# Lynch's Crater, Australia Last Glacial Carbon and Pollen 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/22391 # Description: # Online_Resource: https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/australia/lynchs2017pollen.txt # Description: # # Original_Source_URL: # Description: # # Description/Documentation lines begin with # # Data lines have no # # # Archive: Paleolimnology # # Dataset DOI: # # Parameter_Keywords: geochemistry, population abundance #-------------------- # Contribution_Date # Date: 2017-07-17 #-------------------- # File_Last_Modified_Date # Date: 2017-07-17 #-------------------- # Title # Study_Name: Lynch's Crater, Australia Last Glacial Carbon and Pollen 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: Peat carbon content and pollen data for the last glacial from Lynch's Crater in tropical Australia. # 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, 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: Lynch's Crater # Location: Australia/New Zealand>Australia # Country: Australia # Northernmost_Latitude: -17.37 # Southernmost_Latitude: -17.37 # Easternmost_Longitude: 145.69 # Westernmost_Longitude: 145.69 # Elevation: 760 m #------------------ # Data_Collection # Collection_Name: LC98pollen # Earliest_Year: 36059 # Most_Recent_Year: 22662 # Time_Unit: Cal. Year BP # Core_Length: 3.0 m # Notes: #------------------ # Chronology_Information # Chronology: # Calibration undertaken using spliced kauri-Lake Suigetsu curve reported by: # Turney, C.S.M., Palmer, J., Bronk Ramsey, C., Adolphi, F., Muscheler, R., Hughen, K.A., # Staff, R.A., Jones, R.T., Thomas, Z.A., Fogwill, C.J. and Hogg, A. (2016) # 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). # Quaternary Science Reviews, 137, 126-134. # # Depth cm Lab no 14C age, BP 1 sd Mean cal age, BP Mean cal 1 sd Comments # 697.9 Wk-36775 29645 181 33874 286 # 683.4 Wk-36774 29601 187 33463 208 # 667.9 Wk-36773 28673 162 32707 398 # 662.7 Wk-36772 27885 149 32353 372 # 657.5 Wk-36771 27693 146 32198 403 # 650.3 Wk-36770 27560 151 31893 456 # 645.1 Wk-32796 27685 294 31682 397 # 640.9 Wk-32795 27457 275 31536 329 # 637.8 Wk-32794 27719 283 31469 277 # 632.6 Wk-32792 27660 281 31344 137 # 629.5 Wk-32793 27140 279 31281 95 # 624.4 Wk-32791 27180 273 31197 98 # 619.2 Wk-32790 26978 258 31088 118 # 614 Wk-32789 26958 260 30958 160 # 613 Wk-36769 26812 132 30921 172 # 608.8 Wk-32788 26070 232 30475 231 # 604.7 Wk-32394 25809 101 30208 131 # 598.4 Wk-32393 24359 180 Significant outlier so excluded from age model # 597.4 Wk-32787 25318 212 30004 117 # 593.2 Wk-32392 25662 213 29941 130 # 588 Wk-32391 25526 209 29857 138 # 582.8 Wk-32390 25777 218 29773 142 # 577.6 Wk-32389 25363 230 29671 147 # 572.4 Wk-32388 25256 217 29557 158 # 567.2 Wk-32387 25154 198 29435 159 # 562 Wk-32386 24881 192 29323 148 # 556.8 Wk-32385 25258 201 29229 150 # 551.6 Wk-32384 25246 206 29135 148 # 546.4 Wk-32383 25059 220 29033 146 # 541.1 Wk-32786 24855 200 28914 140 # 535.9 Wk-32785 24868 202 28801 120 # 530.7 Wk-32784 24771 198 28664 101 Combined with Wk-36768 # 530.7 Wk-36768 24603 109 Combined with Wk-32784 # 525.5 Wk-32783 24223 199 28390 169 # 520.3 Wk-32782 24196 195 28179 174 # 515.1 Wk-32781 23638 175 27936 129 # 509.9 Wk-32780 23820 179 27837 89 # 508.5 Wk-32767 23783 95 27814 82 # 503.5 Wk-32766 22506 83 Significant outlier so excluded from age model # 498.5 Wk-32765 17276 50 Significant outlier so excluded from age model # 494.5 Wk-32764 23218 89 27578 59 # 489.5 Wk-32763 23368 90 27531 59 # 465.5 Wk-32762 22520 87 26655 269 # 405.5 Wk-36761 18876 58 22682 241 # #---------------- # 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) # ## age_calBP age, , , calendar years before present, , , , ,N, ## Sedge/Grass Ratio of sedge to grass pollen, sediment, , , ,pollen, , ,N, # #---------------- # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing Values: # age_calBP Sedge/Grass 22662 2.5000 23313 1.8400 23973 0.8378 24635 0.6667 25299 0.8437 25961 1.5517 26292 0.5000 26622 0.0714 27002 1.0000 27364 1.3214 27586 3.9048 27752 1.1875 27934 4.0000 28369 8.2083 28777 0.8876 29001 1.6667 29196 0.3750 29387 0.1579 29613 0.6364 29805 0.5882 29968 0.0833 30226 3.0667 30982 1.2105 31206 1.3125 31401 0.1667 31678 8.4800 32091 5.7500 32509 2.2250 33053 5.4146 33508 7.1563 33791 16.5385 34145 8.8696 34528 8.0417 34910 9.2727 35293 9.3810 35676 7.1667 36059 1.8161