Cornwall Hills, British Columbia, Canada - CANA238 Additional Site Information Rob Wilson and Brian Luckman Purpose of Collection: Climatology - temperature analyses Measurement type: Total ring width Location of core material: Department of Geography, University of Western Ontario References: Wilson, R.J.S. and Luckman, B.H. 2002. Tree-ring reconstruction of maximum and minimum temperatures and the diurnal temperature range in British Columbia, Canada. Dendrochronologia, 20(3): 257-268. Wilson, R.J.S. and Luckman, B.H. 2003. Dendroclimatic Reconstruction of Maximum Summer Temperatures from Upper Tree-Line Sites in Interior British Columbia. The Holocene. 13(6): 853-863. Wilson, R., D'Arrigo. R., Buckley, B., Buntgen, U., Esper, J., Frank, D., Luckman, B., Payette, S. Vose, R. and Youngblut, D. In Press 2007. A matter of divergence - tracking recent warming at hemispheric scales using tree-ring data. Journal of Geophysical Research - Atmopsheres. VOL. 112, D17103, doi:10.1029/2006JD008318 Wilson, R.J.S, Rao, R., Rydval, M., Wood, C., Larsson, L.-A. and Luckman, B.H. 2014. Blue Intensity for Dendroclimatology: The BC Blues: A Case Study from British Columbia Canada. The Holocene. 24 (11): 1428-1438. NOTES: Aspect: W Slope Angle: 0-10 Estimated Species Composition: 95% ES, 5% LP ES = Engelmann spruce; SF = Sub-alpine fir; WP = Whitebark pine; AL = Alpine larch; C = Western red cedar; MH = Mountain hemlock; LP = Lodgepole pine Site Information: Open forest tree-line site. Dry, well drained site Data collection updated 2016-02-10 to add Blue Intensity data, file cana238b.rwl. The Blue Intensity data were measured almost exactly from the same samples as the MXD data, although BI may not have been measured from all the samples due to discolouration issues. See Wilson et al. 2014 and Rydval et al. 2014 for additional information. BI measurment method As spruce does not express an obvious visible colour difference between the heartwood and sapwood, no pre-treatment (i.e. resin extraction) of the samples was made and the mounted cores were simply sanded up to 1200 grit grade. Residual wood dust was removed using compressed air. The scanner was calibrated using the SilverFast Auto IT8 Calibration procedure to the IT8 Calibration Target (IT8.7/2) printed on Kodak Professional Endura paper. All samples were scanned to 2400 DPI with the scanner covered by a box to minimise bias from external ambient light. The digital image of each sample was then imported into CooRecorder and the ring-boundaries marked and visually crossdated. BI data were then generated using frame dimensions (160-5-50-15) derived from experimentation with Scots pine (Rydval et al., 2014). The archived BI data are RAW measurments and have not been inverted. Rydval, M, Larsson, LA, McGlynn, L, Gunnarson, BE, Loader, NJ, Young, GHF and Wilson, R. 2014. Blue intensity for dendroclimatology: Should we have the blues? Experiments from Scotland. Dendrochronologia. 32(3): 191-204. COFECHA output: Ringwidth Series Chronology file name : N/A Measurement file name : CANA238.RWL Date checked : 17JUL07 Checked by : B. Bauer Beginning year : 1554 Ending year : 1997 Principal investigators: Rob Wilson Brian Luckman Site name : Cornwall Hills Site location : Canada Species information : PCEN ENGELMANN SPRUCE Latitude : 5042 Longitude : -12127 Elevation : 1980M Series intercorrelation: 0.703 Avg mean sensitivity : 0.222 Avg standard deviation : 0.431 Avg autocorrelation : 0.744 Number dated series : 35 Segment length tested : 50 Number problem segments: 4 Pct problem segments : 1.32 PART 5: CORRELATION OF SERIES BY SEGMENTS: Cornwall Hills 10:22 Tue 17 Jul 2007 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 1675 1700 1725 1750 1775 1800 1825 1850 1875 1900 1925 1950 1724 1749 1774 1799 1824 1849 1874 1899 1924 1949 1974 1999 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 C9804NE 1885 1997 .73 .78 .89 .89 2 C9804SE 1855 1997 .77 .81 .88 .84 .83 3 C9804SE2 1864 1997 .63 .67 .82 .79 .84 4 C9805N 1689 1997 .44 .48 .62 .78 .74 .72 .77 .73 .66 .72 .74 .78 5 C9805SW 1707 1997 .67 .67 .69 .78 .77 .77 .62 .55 .68 .62 .63 6 C9807N 1763 1997 .80 .86 .88 .80 .74 .77 .79 .81 .75 7 C9807W 1778 1997 .75 .74 .75 .74 .72 .78 .88 .89 8 C9808W 1786 1997 .76 .69 .58 .68 .70 .74 .79 .78 9 C9811N 1839 1997 .59 .74 .78 .79 .77 .70 10 C9811W 1775 1997 .51 .64 .76 .73 .79 .78 .75 .77 11 C9813N 1756 1997 .42 .71 .74 .58 .58 .58 .60 .62 .74 12 C9813NE 1749 1997 .22B .24B .32B .45 .52 .62 .54 .62 .66 .78 13 C9814E 1769 1997 .58 .66 .86 .86 .73 .67 .76 .85 .73 14 C9814N 1789 1997 .90 .90 .74 .62 .71 .79 .85 .89 15 C9816S 1554 1894 .38 .33 .54 .61 .62 .65 .56 .53 16 C9817E 1695 1997 .43 .48 .79 .70 .73 .77 .75 .77 .70 .72 .82 .86 17 C9817S 1739 1997 .63 .76 .84 .85 .78 .76 .73 .75 .83 .86 18 C9818E 1710 1997 .53 .60 .62 .76 .80 .70 .67 .71 .78 .80 .82 19 C9818W 1743 1997 .68 .76 .70 .67 .75 .71 .73 .69 .71 .81 20 C9821N 1746 1997 .75 .76 .79 .73 .68 .71 .69 .68 .82 .87 21 C9821NE 1751 1997 .69 .81 .82 .77 .70 .65 .70 .74 .77 22 C9822NE 1745 1997 .56 .56 .51 .59 .62 .51 .47 .56 .76 .77 23 C9822NW 1756 1997 .57 .53 .56 .60 .35 .31A .58 .63 .59 24 C9825N 1760 1997 .60 .70 .70 .74 .69 .81 .87 .84 .82 25 C9825S 1797 1997 .65 .66 .62 .55 .71 .78 .78 .72 26 C9827N 1713 1997 .43 .66 .64 .73 .85 .82 .68 .70 .72 .81 .89 27 C9827W 1758 1997 .84 .90 .86 .79 .83 .81 .76 .80 .83 28 C9828 1783 1997 .56 .59 .61 .54 .59 .63 .74 .81 29 C9829S 1846 1997 .51 .53 .75 .81 .78 .75 30 C9830S 1800 1940 .73 .73 .75 .76 .75 31 C9830W 1807 1963 .68 .74 .71 .74 .78 .86 32 C9831SE 1704 1997 .51 .75 .74 .69 .78 .83 .61 .62 .64 .77 .75 33 C9831W 1697 1997 .58 .60 .84 .87 .78 .79 .81 .59 .50 .57 .67 .78 34 C9832E 1750 1997 .69 .58 .66 .76 .67 .68 .79 .77 .75 35 C9832W 1751 1997 .59 .70 .83 .83 .78 .80 .79 .67 .73 Av segment correlation .46 .50 .64 .66 .70 .73 .71 .66 .68 .73 .77 .79 PART 7: DESCRIPTIVE STATISTICS: Cornwall Hills 10:22 Tue 17 Jul 2007 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 C9804NE 1885 1997 113 4 0 .841 .65 1.11 .131 .287 .190 2.65 .518 -.033 1 2 C9804SE 1855 1997 143 5 0 .817 .79 1.96 .234 .582 .194 2.86 .420 -.017 1 3 C9804SE2 1864 1997 134 5 0 .763 .73 1.22 .164 .437 .190 2.56 .351 .009 1 4 C9805N 1689 1997 309 12 0 .682 1.27 3.46 .581 .764 .254 2.69 .402 -.040 1 5 C9805SW 1707 1997 291 11 0 .673 1.12 3.10 .508 .782 .225 2.67 .409 -.043 1 6 C9807N 1763 1997 235 9 0 .782 1.10 2.81 .547 .826 .222 2.53 .291 -.038 1 7 C9807W 1778 1997 220 8 0 .778 1.31 2.76 .413 .599 .225 2.63 .297 -.022 1 8 C9808W 1786 1997 212 8 0 .721 .92 2.78 .497 .879 .231 2.55 .386 -.009 1 9 C9811N 1839 1997 159 6 0 .695 1.34 2.65 .386 .653 .193 2.56 .374 .007 2 10 C9811W 1775 1997 223 8 0 .686 1.16 2.22 .286 .509 .185 2.62 .348 -.011 2 11 C9813N 1756 1997 242 9 0 .608 1.10 3.46 .691 .925 .188 2.65 .319 -.007 1 12 C9813NE 1749 1997 249 10 3 .528 1.10 14.93 1.123 .381 .237 3.08 .368 -.023 1 13 C9814E 1769 1997 229 9 0 .733 1.31 3.23 .558 .787 .218 2.67 .379 -.048 1 14 C9814N 1789 1997 209 8 0 .813 1.29 3.00 .406 .666 .207 2.60 .381 -.022 1 15 C9816S 1554 1894 341 8 0 .518 .68 1.72 .337 .844 .196 2.71 .376 .000 1 16 C9817E 1695 1997 303 12 0 .715 .70 1.71 .372 .817 .269 2.60 .339 -.001 1 17 C9817S 1739 1997 259 10 0 .775 .65 2.02 .412 .851 .286 2.65 .395 -.001 1 18 C9818E 1710 1997 288 11 0 .702 .77 1.67 .333 .754 .238 2.74 .327 -.025 1 19 C9818W 1743 1997 255 10 0 .706 .75 3.18 .365 .770 .225 2.80 .351 .008 1 20 C9821N 1746 1997 252 10 0 .753 1.20 3.53 .621 .854 .217 2.87 .468 -.031 1 21 C9821NE 1751 1997 247 9 0 .744 1.23 4.39 .764 .873 .235 2.67 .375 -.042 1 22 C9822NE 1745 1997 253 10 0 .609 .77 1.73 .292 .742 .217 2.59 .398 -.002 1 23 C9822NW 1756 1997 242 9 1 .529 .69 1.90 .352 .827 .231 2.50 .347 -.011 4 24 C9825N 1760 1997 238 9 0 .759 1.09 2.78 .432 .729 .214 2.73 .436 -.042 1 25 C9825S 1797 1997 201 8 0 .676 1.29 3.66 .458 .665 .212 2.74 .453 -.027 1 26 C9827N 1713 1997 285 11 0 .709 .96 2.17 .360 .768 .193 2.63 .409 -.063 1 27 C9827W 1758 1997 240 9 0 .821 1.23 2.75 .482 .798 .186 2.68 .350 -.037 1 28 C9828 1783 1997 215 8 0 .636 .90 1.82 .326 .825 .159 2.49 .315 -.015 1 29 C9829S 1846 1997 152 6 0 .706 1.43 2.70 .370 .673 .171 2.62 .401 .000 1 30 C9830S 1800 1940 141 5 0 .734 .59 1.28 .197 .480 .257 2.86 .447 .000 1 31 C9830W 1807 1963 157 6 0 .726 .49 1.01 .160 .526 .254 2.60 .416 -.060 1 32 C9831SE 1704 1997 294 11 0 .685 .73 1.71 .386 .862 .242 2.60 .378 -.092 1 33 C9831W 1697 1997 301 12 0 .705 .68 1.94 .411 .904 .240 2.69 .356 -.021 1 34 C9832E 1750 1997 248 9 0 .699 .69 1.92 .282 .704 .254 2.54 .416 -.049 1 35 C9832W 1751 1997 247 9 0 .749 .55 1.43 .276 .823 .234 2.67 .383 -.042 1 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 8127 304 4 .703 .95 14.93 .431 .744 .222 3.08 .379 -.026 Maximum Density Series: Chronology file name : CANA238X.CRN Measurement file name : CANA238X.RWL Date checked : 17JUL07 Checked by : B. Bauer Beginning year : 1689 Ending year : 1997 Principal investigators: Rob Wilson Brian Luckman Site name : Cornwall Hills Site location : Canada Species information : PCEN ENGELMANN SPRUCE Latitude : 5042 Longitude : -12127 Elevation : 1980M Series intercorrelation: 0.766 Avg mean sensitivity : 0.114 Avg standard deviation : 0.117 Avg autocorrelation : 0.394 Number dated series : 24 Segment length tested : 50 Number problem segments: 0 Pct problem segments : 0.00 PART 5: CORRELATION OF SERIES BY SEGMENTS: Cornwall Hills 10:21 Tue 17 Jul 2007 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 1675 1700 1725 1750 1775 1800 1825 1850 1875 1900 1925 1950 1724 1749 1774 1799 1824 1849 1874 1899 1924 1949 1974 1999 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 C9804NE 1885 1997 .72 .68 .75 .80 2 C9804SE2 1864 1997 .65 .67 .70 .68 .84 3 C9805N 1689 1997 .77 .78 .85 .84 .88 .83 .68 .76 .69 .34 .51 .66 4 C9805SW 1707 1997 .79 .75 .74 .87 .81 .71 .77 .69 .37 .51 .70 5 C9808W 1786 1997 .80 .78 .67 .67 .64 .62 .73 .78 6 C9811W 1775 1997 .77 .82 .77 .86 .74 .34 .63 .84 7 C9813N 1756 1997 .64 .70 .84 .75 .80 .80 .46 .55 .73 8 C9814E 1769 1997 .81 .82 .84 .67 .80 .85 .75 .84 .81 9 C9814N 1789 1997 .85 .88 .85 .82 .87 .72 .81 .78 10 C9817S 1739 1997 .83 .86 .84 .74 .66 .76 .78 .74 .83 .86 11 C9817E 1695 1997 .82 .81 .82 .80 .85 .84 .82 .92 .92 .84 .90 .93 12 C9818E 1710 1997 .81 .78 .57 .64 .78 .81 .88 .88 .83 .72 .74 13 C9822NE 1745 1997 .87 .86 .73 .74 .84 .85 .80 .80 .87 .86 14 C9822NW 1756 1997 .81 .84 .83 .83 .91 .90 .71 .77 .84 15 C9825N 1760 1997 .53 .62 .75 .77 .88 .88 .85 .88 .89 16 C9825S 1797 1997 .88 .88 .61 .66 .78 .73 .83 .84 17 C9827N 1713 1997 .83 .84 .86 .91 .82 .78 .84 .74 .65 .80 .87 18 C9827W 1758 1997 .76 .76 .69 .77 .70 .71 .76 .84 .84 19 C9829S 1846 1997 .75 .70 .74 .75 .83 .85 20 C9830S 1800 1940 .66 .68 .89 .79 .59 21 C9830W 1807 1963 .81 .81 .85 .76 .63 .73 22 C9831SE 1704 1997 .80 .87 .82 .86 .87 .73 .68 .66 .63 .81 .83 23 C9831W 1697 1997 .74 .76 .85 .93 .90 .79 .56 .69 .70 .41 .53 .61 24 C9832W 1751 1997 .83 .86 .86 .77 .90 .87 .73 .82 .79 Av segment correlation .78 .80 .83 .78 .81 .80 .74 .79 .77 .65 .75 .80 PART 7: DESCRIPTIVE STATISTICS: Cornwall Hills 10:21 Tue 17 Jul 2007 Page 7 ----------------------------------------------------------------------------------------------------------------------------------- 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 C9804NE 1885 1997 113 4 0 .736 1.32 1.62 .134 .642 .069 2.53 .477 .058 1 2 C9804SE2 1864 1997 134 5 0 .714 .75 .94 .090 -.057 .142 2.41 .397 -.041 1 3 C9805N 1689 1997 309 12 0 .719 .72 1.03 .098 .502 .107 2.41 .290 -.007 1 4 C9805SW 1707 1997 291 11 0 .720 1.17 1.54 .141 .757 .066 2.48 .310 -.014 1 5 C9808W 1786 1997 212 8 0 .705 .90 1.21 .110 .496 .093 2.52 .338 -.020 1 6 C9811W 1775 1997 223 8 0 .736 .67 .93 .106 .217 .157 2.64 .355 -.009 1 7 C9813N 1756 1997 242 9 0 .697 .57 .87 .077 .186 .135 2.69 .366 -.029 1 8 C9814E 1769 1997 229 9 0 .792 .79 1.03 .130 .219 .171 2.40 .383 .012 2 9 C9814N 1789 1997 209 8 0 .808 .88 1.13 .117 .527 .101 2.38 .301 -.005 1 10 C9817S 1739 1997 259 10 0 .781 .87 1.11 .095 .006 .120 2.45 .352 .002 1 11 C9817E 1695 1997 303 12 0 .853 .78 1.07 .109 .224 .136 2.46 .415 -.018 1 12 C9818E 1710 1997 288 11 0 .756 1.00 1.26 .119 .309 .117 2.46 .361 -.029 6 13 C9822NE 1745 1997 253 10 0 .816 .98 1.25 .102 .304 .096 2.45 .333 -.024 1 14 C9822NW 1756 1997 242 9 0 .820 .67 .95 .095 .247 .142 2.55 .467 .011 1 15 C9825N 1760 1997 238 9 0 .767 .79 1.07 .119 .607 .109 2.49 .424 -.029 3 16 C9825S 1797 1997 201 8 0 .769 .82 1.16 .114 .587 .103 2.58 .416 .007 1 17 C9827N 1713 1997 285 11 0 .807 1.02 1.62 .148 .678 .088 2.52 .385 -.012 1 18 C9827W 1758 1997 240 9 0 .770 1.13 1.67 .249 .879 .089 2.48 .415 -.032 1 19 C9829S 1846 1997 152 6 0 .755 1.01 1.26 .098 .445 .084 2.44 .375 -.035 1 20 C9830S 1800 1940 141 5 0 .704 .68 .97 .096 .132 .146 2.59 .472 .046 2 21 C9830W 1807 1963 157 6 0 .794 .65 .86 .089 .384 .122 2.58 .375 -.004 1 22 C9831SE 1704 1997 294 11 0 .764 .91 1.19 .122 .399 .119 2.35 .262 -.008 1 23 C9831W 1697 1997 301 12 0 .720 .98 1.21 .094 .268 .090 2.59 .351 -.011 1 24 C9832W 1751 1997 247 9 0 .822 .80 1.17 .131 .355 .142 2.36 .298 .003 1 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 5563 212 0 .766 .87 1.67 .117 .394 .114 2.69 .365 -.010