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An ordinary least-squares (OLS) linear trend is fitted to the full available annual series starting from 1979, separately for the Arctic and global means. The Arctic Amplification ratio for each dataset is the Arctic OLS slope divided by the global OLS slope (dimensionless). The headline result is the unweighted mean of the four per-dataset AA ratios. All computations are implemented in Python using xarray, numpy, and scipy.stats.linregress. The full pipeline (data download → cleaning → analysis → figures) is automated via Snakemake and reproduced with pixi-managed dependencies. https://w3id.org/sciencelive/np/RApBTOFIsvkcFttckgdZy-qF4FWE2dqdRwUColauzPGrc/rantanen-2022-arctic-amplification-study https://w3id.org/sciencelive/o/terms/hasScopeDescription The observational component of the Arctic Amplification claim: whether the ratio of the Arctic (66.5°N–90°N) linear warming trend to the global mean warming trend, computed from the same four publicly available observational datasets, exceeds 3× for the period starting in 1979. The model comparison component of the original paper (showing that CMIP5/CMIP6 models underestimate the observed AA) is explicitly out of scope. https://w3id.org/sciencelive/np/RApBTOFIsvkcFttckgdZy-qF4FWE2dqdRwUColauzPGrc/rantanen-2022-arctic-amplification-study https://w3id.org/sciencelive/o/terms/targetsClaim https://w3id.org/sciencelive/np/RA7QUD7DRYY2CJOHXFkgBVKQ9Oq8tkykONjLFZe7LNGVs/rantanen-2022-arctic-amplification-claim https://w3id.org/sciencelive/np/RApBTOFIsvkcFttckgdZy-qF4FWE2dqdRwUColauzPGrc/provenance https://w3id.org/sciencelive/np/RApBTOFIsvkcFttckgdZy-qF4FWE2dqdRwUColauzPGrc/assertion http://www.w3.org/ns/prov#wasAttributedTo https://orcid.org/0000-0002-8763-1643 https://w3id.org/sciencelive/np/RApBTOFIsvkcFttckgdZy-qF4FWE2dqdRwUColauzPGrc/pubinfo https://orcid.org/0000-0002-8763-1643 http://xmlns.com/foaf/0.1/name Jean Iaquinta https://w3id.org/sciencelive/np/RApBTOFIsvkcFttckgdZy-qF4FWE2dqdRwUColauzPGrc http://purl.org/dc/terms/created 2026-05-31T09:43:40.016Z https://w3id.org/sciencelive/np/RApBTOFIsvkcFttckgdZy-qF4FWE2dqdRwUColauzPGrc http://purl.org/dc/terms/creator https://orcid.org/0000-0002-8763-1643 https://w3id.org/sciencelive/np/RApBTOFIsvkcFttckgdZy-qF4FWE2dqdRwUColauzPGrc http://purl.org/dc/terms/license https://creativecommons.org/licenses/by/4.0/ https://w3id.org/sciencelive/np/RApBTOFIsvkcFttckgdZy-qF4FWE2dqdRwUColauzPGrc http://purl.org/nanopub/x/introduces https://w3id.org/sciencelive/np/RApBTOFIsvkcFttckgdZy-qF4FWE2dqdRwUColauzPGrc/rantanen-2022-arctic-amplification-study https://w3id.org/sciencelive/np/RApBTOFIsvkcFttckgdZy-qF4FWE2dqdRwUColauzPGrc http://purl.org/nanopub/x/wasCreatedAt https://platform.sciencelive4all.org https://w3id.org/sciencelive/np/RApBTOFIsvkcFttckgdZy-qF4FWE2dqdRwUColauzPGrc http://www.w3.org/2000/01/rdf-schema#label Computational replication of Arctic Amplification — Rantanen et al. 2022 https://w3id.org/sciencelive/np/RApBTOFIsvkcFttckgdZy-qF4FWE2dqdRwUColauzPGrc https://w3id.org/np/o/ntemplate/wasCreatedFromTemplate https://w3id.org/np/RAuLEjPp-4dTvPwMkfHggTto1CgjIftiGRAgHlyeEonjQ https://w3id.org/sciencelive/np/RApBTOFIsvkcFttckgdZy-qF4FWE2dqdRwUColauzPGrc/sig http://purl.org/nanopub/x/hasAlgorithm RSA https://w3id.org/sciencelive/np/RApBTOFIsvkcFttckgdZy-qF4FWE2dqdRwUColauzPGrc/sig http://purl.org/nanopub/x/hasPublicKey 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 https://w3id.org/sciencelive/np/RApBTOFIsvkcFttckgdZy-qF4FWE2dqdRwUColauzPGrc/sig http://purl.org/nanopub/x/hasSignature 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 https://w3id.org/sciencelive/np/RApBTOFIsvkcFttckgdZy-qF4FWE2dqdRwUColauzPGrc/sig http://purl.org/nanopub/x/hasSignatureTarget https://w3id.org/sciencelive/np/RApBTOFIsvkcFttckgdZy-qF4FWE2dqdRwUColauzPGrc https://w3id.org/sciencelive/np/RApBTOFIsvkcFttckgdZy-qF4FWE2dqdRwUColauzPGrc/sig http://purl.org/nanopub/x/signedBy https://orcid.org/0000-0002-8763-1643