{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:3G2ZQRBNA2NDVWNLFA2Z3FPUAV","short_pith_number":"pith:3G2ZQRBN","canonical_record":{"source":{"id":"2407.00137","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"physics.space-ph","submitted_at":"2024-06-28T14:05:47Z","cross_cats_sorted":["physics.ao-ph"],"title_canon_sha256":"1036934211dca995079784a18548f73adb680f223df065b81d55fb381297deed","abstract_canon_sha256":"9da70db7f4448bdb8307a008914fcc080f601bd96ba377fa436bce8c72115f99"},"schema_version":"1.0"},"canonical_sha256":"d9b598442d069a3ad9ab28359d95f4054dfa9d64f67111fe9f0df40b1bcaec5c","source":{"kind":"arxiv","id":"2407.00137","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2407.00137","created_at":"2026-07-05T08:38:39Z"},{"alias_kind":"arxiv_version","alias_value":"2407.00137v1","created_at":"2026-07-05T08:38:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2407.00137","created_at":"2026-07-05T08:38:39Z"},{"alias_kind":"pith_short_12","alias_value":"3G2ZQRBNA2ND","created_at":"2026-07-05T08:38:39Z"},{"alias_kind":"pith_short_16","alias_value":"3G2ZQRBNA2NDVWNL","created_at":"2026-07-05T08:38:39Z"},{"alias_kind":"pith_short_8","alias_value":"3G2ZQRBN","created_at":"2026-07-05T08:38:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:3G2ZQRBNA2NDVWNLFA2Z3FPUAV","target":"record","payload":{"canonical_record":{"source":{"id":"2407.00137","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"physics.space-ph","submitted_at":"2024-06-28T14:05:47Z","cross_cats_sorted":["physics.ao-ph"],"title_canon_sha256":"1036934211dca995079784a18548f73adb680f223df065b81d55fb381297deed","abstract_canon_sha256":"9da70db7f4448bdb8307a008914fcc080f601bd96ba377fa436bce8c72115f99"},"schema_version":"1.0"},"canonical_sha256":"d9b598442d069a3ad9ab28359d95f4054dfa9d64f67111fe9f0df40b1bcaec5c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T08:38:39.984482Z","signature_b64":"8llZBXqqubcBKIfEZnq+9G6i8cgq3XgRWMoKHPqJDsd5lgU7GOrQk2UciApBS74Edad0g3PV9lvR8joLq208Cg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d9b598442d069a3ad9ab28359d95f4054dfa9d64f67111fe9f0df40b1bcaec5c","last_reissued_at":"2026-07-05T08:38:39.984075Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T08:38:39.984075Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2407.00137","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":"2026-07-05T08:38:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1g0U7F8p+Azo2XDD9Fse8GsuYfldspk8V8nW4YNkS9VkgKDwVqyw6a7Ui0K1RGzx4G7/VLmWXgwlV/pKTuAvCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T05:56:12.621794Z"},"content_sha256":"335d68ee42f4c7548c569c477ec920384a463ca8c316462ee0842a700fbb6087","schema_version":"1.0","event_id":"sha256:335d68ee42f4c7548c569c477ec920384a463ca8c316462ee0842a700fbb6087"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:3G2ZQRBNA2NDVWNLFA2Z3FPUAV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Understanding and Modeling the Dynamics of Storm-time Atmospheric Neutral Density using Random Forests","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":["physics.ao-ph"],"primary_cat":"physics.space-ph","authors_text":"Alexa J. Halford, I. Jonathan Rae, Jeffery Klenzing, Jonathon Smith, Joshua Pettit, Katherine Garcia-Sage, Kyle R. Murphy, Vivian Liu","submitted_at":"2024-06-28T14:05:47Z","abstract_excerpt":"Atmospheric neutral density is a crucial component to accurately predict and track the motion of satellites. During periods of elevated solar and geomagnetic activity atmospheric neutral density becomes highly variable and dynamic. This variability and enhanced dynamics make it difficult to accurately model neutral density leading to increased errors which propagate from neutral density models through to orbit propagation models. In this paper we investigate the dynamics of neutral density during geomagnetic storms. We use a combination of solar and geomagnetic variables to develop three Rando"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2407.00137","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2407.00137/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T08:38:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SYIlKDYKVVsKyWI+FWwU6qK1elXDY3YFiej48oU6+VfS9wc+CiO1MkRaKNqHmWSL++nJiS/wOrG0qKFQguojBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T05:56:12.622181Z"},"content_sha256":"12f545a957dd58e04dc1b8f25edd3b16642e7c59d61ffd9b34ab7ac481633683","schema_version":"1.0","event_id":"sha256:12f545a957dd58e04dc1b8f25edd3b16642e7c59d61ffd9b34ab7ac481633683"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/3G2ZQRBNA2NDVWNLFA2Z3FPUAV/bundle.json","state_url":"https://pith.science/pith/3G2ZQRBNA2NDVWNLFA2Z3FPUAV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/3G2ZQRBNA2NDVWNLFA2Z3FPUAV/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":"2026-07-07T05:56:12Z","links":{"resolver":"https://pith.science/pith/3G2ZQRBNA2NDVWNLFA2Z3FPUAV","bundle":"https://pith.science/pith/3G2ZQRBNA2NDVWNLFA2Z3FPUAV/bundle.json","state":"https://pith.science/pith/3G2ZQRBNA2NDVWNLFA2Z3FPUAV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/3G2ZQRBNA2NDVWNLFA2Z3FPUAV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:3G2ZQRBNA2NDVWNLFA2Z3FPUAV","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":"9da70db7f4448bdb8307a008914fcc080f601bd96ba377fa436bce8c72115f99","cross_cats_sorted":["physics.ao-ph"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"physics.space-ph","submitted_at":"2024-06-28T14:05:47Z","title_canon_sha256":"1036934211dca995079784a18548f73adb680f223df065b81d55fb381297deed"},"schema_version":"1.0","source":{"id":"2407.00137","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2407.00137","created_at":"2026-07-05T08:38:39Z"},{"alias_kind":"arxiv_version","alias_value":"2407.00137v1","created_at":"2026-07-05T08:38:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2407.00137","created_at":"2026-07-05T08:38:39Z"},{"alias_kind":"pith_short_12","alias_value":"3G2ZQRBNA2ND","created_at":"2026-07-05T08:38:39Z"},{"alias_kind":"pith_short_16","alias_value":"3G2ZQRBNA2NDVWNL","created_at":"2026-07-05T08:38:39Z"},{"alias_kind":"pith_short_8","alias_value":"3G2ZQRBN","created_at":"2026-07-05T08:38:39Z"}],"graph_snapshots":[{"event_id":"sha256:12f545a957dd58e04dc1b8f25edd3b16642e7c59d61ffd9b34ab7ac481633683","target":"graph","created_at":"2026-07-05T08:38:39Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2407.00137/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Atmospheric neutral density is a crucial component to accurately predict and track the motion of satellites. During periods of elevated solar and geomagnetic activity atmospheric neutral density becomes highly variable and dynamic. This variability and enhanced dynamics make it difficult to accurately model neutral density leading to increased errors which propagate from neutral density models through to orbit propagation models. In this paper we investigate the dynamics of neutral density during geomagnetic storms. We use a combination of solar and geomagnetic variables to develop three Rando","authors_text":"Alexa J. Halford, I. Jonathan Rae, Jeffery Klenzing, Jonathon Smith, Joshua Pettit, Katherine Garcia-Sage, Kyle R. Murphy, Vivian Liu","cross_cats":["physics.ao-ph"],"headline":"","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"physics.space-ph","submitted_at":"2024-06-28T14:05:47Z","title":"Understanding and Modeling the Dynamics of Storm-time Atmospheric Neutral Density using Random Forests"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2407.00137","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":"sha256:335d68ee42f4c7548c569c477ec920384a463ca8c316462ee0842a700fbb6087","target":"record","created_at":"2026-07-05T08:38:39Z","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":"9da70db7f4448bdb8307a008914fcc080f601bd96ba377fa436bce8c72115f99","cross_cats_sorted":["physics.ao-ph"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"physics.space-ph","submitted_at":"2024-06-28T14:05:47Z","title_canon_sha256":"1036934211dca995079784a18548f73adb680f223df065b81d55fb381297deed"},"schema_version":"1.0","source":{"id":"2407.00137","kind":"arxiv","version":1}},"canonical_sha256":"d9b598442d069a3ad9ab28359d95f4054dfa9d64f67111fe9f0df40b1bcaec5c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d9b598442d069a3ad9ab28359d95f4054dfa9d64f67111fe9f0df40b1bcaec5c","first_computed_at":"2026-07-05T08:38:39.984075Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T08:38:39.984075Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"8llZBXqqubcBKIfEZnq+9G6i8cgq3XgRWMoKHPqJDsd5lgU7GOrQk2UciApBS74Edad0g3PV9lvR8joLq208Cg==","signature_status":"signed_v1","signed_at":"2026-07-05T08:38:39.984482Z","signed_message":"canonical_sha256_bytes"},"source_id":"2407.00137","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:335d68ee42f4c7548c569c477ec920384a463ca8c316462ee0842a700fbb6087","sha256:12f545a957dd58e04dc1b8f25edd3b16642e7c59d61ffd9b34ab7ac481633683"],"state_sha256":"7d6c52034974c83ef2ec739c1dcdd9cf83ec8878094303451dacc18dfee19c40"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"th3deZUVXbZ2PNRYn/bWxxmG7U0AKu/6EUJGXcYtTBvPbt8zgKX/nLljFi91zB/ulap0Ut5JmiW33iCD2He5AQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T05:56:12.624480Z","bundle_sha256":"7c2e44c6dd5fa515e57a7f15cd29efc0b61a8985931e3f52b0608cb230615dbb"}}