{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:LF7CFGDQ44SNMI73E2R7L5CR4S","short_pith_number":"pith:LF7CFGDQ","canonical_record":{"source":{"id":"1709.08860","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ao-ph","submitted_at":"2017-09-26T06:54:30Z","cross_cats_sorted":["astro-ph.EP"],"title_canon_sha256":"1cce1c4b12da00e7a02b10cae06b2d0579152bdefb79a7187852fb5ebfd25f76","abstract_canon_sha256":"68855dba7f0ed75a6220dfbd99df0e5ec11754f4c4c8c772facda2fc3bd9faff"},"schema_version":"1.0"},"canonical_sha256":"597e229870e724d623fb26a3f5f451e4a612cc0399f30f877a7c9fd6ea7257a1","source":{"kind":"arxiv","id":"1709.08860","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1709.08860","created_at":"2026-05-18T00:34:21Z"},{"alias_kind":"arxiv_version","alias_value":"1709.08860v1","created_at":"2026-05-18T00:34:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1709.08860","created_at":"2026-05-18T00:34:21Z"},{"alias_kind":"pith_short_12","alias_value":"LF7CFGDQ44SN","created_at":"2026-05-18T12:31:28Z"},{"alias_kind":"pith_short_16","alias_value":"LF7CFGDQ44SNMI73","created_at":"2026-05-18T12:31:28Z"},{"alias_kind":"pith_short_8","alias_value":"LF7CFGDQ","created_at":"2026-05-18T12:31:28Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:LF7CFGDQ44SNMI73E2R7L5CR4S","target":"record","payload":{"canonical_record":{"source":{"id":"1709.08860","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ao-ph","submitted_at":"2017-09-26T06:54:30Z","cross_cats_sorted":["astro-ph.EP"],"title_canon_sha256":"1cce1c4b12da00e7a02b10cae06b2d0579152bdefb79a7187852fb5ebfd25f76","abstract_canon_sha256":"68855dba7f0ed75a6220dfbd99df0e5ec11754f4c4c8c772facda2fc3bd9faff"},"schema_version":"1.0"},"canonical_sha256":"597e229870e724d623fb26a3f5f451e4a612cc0399f30f877a7c9fd6ea7257a1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:34:21.701206Z","signature_b64":"iSPqLbT/SZ67OoctClOrDEKQ9ZvkV9/9LrMexFeH88zyMJH/9KIX3ect+37cX9LPRJ/H3bAtxnnQZ0mfWnKACw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"597e229870e724d623fb26a3f5f451e4a612cc0399f30f877a7c9fd6ea7257a1","last_reissued_at":"2026-05-18T00:34:21.700528Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:34:21.700528Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1709.08860","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":"2026-05-18T00:34:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ABRiK4DYlRRsdKpiLX9JQ/CALc5Bmni5uWJATQhCdybhfnu/+P20uRd7R5dXwz+/s1xMlGtA1TZGDpoAt13mDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T08:52:55.659191Z"},"content_sha256":"68e35c9025947ffdd0ff88eba34be73cfc802dce4548dccde885f62348ff7f95","schema_version":"1.0","event_id":"sha256:68e35c9025947ffdd0ff88eba34be73cfc802dce4548dccde885f62348ff7f95"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:LF7CFGDQ44SNMI73E2R7L5CR4S","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A Data Driven, Zero-Dimensional Time Delay Model with Radiative Forcing for Simulating Global Climate","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.EP"],"primary_cat":"physics.ao-ph","authors_text":"Dibyendu Nandy, Rajashik Tarafder","submitted_at":"2017-09-26T06:54:30Z","abstract_excerpt":"Several complicated non-linear models exist which simulate the physical processes leading to fluctuations in global climate. Some of these more advanced models use observations to constrain various parameters involved. However, they tend to be very computationally expensive. Also, the exact physical processes that affect the climate variations have not been completely comprehended. Therefore, to obtain an insight into global climate, we have developed a physically motivated reduced climate model. The model utilizes a novel mathematical formulation involving a non-linear delay differential equa"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1709.08860","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":"2026-05-18T00:34:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yBbtdmgrCMoE6QTAYwB8UsG2hiLSMmpScmmdyR2S7UbdxrwJRtjV/3fq9/8EwwtQDGr2zprYEgMK00OXMNHoCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T08:52:55.659869Z"},"content_sha256":"a75d30473beda08bd2496138b877ea19d07ed8ab7d6d1a05acd5c1846967233c","schema_version":"1.0","event_id":"sha256:a75d30473beda08bd2496138b877ea19d07ed8ab7d6d1a05acd5c1846967233c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LF7CFGDQ44SNMI73E2R7L5CR4S/bundle.json","state_url":"https://pith.science/pith/LF7CFGDQ44SNMI73E2R7L5CR4S/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LF7CFGDQ44SNMI73E2R7L5CR4S/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":"2026-05-25T08:52:55Z","links":{"resolver":"https://pith.science/pith/LF7CFGDQ44SNMI73E2R7L5CR4S","bundle":"https://pith.science/pith/LF7CFGDQ44SNMI73E2R7L5CR4S/bundle.json","state":"https://pith.science/pith/LF7CFGDQ44SNMI73E2R7L5CR4S/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LF7CFGDQ44SNMI73E2R7L5CR4S/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:LF7CFGDQ44SNMI73E2R7L5CR4S","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":"68855dba7f0ed75a6220dfbd99df0e5ec11754f4c4c8c772facda2fc3bd9faff","cross_cats_sorted":["astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ao-ph","submitted_at":"2017-09-26T06:54:30Z","title_canon_sha256":"1cce1c4b12da00e7a02b10cae06b2d0579152bdefb79a7187852fb5ebfd25f76"},"schema_version":"1.0","source":{"id":"1709.08860","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1709.08860","created_at":"2026-05-18T00:34:21Z"},{"alias_kind":"arxiv_version","alias_value":"1709.08860v1","created_at":"2026-05-18T00:34:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1709.08860","created_at":"2026-05-18T00:34:21Z"},{"alias_kind":"pith_short_12","alias_value":"LF7CFGDQ44SN","created_at":"2026-05-18T12:31:28Z"},{"alias_kind":"pith_short_16","alias_value":"LF7CFGDQ44SNMI73","created_at":"2026-05-18T12:31:28Z"},{"alias_kind":"pith_short_8","alias_value":"LF7CFGDQ","created_at":"2026-05-18T12:31:28Z"}],"graph_snapshots":[{"event_id":"sha256:a75d30473beda08bd2496138b877ea19d07ed8ab7d6d1a05acd5c1846967233c","target":"graph","created_at":"2026-05-18T00:34:21Z","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":"Several complicated non-linear models exist which simulate the physical processes leading to fluctuations in global climate. Some of these more advanced models use observations to constrain various parameters involved. However, they tend to be very computationally expensive. Also, the exact physical processes that affect the climate variations have not been completely comprehended. Therefore, to obtain an insight into global climate, we have developed a physically motivated reduced climate model. The model utilizes a novel mathematical formulation involving a non-linear delay differential equa","authors_text":"Dibyendu Nandy, Rajashik Tarafder","cross_cats":["astro-ph.EP"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ao-ph","submitted_at":"2017-09-26T06:54:30Z","title":"A Data Driven, Zero-Dimensional Time Delay Model with Radiative Forcing for Simulating Global Climate"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1709.08860","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":"sha256:68e35c9025947ffdd0ff88eba34be73cfc802dce4548dccde885f62348ff7f95","target":"record","created_at":"2026-05-18T00:34:21Z","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":"68855dba7f0ed75a6220dfbd99df0e5ec11754f4c4c8c772facda2fc3bd9faff","cross_cats_sorted":["astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ao-ph","submitted_at":"2017-09-26T06:54:30Z","title_canon_sha256":"1cce1c4b12da00e7a02b10cae06b2d0579152bdefb79a7187852fb5ebfd25f76"},"schema_version":"1.0","source":{"id":"1709.08860","kind":"arxiv","version":1}},"canonical_sha256":"597e229870e724d623fb26a3f5f451e4a612cc0399f30f877a7c9fd6ea7257a1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"597e229870e724d623fb26a3f5f451e4a612cc0399f30f877a7c9fd6ea7257a1","first_computed_at":"2026-05-18T00:34:21.700528Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:34:21.700528Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"iSPqLbT/SZ67OoctClOrDEKQ9ZvkV9/9LrMexFeH88zyMJH/9KIX3ect+37cX9LPRJ/H3bAtxnnQZ0mfWnKACw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:34:21.701206Z","signed_message":"canonical_sha256_bytes"},"source_id":"1709.08860","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:68e35c9025947ffdd0ff88eba34be73cfc802dce4548dccde885f62348ff7f95","sha256:a75d30473beda08bd2496138b877ea19d07ed8ab7d6d1a05acd5c1846967233c"],"state_sha256":"e7be175d55876c076522d0d75f9f9552e14d8faeea46ce84fd8ea105cdbc596f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ctRU4yVCAmVCwHQ1pYdAGJBLaHFs4rTJlDJjp24vCfPTUTXybfuiixjuLUITJ3Eb0QA5WuOMWef8A5l97LGiCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T08:52:55.663518Z","bundle_sha256":"3d50ac3e3323499b25cf3b7af614fc466ea7864cb2e4c0de0fd798b457f9a65a"}}