{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:OI5QMVDZ2EKXX3YNJOZE76HTRW","short_pith_number":"pith:OI5QMVDZ","canonical_record":{"source":{"id":"1710.02114","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-10-05T16:57:49Z","cross_cats_sorted":[],"title_canon_sha256":"1762b56d9cd812b05c532c9c7ba8bf17cac82663962dd12fcd82d5a39a2826dc","abstract_canon_sha256":"c70069ae39bdaee4c9822ae7fb9d5cfe8282467836ebd54287f79e3dba48e276"},"schema_version":"1.0"},"canonical_sha256":"723b065479d1157bef0d4bb24ff8f38db694602e4d613568c5a0e5d8b7efa708","source":{"kind":"arxiv","id":"1710.02114","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1710.02114","created_at":"2026-05-18T00:30:40Z"},{"alias_kind":"arxiv_version","alias_value":"1710.02114v1","created_at":"2026-05-18T00:30:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1710.02114","created_at":"2026-05-18T00:30:40Z"},{"alias_kind":"pith_short_12","alias_value":"OI5QMVDZ2EKX","created_at":"2026-05-18T12:31:34Z"},{"alias_kind":"pith_short_16","alias_value":"OI5QMVDZ2EKXX3YN","created_at":"2026-05-18T12:31:34Z"},{"alias_kind":"pith_short_8","alias_value":"OI5QMVDZ","created_at":"2026-05-18T12:31:34Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:OI5QMVDZ2EKXX3YNJOZE76HTRW","target":"record","payload":{"canonical_record":{"source":{"id":"1710.02114","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-10-05T16:57:49Z","cross_cats_sorted":[],"title_canon_sha256":"1762b56d9cd812b05c532c9c7ba8bf17cac82663962dd12fcd82d5a39a2826dc","abstract_canon_sha256":"c70069ae39bdaee4c9822ae7fb9d5cfe8282467836ebd54287f79e3dba48e276"},"schema_version":"1.0"},"canonical_sha256":"723b065479d1157bef0d4bb24ff8f38db694602e4d613568c5a0e5d8b7efa708","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:30:40.761054Z","signature_b64":"pqcRBFP/DE2q6wwADged+y3JL1lT/SP3PKKF7zRbIs5AahJJrfjU2lp0O0KiYLNvud8N5W1TGDb7RXoZ8g7sDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"723b065479d1157bef0d4bb24ff8f38db694602e4d613568c5a0e5d8b7efa708","last_reissued_at":"2026-05-18T00:30:40.760534Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:30:40.760534Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1710.02114","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":"2026-05-18T00:30:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xw3eq1QK4gIMzYKx8U2wtXy5dl97yi44g+34PNtC8sapuVh9AVDXaBTaoyG3yAb+HOEd+7D8DNpNfES2IRQyCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T11:21:44.643255Z"},"content_sha256":"630f29113803da839ee468451e8c24d9b1e3c3be8c7293bda85ed229201a80d0","schema_version":"1.0","event_id":"sha256:630f29113803da839ee468451e8c24d9b1e3c3be8c7293bda85ed229201a80d0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:OI5QMVDZ2EKXX3YNJOZE76HTRW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Variational estimation of the large scale time dependent meridional circulation in the Sun: proofs of concept with a solar mean field dynamo model","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Alexandre Fournier, Allan Sacha Brun, Ching Pui Hung, Laur\\`ene Jouve, Mustapha Zakari, Olivier Talagrand","submitted_at":"2017-10-05T16:57:49Z","abstract_excerpt":"We present in this work the development of a solar data assimilation method based on an axisymmetric mean field dynamo model and magnetic surface data, our mid-term goal is to predict the solar quasi cyclic activity. Here we focus on the ability of our algorithm to constrain the deep meridional circulation of the Sun based on solar magnetic observations. To that end, we develop a variational data assimilation technique. Within a given assimilation window, the assimilation procedure minimizes the differences between data and the forecast from the model, by finding an optimal meridional circulat"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1710.02114","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":"2026-05-18T00:30:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Kzo2apfaX2qiq5JH1wVBkaZPYsP0xgd9QcNpA0HggyKcuHfxhdDqMKOwoY0RvHUsW7yXD5K60pTHkTszBTl+CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T11:21:44.643620Z"},"content_sha256":"b1be702fd2382bced4db36958ff74d0aecfb1110b2c993d2225d7af96f7cd86a","schema_version":"1.0","event_id":"sha256:b1be702fd2382bced4db36958ff74d0aecfb1110b2c993d2225d7af96f7cd86a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OI5QMVDZ2EKXX3YNJOZE76HTRW/bundle.json","state_url":"https://pith.science/pith/OI5QMVDZ2EKXX3YNJOZE76HTRW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OI5QMVDZ2EKXX3YNJOZE76HTRW/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":"2026-06-03T11:21:44Z","links":{"resolver":"https://pith.science/pith/OI5QMVDZ2EKXX3YNJOZE76HTRW","bundle":"https://pith.science/pith/OI5QMVDZ2EKXX3YNJOZE76HTRW/bundle.json","state":"https://pith.science/pith/OI5QMVDZ2EKXX3YNJOZE76HTRW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OI5QMVDZ2EKXX3YNJOZE76HTRW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:OI5QMVDZ2EKXX3YNJOZE76HTRW","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":"c70069ae39bdaee4c9822ae7fb9d5cfe8282467836ebd54287f79e3dba48e276","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-10-05T16:57:49Z","title_canon_sha256":"1762b56d9cd812b05c532c9c7ba8bf17cac82663962dd12fcd82d5a39a2826dc"},"schema_version":"1.0","source":{"id":"1710.02114","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1710.02114","created_at":"2026-05-18T00:30:40Z"},{"alias_kind":"arxiv_version","alias_value":"1710.02114v1","created_at":"2026-05-18T00:30:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1710.02114","created_at":"2026-05-18T00:30:40Z"},{"alias_kind":"pith_short_12","alias_value":"OI5QMVDZ2EKX","created_at":"2026-05-18T12:31:34Z"},{"alias_kind":"pith_short_16","alias_value":"OI5QMVDZ2EKXX3YN","created_at":"2026-05-18T12:31:34Z"},{"alias_kind":"pith_short_8","alias_value":"OI5QMVDZ","created_at":"2026-05-18T12:31:34Z"}],"graph_snapshots":[{"event_id":"sha256:b1be702fd2382bced4db36958ff74d0aecfb1110b2c993d2225d7af96f7cd86a","target":"graph","created_at":"2026-05-18T00:30:40Z","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 in this work the development of a solar data assimilation method based on an axisymmetric mean field dynamo model and magnetic surface data, our mid-term goal is to predict the solar quasi cyclic activity. Here we focus on the ability of our algorithm to constrain the deep meridional circulation of the Sun based on solar magnetic observations. To that end, we develop a variational data assimilation technique. Within a given assimilation window, the assimilation procedure minimizes the differences between data and the forecast from the model, by finding an optimal meridional circulat","authors_text":"Alexandre Fournier, Allan Sacha Brun, Ching Pui Hung, Laur\\`ene Jouve, Mustapha Zakari, Olivier Talagrand","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-10-05T16:57:49Z","title":"Variational estimation of the large scale time dependent meridional circulation in the Sun: proofs of concept with a solar mean field dynamo model"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1710.02114","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":"sha256:630f29113803da839ee468451e8c24d9b1e3c3be8c7293bda85ed229201a80d0","target":"record","created_at":"2026-05-18T00:30:40Z","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":"c70069ae39bdaee4c9822ae7fb9d5cfe8282467836ebd54287f79e3dba48e276","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-10-05T16:57:49Z","title_canon_sha256":"1762b56d9cd812b05c532c9c7ba8bf17cac82663962dd12fcd82d5a39a2826dc"},"schema_version":"1.0","source":{"id":"1710.02114","kind":"arxiv","version":1}},"canonical_sha256":"723b065479d1157bef0d4bb24ff8f38db694602e4d613568c5a0e5d8b7efa708","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"723b065479d1157bef0d4bb24ff8f38db694602e4d613568c5a0e5d8b7efa708","first_computed_at":"2026-05-18T00:30:40.760534Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:30:40.760534Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"pqcRBFP/DE2q6wwADged+y3JL1lT/SP3PKKF7zRbIs5AahJJrfjU2lp0O0KiYLNvud8N5W1TGDb7RXoZ8g7sDw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:30:40.761054Z","signed_message":"canonical_sha256_bytes"},"source_id":"1710.02114","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:630f29113803da839ee468451e8c24d9b1e3c3be8c7293bda85ed229201a80d0","sha256:b1be702fd2382bced4db36958ff74d0aecfb1110b2c993d2225d7af96f7cd86a"],"state_sha256":"81580d1e363e0b0eb67e3e286d28b7b12c483844468d7d5675fd58d0eee10223"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"S0B7BMd+QfDKHSQKZZzSYXVPDwXWyexAFpXvY2HLvtX+vh1AYrI4cjr+g4zGhj4az59sqpmdwH7OVG8l6FNdAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T11:21:44.645527Z","bundle_sha256":"8173743322b9e2e78c3297e44fd35b814c27bcff70d698cc5728b009a6a23fed"}}