{"id":"W1930021590","doi":"10.1126/science.aaa1668","title":"The dominant role of semi-arid ecosystems in the trend and variability of the land CO <sub>2</sub> sink","year":2015,"lang":"en","type":"article","venue":"Science","topic":"Plant Water Relations and Carbon Dynamics","field":"Environmental Science","cited_by":1478,"is_retracted":false,"has_abstract":true,"ca_institutions":"","funders":"Natural Environment Research Council; Natural Sciences and Engineering Research Council of Canada; U.S. Geological Survey; U.S. Department of Energy; Kungliga Fysiografiska Sällskapet i Lund; National Aeronautics and Space Administration; Ministry of Environment; National Oceanic and Atmospheric Administration; Sight Research UK; Seventh Framework Programme; Commonwealth Scientific and Industrial Research Organisation; Vetenskapsrådet; National Science Foundation","keywords":"Biosphere; Environmental science; Arid; Ecosystem; Shrubland; Carbon sink; Carbon cycle; Sink (geography); Water cycle; Atmospheric sciences; Precipitation; Carbon dioxide; Tropics; Terrestrial ecosystem; Productivity; Ecology; Geography; Geology; Biology; 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":[0.000330571,0.0002139092,0.0002052404,0.0005667782,0.0002114323,0.0007611387,0.0001657934,0.0001953345,0.0005223931],"category_scores_gemma":[0.0006671902,0.0001625089,0.0002814941,0.0007416402,0.0002804702,0.0005613343,0.000351931,0.0001730088,0.0001624479],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.000270257,"about_ca_system_score_gemma":0.0002013802,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.00314456,"about_ca_topic_score_gemma":0.005101975,"domain_scores_codex":[0.999926,0.00001457646,0.000006617093,0.00002965174,0.00001134686,0.00001185309],"domain_scores_gemma":[0.9996589,0.00009797479,0.0001153723,0.00003800049,0.0000502881,0.0000394889],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"observational","study_design_gemma":"observational","study_design_scores_codex":[0.0001578168,0.00004551799,0.9436982,0.0001004061,0.0002299159,0.0001191504,0.0002285653,0.01049698,0.02221917,0.0008428003,0.0006076768,0.02125363],"study_design_scores_gemma":[0.000006496402,0.00001836708,0.9691377,0.00001072394,0.00004915258,0.00008444959,0.000111422,0.02752272,0.001427948,0.0008768124,0.0007398204,0.00001431702],"study_design_candidate":"observational","study_design_consensus":"observational","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9964784,0.000639957,0.001288325,0.00009073132,0.000009614329,0.000003111692,0.0005224664,0.00004922619,0.000918099],"genre_scores_gemma":[0.9993045,0.0001494703,0.000221963,0.00001096566,0.000007338859,0.00000161981,0.0002330474,0.000007876623,0.00006319217],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.00314456,"threshold_uncertainty_score":0.006252527,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.00559434848499917,"score_gpt":0.1941098861602031,"score_spread":0.1885155376752039,"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."}}