{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:7KDHVXQBJRPMKN7LWWP6BFF4OS","short_pith_number":"pith:7KDHVXQB","canonical_record":{"source":{"id":"1409.2062","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ao-ph","submitted_at":"2014-09-06T22:09:46Z","cross_cats_sorted":[],"title_canon_sha256":"f063cd8ecd55ee7b863f6137c2e161dea5f780383212c52111efd00ab80c6100","abstract_canon_sha256":"df068315fa3421ff074647aaf5150b3a93e2c8194f54b8ded814da73b16a0a26"},"schema_version":"1.0"},"canonical_sha256":"fa867ade014c5ec537ebb59fe094bc748e7c8dc6214e396d5492b6063ad48c7e","source":{"kind":"arxiv","id":"1409.2062","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1409.2062","created_at":"2026-05-18T02:43:17Z"},{"alias_kind":"arxiv_version","alias_value":"1409.2062v1","created_at":"2026-05-18T02:43:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1409.2062","created_at":"2026-05-18T02:43:17Z"},{"alias_kind":"pith_short_12","alias_value":"7KDHVXQBJRPM","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_16","alias_value":"7KDHVXQBJRPMKN7L","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_8","alias_value":"7KDHVXQB","created_at":"2026-05-18T12:28:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:7KDHVXQBJRPMKN7LWWP6BFF4OS","target":"record","payload":{"canonical_record":{"source":{"id":"1409.2062","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ao-ph","submitted_at":"2014-09-06T22:09:46Z","cross_cats_sorted":[],"title_canon_sha256":"f063cd8ecd55ee7b863f6137c2e161dea5f780383212c52111efd00ab80c6100","abstract_canon_sha256":"df068315fa3421ff074647aaf5150b3a93e2c8194f54b8ded814da73b16a0a26"},"schema_version":"1.0"},"canonical_sha256":"fa867ade014c5ec537ebb59fe094bc748e7c8dc6214e396d5492b6063ad48c7e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:43:17.995176Z","signature_b64":"IoQqT0yxIwQqxB6Rz6uV73B3pGfcRog3c1nJbDPNWspuVgtGccXdIwJsfk+lKuJnwrJ99WQzhO4Uaq6VQntcDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fa867ade014c5ec537ebb59fe094bc748e7c8dc6214e396d5492b6063ad48c7e","last_reissued_at":"2026-05-18T02:43:17.994706Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:43:17.994706Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1409.2062","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":"2026-05-18T02:43:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WqE2zsZkq6j4Fy9mCC3XExnWOfHMq1n+eqvzRT11vOixfaF0ziJUZ6BAmIvMO/3JifCVM/yx4LVHGCG8Y/dhBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T09:44:58.734077Z"},"content_sha256":"84816aa2547d6090e1e7273ff950081f1e04786e66ae4bf6d8264d8806182b1b","schema_version":"1.0","event_id":"sha256:84816aa2547d6090e1e7273ff950081f1e04786e66ae4bf6d8264d8806182b1b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:7KDHVXQBJRPMKN7LWWP6BFF4OS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Surface salinity fields in the Arctic Ocean and statistical approaches to predicting anomalies and patterns","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.ao-ph","authors_text":"Ekaterina A. Chernyavskaya, Ivan Sudakov, Kenneth M. Golden, Leonid A. Timokhov","submitted_at":"2014-09-06T22:09:46Z","abstract_excerpt":"Significant salinity anomalies have been observed in the Arctic Ocean surface layer during the last decade. Using gridded data of winter salinity in the upper 50 m layer of the Arctic Ocean for the period 1950-1993 and 2007-2012, we investigated the inter-annual variability of the salinity fields, attempted to identify patterns and anomalies, and developed a statistical model for the prediction of surface layer salinity. The statistical model is based on linear regression equations linking the principal components with environmental factors, such as atmospheric circulation, river runoff, ice p"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1409.2062","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":"2026-05-18T02:43:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5iVUlDS0gGZDhvOVUnFpyyQ28XV5rWw36AgE3OrTMde8ME+VBBCkx2mH+C+K9A/3IIfppTHcpcNlScL91+93AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T09:44:58.734458Z"},"content_sha256":"85cbbc37995dbb43192a2052d0fd76e58986ba991ecd58f6eff992b8604bc207","schema_version":"1.0","event_id":"sha256:85cbbc37995dbb43192a2052d0fd76e58986ba991ecd58f6eff992b8604bc207"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7KDHVXQBJRPMKN7LWWP6BFF4OS/bundle.json","state_url":"https://pith.science/pith/7KDHVXQBJRPMKN7LWWP6BFF4OS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7KDHVXQBJRPMKN7LWWP6BFF4OS/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":"2026-05-28T09:44:58Z","links":{"resolver":"https://pith.science/pith/7KDHVXQBJRPMKN7LWWP6BFF4OS","bundle":"https://pith.science/pith/7KDHVXQBJRPMKN7LWWP6BFF4OS/bundle.json","state":"https://pith.science/pith/7KDHVXQBJRPMKN7LWWP6BFF4OS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7KDHVXQBJRPMKN7LWWP6BFF4OS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:7KDHVXQBJRPMKN7LWWP6BFF4OS","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":"df068315fa3421ff074647aaf5150b3a93e2c8194f54b8ded814da73b16a0a26","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ao-ph","submitted_at":"2014-09-06T22:09:46Z","title_canon_sha256":"f063cd8ecd55ee7b863f6137c2e161dea5f780383212c52111efd00ab80c6100"},"schema_version":"1.0","source":{"id":"1409.2062","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1409.2062","created_at":"2026-05-18T02:43:17Z"},{"alias_kind":"arxiv_version","alias_value":"1409.2062v1","created_at":"2026-05-18T02:43:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1409.2062","created_at":"2026-05-18T02:43:17Z"},{"alias_kind":"pith_short_12","alias_value":"7KDHVXQBJRPM","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_16","alias_value":"7KDHVXQBJRPMKN7L","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_8","alias_value":"7KDHVXQB","created_at":"2026-05-18T12:28:19Z"}],"graph_snapshots":[{"event_id":"sha256:85cbbc37995dbb43192a2052d0fd76e58986ba991ecd58f6eff992b8604bc207","target":"graph","created_at":"2026-05-18T02:43:17Z","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":"Significant salinity anomalies have been observed in the Arctic Ocean surface layer during the last decade. Using gridded data of winter salinity in the upper 50 m layer of the Arctic Ocean for the period 1950-1993 and 2007-2012, we investigated the inter-annual variability of the salinity fields, attempted to identify patterns and anomalies, and developed a statistical model for the prediction of surface layer salinity. The statistical model is based on linear regression equations linking the principal components with environmental factors, such as atmospheric circulation, river runoff, ice p","authors_text":"Ekaterina A. Chernyavskaya, Ivan Sudakov, Kenneth M. Golden, Leonid A. Timokhov","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ao-ph","submitted_at":"2014-09-06T22:09:46Z","title":"Surface salinity fields in the Arctic Ocean and statistical approaches to predicting anomalies and patterns"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1409.2062","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":"sha256:84816aa2547d6090e1e7273ff950081f1e04786e66ae4bf6d8264d8806182b1b","target":"record","created_at":"2026-05-18T02:43:17Z","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":"df068315fa3421ff074647aaf5150b3a93e2c8194f54b8ded814da73b16a0a26","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ao-ph","submitted_at":"2014-09-06T22:09:46Z","title_canon_sha256":"f063cd8ecd55ee7b863f6137c2e161dea5f780383212c52111efd00ab80c6100"},"schema_version":"1.0","source":{"id":"1409.2062","kind":"arxiv","version":1}},"canonical_sha256":"fa867ade014c5ec537ebb59fe094bc748e7c8dc6214e396d5492b6063ad48c7e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fa867ade014c5ec537ebb59fe094bc748e7c8dc6214e396d5492b6063ad48c7e","first_computed_at":"2026-05-18T02:43:17.994706Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:43:17.994706Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"IoQqT0yxIwQqxB6Rz6uV73B3pGfcRog3c1nJbDPNWspuVgtGccXdIwJsfk+lKuJnwrJ99WQzhO4Uaq6VQntcDw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:43:17.995176Z","signed_message":"canonical_sha256_bytes"},"source_id":"1409.2062","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:84816aa2547d6090e1e7273ff950081f1e04786e66ae4bf6d8264d8806182b1b","sha256:85cbbc37995dbb43192a2052d0fd76e58986ba991ecd58f6eff992b8604bc207"],"state_sha256":"223cacca65b4e6c5bffc46592e6c79bd2b715a636ce4c499489a5c07fa1e239e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6YHXtcP8REdtoqrhu/m3AqKT3wYOSQEVQI70I8cv4nrNqSL7iU2XHsetMu7KXLe0iF0cXiYP7dlxqKzQguElAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T09:44:58.737091Z","bundle_sha256":"c4e479d508c36b1896b4f455290d890281344bde1b51ebfd11bd045ce4f9752d"}}