signals are mixed in the LML data, with just as many positive, negative, and no trends found. The start date for trend identification is crucial, with the trends claimed changing sign and significance depending on the start date. The MAN data is calibrated to the LML data. This calibration introduces uncertainty never heretofore accounted for in any downstream analysis, such as identifying trends. We introduce a method to do this, and find that the number of trends identified in the MAN data drop by about 50%.","authors_text":"Jaap Hanekamp, William M. Briggs","cross_cats":["physics.ao-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.AP","submitted_at":"2019-07-23T23:18:38Z","title":"Uncertainty in the MAN Data Calibration & Trend Estimates"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.10173","kind":"arxiv","version":1},"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:e8fad5fb8f59816934d9e3c8a93609cce5292129eed9f97da15f059d5aa0777f","target":"record","created_at":"2026-05-17T23:39:38Z","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":"3cde111038207900d2c9d6db091c94920701ccb24f1c9296caa868b6dbf79c28","cross_cats_sorted":["physics.ao-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.AP","submitted_at":"2019-07-23T23:18:38Z","title_canon_sha256":"4c09892adab72a3dc6b32bfb9d565a3469f89b9f9578a8c055c5a97365c1bebf"},"schema_version":"1.0","source":{"id":"1907.10173","kind":"arxiv","version":1}},"canonical_sha256":"86bac3aa228a6cf2e1787dbb20f738c6ecb1bfeeb76dfaf9ca699f4fb3a71784","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"86bac3aa228a6cf2e1787dbb20f738c6ecb1bfeeb76dfaf9ca699f4fb3a71784","first_computed_at":"2026-05-17T23:39:38.791846Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:39:38.791846Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"5z8WnFTthbnKg0THJBmJgmMhn2qKH5/zYAvNTjQ9M1soGOZ2aG02dIoAFZNLvR/9Bh2i+revkzAWHQ4HAQMnBw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:39:38.792418Z","signed_message":"canonical_sha256_bytes"},"source_id":"1907.10173","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e8fad5fb8f59816934d9e3c8a93609cce5292129eed9f97da15f059d5aa0777f","sha256:c47a1c5c6d2004becfb667ebb73db9561183aa5328efa361a9a221723ae70a8a"],"state_sha256":"5fbd89ec078f4e97e365890a3fe68a2380434795a9e089d182f80046f394c5ba"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/EcU1OYu2df1+RFUAkTyPmyLtgCi9Sdcser4XD3yTZvOeXgwoYNMt/PpaKk6yEUvQdOn1VnJrKQI361GKMtvCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-12T09:51:11.883960Z","bundle_sha256":"b78919bf85aeb20ad44571f548db6803bf7c4502ae3dae47e67defd237b35817"}}