{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:KAFMJX35AVMXYATR7WSUFLVO7M","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":"c6a14ac2bd661e3adaf08bc879670714573613195b885f5aa5098e1f1333d735","cross_cats_sorted":["physics.data-an"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ao-ph","submitted_at":"2010-02-26T22:21:21Z","title_canon_sha256":"15ad3029fd7cc3d303d96cd474f7f4aa9ff281ee8a52a4b32b3a464b07a1f580"},"schema_version":"1.0","source":{"id":"1003.0028","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1003.0028","created_at":"2026-05-18T04:31:50Z"},{"alias_kind":"arxiv_version","alias_value":"1003.0028v1","created_at":"2026-05-18T04:31:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1003.0028","created_at":"2026-05-18T04:31:50Z"},{"alias_kind":"pith_short_12","alias_value":"KAFMJX35AVMX","created_at":"2026-05-18T12:26:09Z"},{"alias_kind":"pith_short_16","alias_value":"KAFMJX35AVMXYATR","created_at":"2026-05-18T12:26:09Z"},{"alias_kind":"pith_short_8","alias_value":"KAFMJX35","created_at":"2026-05-18T12:26:09Z"}],"graph_snapshots":[{"event_id":"sha256:fa0e15f421a89664c4d280e9cc5f64290824ca53c5c9e042c979c4d98e7f9e76","target":"graph","created_at":"2026-05-18T04:31:50Z","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 consider a highly idealized model for El Nino/Southern Oscillation (ENSO) variability, as introduced in an earlier paper. The model is governed by a delay differential equation for sea surface temperature in the Tropical Pacific, and it combines two key mechanisms that participate in ENSO dynamics: delayed negative feedback and seasonal forcing. We perform a theoretical and numerical study of the model in the three-dimensional space of its physically relevant parameters: propagation period of oceanic waves across the Tropical Pacific, atmosphere-ocean coupling, and strength of seasonal forc","authors_text":"Ilya Zaliapin, Michael Ghil","cross_cats":["physics.data-an"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ao-ph","submitted_at":"2010-02-26T22:21:21Z","title":"A delay differential model of ENSO variability, Part 2: Phase locking, multiple solutions, and dynamics of extrema"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1003.0028","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:aa832adb9f92a80c68898868040dc4e0236d3461ebb124a2b6dadf185b8d7658","target":"record","created_at":"2026-05-18T04:31:50Z","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":"c6a14ac2bd661e3adaf08bc879670714573613195b885f5aa5098e1f1333d735","cross_cats_sorted":["physics.data-an"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ao-ph","submitted_at":"2010-02-26T22:21:21Z","title_canon_sha256":"15ad3029fd7cc3d303d96cd474f7f4aa9ff281ee8a52a4b32b3a464b07a1f580"},"schema_version":"1.0","source":{"id":"1003.0028","kind":"arxiv","version":1}},"canonical_sha256":"500ac4df7d05597c0271fda542aeaefb38db7266c16ad14102f28d31c575bc2a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"500ac4df7d05597c0271fda542aeaefb38db7266c16ad14102f28d31c575bc2a","first_computed_at":"2026-05-18T04:31:50.461036Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:31:50.461036Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ZX/0tVFS28aUvvMhTb9enTtZ+L7hBPDZdj+QYIfWTYRWuRGFO1ML1DR3V9GUkB+nksv/ExdKCRRlSOM9oQS3Bg==","signature_status":"signed_v1","signed_at":"2026-05-18T04:31:50.461602Z","signed_message":"canonical_sha256_bytes"},"source_id":"1003.0028","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:aa832adb9f92a80c68898868040dc4e0236d3461ebb124a2b6dadf185b8d7658","sha256:fa0e15f421a89664c4d280e9cc5f64290824ca53c5c9e042c979c4d98e7f9e76"],"state_sha256":"cf912a0f40de16a1aec9f5b8a13067a9d3f827b89fd59e1c50d8025547eca24e"}