Prelude Lake, Northwest Territories, Canada - cana291 Additional Site Information Sonia St-Onge Michael Pisaric Steve Kokelj Purpose of Collection: Climatology - precipitation analyses Detrend Method: Negative exponontial or linear regression with negative or 0 slope Cores are stored at: Department of Geography and Environmental Studies, Carleton University, Ottawa CANADA Attn: Michael Pisaric Notes: Samples were collected from rock outcrops in the Yellowknife region. There was little to no soil cover and ground cover was predominantly mosses and lichens. Reference: Pisaric, M.F.J., St-Onge, S.M. and Kokelj, S.V. In press. Tree-ring reconstruction of early-growing season precipitation from Yellowknife, Northwest Territories. Arctic, Antarctic and Alpine Research. Accepted June 24, 2009. COFECHA output: Chronology file name : CANA291.CRN Measurement file name : CANA291.RWL Date checked : 24JUL09 Checked by : B. Bauer Beginning year : 1853 Ending year : 2005 Principal investigators: Sonia St-Onge Michael Pisaric Steve Kokelj Site name : Prelude Lake Site location : Canada Species information : PIBN JACK PINE Latitude : 6233 Longitude : -11351 Elevation : 197M Series intercorrelation: 0.708 Avg mean sensitivity : 0.365 Avg standard deviation : 0.219 Avg autocorrelation : 0.626 Number dated series : 47 Segment length tested : 50 Number problem segments: 2 Pct problem segments : 0.85 PART 5: CORRELATION OF SERIES BY SEGMENTS: Prelude lake 16:57 Fri 24 Jul 2009 Page 5 ----------------------------------------------------------------------------------------------------------------------------------- Correlations of 50-year dated segments, lagged 25 years Flags: A = correlation under .3281 but highest as dated; B = correlation higher at other than dated position Seq Series Time_span 1850 1875 1900 1925 1950 1975 1899 1924 1949 1974 1999 2024 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 PRE1A 1862 2005 .63 .53 .51 .68 .73 .76 2 PRE1B 1862 2005 .64 .61 .63 .73 .80 .79 3 PRE2A 1872 2005 .71 .70 .68 .64 .64 .66 4 PRE2B 1872 2005 .66 .64 .65 .73 .77 .77 5 PRE3A 1913 2005 .80 .83 .72 .76 6 PRE3B 1911 2005 .76 .78 .78 .81 7 PRE4A 1873 2005 .61 .61 .74 .72 .74 .79 8 PRE4B 1873 2005 .62 .64 .77 .82 .82 .86 9 PRE5A 1875 2005 .67 .69 .77 .87 .88 10 PRE5B 1875 2005 .73 .55 .55 .82 .84 11 PRE6A 1875 2005 .67 .64 .70 .83 .83 12 PRE6B 1875 2005 .82 .80 .82 .91 .91 13 PRE8A 1862 2005 .84 .85 .82 .70 .76 .75 14 PRE8B 1864 2005 .71 .70 .70 .77 .81 .80 15 PRE11A 1896 2001 .54 .57 .81 .85 .86 16 PRE11B 1904 2005 .52 .53 .71 .75 17 PRE13A 1864 2005 .62 .69 .70 .71 .84 .85 18 PRE13B 1864 2005 .71 .43 .22B .42 .71 .77 19 PRE15A 1862 2004 .67 .63 .73 .80 .85 .84 20 PRE15B 1862 2005 .52 .47 .64 .76 .68 .71 21 PRE16A 1903 2005 .73 .79 .82 .84 22 PRE16B 1903 2005 .61 .78 .75 .75 23 PRE17A 1893 2003 .70 .71 .73 .82 .83 24 PRE17B 1893 2005 .74 .75 .73 .67 .69 25 PRE18A 1872 2005 .80 .81 .85 .82 .82 .82 26 PRE18B 1875 2005 .78 .82 .80 .77 .74 27 PRE19A 1870 2005 .60 .61 .70 .76 .83 .79 28 PRE19B 1864 1883 .72 29 PRE19BB 1890 2005 .67 .59 .70 .84 .82 30 PRE20A 1853 2005 .80 .79 .80 .77 .77 .77 31 PRE20B 1864 2005 .77 .76 .80 .71 .70 .72 32 PRE21A 1900 2005 .73 .55 .51B .52 33 PRE21B 1900 2005 .61 .56 .64 .42 34 PRE22A 1912 1999 .65 .69 .71 35 PRE22B 1912 2005 .63 .69 .80 .80 36 PRE23A 1874 2005 .61 .60 .68 .80 .78 .75 37 PRE23B 1875 2005 .58 .66 .78 .68 .68 38 PRE24A 1896 2005 .80 .79 .74 .76 .75 39 PRE24B 1890 2005 .84 .80 .72 .77 .77 40 PRE25A 1874 2005 .59 .58 .67 .71 .75 .77 41 PRE25B 1872 2005 .68 .67 .67 .60 .70 .72 42 PRE26A 1901 2005 .59 .51 .50 .51 43 PRE26B 1902 2000 .61 .47 .52 .49 44 PRE27A 1863 2005 .71 .66 .62 .68 .70 .70 45 PRE27B 1863 2005 .71 .72 .76 .65 .57 .57 46 PRE28A 1933 2005 .71 .69 .70 47 PRE28B 1927 2005 .79 .76 .77 Av segment correlation .68 .67 .68 .71 .75 .75 PART 7: DESCRIPTIVE STATISTICS: Prelude lake 16:57 Fri 24 Jul 2009 Page 8 ----------------------------------------------------------------------------------------------------------------------------------- Corr //-------- Unfiltered --------\\ //---- Filtered -----\\ No. No. No. with Mean Max Std Auto Mean Max Std Auto AR Seq Series Interval Years Segmt Flags Master msmt msmt dev corr sens value dev corr () --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- 1 PRE1A 1862 2005 144 6 0 .646 .38 .85 .149 .516 .302 2.84 .513 .034 2 2 PRE1B 1862 2005 144 6 0 .725 .41 1.22 .224 .695 .330 2.74 .466 -.033 1 3 PRE2A 1872 2005 134 6 0 .675 .25 .80 .175 .639 .562 2.76 .510 -.095 2 4 PRE2B 1872 2005 134 6 0 .725 .36 1.00 .208 .564 .414 2.67 .484 -.024 1 5 PRE3A 1913 2005 93 4 0 .762 .25 .89 .161 .438 .531 2.87 .438 .006 1 6 PRE3B 1911 2005 95 4 0 .773 .29 .76 .172 .537 .518 2.70 .415 .001 1 7 PRE4A 1873 2005 133 6 0 .707 .58 1.28 .258 .621 .301 2.57 .401 .057 1 8 PRE4B 1873 2005 133 6 0 .771 .54 1.28 .239 .669 .306 2.63 .463 -.035 1 9 PRE5A 1875 2005 131 5 0 .776 .47 1.31 .263 .360 .574 2.65 .449 .052 1 10 PRE5B 1875 2005 131 5 0 .699 .41 1.15 .240 .406 .496 2.83 .538 .020 1 11 PRE6A 1875 2005 131 5 0 .732 .36 .90 .176 .615 .372 2.67 .514 .034 2 12 PRE6B 1875 2005 131 5 0 .851 .42 1.07 .228 .648 .348 2.66 .392 .028 2 13 PRE8A 1862 2005 144 6 0 .796 .58 1.79 .338 .676 .350 2.93 .531 -.017 1 14 PRE8B 1864 2005 142 6 0 .752 .43 1.06 .202 .691 .311 2.72 .537 -.038 1 15 PRE11A 1896 2001 106 5 0 .721 .18 .54 .114 .635 .480 2.43 .412 .014 1 16 PRE11B 1904 2005 102 4 0 .627 .22 .94 .160 .650 .498 2.72 .430 -.038 2 17 PRE13A 1864 2005 142 6 0 .732 .38 .92 .162 .362 .375 2.63 .455 -.063 1 18 PRE13B 1864 2005 142 6 1 .540 .24 .60 .092 .375 .368 2.49 .348 -.028 1 19 PRE15A 1862 2004 143 6 0 .742 .34 1.19 .209 .631 .427 2.66 .414 .034 1 20 PRE15B 1862 2005 144 6 0 .619 .37 1.21 .239 .666 .399 2.61 .352 .027 2 21 PRE16A 1903 2005 103 4 0 .785 .39 1.89 .354 .766 .533 2.53 .341 -.036 1 22 PRE16B 1903 2005 103 4 0 .656 .30 1.58 .228 .579 .450 2.67 .385 -.076 1 23 PRE17A 1893 2003 111 5 0 .758 .56 1.94 .398 .783 .353 2.63 .444 -.047 1 24 PRE17B 1893 2005 113 5 0 .692 .45 1.80 .401 .856 .371 2.56 .375 -.012 1 25 PRE18A 1872 2005 134 6 0 .816 .29 .88 .182 .686 .393 2.72 .401 -.031 1 26 PRE18B 1875 2005 131 5 0 .762 .45 1.17 .197 .537 .310 2.67 .390 .042 1 27 PRE19A 1870 2005 136 6 0 .729 .50 1.79 .295 .894 .209 2.67 .490 -.014 1 28 PRE19B 1864 1883 20 1 0 .721 .58 .99 .204 .495 .344 2.50 .597 -.053 2 29 PRE19BB 1890 2005 116 5 0 .711 .49 1.16 .192 .718 .223 2.63 .431 .012 1 30 PRE20A 1853 2005 153 6 0 .780 .31 1.18 .203 .630 .408 2.57 .439 .005 1 31 PRE20B 1864 2005 142 6 0 .754 .35 1.31 .192 .613 .385 2.64 .339 -.006 1 32 PRE21A 1900 2005 106 4 1 .618 .42 1.18 .248 .843 .214 2.58 .390 -.040 1 33 PRE21B 1900 2005 106 4 0 .490 .42 1.25 .267 .876 .207 2.76 .428 -.053 1 34 PRE22A 1912 1999 88 3 0 .682 .32 .70 .119 .596 .259 2.61 .471 -.054 1 35 PRE22B 1912 2005 94 4 0 .717 .31 .75 .129 .676 .281 2.50 .509 -.036 1 36 PRE23A 1874 2005 132 6 0 .712 .27 .99 .153 .618 .362 2.58 .428 -.014 1 37 PRE23B 1875 2005 131 5 0 .662 .38 .83 .173 .651 .294 2.61 .351 .008 2 38 PRE24A 1896 2005 110 5 0 .761 .38 .88 .177 .696 .281 2.59 .496 -.050 1 39 PRE24B 1890 2005 116 5 0 .788 .47 1.16 .222 .570 .302 2.95 .547 -.050 1 40 PRE25A 1874 2005 132 6 0 .686 .48 1.10 .197 .655 .269 2.60 .433 .039 1 41 PRE25B 1872 2005 134 6 0 .686 .45 1.14 .203 .738 .268 2.63 .463 -.049 1 42 PRE26A 1901 2005 105 4 0 .525 .41 1.00 .148 .510 .283 2.58 .428 -.025 1 43 PRE26B 1902 2000 99 4 0 .571 .61 1.12 .213 .530 .275 2.49 .340 -.039 1 44 PRE27A 1863 2005 143 6 0 .692 .46 2.20 .399 .833 .439 2.60 .389 -.027 1 45 PRE27B 1863 2005 143 6 0 .654 .37 1.38 .311 .697 .471 2.65 .500 .021 1 46 PRE28A 1933 2005 73 3 0 .677 .54 1.11 .178 .230 .327 2.69 .523 -.014 1 47 PRE28B 1927 2005 79 3 0 .779 .59 1.48 .219 .471 .311 2.75 .545 -.053 1 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 5652 236 2 .708 .40 2.20 .219 .626 .365 2.95 .442 -.013