{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:75RCHLXKJAYTQRJ2LL7HO5TGRM","short_pith_number":"pith:75RCHLXK","canonical_record":{"source":{"id":"2605.23776","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ao-ph","submitted_at":"2026-05-22T15:43:25Z","cross_cats_sorted":[],"title_canon_sha256":"515481f1640136d50e7d68ce56217833ff2d8125ea8fa6b50c5372f78ecef6e6","abstract_canon_sha256":"f58c32e55e57e91f530d9711bd43dbc76961290c4fead4098a955e378723a9d9"},"schema_version":"1.0"},"canonical_sha256":"ff6223aeea483138453a5afe7776668b114e5fdccc5792d8d80aa6b9b0aff75d","source":{"kind":"arxiv","id":"2605.23776","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.23776","created_at":"2026-05-25T02:02:31Z"},{"alias_kind":"arxiv_version","alias_value":"2605.23776v1","created_at":"2026-05-25T02:02:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.23776","created_at":"2026-05-25T02:02:31Z"},{"alias_kind":"pith_short_12","alias_value":"75RCHLXKJAYT","created_at":"2026-05-25T02:02:31Z"},{"alias_kind":"pith_short_16","alias_value":"75RCHLXKJAYTQRJ2","created_at":"2026-05-25T02:02:31Z"},{"alias_kind":"pith_short_8","alias_value":"75RCHLXK","created_at":"2026-05-25T02:02:31Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:75RCHLXKJAYTQRJ2LL7HO5TGRM","target":"record","payload":{"canonical_record":{"source":{"id":"2605.23776","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ao-ph","submitted_at":"2026-05-22T15:43:25Z","cross_cats_sorted":[],"title_canon_sha256":"515481f1640136d50e7d68ce56217833ff2d8125ea8fa6b50c5372f78ecef6e6","abstract_canon_sha256":"f58c32e55e57e91f530d9711bd43dbc76961290c4fead4098a955e378723a9d9"},"schema_version":"1.0"},"canonical_sha256":"ff6223aeea483138453a5afe7776668b114e5fdccc5792d8d80aa6b9b0aff75d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-25T02:02:31.969677Z","signature_b64":"GDBaA0IT/Tcu1yk99trfQ9rd1RZQa/LMHhfT7WftsgmNKvZWM63betvAlM3asRpZgwOlG6irr/m2YXPqOzgYAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ff6223aeea483138453a5afe7776668b114e5fdccc5792d8d80aa6b9b0aff75d","last_reissued_at":"2026-05-25T02:02:31.968973Z","signature_status":"signed_v1","first_computed_at":"2026-05-25T02:02:31.968973Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2605.23776","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":"2026-05-25T02:02:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"l3ruS39adn8pFWNCMdGlx/GDSuDxtxrfFhpD6XT8RlweRfijl4ajUusdfMUtnLHyhtKRe58e8ETJFWh5CLt1CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T05:17:55.374590Z"},"content_sha256":"9d20e2f301b63a2fe532b2c549f3c1d898c303b3173ef106de9a95d5bdd83c27","schema_version":"1.0","event_id":"sha256:9d20e2f301b63a2fe532b2c549f3c1d898c303b3173ef106de9a95d5bdd83c27"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:75RCHLXKJAYTQRJ2LL7HO5TGRM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Precipitation diffusion downscaling and application to out-of-distribution simulations with and without stratospheric aerosol injection","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"physics.ao-ph","authors_text":"Cameron Dong, Elizabeth A. Barnes, James W. Hurrell","submitted_at":"2026-05-22T15:43:25Z","abstract_excerpt":"Stratospheric aerosol injection (SAI), a possible climate engineering strategy where reflective particles are injected into the stratosphere, has been explored to mitigate global warming and its associated risks, such as the intensification of extreme precipitation events. However, current Earth system models (ESMs) often used to simulate SAI and other climate change scenarios are too coarse to properly assess such risks. Traditional statistical downscaling methods, used to project higher resolution impacts, may be biased and unrealistic. To address this, we train a deep learning diffusion dow"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.23776","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/2605.23776/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":"2026-05-25T02:02:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"48r/JauvHpTTkA1otfFfC7bfFttLByOFgXK++e9nrKR2j7+TamXXuVYRaqiSxqZyiPngcIv+HYldHhKKZMArCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T05:17:55.374975Z"},"content_sha256":"298995e34d79961690a69c96c875bc840ad05eb3f9ffde3892a645db810a14dd","schema_version":"1.0","event_id":"sha256:298995e34d79961690a69c96c875bc840ad05eb3f9ffde3892a645db810a14dd"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/75RCHLXKJAYTQRJ2LL7HO5TGRM/bundle.json","state_url":"https://pith.science/pith/75RCHLXKJAYTQRJ2LL7HO5TGRM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/75RCHLXKJAYTQRJ2LL7HO5TGRM/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":"2026-05-26T05:17:55Z","links":{"resolver":"https://pith.science/pith/75RCHLXKJAYTQRJ2LL7HO5TGRM","bundle":"https://pith.science/pith/75RCHLXKJAYTQRJ2LL7HO5TGRM/bundle.json","state":"https://pith.science/pith/75RCHLXKJAYTQRJ2LL7HO5TGRM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/75RCHLXKJAYTQRJ2LL7HO5TGRM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:75RCHLXKJAYTQRJ2LL7HO5TGRM","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":"f58c32e55e57e91f530d9711bd43dbc76961290c4fead4098a955e378723a9d9","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ao-ph","submitted_at":"2026-05-22T15:43:25Z","title_canon_sha256":"515481f1640136d50e7d68ce56217833ff2d8125ea8fa6b50c5372f78ecef6e6"},"schema_version":"1.0","source":{"id":"2605.23776","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.23776","created_at":"2026-05-25T02:02:31Z"},{"alias_kind":"arxiv_version","alias_value":"2605.23776v1","created_at":"2026-05-25T02:02:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.23776","created_at":"2026-05-25T02:02:31Z"},{"alias_kind":"pith_short_12","alias_value":"75RCHLXKJAYT","created_at":"2026-05-25T02:02:31Z"},{"alias_kind":"pith_short_16","alias_value":"75RCHLXKJAYTQRJ2","created_at":"2026-05-25T02:02:31Z"},{"alias_kind":"pith_short_8","alias_value":"75RCHLXK","created_at":"2026-05-25T02:02:31Z"}],"graph_snapshots":[{"event_id":"sha256:298995e34d79961690a69c96c875bc840ad05eb3f9ffde3892a645db810a14dd","target":"graph","created_at":"2026-05-25T02:02:31Z","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/2605.23776/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Stratospheric aerosol injection (SAI), a possible climate engineering strategy where reflective particles are injected into the stratosphere, has been explored to mitigate global warming and its associated risks, such as the intensification of extreme precipitation events. However, current Earth system models (ESMs) often used to simulate SAI and other climate change scenarios are too coarse to properly assess such risks. Traditional statistical downscaling methods, used to project higher resolution impacts, may be biased and unrealistic. To address this, we train a deep learning diffusion dow","authors_text":"Cameron Dong, Elizabeth A. Barnes, James W. Hurrell","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ao-ph","submitted_at":"2026-05-22T15:43:25Z","title":"Precipitation diffusion downscaling and application to out-of-distribution simulations with and without stratospheric aerosol injection"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.23776","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":"sha256:9d20e2f301b63a2fe532b2c549f3c1d898c303b3173ef106de9a95d5bdd83c27","target":"record","created_at":"2026-05-25T02:02:31Z","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":"f58c32e55e57e91f530d9711bd43dbc76961290c4fead4098a955e378723a9d9","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ao-ph","submitted_at":"2026-05-22T15:43:25Z","title_canon_sha256":"515481f1640136d50e7d68ce56217833ff2d8125ea8fa6b50c5372f78ecef6e6"},"schema_version":"1.0","source":{"id":"2605.23776","kind":"arxiv","version":1}},"canonical_sha256":"ff6223aeea483138453a5afe7776668b114e5fdccc5792d8d80aa6b9b0aff75d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ff6223aeea483138453a5afe7776668b114e5fdccc5792d8d80aa6b9b0aff75d","first_computed_at":"2026-05-25T02:02:31.968973Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-25T02:02:31.968973Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"GDBaA0IT/Tcu1yk99trfQ9rd1RZQa/LMHhfT7WftsgmNKvZWM63betvAlM3asRpZgwOlG6irr/m2YXPqOzgYAg==","signature_status":"signed_v1","signed_at":"2026-05-25T02:02:31.969677Z","signed_message":"canonical_sha256_bytes"},"source_id":"2605.23776","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9d20e2f301b63a2fe532b2c549f3c1d898c303b3173ef106de9a95d5bdd83c27","sha256:298995e34d79961690a69c96c875bc840ad05eb3f9ffde3892a645db810a14dd"],"state_sha256":"bf02bfd72c74b6160da7042ec68d0a4fa5eefaaa6624ab98aebe9261b0f66c63"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"I2SvFKWGqi455UmWFdrS9MTMH9sjcns8xYeId7Mv3ucAhAnKDx+0g9vQTADaJym6KH7Z6wcCto4MubPIguk5Aw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T05:17:55.377220Z","bundle_sha256":"54c821d720fb604373ff78903c7777eb9e65744a7c895426822b3d99d7fba1bf"}}