{"id":"W7107856459","doi":"10.7795/120.20251126d","title":"Developing calibration and measurement capabilities for atmospheric CH₄ stable-isotope ratios at NMIs/DIs: Metrology for global comparability","year":2025,"lang":"en","type":"article","venue":"PTB-OAR","topic":"Atmospheric and Environmental Gas Dynamics","field":"Environmental Science","cited_by":0,"is_retracted":false,"has_abstract":true,"ca_institutions":"Métis National Council","funders":"","keywords":"Metrology; Comparability; Calibration; Measurement uncertainty; Stable isotope ratio; Units of measurement","routes":{"ca_aff":true,"ca_fund":false,"ca_venue":false,"about_ca":false,"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":[0.02246666,0.001350678,0.001407967,0.004872066,0.0008152475,0.003482686,0.002970598,0.001525335,0.001812232],"category_scores_gemma":[0.01267855,0.0007883759,0.001296298,0.005240452,0.001469741,0.005730697,0.002933383,0.002730632,0.001647845],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.003874611,"about_ca_system_score_gemma":0.006116566,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.01026716,"about_ca_topic_score_gemma":0.01004459,"domain_scores_codex":[0.9890859,0.002531269,0.0008806458,0.001683477,0.005360091,0.0004585334],"domain_scores_gemma":[0.9917901,0.001740882,0.0008225376,0.000977907,0.004535686,0.0001329613],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"design_other","study_design_gemma":"bench_or_experimental","study_design_scores_codex":[0.0001851083,0.00006145157,0.014565,0.011692,0.0004563299,0.0001854836,0.0008660223,0.008007316,0.0479513,0.08351088,0.02921817,0.8033009],"study_design_scores_gemma":[0.00002454769,0.0002056343,0.0184002,0.004041848,0.0002859252,0.0004927688,0.0006288964,0.00664675,0.05726918,0.03916272,0.8726427,0.0001987242],"study_design_candidate":"bench_or_experimental","study_design_consensus":null,"genre_codex":"methods","genre_gemma":"empirical","genre_scores_codex":[0.02598794,0.4278851,0.466155,0.008458337,0.003373118,0.0006568749,0.005751671,0.00225353,0.05947855],"genre_scores_gemma":[0.1798878,0.3113863,0.4815264,0.004779477,0.002038909,0.001651767,0.01097327,0.001380105,0.006375976],"genre_candidate":"empirical","genre_consensus":null,"teacher_disagreement_score":0.02246666,"threshold_uncertainty_score":0.1188165,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.02097177193470088,"score_gpt":0.2452966662685034,"score_spread":0.2243248943338026,"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."}}