[{"name":"steinthorsdottir-2020-miocene-1","title":"CO\u2082 reconstruction for the Miocene Climatic Optimum based on fossil plants","summary":"The dataset contains the supporting information to stomatal-proxy and isotope based CO\u2082 reconstructions performed on a dataset of fossil leaves from the Miocene Climatic Optimum (MCO), ca. 16 million years ago, collected from the Clarkia Lagerst\u00e4tte deposits of Idaho, USA.\r\n\r\nMCO proxies record high temperatures of up to 7 \u00b0C above modern at moderate CO\u2082 levels but this cannot be replicated with existing climate models (the same models used to predict future climate change). Either previously published records underestimate CO\u2082 or climate models are missing important feedbacks. We reconstruct moderate CO\u2082 of ~450\u2060\u200a\u2013\u200a\u2060550 ppm, implying that Earth System sensitivity must have been elevated. Ever higher climate sensitivity with rising temperatures should be very seriously considered in future predictions of climate change.\r\n\r\nThe dataset includes all information as well as code to reproduce our results. An image of the leaf material used is also included.","citations":"Steinthorsdottir M, Jardine PE, Rember WC. (2020). Near\u2010Future pCO2 during the hot Mid Miocene Climatic Optimum. Paleoceanography and Paleoclimatology. Accepted Author Manuscript. doi:10.1029\/2020PA003900","comments":"[Margret Stenthorsdottir](https:\/\/www.nrm.se\/steinthorsdottir) is also affiliated with the Bolin Centre for Climate Research, Stockholm University.","category":"Terrestrial","subcategory":"Ecosystems","keywords":"Stomatal proxy; CO\u2082 reconstruction; Miocene Climatic Optimum; Climate sensitivity; Fossil leaves","scientist":"Margret Steinthorsdottir, Phillip E. Jardine, Willian C. Rember","firstname":"Margret","lastname":"Steinthorsdottir","address":"Department of Palaeobiology; Swedish Museum of Natural History","postalcode":"SE-104 05","city":"Stockholm","province":"","country":"Sweden","parameters":"Earth science > Climate indicators > Paleoclimate indicators > Paleoclimate forcing > Carbon dioxide forcing","location":"Continent > North America > United States Of America > Idaho","progress":"Completed","language":"English","project":"This research was funded by the Swedish Research Council (VR Starting Grant NT-7 2016 04905 to M.S). The Bolin Centre for Climate Research RA6 funded the 2017 fieldwork campaign.","publisher":"Bolin Centre Database","version":"1","constrains":"None, but please cite Steinthorsdottir et al. (2020)","access":"Free"}]