{"id":"W2120381021","doi":"10.1016/j.pss.2006.02.005","title":"Methane and related trace species on Mars: Origin, loss, implications for life, and habitability","year":2006,"lang":"en","type":"article","venue":"Planetary and Space Science","topic":"Planetary Science and Exploration","field":"Physics and Astronomy","cited_by":277,"is_retracted":false,"has_abstract":false,"ca_institutions":"","funders":"Science Mission Directorate; Canadian Space Agency; Universities Space Research Association; National Aeronautics and Space Administration","keywords":"Methane; Astrobiology; Mars Exploration Program; Martian; Atmosphere (unit); Atmosphere of Mars; Trace gas; Habitability; Environmental science; Atmospheric methane; Martian surface; Earth science; Atmospheric sciences; Geology; Planet; Chemistry; Physics; Astrophysics; Meteorology","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":[0.0001320922,0.0001566274,0.0001573864,0.0009249538,0.0005961205,0.0003576456,0.0004797946,0.0004334767,0.001057684],"category_scores_gemma":[0.0004327559,0.0001077694,0.0001335735,0.0006132711,0.0004119254,0.0006747651,0.0005483404,0.000221635,0.0001038075],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0003477376,"about_ca_system_score_gemma":0.0001500325,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.009466137,"about_ca_topic_score_gemma":0.00690324,"domain_scores_codex":[0.9999306,0.0000122354,0.000002693745,0.0000149571,0.00002069555,0.00001869354],"domain_scores_gemma":[0.9998215,0.00003630324,0.00006405376,0.0000118011,0.00003993692,0.00002653359],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"observational","study_design_gemma":"observational","study_design_scores_codex":[0.00187621,0.00007730056,0.9091363,0.0001431871,0.0001273756,0.0003684973,0.0007992246,0.001895662,0.05274236,0.00119095,0.0003817335,0.03126134],"study_design_scores_gemma":[0.000008594126,0.0001554828,0.9899619,0.00001562347,0.00003318892,0.0001741739,0.0008420727,0.001382706,0.004815371,0.0007259269,0.001875351,0.000009669862],"study_design_candidate":"observational","study_design_consensus":"observational","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9984459,0.0007225433,0.0001053683,0.00007190589,0.000002676613,0.000001041757,0.00009550396,0.000005283828,0.0005497342],"genre_scores_gemma":[0.9994944,0.0002091968,0.00005519268,0.000006262031,0.000004460533,8.413334e-7,0.00007153493,0.00000168436,0.0001563233],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.009466137,"threshold_uncertainty_score":0.01882207,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.01638429648355232,"score_gpt":0.2329671738358129,"score_spread":0.2165828773522606,"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."}}