noaa-forcing-23711 Paleo-pCO2 Database Franks Method Stomata CO2 Data Reichgelt, T.; D'Andrea, W.J.; Fox, B.R.S. Paleo-pCO2 Database Franks Method Stomata CO2 Data 2018-03-25 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/23711 Investigator T. Reichgelt Investigator W.J. D'Andrea Investigator B.R.S. Fox earth science paleoclimate climate forcing age,null,null,million years ago,null,climate forcing,null,null,N,null earth science paleoclimate climate forcing carbon dioxide,bulk atmosphere,null,parts per million,null,climate forcing,null,null,N,based on stomatal density earth science paleoclimate climate forcing carbon dioxide geoscientificInformation 23030000 cal yr BP 22984000 cal yr BP Complete -45.53 -45.53 170.22 170.22 Continent Australia/New Zealand New Zealand Foulden Maar Diatomite>LATITUDE -45.53>LONGITUDE 170.22 None Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site. English DOC/NOAA/NESDIS/NCEI National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce https://www.ncdc.noaa.gov/data-access/paleoclimatology-data DATA Center Contact Bruce Bauer bruce.a.bauer@noaa.gov paleo@noaa.gov 303-497-6280 303-497-6513

325 Broadway, E/NE31

Boulder CO 80305-3328 USA online ASCII Tammo Reichgelt, William J. D'Andrea, Bethany R.S. Fox 2016 Earth and Planetary Science Letters 455 115-124 10.1016/j.epsl.2016.09.026 https://www.sciencedirect.com/science/article/pii/S0012821X16305064

A rise in atmospheric CO2 is believed to be necessary for the termination of large-scale glaciations. Although the Antarctic Ice Sheet is estimated to have melted from ~125% to ~50% its modern size, there is thus far no evidence for an increase in atmospheric CO2 associated with the Mi-1 glacial termination in the earliest Miocene. Here, we present evidence from a high-resolution terrestrial record of leaf physiological change in southern New Zealand for an abrupt increase in atmospheric CO2 coincident with the termination of the Mi-1 glaciation and lasting approximately 20 kyr. Quantitative pCO2 estimates, made using a leaf gas exchange model, suggest that atmospheric CO2 levels may have doubled during this period, from 516+/- 111 ppm to 1144+/-410 ppm, and subsequently returned back to 425 +/- 53 ppm. The 20-kyr interval with high pCO2 estimates is also associated with a period of increased moisture supply to southern New Zealand, inferred from carbon and hydrogen isotopes of terrestrial leaf waxes. The results provide the first high-resolution record of terrestrial environmental change at the Oligocene/Miocene boundary, document a ~20 kyr interval of elevated pCO2 and increased local moisture availability, and provide insight into ecosystem response to a major orbitally driven climatic transition. STUDY NOTES: Paleo-CO2 derived from fossil plant stomata utilizing the Franks method, contributed to the Paleo-pCO2 Database.

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/climate_forcing/trace_gases/Paleo-pCO2/reichgelt2016stomata.xlsx Excel File; Franks Method Stomata CO2 Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/climate_forcing/trace_gases/Paleo-pCO2/reichgelt2016stomata.txt NOAA Template File; Franks Method Stomata CO2 Data USA/NOAA DIF Version 9.8.4 2019-03-08 2019-03-08