# Comparison of published versus recalibrated age models for Lake Lading, Indonesia #----------------------------------------------------------------------- # World Data Service for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program #----------------------------------------------------------------------- # NOTE: Please cite original publication, online resource and date accessed when using this data. # If there is no publication information, please cite Investigator, title, online resource and date accessed. # # Description/Documentation lines begin with # # Data lines have no # # # Online_Resource: https://www.ncdc.noaa.gov/paleo/study/21731 # Description: NOAA Landing Page # Online_Resource: http://www1.ncdc.noaa.gov/pub/data/paleo/pages2k/dixon2017australasia/dixon2017lakelading.txt # Description: NOAA location of the template # # Original_Source_URL: http://hurricane.ncdc.noaa.gov/pls/paleox/f?p=519:1:0::::P1_STUDY_ID:14129 # Description: # # Archive: plant wax dD # # Parameter_Keywords: #--------------------------------------- # Contribution_Date # Date: 2017-12-11 #--------------------------------------- # File_Last_Modified_Date # Date: 2017-12-11 #--------------------------------------- # Title # Study_Name: Comparison of published versus recalibrated age models for Lake Lading, Indonesia #--------------------------------------- # Investigators # Investigators: Dixon, Bronwyn C.; Tyler, Jonathan J.; Lorrey, Andrew M; Goodwin, Ian D; Gergis, Joelle; Drysdale, Russell N #--------------------------------------- # Description_Notes_and_Keywords # Description: # Provided Keywords: age modelling, Bayesian #--------------------------------------- # Publication # Authors: Dixon, Bronwyn C.; Tyler, Jonathan J.; Lorrey, Andrew M; Goodwin, Ian D; Gergis, Joelle; Drysdale, Russell N # Published_Date_or_Year: 2017 # Published_Title: Low-resolution Australasian palaeoclimate records of the last 2000 years # Journal_Name: Climate of the Past # Volume: # Edition: # Issue: # Pages: # Report Number: # DOI: # Online_Resource: # Full_Citation: # Abstract: Non-annually resolved palaeoclimate records in the Australasian region were compiled to facilitate investigations of decadal to centennial climate variability over the past 2000 years. A total of 661 lake/wetland, geomorphic, marine, and speleothem records were identified and then assessed against a set of a priori criteria based on temporal resolution, record length, dating methods, and confidence of the proxy-climate relationship over the Common Era. A high quality subset of 22 records across Australasia met the criteria and they are endorsed for subsequent analyses. New chronologies based on progressive Bayesian techniques were constructed for the high quality records to ensure a consistent approach to age modelling and quantification of age uncertainties. Chronological uncertainty was the primary reason why records did not meet the selection criteria. Despite present limitations, existing proxies and reconstruction techniques that successfully capture climate variability in the region show potential to address spatial gaps and expand the range of climate variables covering the last 2000 years from the Australasian region. #--------------------------------------- # Publication # Authors: Konecky, B. L.; Russell, J. M.; Rodysill, J. R.; Vuille, M.; Bijaksana, S.;Huang, Y. S. # Published_Date_or_Year: 2013 # Published_Title: Intensification of southwestern Indonesian rainfall over the past millennium # Journal_Name: Geophysical Research Letters # Volume: 40 # Edition: # Issue: 2 # Pages: 386-391 # Report Number: # DOI: 10.1029/2012gl054331 # Online_Resource: # Full_Citation: Konecky, B. L., Russell, J. M., Rodysill, J. R., Vuille, M., Bijaksana, S. & Huang, Y. S. 2013. Intensification of southwestern Indonesian rainfall over the past millennium. Geophysical Research Letters, 40, 386-391. # Abstract: Modern precipitation in Indonesia is strongly correlated to variations in the Asian/Australasian monsoons, the Walker circulation, and migrations of the Intertropical Convergence Zone (ITCZ), but controls on multidecadal to millennial rainfall variations are less clear. We present a new, high-resolution, precipitation proxy reconstruction from Lake Lading (8 degrees S, 113 degrees E), Java, from 850 Common Era (C. E.) to present, based on the delta D of terrestrial plant waxes. We find that rainfall has steadily increased in Java over the past millennium. This increase persists into the twentieth century despite evidence from other tropical proxy records for a northward ITCZ migration during the last two centuries, which should introduce drier conditions to Java. Aspects of this long-term increase in rainfall resemble records from the Northern Hemisphere, tropical Indo-Pacific, suggesting that strengthening Walker circulation played an important role in this long-term increase in rainfall and decrease in the dD of precipitation, while ITCZ variations may have been important to climate variations on multidecadal to centennial timescales #--------------------------------------- # Funding_Agency # Funding_Agency_Name: # Grant: #--------------------------------------- # Site Information # Site_Name: Lake Lading # Location: # Country: # Northernmost_Latitude: -8.008817 # Southernmost_Latitude: -8.008817 # Easternmost_Longitude: 138.312 # Westernmost_Longitude: 138.312 # Elevation: 324 #--------------------------------------- # Data_Collection # Collection_Name: LAD08-2P, LAD08-3P # First_Year: 1098.1 # Last_Year: -50.2 # Time_Unit: cal yr BP # Core_Length: ~560 # Notes: collected in 8.6m water depth, composite core #--------------------------------------- # Chronology_Information # Chronology: # # Lab ID AA37293 OS-79520 AA37294 OS-77312 AA37294 Beta 228346 OS-77313 # Dated material Plant/wood Bulk sediment Plant/wood Plant/wood Plant/wood Plant/wood Plant/wood # depth_bot (mm) NaN NaN NaN NaN NaN NaN NaN # depth_top (mm) 1784 2522 3267 3711 3756 4332 5658 # age (bp) NaN NaN NaN NaN NaN NaN NaN # age14C (bp) 236 620 412 690 692 830 1190 # age_error (years) 30 25 40 25 36 40 25 # calibrated age (cal BP) 1790 1311 1466 1287 1287 1218 845 # 2-sigma error of cal age (years) NaN NaN NaN NaN NaN NaN NaN # cal_age_range_old (bp) 1668 1323 1495 1297 1300 1256 880 # cal_age_range_young (2_s) 1644 1299 1436 1277 1273 1181 810 # depth (mm) NaN NaN NaN NaN NaN NaN NaN # thickness (mm) NaN NaN NaN NaN NaN NaN NaN # notes 1 s age range 1 s age range; age excluded from published age model 1 s age range 1 s age range 1 s age range 1 s age range 1 s age range # #--------------------------------------- # Variables # Data variables follow that are preceded by "##" in columns one and two. # Variables list, one per line, shortname-tab-longname components (9 components: what, material, error, units, seasonality, archive, detail, method, C or N for Character or Numeric data) ## Depth_cm ,Depth in the core,NA,,cm,NA,NA,,NA,N ## PublishedAge_YBP ,Ages from original record publication,NA,,Years before present (present=1950CE),NA,NA,,NA,N ## BACON0.05CI ,5% confidence interval age as calculated in BACON age modelling software,NA,,Years before present (present=1950CE),NA,NA,,NA,N ## BACON0.95CI ,95% confidence interval age as calculated in BACON age modelling software,NA,,Years before present (present=1950CE),NA,NA,,NA,N ## BACONmedian ,median sample age as calculated in BACON age modelling software,NA,,Years before present (present=1950CE),NA,NA,,NA,N ## BACONwmean ,weighted mean age as calculated in BACON age modelling software,NA,,Years before present (present=1950CE),NA,NA,,NA,N ## dDwax_‰ VSMOW ,Leaf wax delta-D(C28 n-alkanoic acid),terrestrial C4 leaves,pooled standard deviation of triplicate samples = 1.08‰, 1s error on fatty acid methyl ester standard = 2.5‰, ‰VSMOW,Oct-Mar,Leaf wax delta-D(C28 n-alkanoic acid),Samples for dDwax analysis were taken at an average resolution of 8.5years (ranging approximately 3 to 25years). One hundred seventy sediment samples were freeze-dried, homogenized, and extracted using a Dionex Accelerated Solvent Extractor 350 to yield the soluble lipid fraction. Fatty acids were then purified according to previously described methods [Konecky et al., 2011]. dD was measured on the C28 n-alkanoic acid, the dominant homologue in all samples, using gas chromatography- pyrolysis-isotope ratio-mass spectrometry,,N ## dDwax_low-pass filtered ,Leaf wax delta-D(C28 n-alkanoic acid),terrestrial C4 leaves,, ‰VSMOW,Oct-Mar,Leaf wax delta-D(C28 n-alkanoic acid),,,N #------------------------ # Data # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing Value: N/A Depth_cm PublishedAge_YBP BACON0.05CI BACON0.95CI BACONmedian BACONwmean dDwax_‰ VSMOW dDwax_low-pass filtered 12.0 -50.2 -51.9 -46.3 -49.1 -49.1 -153.654 -153.6 17.0 -45.5 -46.1 -40.8 -43.4 -43.4 -153.996 -153.8 22.0 -40.8 -42.2 -34.4 -38.7 -38.6 -154.129 -153.6 27.0 -36 -37.7 -29.8 -33.7 -33.7 -155.179 -152.9 32.5 -30.8 -33.5 -22.3 -28.6 -28.3 -149.389 -152.4 37.0 -26.4 -29.7 -17.8 -23.8 -23.7 -151.12 -152 41.2 -22.4 -26.4 -11.7 -19.6 -19.4 -152.577 -151.9 47.0 -16.7 -21 -5 -13.5 -13.3 -151.128 -152 52.0 -11.8 -16.4 1 -8.1 -7.9 -152.213 -151.9 57.0 -6.7 -11.7 8 -2.7 -2.4 -153.53 -151.7 62.0 -1.6 -7 14.8 3.1 3.5 -152.223 -151.4 66.8 3.4 -2.6 23.7 8.9 9.5 -151.944 -151.1 72.0 8.9 2.6 32.4 15.7 16.3 -148.904 -151.1 77.5 15 8.2 43.7 23.6 24.4 -148.757 -151.3 83.3 21.6 14.3 57.2 32.4 33.4 -152.811 -151.5 87.5 26.5 19 68.7 39.3 40.7 -149.823 -151.3 93.0 33.2 24.7 85.1 48.8 50.7 -153.891 -150.4 98.0 39.4 30.9 99.6 57.4 59.8 -148.974 -148.8 102.0 44.6 35.8 110.6 64.3 67 -150.233 -146.7 104 47.2 38.2 117 67.8 70.7 -140.701 -144.9 106.5 50.5 41.5 123.8 72.2 75.3 -139.647 -143.7 112.0 57.9 49.1 138.9 81.8 85.4 -144.563 -143.4 114.5 61.4 52.4 146.2 86 89.8 -144.674 -143.9 117.0 64.9 55.8 152.7 90.5 94.4 -149.703 -144.7 121.8 71.8 62.1 165.9 98.7 103.2 -143.548 -145 124.5 75.8 65.1 172.7 103.4 108.2 -144.027 -144.5 126.5 78.8 68.2 178.1 106.8 111.8 -138.1 -143.1 131.8 86.9 76 191.5 116 121.6 -142.489 -141.3 137.0 95 83.6 204.5 125.1 131.1 -144.748 -139.8 139.5 99 87.4 211.2 129.3 135.7 -137.077 -139.3 141.8 102.8 91 216.1 133.1 139.9 -140.785 -140.2 144 106.4 94.1 221.5 137 143.9 -141.817 -142.6 147.0 111.4 99 228.8 142.1 149.4 -144.51 -145.7 150 116.5 103.1 236.6 147.3 155 -148.891 -148.7 152.8 121.3 107.6 242.7 151.9 160 -150.702 -150.4 156.3 127.5 112.9 250.7 157.7 166.1 -150.356 -150.3 161.5 136.8 121.3 262.6 166.7 175.4 -148.798 -148.1 164 141.4 125 267.8 170.8 179.8 -145.58 -144.6 166.5 146 129.5 273.6 175.2 184.3 -143.415 -140.8 169.5 151.7 134.7 280.2 180.4 189.7 -132.262 -137.8 171.5 155.5 138.8 283.8 183.9 193.3 -136.381 -136.5 173.5 159.4 142.5 287.3 187.8 197 -135.13 -137 176.4 165.1 147.8 292.7 193.1 202.2 -143.794 -138.9 181.6 175.4 157.1 303.1 203.1 212 -142.889 -141.4 187.4 187.3 165.5 315.2 214.2 223.7 -143.609 -143.5 192.4 197.9 172.9 325 224 233.7 -140.353 -144.7 197.4 208.6 181.2 334.5 233.8 243.6 -144.098 -144.9 202.4 219.6 189.6 344 244.1 253.6 -145.703 -144.2 212.4 242.2 208.8 362.7 265 273.7 -146.373 -143 217.4 253.8 218 371.9 275.6 283.6 -140.563 -141.8 222.4 265.7 227.4 381.6 285.9 293.7 -138.073 -140.9 227.4 277.7 237.1 392 296.4 303.8 -141.593 -140.2 232.4 289.8 247.3 401.8 307 314 -139.657 -139.7 237.4 302.2 257.3 411.6 317.7 324.1 -137.487 -139.3 241.0 311.2 264.1 418.8 325 331.4 -142.022 -139 246.0 323.8 273.1 428.2 335.5 341.6 -141.743 -138.8 250.7 335.8 283.6 437.2 345.4 351.1 -133.419 -138.9 272.3 361.2 329 477.5 389.9 394.4 -139.638 -139.4 277.3 374.4 339.7 488 400.4 404.6 -140.269 -140.1 282.3 387.7 351.4 497.5 410.4 414.7 -141.523 -140.9 287.3 401 361.5 507.8 420.7 424.7 -141.392 -141.4 292.3 414.5 372.8 518 430.7 434.8 -143.662 -141.5 296.9 427 382.4 527.4 439.9 444 -139.517 -141.1 302.3 441.8 394.1 539.2 451.2 455 -140.697 -140.3 306.0 452 402.4 547.6 458.8 462.5 -138.604 -139.5 312.3 469.3 417.3 560.2 471.5 475.3 -137.933 -138.7 317.3 483.2 428.9 571.1 481.3 485.4 -139.303 -138.2 322.3 497.2 440.3 582.5 491.5 495.5 -139.191 -138 325 504.7 446.7 588.4 497 500.9 -132.63 -137.9 327.3 511.1 453.5 592.4 501.2 505.7 -145.999 -137.8 330 518.7 458.7 598.1 506.7 511.3 -134.783 -137.7 332.3 525.2 464.4 601.5 512.2 517 -136.245 -137.5 335.25 533.4 470.5 606.5 519.1 524.3 -134.844 -137.2 337.3 539.2 475.6 610.5 524 529.5 -139.032 -136.9 340 546.8 480.9 615.6 530.6 536.4 -136.057 -136.5 342.3 553.2 486.3 619.3 535.9 542.1 -137.647 -136.2 343.85 557.6 489.6 622.2 539.6 545.9 -136.875 -135.8 345.6 562.5 493.3 625.4 543.7 550.2 -134.468 -135.5 348.1 569.5 498.6 630.1 549.2 556.4 -132.889 -135.5 350.9 577.3 505.2 635.8 555.4 563.3 -136.302 -135.9 353.6 584.9 511.8 640.6 561.6 570.1 -137.642 -136.6 355.9 591.3 517.3 645.2 566.7 575.8 -138.343 -137.7 358.6 598.8 524.2 650 572.3 582.2 -142.374 -138.8 360.9 605.2 529.7 654.3 577.1 587.8 -136.333 -139.9 363.6 612.7 536.5 658.8 582.4 594.5 -136.882 -140.4 366.1 619.6 543.5 663.3 587.2 600.6 -140.029 -140.3 372.4 636.9 562.5 673 598.8 615.5 -144.14 -139.5 376.1 646.9 570 680.3 605.9 623.3 -141.533 -138.2 378.6 653.7 573.6 685.9 612.2 628.1 -132.632 -136.7 380.9 659.9 577 691.7 619.4 632.7 -133.94 -135.5 386.1 673.9 584.8 706.1 639.7 644.2 -133.221 -134.9 390.9 686.8 592.3 718.7 653.4 654.7 -135.932 -135.1 396.1 700.7 601.8 731.2 666.5 665.9 -141.166 -136 400.9 713.4 611.1 743.5 677.6 676.5 -136.57 -137.2 403.6 720.6 616.3 750 683.5 682.6 -132.439 -138.3 406.1 727.3 621.9 756.5 689.3 688.2 -142.712 -139.1 410.9 740 631.9 767.4 700.4 698.9 -138.398 -139.2 416.1 753.9 643.5 778.9 712.1 710.5 -139.452 -138.5 420.9 766.7 655 789.9 722.5 721.1 -135.036 -137.1 426.1 780.6 667 802.5 734.1 732.8 -135.76 -136.2 430.9 793.5 679.2 813.5 744.6 743.6 -136.515 -135.4 435.8 806.7 690.7 825.4 755.4 754.4 -134.404 -134.9 440.8 820.3 700.5 837.1 766.8 765.7 -135.811 -134.4 445.8 833.9 709.7 849.4 777.8 777.3 -133.997 -134.1 450.8 847.7 718.8 862.2 789.2 788.9 -133.779 -133.8 455.3 860.1 727.7 873.6 799.2 799.2 -131.071 -133.5 456.6 863.7 730.5 876.5 802.1 802.2 -133.366 -133.1 461.3 876.7 740.4 887.7 812.7 813.1 -135.886 -132.7 463.3 882.3 744.6 893.7 817.5 817.9 -130.256 -132.1 467.3 893.4 752.8 904.5 826.8 827.4 -131.793 -131.5 468.6 897 755.6 908.3 830 830.5 -129.318 -131 470.8 903.2 760.1 914.3 835.1 835.8 -131.575 -130.7 473.6 911 765.4 921.1 841.5 842.4 -132.687 -130.7 475.8 917.2 769.9 926.2 846.4 847.5 -130.836 -131.2 478.6 925.1 775.7 933 852.8 853.9 -130.634 -132.1 480.8 931.3 780 938.4 857.9 859 -132.58 -132.6 483.6 939.2 786.7 945.4 864.5 865.6 -136.437 -132.4 485.8 945.4 791.3 951 869.6 870.7 -129.367 -131.8 488.6 953.3 797.5 957.7 876.2 877 -131.637 -131 490.8 959.5 802 963.4 881.2 882.1 -128.759 -130.5 493.6 967.5 808.1 969.9 887.7 888.5 -133.545 -130.6 496.3 975.1 813.7 976.5 894.1 894.7 -130.032 -131.5 501.6 990.2 825.6 989.9 906.7 907.1 -130.29 -133 503.55 995.8 829.2 993.9 911.2 911.5 -137.191 -134.7 540.3 1019.9 912.8 1083.1 998.9 997.8 -135.72 -136.1 542.3 1025.6 917.8 1087.8 1003.9 1002.5 -138.464 -136.7 544.6 1032.2 922.2 1093.9 1009.7 1007.9 -136.171 -136.5 547.3 1039.9 929.1 1100.1 1016.9 1014.2 -134.389 -135.6 549.3 1045.6 934 1105.5 1022.1 1019.1 -134.672 -134.5 552.3 1054.2 941.7 1111.8 1029.7 1025.9 -131.754 -133.5 554.6 1060.8 947.1 1117.4 1034.8 1031 -136.372 -132.9 557.3 1068.5 953.3 1122.9 1042.2 1037.2 -128.294 -132.8 559.3 1074.3 957.3 1127.8 1047.3 1041.9 -137.354 -133.1 562.05 1082.1 964.5 1134.6 1054.5 1048.4 -133.43 -133.8 565.55 1092.2 972.5 1144 1063.7 1056.9 -132.632 -134.6 567.6 1098.1 978.7 1147.7 1068.8 1061.7 -135.454 -135.5