Larch Valley, Alberta, Canada - CANA441
Additional information
Brian Luckman Margaret Colenutt Scott St.George
Cores are stored at:
University of Western Ontario
Detrending:
-ve exponential or linear with -ve or 0 slope
References:
St.George, R. S. and Luckman, B.H. 2001.
Extracting a paleotemperature record from Picea engelmannii
treeline sites in the central Canadian Rockies.
Canadian Journal of Forest Research, 31, 457-470.
Colenutt, M.E., Luckman, B.H. 1991.
Dendrochronological investigation of Larix lyallii at Larch Valley, Alberta.
Canadian Journal of Forest Research. 21:1222-1233.
COFECHA output:
Chronology file name : CANA441.CRN
Measurement file name : CANA441.RWL
Date checked : 08MAY14
Checked by : B. Bauer
Beginning year : 1567
Ending year : 1986
Principal investigators: Brian Luckman Margaret Colenutt Scott St.George
Site name : Larch Valley
Site location : Canada
Species information : PCEN ENGELMANN SPRUCE
Latitude : 5121
Longitude : -11613
Elevation : 2200M
Series intercorrelation: 0.673
Avg mean sensitivity : 0.204
Avg standard deviation : 0.315
Avg autocorrelation : 0.768
Number dated series : 20
Segment length tested : 50
Number problem segments: 2
Pct problem segments : 1.06
PART 5: CORRELATION OF SERIES BY SEGMENTS: Larch Valley 14:23 Thu 08 May 2014 Page 5
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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 1575 1600 1625 1650 1675 1700 1725 1750 1775 1800 1825 1850 1875 1900 1925 1950
1624 1649 1674 1699 1724 1749 1774 1799 1824 1849 1874 1899 1924 1949 1974 1999
--- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ----
1 LS702S 1779 1986 .55 .68 .69 .69 .78 .83 .82 .66
2 LS702W 1802 1986 .69 .66 .62 .68 .78 .77 .76
3 LS722N 1910 1986 .56 .70 .70
4 LS722W 1900 1986 .60 .71 .72
5 LS735E 1800 1986 .50 .74 .55 .41 .63 .82 .77
6 LS735N 1777 1986 .28A .55 .53 .40 .45 .70 .79 .76
7 LS740N 1575 1986 .80 .87 .72 .71 .72 .76 .66 .62 .59 .62 .77 .59 .69 .83 .83 .85
8 LS740W 1567 1977 .80 .87 .79 .69 .74 .77 .67 .72 .72 .72 .80 .64 .75 .81 .81 .83
9 LS741S 1661 1986 .19B .51 .78 .79 .74 .70 .69 .74 .72 .78 .79 .77 .73
10 LS741W 1715 1986 .70 .69 .72 .68 .76 .77 .40 .46 .78 .85 .80
11 LS742E 1729 1986 .56 .72 .69 .67 .78 .76 .69 .80 .87 .83
12 LS742W 1746 1986 .54 .60 .60 .64 .67 .72 .70 .83 .93 .87
13 LS743N 1796 1986 .60 .60 .70 .75 .80 .81 .71 .68
14 LS743S 1740 1986 .71 .72 .74 .60 .61 .68 .74 .82 .68 .66
15 LS744S 1806 1986 .70 .73 .71 .70 .74 .64 .62
16 LS744W 1800 1986 .70 .70 .65 .68 .71 .69 .69
17 LS750E 1698 1986 .87 .88 .86 .69 .67 .72 .78 .63 .74 .86 .84 .85
18 LS750N 1669 1986 .51 .54 .77 .83 .68 .66 .75 .79 .52 .57 .79 .83 .72
19 LS756N 1737 1986 .68 .60 .65 .59 .62 .47 .45 .43 .56 .66
20 LS756S 1737 1986 .49 .56 .60 .52 .56 .56 .58 .49 .60 .51
Av segment correlation .80 .87 .76 .52 .68 .78 .68 .67 .62 .65 .70 .61 .65 .73 .76 .73
PART 7: DESCRIPTIVE STATISTICS: Larch Valley 14:23 Thu 08 May 2014 Page 8
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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 LS702S 1779 1986 208 8 0 .675 .65 1.18 .163 .538 .195 2.65 .366 -.037 2
2 LS702W 1802 1986 185 7 0 .710 .65 1.26 .156 .553 .182 2.66 .479 .006 1
3 LS722N 1910 1986 77 3 0 .586 1.92 3.03 .467 .621 .174 2.68 .551 -.001 2
4 LS722W 1900 1986 87 3 0 .647 1.55 2.22 .327 .561 .146 2.84 .575 -.010 1
5 LS735E 1800 1986 187 7 0 .600 1.23 2.50 .438 .773 .202 2.60 .434 -.022 2
6 LS735N 1777 1986 210 8 1 .531 .99 3.00 .385 .690 .210 2.98 .435 -.024 1
7 LS740N 1575 1986 412 16 0 .707 .60 1.58 .329 .841 .266 2.77 .393 -.003 1
8 LS740W 1567 1977 411 16 0 .757 .49 1.42 .264 .824 .276 2.56 .340 .003 1
9 LS741S 1661 1986 326 13 1 .643 .75 1.90 .280 .754 .197 2.70 .385 .012 1
10 LS741W 1715 1986 272 11 0 .692 .89 2.04 .325 .788 .181 2.78 .430 -.003 1
11 LS742E 1729 1986 258 10 0 .713 .68 2.50 .423 .872 .244 2.48 .310 -.029 1
12 LS742W 1746 1986 241 10 0 .692 .59 2.06 .290 .753 .254 2.61 .331 -.040 1
13 LS743N 1796 1986 191 8 0 .702 1.00 2.00 .348 .825 .173 2.75 .384 -.006 1
14 LS743S 1740 1986 247 10 0 .701 .91 1.66 .288 .721 .198 2.58 .376 -.009 1
15 LS744S 1806 1986 181 7 0 .674 .98 1.66 .195 .453 .163 2.74 .505 .027 1
16 LS744W 1800 1986 187 7 0 .689 .77 1.36 .190 .604 .172 2.65 .419 .034 1
17 LS750E 1698 1986 289 12 0 .774 1.04 2.30 .466 .900 .152 2.43 .264 -.012 2
18 LS750N 1669 1986 318 13 0 .677 1.02 2.20 .413 .879 .164 2.56 .281 .003 1
19 LS756N 1737 1986 250 10 0 .584 .53 1.45 .287 .897 .198 2.67 .415 .003 1
20 LS756S 1737 1986 250 10 0 .532 .45 1.50 .272 .924 .184 2.48 .305 -.038 1
--- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- --
Total or mean: 4787 189 2 .673 .80 3.03 .315 .768 .204 2.98 .379 -.007