# Finlayson, New Zealand Ancient Kauri Radiocarbon Data #----------------------------------------------------------------------- # World Data Service for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program # National Centers for Environmental Information (NCEI) #----------------------------------------------------------------------- # Template Version 3.0 # Encoding: UTF-8 # NOTE: Please cite Publication, and Online_Resource and date accessed when using these data. # If there is no publication information, please cite Investigators, Title, and Online_Resource and date accessed. # # Online_Resource: https://www.ncdc.noaa.gov/paleo/study/22450 # Description: # Online_Resource: https://www.ncdc.noaa.gov/paleo/study/22391 # Description: # Online_Resource: https://www1.ncdc.noaa.gov/pub/data/paleo/radiocarbon/finlayson2016c14.txt # Description: # # Original_Source_URL: http://ancientkauriproject.com/ # Description: # # Description/Documentation lines begin with # # Data lines have no # # # Archive: Other Collections # # Dataset DOI: # # Parameter_Keywords: radiocarbon #-------------------- # Contribution_Date # Date: 2017-07-17 #-------------------- # File_Last_Modified_Date # Date: 2017-07-17 #-------------------- # Title # Study_Name: Finlayson, New Zealand Ancient Kauri Radiocarbon Data #-------------------- # Investigators # Investigators: Turney, C.S.M.; Jones, R.T.; Phipps, S.J.; Thomas, Z.; Hogg, A.; Kershaw, A.P.; Fogwill, C.J.; Palmer, J.; Bronk Ramsey, C.; Adolphi, F.; Muscheler, R.; Hughen, K.A.; Staff, R.A.; Grosvenor, M.; Golledge, N.R.; Rasmussen, S.O.; Hutchinson, D.K.; Haberle, S.; Lorrey, A.; Boswijk, G.; Cooper, A. #-------------------- # Description_Notes_and_Keywords # Description: Bidecadal 14C measurements on a 2000 year ancient Kauri tree-ring record from Finlayson, New Zealand. # Provided Keywords: 14C dating, peat, Heinrich 3, HE3, H3, South Atlantic 2, SA2, ice rafted debris, IRD, kauri, radiocarbon calibration, Antarctic Isotope Maximum 5, AIM 5, Greenland Interstadial 5.2, GI 5.2 Rossby waves, Kelvin waves, tropical Pacific, Antarctic, Antarctica, Southern Ocean, freshwater hosing, 10Be #-------------------- # Publication # Authors: 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 Hogg # Published_Date_or_Year: 2016-04-01 # Published_Title: High-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) # Journal_Name: Quaternary Science Reviews # Volume: 137 # Edition: # Issue: # Pages: 126-134 # Report_Number: # DOI: 10.1016/j.quascirev.2016.02.005 # Online_Resource: http://www.sciencedirect.com/science/article/pii/S0277379116300373 # Full_Citation: # Abstract: Robustly testing hypotheses of geographic synchroneity of abrupt and extreme change during the late Pleistocene (60,000 to 11,650 years ago) requires a level of chronological precision often lacking in ice, marine and terrestrial sequences. Here we report a bidecadally-resolved New Zealand kauri (Agathis australis) tree-ring sequence spanning two millennia that preserves a record of atmospheric radiocarbon (14C) during ice-rafted debris event Heinrich Event 3 (HE3) in the North Atlantic and Antarctic Isotope Maximum 4 (AIM4) in the Southern Hemisphere. Using 14C in the marine Cariaco Basin and 10Be preserved in Greenland ice, the kauri 14C sequence allows us to precisely align sequences across this period. We observe no significant difference between atmospheric and marine 14C records during HE3, suggesting no stratification of surface waters and collapse in Atlantic Meridional Overturning Circulation (AMOC). Instead our results support recent evidence for a weakened AMOC across at least two millennia of the glacial period. Our work adds to a growing body of literature confirming that Heinrich events are not the cause of stadial cooling and suggests changes in the AMOC were not the primary driver of antiphase temperature trends between the hemispheres. Decadally-resolved 14C in ancient kauri offers a powerful new (and complementary) approach to polar ice core CH4 alignment for testing hypotheses of abrupt and extreme climate change. #------------------ # Publication # Authors: 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 Cooper # Published_Date_or_Year: 2017-09-12 # Published_Title: Rapid global ocean-atmosphere response to Southern Ocean freshening during the last glacial # Journal_Name: Nature Communications # Volume: 8 # Edition: 520 # Issue: # Pages: # Report_Number: # DOI: # Online_Resource: # Full_Citation: # Abstract: 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. #------------------ # Funding_Agency # Funding_Agency_Name: Australian Research Council # Grant: FL100100195, DP170104665, SR140300001 #------------------ # Funding_Agency # Funding_Agency_Name: Natural Environment Research Council # Grant: NE/H009922/1, NE/H007865/1 #------------------ # Site_Information # Site_Name: Finlayson # Location: Australia/New Zealand>New Zealand # Country: New Zealand # Northernmost_Latitude: -35.83 # Southernmost_Latitude: -35.83 # Easternmost_Longitude: 173.64 # Westernmost_Longitude: 173.64 # Elevation: 100 m #------------------ # Data_Collection # Collection_Name: Fin8C14 # Earliest_Year: 27780 # Most_Recent_Year: 25330 # Time_Unit: Cal. Year BP # Core_Length: # Notes: #------------------ # Species # Species_Name: Agathis australis (D. Don) Loudon # Common_Name: Kauri # Tree_Species_Code: AGAU #------------------ # Chronology_Information # Chronology: # #---------------- # Variables # # Data variables follow are preceded by "##" in columns one and two. # Data line variables format: one per line, shortname-tab-variable components (what, material, error, units, seasonality, data type,detail, method, C or N for Character or Numeric data, free text) # ## ringnum Tree Ring Number, , , , , , , ,N, ## LabID Laboratory ID number,,,,,,,,C, ## age_14C 14C age, , , radiocarbon years BP, , , , ,N, ## age_14C1sd 14C age error, , 1 Standard Deviation, radiocarbon years, , , , ,N, # #---------------- # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing Values: # ringnum LabID age_14C age_14C1sd 2990 OxA-31249 27780 190 3010 OxA-31223 27700 290 3030 OxA-31229 27740 210 3050 OxA-31250 27560 190 3070 OxA-31224 27700 320 3090 OxA-X-2525-09 27200 360 3090 OxA-31329 27530 170 3110 OxA-31230 27570 190 3110 OxA-31330 27270 180 3130 OxA-31251 27550 180 3150 OxA-31231 27400 170 3150 OxA-31331 27380 180 3170 OxA-31232 27450 180 3190 OxA-31225 27430 230 3210 OxA-31233 27220 160 3210 OxA-31332 27250 160 3230 OxA-31234 27680 160 3230 OxA-31333 27430 170 3250 OxA-31235 27240 170 3250 OxA-X-2572-51 27070 240 3270 OxA-31226 27620 260 3270 OxA-31334 27240 180 3290 OxA-31236 27110 190 3310 OxA-31237 26770 170 3330 OxA-31238 27050 190 3350 OxA-31239 26620 150 3370 OxA-31240 26710 170 3370 OxA-31335 26810 160 3390 OxA-31252 26830 160 3410 OxA-31241 26640 170 3410 OxA-31336 26180 140 3430 OxA-31242 26830 160 3430 OxA-31337 26710 150 3450 OxA-31227 26850 260 3470 OxA-31243 26550 170 3490 OxA-31244 26840 170 3510 OxA-31228 26980 200 3530 OxA-31245 26670 190 3550 OxA-31338 26660 160 3570 OxA-31253 26790 170 3590 OxA-31254 26510 160 3610 OxA-31255 26570 160 3630 OxA-31256 26530 160 3650 OxA-31257 26140 160 3670 OxA-31269 26340 170 3690 OxA-31270 26200 150 3690 OxA-31271 26490 160 3710 OxA-31258 26490 160 3730 OxA-31259 26500 170 3750 OxA-31260 26460 170 3770 OxA-31261 26340 160 3790 OxA-31272 26440 140 3810 OxA-31273 26370 150 3830 OxA-31262 26350 180 3850 OxA-31263 26380 160 3870 OxA-31264 26340 160 3890 OxA-31274 26320 150 3910 OxA-31275 26630 160 3930 OxA-31276 26240 150 3950 OxA-31265 26520 160 3970 OxA-31266 26410 160 3990 OxA-31267 26370 160 4010 OxA-31277 26310 150 4030 OxA-31278 26380 140 4050 OxA-31279 26540 150 4070 OxA-31280 26290 150 4090 OxA-31281 26000 150 4110 OxA-31282 26140 150 4130 OxA-31283 26120 150 4130 OxA-31284 26140 150 4150 OxA-31285 26310 150 4170 OxA-31286 26080 140 4190 OxA-31287 26010 150 4210 OxA-31288 25990 140 4230 OxA-31289 25880 150 4250 OxA-31290 26150 150 4270 OxA-31291 26040 140 4290 OxA-31292 26200 150 4310 OxA-31293 26000 140 4330 OxA-31294 25890 140 4350 OxA-31295 25840 140 4370 OxA-31296 25770 140 4390 OxA-31298 25590 160 4410 OxA-31299 25630 150 4430 OxA-31300 25700 150 4450 OxA-31301 25600 150 4470 OxA-31302 25670 160 4490 OxA-31303 25740 160 4490 OxA-31304 25750 160 4510 OxA-31305 25420 160 4530 OxA-31306 25240 150 4550 OxA-31307 25370 150 4570 OxA-31308 25320 140 4590 OxA-31309 25310 150 4610 OxA-31310 25340 150 4630 OxA-31311 25290 160 4650 OxA-31313 25370 150 4670 OxA-31314 25470 150 4690 OxA-31327 25350 140 4710 OxA-31315 25590 160 4730 OxA-31316 25210 150 4750 OxA-31317 25400 150 4770 OxA-31246 25500 180 4790 OxA-31318 25230 140 4810 OxA-31247 25440 220 4830 OxA-31319 25450 150 4850 OxA-31320 25540 160 4870 OxA-31321 25220 140 4890 OxA-31322 25400 150 4890 OxA-31323 25350 140 4910 OxA-31324 25260 140 4930 OxA-31248 25220 190 4950 OxA-31325 25430 140 4970 OxA-31326 25420 150 4990 OxA-31339 25330 140