Finlayson, New Zealand Ancient Kauri Radiocarbon and Ringwidth Data Turney, C.S.M.; Palmer, J.G.; Bronk Ramsey, C.; Adolphi, F.; Muscheler, R.; Hughen, K.A.; Staff, R.A.; Jones, R.T.; Thomas, Z.A.; Fogwill, C.; Hogg, A. Turney, C.S.M. Palmer, J.G. Bronk Ramsey, C. Adolphi, F. Muscheler, R. Hughen, K.A. Staff, R.A. Jones, R.T. Thomas, Z.A. Fogwill, C. Hogg, A. AGAU Agathis australis (D. Don) Loudon kauri pine earth science/paleoclimate/tree-ring earth science/paleoclimate/others (Finlayson>LATITUDE -35.83>LONGITUDE 173.64) Contrasting Greenland and Antarctic temperatures during the last glacial period (115,000 to 11,650 years ago) are thought to have been driven by imbalances in the rates of formation of North Atlantic and Antarctic Deep Water (the 'bipolar seesaw'). Here we exploit a bidecadally resolved 14C data set obtained from New Zealand kauri (Agathis australis) to undertake high-precision alignment of key climate data sets spanning iceberg-rafted debris event Heinrich 3 and Greenland Interstadial (GI) 5.1 in the North Atlantic (~30,400 to 28,400 years ago). We observe no divergence between the kauri and Atlantic marine sediment 14C data sets, implying limited changes in deep water formation. However, a Southern Ocean (Atlantic-sector) iceberg rafted debris event appears to have occurred synchronously with GI-5.1 warming and decreased precipitation over the western equatorial Pacific and Atlantic. An ensemble of transient meltwater simulations shows that Antarctic-sourced salinity anomalies can generate climate changes that are propagated globally via an atmospheric Rossby wave train. STUDY NOTES: Bidecadal 14C measurements on a 2000 year ancient Kauri tree-ring record from Finlayson, New Zealand. Floating Finlayson08 ringwidth data series added 10/10/2018. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Turney, C.S.M. Investigator : Palmer, J.G. Investigator : Bronk Ramsey, C. Investigator : Adolphi, F. Investigator : Muscheler, R. Investigator : Hughen, K.A. Investigator : Staff, R.A. Investigator : Jones, R.T. Investigator : Thomas, Z.A. Investigator : Fogwill, C. Investigator : Hogg, A. 2017-08-04 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/22450 https://www1.ncdc.noaa.gov/pub/data/paleo/radiocarbon/finlayson08.rwl https://www1.ncdc.noaa.gov/pub/data/paleo/radiocarbon/finlayson2016c14.txt https://www1.ncdc.noaa.gov/pub/data/paleo/radiocarbon/finlayson08.rwl https://www1.ncdc.noaa.gov/pub/data/paleo/radiocarbon/finlayson2016c14.txt English https://www.ncdc.noaa.gov/paleo/study/22450 https://www1.ncdc.noaa.gov/pub/data/paleo/radiocarbon/finlayson08.rwl https://www1.ncdc.noaa.gov/pub/data/paleo/radiocarbon/finlayson2016c14.txt Chris S.M. Turney, Jonathan Palmer, Christopher Bronk Ramsey, Florian Adolphi, Raimund Muscheler, Konrad A. Hughen, Richard A. Staff, Richard T. Jones, Zoë A. Thomas, Christopher J. Fogwill, Alan Hogg2016High-precision dating and correlation of ice, marine and terrestrial sequences spanning Heinrich Event 3: Testing mechanisms of interhemispheric change using New Zealand ancient kauri (Agathis australis)Quaternary Science Reviews137126-13410.1016/j.quascirev.2016.02.005http://www.sciencedirect.com/science/article/pii/S0277379116300373 Chris S.M. Turney, Richard T. Jones, Steven J. Phipps, Zoë Thomas, Alan Hogg, A. Peter Kershaw, Christopher J. Fogwill, Jonathan Palmer, Christopher Bronk Ramsey, Florian Adolphi, Raimund Muscheler, Konrad A. Hughen, Richard A. Staff, Mark Grosvenor, Nicholas R. Golledge, Sune Olander Rasmussen, David K. Hutchinson, Simon Haberle, Andrew Lorrey, Gretel Boswijk, and Alan Cooper2017Rapid global ocean-atmosphere response to Southern Ocean freshening during the last glacialNature Communications520810.1038/s41467-017-00577-6https://www.nature.com/articles/s41467-017-00577-6 START YEAR: 27780 cal yr BP * END YEAR: 25330 cal yr BP 173.64 -35.83 173.64 -35.83