{"id":"W2414703606","doi":"10.5194/acp-16-11733-2016","title":"Atmospheric abundance and global emissions of perfluorocarbons CF <sub>4</sub> , C <sub>2</sub> F <sub>6</sub> and C <sub>3</sub> F <sub>8</sub> since 1800 inferred from ice core, firn, air archive and in situ measurements","year":2016,"lang":"en","type":"article","venue":"Atmospheric chemistry and physics","topic":"Atmospheric Ozone and Climate","field":"Earth and Planetary Sciences","cited_by":64,"is_retracted":false,"has_abstract":true,"ca_institutions":"","funders":"Natural Environment Research Council; Institut Polaire Français Paul Emile Victor; Korea Polar Research Institute; Sight Research UK; University of Bristol; Centre National de la Recherche Scientifique; European Science Foundation; U.S. Department of Energy; European Commission; National Science Foundation; Office of Polar Programs; Fonds De La Recherche Scientifique - FNRS; Department of Energy and Climate Change; Nederlandse Organisatie voor Wetenschappelijk Onderzoek; Agence Nationale de la Recherche; Natural Resources Canada; Fonds Wetenschappelijk Onderzoek; National Aeronautics and Space Administration; Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung; National Institute of Polar Research; Commonwealth Scientific and Industrial Research Organisation","keywords":"Firn; Ice core; Chemistry; Greenhouse gas; Atmospheric sciences; Aluminium; Environmental science; Environmental chemistry; Snow; Climatology; Meteorology; Oceanography; Geology; Geography","routes":{"ca_aff":false,"ca_fund":true,"ca_venue":false,"about_ca":false,"invisible_to_affiliation_only":true},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"metacan-v3-hybrid-931329e0061c","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.0001161635,0.0002304087,0.00008580823,0.0006013093,0.0001587857,0.0002469725,0.0001331444,0.0001936564,0.0007117613],"category_scores_gemma":[0.0002319154,0.0001256302,0.0002081949,0.0005817785,0.0001601089,0.0002444022,0.0001978336,0.0001685158,0.0001814446],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0005734579,"about_ca_system_score_gemma":0.000187914,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.02756622,"about_ca_topic_score_gemma":0.03780625,"domain_scores_codex":[0.9999563,0.000002394311,0.000002659669,0.00002092311,0.00000837756,0.000009504226],"domain_scores_gemma":[0.9999115,0.00001156605,0.0000302065,0.000008819033,0.00003253992,0.000005327947],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"observational","study_design_gemma":"observational","study_design_scores_codex":[0.0001248879,0.00003190319,0.9523662,0.00005047377,0.0000998668,0.00008423658,0.0001545501,0.003916306,0.02606245,0.0002789433,0.0008827169,0.01594753],"study_design_scores_gemma":[0.000005411555,0.00002054413,0.9871083,0.00001220289,0.00003969214,0.0000672958,0.00008059646,0.002675915,0.006419037,0.00008353695,0.003475882,0.00001163252],"study_design_candidate":"observational","study_design_consensus":"observational","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9952785,0.0001046849,0.0003109535,0.00002027483,0.000004334781,0.000002059218,0.003140968,0.0000220485,0.001116185],"genre_scores_gemma":[0.9929608,0.0001998721,0.0008892412,0.00001595296,0.000009117407,0.000006471378,0.005509158,0.00001150236,0.0003979285],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.02756622,"threshold_uncertainty_score":0.05481154,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.01152754963657394,"score_gpt":0.2060798351739622,"score_spread":0.1945522855373883,"validation_status":"score_only:v0-immature-baseline","note":"Baseline scores from an immature model (maturity gate not passed). Scores rank; they never assert a category."}}