{"id":"W2007368603","doi":"10.1029/2003ja010337","title":"Seasonal variation of HF radar <i>F</i> region echo occurrence in the midnight sector","year":2004,"lang":"en","type":"article","venue":"Journal of Geophysical Research Atmospheres","topic":"Ionosphere and magnetosphere dynamics","field":"Physics and Astronomy","cited_by":36,"is_retracted":false,"has_abstract":true,"ca_institutions":"Geological Survey of Canada; University of Saskatchewan","funders":"","keywords":"Echo (communications protocol); Radar; Latitude; Geology; Midnight; Middle latitudes; Low latitude; Maxima; Ionosphere; Atmospheric sciences; Geophysics; Climatology; Geodesy; Physics; Astronomy","routes":{"ca_aff":true,"ca_fund":false,"ca_venue":false,"about_ca":true,"invisible_to_affiliation_only":false},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"codex-gemma-dda1882f352a","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.0008661308,0.000160936,0.000329721,0.00001790949,0.0001209714,0.00007313336,0.0006484333,0.00006108967,0.0002131126],"category_scores_gemma":[0.0001067988,0.0001085951,0.0002349616,0.0007215253,0.0001920316,0.0003578389,0.00007485141,0.0009443425,0.00002080087],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.00009155379,"about_ca_system_score_gemma":0.0006090862,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.001377202,"about_ca_topic_score_gemma":0.0000652109,"domain_scores_codex":[0.9974043,0.0003435642,0.0005243429,0.0001843385,0.001103993,0.0004394733],"domain_scores_gemma":[0.9981587,0.0005580698,0.0003260193,0.0002719973,0.0005614011,0.0001238004],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"theoretical_or_conceptual","study_design_gemma":"theoretical_or_conceptual","study_design_scores_codex":[0.00450794,0.01574735,0.078249,0.0005062037,0.001056297,0.0006836929,0.01818787,0.01423438,0.02901236,0.553076,0.04175763,0.2429812],"study_design_scores_gemma":[0.01117633,0.00579396,0.3267085,0.001074832,0.0001565545,0.00007348348,0.008762646,0.003180403,0.00513786,0.6172409,0.01962571,0.001068838],"study_design_candidate":"theoretical_or_conceptual","study_design_consensus":"theoretical_or_conceptual","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9874879,0.0001743734,0.006920519,0.0009245713,0.0001665335,0.0002527965,0.00001903916,0.000004672596,0.004049574],"genre_scores_gemma":[0.9976388,0.00002809913,0.001486112,0.00004107678,0.0006415753,0.000007440899,0.000006668221,0.00001167748,0.0001385375],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.2484595,"threshold_uncertainty_score":0.4428379,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.02137048697218645,"score_gpt":0.2915807295631712,"score_spread":0.2702102425909848,"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."}}