# Oro Lake, Saskatchewan 6,800 Year Salinity Reconstruction #----------------------------------------------------------------------- # 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/23073 # Description: NOAA Landing Page # # Online_Resource: https://www1.ncdc.noaa.gov/pub/data/paleo/pages2k/NAm2kHydro-2017/noaa-templates/data-version-1.0.0/Oro.Michels.2007.txt # Online_Resource_Description: This file. NOAA WDS Paleo formatted metadata and data for version 1.0.0 of this dataset. # # Online_Resource: https://www1.ncdc.noaa.gov/pub/data/paleo/pages2k/NAm2kHydro-2017/data-version-1.0.0/Oro.Michels.2007.lpd # Online_Resource_Description: Linked Paleo Data (LiPD) formatted file containing the same metadata and data as this file, for version 1.0.0 of this dataset. # # Description/Documentation lines begin with # # Data lines have no # # # Archive: Climate Reconstruction # Parameter_Keywords: salinity # Dataset_DOI: # #------------------ # Contribution_Date # Date: 2017-11-15 #------------------ # File_Last_Modified_Date # Modified_Date: 2018-02-13 #------------------ # Title # Study_Name: Oro Lake, Saskatchewan 6,800 Year Salinity Reconstruction #------------------ # Investigators # Investigators: Michels, A.; Laird, K.R.; Wilson, S.E.; Thomson, D.; Leavitt, P.R.; Oglesby, R.J.; Cumming, B.F. #------------------ # Description_Notes_and_Keywords # Description: Diatom-inferred mean log salinity from sediments collected in Oro Lake, Saskatchewan for the past 6,800 years. #------------------ # Publication # Authors: ASTRID MICHELS, KATHLEEN R. LAIRD, SUSAN E. WILSON, DAVID THOMSON, PETER R. LEAVITT, ROBERT J. OGLESBY and BRIAN F. CUMMING # Published_Date_or_Year: 2007-07-01 # Published_Title: Multidecadal to millennial-scale shifts in drought conditions on the Canadian prairies over the past six millennia: implications for future drought assessment # Journal_Name: Global Change Biology # Volume: 13 # Edition: # Issue: 7 # Pages: 1295-1307 # Report: # DOI: 10.1111/j.1365-2486.2007.01367.x # Online_Resource: http://onlinelibrary.wiley.com/doi/10.1111/j.1365-2486.2007.01367.x/abstract # Full_Citation: # Abstract: Three high-resolution climatic reconstructions, based on diatom analyses from lake sediment cores from the Canadian prairies, show that shifts in drought conditions have prevailed on centennial to millennial time scales for at least the past six millennia. These shifts in mean aridity exhibit broad regional synchrony, with particularly pronounced shifts at all sites between ~1700-2000 cal. yr bp and ~3600-3900 cal. yr bp, as well as at ~5400-5500 cal. yr bp for the two sites which extend back to at least 6000 cal. yr bp. The two Saskatchewan lakes exhibited significant coherence in both the timing and direction of these shifts, whereas inferred changes at the westernmost site in Alberta were significantly correlated to the Saskatchewan sites, but opposite in sign, and exhibited more high-frequency variation on the scale of centuries. The mechanisms behind these abrupt shifts in aridity are poorly understood, but may be linked to changes in oceanic-atmospheric interactions that influence the mean position of the jetstream and the associated storm tracks. Natural shifts in mean climatic conditions may accelerate with increasing carbon dioxide levels intensifying the likelihood of extreme droughts in North American prairies. #------------------ # Funding_Agency # Funding_Agency_Name: Canadian Foundation of Climate Atmospheric Sciences # Grant: #------------------ # Site_Information # Site_Name: Oro Lake # Location: North America>Canada>Saskatchewan # Country: Canada # Northernmost_Latitude: 49.78 # Southernmost_Latitude: 49.78 # Easternmost_Longitude: -105.33 # Westernmost_Longitude: -105.33 # Elevation: 686 #------------------ # Data_Collection # Collection_Name: Oro.Michels.2007 # Earliest_Year: 6896.144224 # Most_Recent_Year: 76.28425723 # Time_Unit: BP # Core_Length: # Notes: #------------------ # Chronology: # DepthT DepthB x14CAge Error x2_sigmaRange MedianAge MaterialDated # 190.5 194.5 1728.0 83.0 -350.0 1620.0 charcoal # 338.5 346.5 3567.0 42.0 -256.0 3830.0 charcoal # 350.0 350.5 3776.0 57.0 -320.0 4150.0 plant # 399.0 407.0 3465.0 38.0 -195.0 3750.0 charcoal # 404.0 404.5 4222.0 45.0 -246.0 4770.0 thorn # 433.0 433.5 3571.0 44.0 -260.0 3830.0 twigs # 561.5 570.5 5782.0 42.0 -203.0 6600.0 charcoal # #------------------ # Variables # # Data variables follow that are preceded by "##" in columns one and two. # Data line variables format: Variables list, one per line, shortname-tab-longname-tab-longname components # 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_CE age, , , year CE, , , , ,N, ## logSalinity salinity,,,unitless, , climate reconstruction, , ,N, diatom-inferred mean log salinity ## age_calBP age, , , calendar years before present, , , , ,N, ## depth_cm depth, , , cm, , , , ,N, # #------------------ # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header) # Missing_Values: nan # age_CE logSalinity age_calBP depth_cm # 1873.716 3.081 76.284 12.0 # 1851.99 3.77 98.01 14.0 # 1830.303 4.362 119.697 16.0 # 1808.655 3.822 141.345 18.0 # 1787.045 4.422 162.955 20.0 # 1765.472 4.421 184.528 22.0 # 1743.937 4.447 206.063 24.0 # 1700.975 3.854 249.025 28.0 # 1679.547 4.438 270.453 30.0 # 1658.155 4.327 291.845 32.0 # 1636.797 4.451 313.203 34.0 # 1615.473 4.273 334.527 36.0 # 1594.182 2.895 355.818 38.0 # 1572.924 3.358 377.076 40.0 # 1551.698 2.996 398.302 42.0 # 1530.504 3.547 419.496 44.0 # 1509.342 4.171 440.658 46.0 # 1488.21 3.359 461.79 48.0 # 1467.108 3.241 482.892 50.0 # 1446.036 4.377 503.964 52.0 # 1424.993 3.875 525.007 54.0 # 1403.978 4.395 546.022 56.0 # 1382.992 3.97 567.008 58.0 # 1362.033 2.494 587.967 60.0 # 1341.101 4.178 608.899 62.0 # 1320.196 4.053 629.804 64.0 # 1299.317 4.118 650.683 66.0 # 1278.463 3.415 671.537 68.0 # 1257.634 4.081 692.366 70.0 # 1236.829 4.027 713.171 72.0 # 1216.048 4.096 733.952 74.0 # 1195.29 4.147 754.71 76.0 # 1174.556 4.053 775.444 78.0 # 1153.843 4.257 796.157 80.0 # 1133.152 4.089 816.848 82.0 # 1112.482 4.396 837.518 84.0 # 1091.833 3.531 858.167 86.0 # 1071.205 3.801 878.795 88.0 # 1050.595 4.392 899.405 90.0 # 1030.005 4.319 919.995 92.0 # 1009.433 4.421 940.567 94.0 # 988.88 4.106 961.12 96.0 # 958.082 4.239 991.918 100.0 # 947.824 4.1 1002.176 102.0 # 927.322 4.206 1022.678 104.0 # 906.835 2.72 1043.165 106.0 # 886.363 3.738 1063.637 108.0 # 865.907 4.073 1084.093 110.0 # 845.464 4.151 1104.536 112.0 # 825.036 3.684 1124.964 114.0 # 804.62 3.776 1145.38 116.0 # 784.218 4.108 1165.782 118.0 # 763.827 4.104 1186.173 120.0 # 743.449 3.675 1206.551 122.0 # 723.081 4.29 1226.919 124.0 # 702.724 4.396 1247.276 126.0 # 682.377 4.517 1267.623 128.0 # 662.04 3.448 1287.96 130.0 # 641.711 4.421 1308.289 132.0 # 621.391 3.856 1328.609 134.0 # 601.079 3.888 1348.921 136.0 # 580.775 3.8 1369.225 138.0 # 560.477 4.263 1389.523 140.0 # 540.186 4.408 1409.814 142.0 # 519.901 3.223 1430.099 144.0 # 499.621 3.088 1450.379 146.0 # 479.345 3.97 1470.655 148.0 # 459.074 3.794 1490.926 150.0 # 438.807 4.515 1511.193 152.0 # 418.543 4.536 1531.457 154.0 # 398.282 4.448 1551.718 156.0 # 378.022 4.12 1571.978 158.0 # 357.765 4.113 1592.235 160.0 # 337.508 4.428 1612.492 162.0 # 317.252 4.46 1632.748 164.0 # 296.996 4.451 1653.004 166.0 # 276.739 4.098 1673.261 168.0 # 256.482 4.028 1693.518 170.0 # 236.223 4.413 1713.777 172.0 # 215.962 4.122 1734.038 174.0 # 195.698 4.47 1754.302 176.0 # 175.431 4.552 1774.569 178.0 # 155.16 4.475 1794.84 180.0 # 134.885 4.326 1815.115 182.0 # 114.606 4.492 1835.394 184.0 # 94.321 3.942 1855.679 186.0 # 74.03 4.222 1875.97 188.0 # 53.733 3.215 1896.267 190.0 # 33.429 4.339 1916.571 192.0 # 13.118 4.642 1936.882 194.0 # -7.201 4.535 1957.201 196.0 # -27.529 4.576 1977.529 198.0 # -47.865 4.443 1997.865 200.0 # -68.211 4.376 2018.211 202.0 # -88.568 4.523 2038.568 204.0 # -108.934 4.478 2058.934 206.0 # -129.312 4.439 2079.312 208.0 # -149.701 4.401 2099.701 210.0 # -170.103 4.455 2120.103 212.0 # -190.517 4.211 2140.517 214.0 # -210.944 4.541 2160.944 216.0 # -231.385 4.43 2181.385 218.0 # -251.841 4.576 2201.841 220.0 # -272.311 4.338 2222.311 222.0 # -292.796 4.394 2242.796 224.0 # -313.298 4.545 2263.298 226.0 # -333.815 4.554 2283.815 228.0 # -354.35 4.559 2304.35 230.0 # -374.902 4.637 2324.902 232.0 # -395.472 4.485 2345.472 234.0 # -416.061 4.604 2366.061 236.0 # -436.668 4.405 2386.668 238.0 # -457.295 4.565 2407.295 240.0 # -477.942 4.571 2427.942 242.0 # -498.61 4.443 2448.61 244.0 # -519.299 4.537 2469.299 246.0 # -540.01 4.329 2490.01 248.0 # -560.742 4.526 2510.742 250.0 # -581.498 4.494 2531.498 252.0 # -602.277 4.55 2552.277 254.0 # -623.079 4.456 2573.079 256.0 # -643.906 4.428 2593.906 258.0 # -664.758 4.362 2614.758 260.0 # -685.635 4.381 2635.635 262.0 # -706.538 4.515 2656.538 264.0 # -727.467 4.495 2677.467 266.0 # -748.424 4.563 2698.424 268.0 # -769.408 4.46 2719.408 270.0 # -790.42 4.498 2740.42 272.0 # -811.46 4.52 2761.46 274.0 # -832.529 4.418 2782.529 276.0 # -853.629 4.308 2803.629 278.0 # -874.758 4.39 2824.758 280.0 # -895.918 4.532 2845.918 282.0 # -917.109 4.369 2867.109 284.0 # -938.332 4.342 2888.332 286.0 # -959.587 4.352 2909.587 288.0 # -980.875 4.58 2930.875 290.0 # -1002.196 4.448 2952.196 292.0 # -1023.551 4.367 2973.551 294.0 # -1044.94 4.497 2994.94 296.0 # -1066.364 4.185 3016.364 298.0 # -1087.824 4.564 3037.824 300.0 # -1109.32 4.4 3059.32 301.0 # -1120.081 4.527 3070.081 303.0 # -1130.852 4.407 3080.852 305.0 # -1152.421 4.327 3102.421 307.0 # -1174.028 4.59 3124.028 309.0 # -1195.672 4.45 3145.672 311.0 # -1217.356 4.251 3167.356 313.0 # -1239.078 4.321 3189.078 315.0 # -1260.84 4.357 3210.84 317.0 # -1282.643 4.209 3232.643 319.0 # -1304.486 4.398 3254.486 321.0 # -1326.37 4.54 3276.37 323.0 # -1348.296 4.576 3298.296 325.0 # -1370.264 4.627 3320.264 327.0 # -1392.276 4.384 3342.276 329.0 # -1414.33 4.563 3364.33 331.0 # -1436.429 4.623 3386.429 333.0 # -1458.572 4.495 3408.572 335.0 # -1480.759 4.451 3430.759 337.0 # -1502.993 4.473 3452.993 339.0 # -1525.272 4.509 3475.272 341.0 # -1547.598 4.501 3497.598 343.0 # -1569.971 4.515 3519.971 345.0 # -1592.391 4.519 3542.391 347.0 # -1614.86 4.273 3564.86 349.0 # -1637.377 4.431 3587.377 351.0 # -1659.944 4.257 3609.944 353.0 # -1682.56 3.934 3632.56 355.0 # -1705.226 4.187 3655.226 357.0 # -1727.943 4.286 3677.943 359.0 # -1750.712 4.391 3700.712 361.0 # -1773.532 4.346 3723.532 363.0 # -1796.405 4.107 3746.405 365.0 # -1819.33 3.843 3769.33 367.0 # -1842.309 3.447 3792.309 369.0 # -1865.342 4.231 3815.342 371.0 # -1888.43 4.35 3838.43 373.0 # -1911.572 4.522 3861.572 375.0 # -1934.77 4.592 3884.77 377.0 # -1958.024 4.255 3908.024 379.0 # -1981.334 4.502 3931.334 381.0 # -2004.702 4.502 3954.702 383.0 # -2028.127 4.483 3978.127 385.0 # -2051.611 4.529 4001.611 387.0 # -2075.153 4.133 4025.153 389.0 # -2098.754 4.392 4048.754 391.0 # -2122.416 4.221 4072.416 393.0 # -2146.137 4.439 4096.137 395.0 # -2169.919 4.165 4119.919 397.0 # -2193.763 4.131 4143.763 400.0 # -2217.669 4.609 4167.669 402.0 # -2241.637 4.509 4191.637 404.0 # -2265.667 4.609 4215.667 406.0 # -2289.762 4.653 4239.762 408.0 # -2313.92 4.567 4263.92 410.0 # -2338.143 4.464 4288.143 412.0 # -2362.431 4.292 4312.431 414.0 # -2386.785 4.456 4336.785 416.0 # -2411.204 4.611 4361.204 418.0 # -2435.69 4.489 4385.69 420.0 # -2460.244 4.62 4410.244 422.0 # -2484.865 4.513 4434.865 424.0 # -2509.554 4.547 4459.554 426.0 # -2534.313 4.556 4484.313 428.0 # -2559.14 4.502 4509.14 430.0 # -2584.037 4.628 4534.037 432.0 # -2609.005 4.304 4559.005 434.0 # -2634.043 4.483 4584.043 436.0 # -2659.153 4.381 4609.153 438.0 # -2684.335 4.639 4634.335 440.0 # -2709.589 4.651 4659.589 442.0 # -2734.916 4.488 4684.916 444.0 # -2760.317 4.608 4710.317 446.0 # -2785.792 4.547 4735.792 448.0 # -2811.341 4.62 4761.341 450.0 # -2836.966 4.613 4786.966 452.0 # -2862.666 4.317 4812.666 454.0 # -2888.442 3.869 4838.442 456.0 # -2914.295 3.82 4864.295 458.0 # -2940.225 3.935 4890.225 460.0 # -2966.233 3.756 4916.233 462.0 # -2992.32 4.521 4942.32 464.0 # -3018.485 4.367 4968.485 466.0 # -3044.729 3.899 4994.729 468.0 # -3071.053 4.032 5021.053 470.0 # -3097.458 4.236 5047.458 472.0 # -3123.943 4.634 5073.943 474.0 # -3150.511 4.562 5100.511 476.0 # -3177.16 4.41 5127.16 478.0 # -3203.891 4.484 5153.891 480.0 # -3230.706 4.343 5180.706 482.0 # -3257.604 4.465 5207.604 484.0 # -3284.586 4.231 5234.586 486.0 # -3311.653 4.32 5261.653 488.0 # -3338.805 4.355 5288.805 490.0 # -3366.043 4.33 5316.043 492.0 # -3393.367 3.509 5343.367 494.0 # -3420.777 3.798 5370.777 496.0 # -3448.275 4.301 5398.275 500.0 # -3475.861 4.104 5425.861 502.0 # -3503.535 3.774 5453.535 504.0 # -3531.298 3.862 5481.298 506.0 # -3559.151 4.35 5509.151 508.0 # -3587.093 3.696 5537.093 510.0 # -3615.126 4.339 5565.126 512.0 # -3643.249 4.318 5593.249 514.0 # -3671.465 3.17 5621.465 516.0 # -3699.772 4.399 5649.772 518.0 # -3728.172 3.965 5678.172 520.0 # -3756.665 4.099 5706.665 522.0 # -3785.251 4.195 5735.251 524.0 # -3813.932 4.472 5763.932 526.0 # -3842.707 4.494 5792.707 528.0 # -3871.578 4.623 5821.578 530.0 # -3900.544 4.558 5850.544 532.0 # -3929.607 4.648 5879.607 534.0 # -3958.766 4.624 5908.766 536.0 # -3988.023 4.567 5938.023 538.0 # -4017.378 4.58 5967.378 540.0 # -4046.831 4.452 5996.831 542.0 # -4076.383 4.525 6026.383 544.0 # -4106.034 4.531 6056.034 546.0 # -4135.785 4.601 6085.785 548.0 # -4165.637 4.421 6115.637 550.0 # -4195.59 4.531 6145.59 552.0 # -4225.645 4.511 6175.645 554.0 # -4255.801 4.505 6205.801 556.0 # -4286.06 4.481 6236.06 558.0 # -4316.422 4.546 6266.422 560.0 # -4346.888 4.58 6296.888 562.0 # -4377.459 4.168 6327.459 564.0 # -4408.133 4.566 6358.133 566.0 # -4438.914 4.597 6388.914 568.0 # -4469.8 4.481 6419.8 570.0 # -4500.792 4.538 6450.792 572.0 # -4531.891 4.627 6481.891 574.0 # -4563.098 4.632 6513.098 576.0 # -4594.412 4.313 6544.412 578.0 # -4625.835 4.613 6575.835 580.0 # -4657.367 4.545 6607.367 582.0 # -4689.008 4.639 6639.008 584.0 # -4720.759 4.65 6670.759 586.0 # -4752.621 4.428 6702.621 588.0 # -4784.594 4.524 6734.594 590.0 # -4816.679 4.317 6766.679 592.0 # -4848.876 4.295 6798.876 594.0 # -4881.185 4.004 6831.185 596.0 # -4913.608 4.298 6863.608 598.0 # -4946.144 4.087 6896.144 600.0