{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:YNOR5Y2IJOGZUO3NR5UAXXM4DC","short_pith_number":"pith:YNOR5Y2I","canonical_record":{"source":{"id":"2009.12849","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SE","submitted_at":"2020-09-27T14:01:13Z","cross_cats_sorted":[],"title_canon_sha256":"5f6317aa341e8b2557e41adc22de49d788a1564e14f5b3979996a2fcc62c58b2","abstract_canon_sha256":"38e953fc2612269bc85bb513fff53a03cc6663ef72e04e0591c939d8c92a1c48"},"schema_version":"1.0"},"canonical_sha256":"c35d1ee3484b8d9a3b6d8f680bdd9c18a9c5fe8369b4edab6a7551acc116c640","source":{"kind":"arxiv","id":"2009.12849","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2009.12849","created_at":"2026-07-05T01:38:24Z"},{"alias_kind":"arxiv_version","alias_value":"2009.12849v1","created_at":"2026-07-05T01:38:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2009.12849","created_at":"2026-07-05T01:38:24Z"},{"alias_kind":"pith_short_12","alias_value":"YNOR5Y2IJOGZ","created_at":"2026-07-05T01:38:24Z"},{"alias_kind":"pith_short_16","alias_value":"YNOR5Y2IJOGZUO3N","created_at":"2026-07-05T01:38:24Z"},{"alias_kind":"pith_short_8","alias_value":"YNOR5Y2I","created_at":"2026-07-05T01:38:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:YNOR5Y2IJOGZUO3NR5UAXXM4DC","target":"record","payload":{"canonical_record":{"source":{"id":"2009.12849","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SE","submitted_at":"2020-09-27T14:01:13Z","cross_cats_sorted":[],"title_canon_sha256":"5f6317aa341e8b2557e41adc22de49d788a1564e14f5b3979996a2fcc62c58b2","abstract_canon_sha256":"38e953fc2612269bc85bb513fff53a03cc6663ef72e04e0591c939d8c92a1c48"},"schema_version":"1.0"},"canonical_sha256":"c35d1ee3484b8d9a3b6d8f680bdd9c18a9c5fe8369b4edab6a7551acc116c640","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:38:24.143091Z","signature_b64":"UOzpS1dmWQyyjOppudMn91BSWYDiGW2ad8K7XW+2T0BM1sjKYOYaTKvslIKYmbBstiX8Rhj94L0cS8AeZNRxBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c35d1ee3484b8d9a3b6d8f680bdd9c18a9c5fe8369b4edab6a7551acc116c640","last_reissued_at":"2026-07-05T01:38:24.142733Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:38:24.142733Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2009.12849","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":"2026-07-05T01:38:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oZoh9D0LMnQeYVKPGO71y5dG6MgcAd1zXexr1hrhOAiLqnCqdcIWcFY6pafUAopWI5vVLWguHDb47xbAKN/5BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T01:43:39.368014Z"},"content_sha256":"0677e427f236dfbd0c8d0e8bbf2be1896d5491c89075600c67fd313f9b6f6612","schema_version":"1.0","event_id":"sha256:0677e427f236dfbd0c8d0e8bbf2be1896d5491c89075600c67fd313f9b6f6612"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:YNOR5Y2IJOGZUO3NR5UAXXM4DC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A highly scalable Met Office NERC Cloud model","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.SE","authors_text":"Adrian Hill, Ben Shipway, Chris Maynard, Mich\\`ele Weiland, Mike Rezny, Nick Brown, Thomas Allen","submitted_at":"2020-09-27T14:01:13Z","abstract_excerpt":"Large Eddy Simulation is a critical modelling tool for scientists investigating atmospheric flows, turbulence and cloud microphysics. Within the UK, the principal LES model used by the atmospheric research community is the Met Office Large Eddy Model (LEM). The LEM was originally developed in the late 1980s using computational techniques and assumptions of the time, which means that the it does not scale beyond 512 cores. In this paper we present the Met Office NERC Cloud model, MONC, which is a re-write of the existing LEM. We discuss the software engineering and architectural decisions made "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2009.12849","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/2009.12849/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":"2026-07-05T01:38:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eqN7DthObzcWT5L2Ffbcq4lL/5xshbI06C+VfenzeUuOePddryeOeYFvULSZKNPct5ULgjM4aSUHtyiwA/6PBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T01:43:39.368925Z"},"content_sha256":"0dc32bc5a954b9e38e6385e27ce96e958d61e566d5feb76eb8405413359510a5","schema_version":"1.0","event_id":"sha256:0dc32bc5a954b9e38e6385e27ce96e958d61e566d5feb76eb8405413359510a5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YNOR5Y2IJOGZUO3NR5UAXXM4DC/bundle.json","state_url":"https://pith.science/pith/YNOR5Y2IJOGZUO3NR5UAXXM4DC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YNOR5Y2IJOGZUO3NR5UAXXM4DC/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":"2026-08-18T01:43:39Z","links":{"resolver":"https://pith.science/pith/YNOR5Y2IJOGZUO3NR5UAXXM4DC","bundle":"https://pith.science/pith/YNOR5Y2IJOGZUO3NR5UAXXM4DC/bundle.json","state":"https://pith.science/pith/YNOR5Y2IJOGZUO3NR5UAXXM4DC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YNOR5Y2IJOGZUO3NR5UAXXM4DC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:YNOR5Y2IJOGZUO3NR5UAXXM4DC","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":"38e953fc2612269bc85bb513fff53a03cc6663ef72e04e0591c939d8c92a1c48","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SE","submitted_at":"2020-09-27T14:01:13Z","title_canon_sha256":"5f6317aa341e8b2557e41adc22de49d788a1564e14f5b3979996a2fcc62c58b2"},"schema_version":"1.0","source":{"id":"2009.12849","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2009.12849","created_at":"2026-07-05T01:38:24Z"},{"alias_kind":"arxiv_version","alias_value":"2009.12849v1","created_at":"2026-07-05T01:38:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2009.12849","created_at":"2026-07-05T01:38:24Z"},{"alias_kind":"pith_short_12","alias_value":"YNOR5Y2IJOGZ","created_at":"2026-07-05T01:38:24Z"},{"alias_kind":"pith_short_16","alias_value":"YNOR5Y2IJOGZUO3N","created_at":"2026-07-05T01:38:24Z"},{"alias_kind":"pith_short_8","alias_value":"YNOR5Y2I","created_at":"2026-07-05T01:38:24Z"}],"graph_snapshots":[{"event_id":"sha256:0dc32bc5a954b9e38e6385e27ce96e958d61e566d5feb76eb8405413359510a5","target":"graph","created_at":"2026-07-05T01:38:24Z","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/2009.12849/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Large Eddy Simulation is a critical modelling tool for scientists investigating atmospheric flows, turbulence and cloud microphysics. Within the UK, the principal LES model used by the atmospheric research community is the Met Office Large Eddy Model (LEM). The LEM was originally developed in the late 1980s using computational techniques and assumptions of the time, which means that the it does not scale beyond 512 cores. In this paper we present the Met Office NERC Cloud model, MONC, which is a re-write of the existing LEM. We discuss the software engineering and architectural decisions made ","authors_text":"Adrian Hill, Ben Shipway, Chris Maynard, Mich\\`ele Weiland, Mike Rezny, Nick Brown, Thomas Allen","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SE","submitted_at":"2020-09-27T14:01:13Z","title":"A highly scalable Met Office NERC Cloud model"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2009.12849","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":"sha256:0677e427f236dfbd0c8d0e8bbf2be1896d5491c89075600c67fd313f9b6f6612","target":"record","created_at":"2026-07-05T01:38:24Z","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":"38e953fc2612269bc85bb513fff53a03cc6663ef72e04e0591c939d8c92a1c48","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SE","submitted_at":"2020-09-27T14:01:13Z","title_canon_sha256":"5f6317aa341e8b2557e41adc22de49d788a1564e14f5b3979996a2fcc62c58b2"},"schema_version":"1.0","source":{"id":"2009.12849","kind":"arxiv","version":1}},"canonical_sha256":"c35d1ee3484b8d9a3b6d8f680bdd9c18a9c5fe8369b4edab6a7551acc116c640","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c35d1ee3484b8d9a3b6d8f680bdd9c18a9c5fe8369b4edab6a7551acc116c640","first_computed_at":"2026-07-05T01:38:24.142733Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:38:24.142733Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"UOzpS1dmWQyyjOppudMn91BSWYDiGW2ad8K7XW+2T0BM1sjKYOYaTKvslIKYmbBstiX8Rhj94L0cS8AeZNRxBw==","signature_status":"signed_v1","signed_at":"2026-07-05T01:38:24.143091Z","signed_message":"canonical_sha256_bytes"},"source_id":"2009.12849","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0677e427f236dfbd0c8d0e8bbf2be1896d5491c89075600c67fd313f9b6f6612","sha256:0dc32bc5a954b9e38e6385e27ce96e958d61e566d5feb76eb8405413359510a5"],"state_sha256":"a751b06a27618f6dce2e3e19ccdbfaefb77bab5c508fe60aecf4c02b7be7ded9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iPQVtotW6+zrffRU+OA2Y7vSTJNk4BNoUkFNpsJ1Gwp5i645c0C0ZS1DTP3I17rIMASlUv1A+0moonyp5LCiAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-18T01:43:39.378396Z","bundle_sha256":"b57ce36c531ab6a8d91a1f235b50f463b174332f3d01062244bbb117dbfaeb34"}}