{"id":"W3018690166","doi":"10.1029/2020gl087535","title":"Ice Core Record of Persistent Short‐Chain Fluorinated Alkyl Acids: Evidence of the Impact From Global Environmental Regulations","year":2020,"lang":"en","type":"article","venue":"Geophysical Research Letters","topic":"Per- and polyfluoroalkyl substances research","field":"Environmental Science","cited_by":114,"is_retracted":false,"has_abstract":true,"ca_institutions":"General Electric (Canada); University of Toronto; Environment and Climate Change Canada; York University; University of Alberta; Memorial University of Newfoundland","funders":"Natural Sciences and Engineering Research Council of Canada","keywords":"Trifluoroacetic acid; Ice core; Chlorofluorocarbon; Acid deposition; Deposition (geology); Alkyl; Chlorinated paraffins; Environmental chemistry; Environmental science; Chemistry; Arctic; Degradation (telecommunications); Organic chemistry; Climatology; Geology; Oceanography; Soil water; Computer science; Soil science","routes":{"ca_aff":true,"ca_fund":true,"ca_venue":false,"about_ca":true,"invisible_to_affiliation_only":false},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"metacan-v3-hybrid-931329e0061c","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.0002047129,0.0002014988,0.0001731527,0.0006495453,0.0003825491,0.0003867069,0.0001375396,0.0002440613,0.0004524286],"category_scores_gemma":[0.0001836849,0.00008396889,0.0001384831,0.0005260624,0.0002533316,0.0002170666,0.0002257508,0.0001625613,0.0001006685],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0007161839,"about_ca_system_score_gemma":0.0005096301,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.09437456,"about_ca_topic_score_gemma":0.09679478,"domain_scores_codex":[0.9999521,0.000003826607,0.000003428238,0.00001459841,0.00001547079,0.00001060014],"domain_scores_gemma":[0.9997656,0.00002024558,0.00005358779,0.00001344446,0.0001237562,0.00002343061],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"observational","study_design_gemma":"observational","study_design_scores_codex":[0.0003791949,0.00006021397,0.8835685,0.00007162686,0.0001165535,0.0002500075,0.0003517533,0.001857674,0.1004665,0.0003686009,0.0007251246,0.01178433],"study_design_scores_gemma":[0.000007432124,0.00004654075,0.991975,0.00001018674,0.00002290098,0.00005443599,0.0001313086,0.001234289,0.004439185,0.00004674171,0.002026798,0.000005193528],"study_design_candidate":"observational","study_design_consensus":"observational","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9968041,0.0002048962,0.0001651694,0.00003557205,0.000006887077,0.000003744174,0.001165291,0.00001189611,0.001602512],"genre_scores_gemma":[0.9980822,0.0001918313,0.0003173232,0.00002559222,0.00000837506,0.000004282448,0.001041846,0.000004571123,0.0003240627],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.09437456,"threshold_uncertainty_score":0.1876505,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.08439560701740233,"score_gpt":0.3467987222074781,"score_spread":0.2624031151900758,"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."}}