Nazina Treeline, Alaska, USA - AK073 Additional Site Information Gordon Jacoby, Nicole Davi, and Greg Wiles Purpose of Collection: Climate analysis Measurement type: Total ring width Location of core material: Tree-Ring Laboratory Lamont-Doherty Earth Observatory Palisades, New York 10964 Reference: Davi, N.K, Jacoby, G.C., Wiles, G.C., 2003. Boreal temperature variability inferred from maximum latewood density and tree-ring width data, Wrangell Mountain region, Alaska. Quaternary Research, Vol. 60, pp. 252-262. COFECHA output: Chronology file name : AK073.CRN Measurement file name : AK073.RWL Date checked : 11APR06 Checked by : B. Bauer Beginning year : 1546 Ending year : 1997 Principal investigators: Gordon Jacoby Nicole Davi Greg Wiles Site name : Nazina Treeline Site location : Alaska Species information : PCGL WHITE SPRUCE Latitude : +6122 Longitude : -14241 Elevation : 995M Series intercorrelation: 0.544 Avg mean sensitivity : 0.194 Avg standard deviation : 0.204 Avg autocorrelation : 0.836 Number dated series : 18 Segment length tested : 50 Number problem segments: 7 Pct problem segments : 5.83 PART 5: CORRELATION OF SERIES BY SEGMENTS: Nazina Treeline 17:09 Tue 11 Apr 2006 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 1550 1575 1600 1625 1650 1675 1700 1725 1750 1775 1800 1825 1850 1875 1900 1925 1950 1599 1624 1649 1674 1699 1724 1749 1774 1799 1824 1849 1874 1899 1924 1949 1974 1999 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 NT01N.SE 1910 1997 .39B .61 .69 2 NT01SE.S 1900 1997 .45 .61 .62 3 NT02ADEA 1546 1806 .68 .79 .85 .89 .86 .70 .71 .67 .54 .35 4 NT02BDEA 1551 1798 .68 .79 .85 .89 .85 .72 .67 .59 .53 5 NT3NW 1781 1947 .44 .50 .67 .59 .50 .42 6 NT4NE 1830 1997 .41 .36 .47 .79 .77 .63 7 NT4SW 1830 1997 .37 .42 .26B .55 .69 .60 8 NT05NW 1738 1925 .21B .31A .56 .47 .48 .61 .61 .60 9 NT05N.SE 1693 1920 .54 .65 .54 .43 .51 .43 .51 .70 .70 10 NT06N 1840 1997 .49 .52 .54 .57 .48 .39 11 NT06S 1840 1997 .50 .54 .51 .61 .49 .34 12 NT07E 1790 1997 .28B .40 .54 .60 .60 .49 .59 .67 13 NT07E.SE 1755 1992 .27B .37 .59 .52 .50 .60 .59 .65 .56 14 NT07W.SE 1830 1997 .52 .43 .47 .39 .51 .54 15 NT08N.SE 1800 1997 .69 .72 .76 .70 .41 .53 .64 16 NT08S.SE 1800 1997 .72 .62 .32B .49 .70 .59 .48 17 NTASTUB 1840 1997 .46 .40 .51 .53 .52 .39 18 NTCSTUB 1870 1997 .59 .61 .61 .65 .61 Av segment correlation .68 .79 .85 .89 .85 .65 .68 .50 .42 .42 .54 .52 .52 .54 .54 .59 .55 PART 7: DESCRIPTIVE STATISTICS: Nazina Treeline 17:09 Tue 11 Apr 2006 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 NT01N.SE 1910 1997 88 3 1 .497 .35 .68 .103 .620 .204 2.52 .499 -.047 1 2 NT01SE.S 1900 1997 98 3 0 .525 .35 .89 .144 .689 .252 2.72 .449 .060 1 3 NT02ADEA 1546 1806 261 10 0 .693 .36 1.39 .224 .931 .185 2.55 .366 -.044 1 4 NT02BDEA 1551 1798 248 9 0 .719 .42 1.09 .200 .848 .190 2.65 .358 -.004 1 5 NT3NW 1781 1947 167 6 0 .501 .88 1.51 .246 .757 .154 2.65 .404 .019 1 6 NT4NE 1830 1997 168 6 0 .551 .80 2.09 .366 .859 .194 2.85 .534 .061 1 7 NT4SW 1830 1997 168 6 1 .436 .68 1.43 .240 .829 .166 2.70 .513 .025 1 8 NT05NW 1738 1925 188 8 2 .428 .29 .64 .116 .841 .169 2.77 .428 -.032 1 9 NT05N.SE 1693 1920 228 9 0 .546 .28 .77 .148 .899 .182 2.74 .433 -.003 2 10 NT06N 1840 1997 158 6 0 .495 .41 1.51 .270 .760 .256 2.86 .391 .014 1 11 NT06S 1840 1997 158 6 0 .501 .44 1.52 .313 .828 .253 2.80 .403 -.077 1 12 NT07E 1790 1997 208 8 1 .508 .33 .89 .168 .920 .153 2.66 .373 -.046 1 13 NT07E.SE 1755 1992 238 9 1 .484 .31 1.31 .212 .931 .152 2.75 .419 .000 1 14 NT07W.SE 1830 1997 168 6 0 .481 .30 1.07 .127 .809 .178 2.94 .497 .005 1 15 NT08N.SE 1800 1997 198 7 0 .617 .27 1.16 .186 .852 .257 2.66 .426 -.034 1 16 NT08S.SE 1800 1997 198 7 1 .568 .34 .76 .148 .794 .211 2.69 .475 -.057 1 17 NTASTUB 1840 1997 158 6 0 .467 .34 1.39 .277 .864 .228 2.49 .450 -.012 1 18 NTCSTUB 1870 1997 128 5 0 .614 .50 1.18 .150 .678 .168 2.66 .460 .003 1 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 3226 120 7 .544 .42 2.09 .204 .836 .194 2.94 .431 -.012