Nenana Bluff, Alaska - ak124 Additional Site Information Andrea Lloyd, Daniel Mann, and Paul Duffy Purpose of Collection: Ecology - collected to study tree growth response to climate Detrending: Horizontal line Cores Stored at: Middlebury College, Middlebury, VT Reference: Lloyd, A. et al. In Review, Canadian Journal of Forest Research NOTES: Third letter (B, F, or U) of the site code represents the topographic position on these steep river bluffs: B=trees towards the base of the bluff, F=trees out on the face of the bluff, and U=trees on the upper bluff. COFECHA output: Chronology file name : AK124.CRN Measurement file name : AK124.RWL Date checked : 19SEP12 Checked by : B. Bauer Beginning year : 1827 Ending year : 2009 Principal investigators: Andrea Lloyd Daniel Mann Paul Duffy Site name : Nenana Bluff Site location : Alaska Species information : PCGL WHITE SPRUCE Latitude : 6410 Longitude : -14918 Elevation : 339M Series intercorrelation: 0.738 Avg mean sensitivity : 0.246 Avg standard deviation : 0.345 Avg autocorrelation : 0.593 Number dated series : 29 Segment length tested : 50 Number problem segments: 1 Pct problem segments : 0.73 PART 5: CORRELATION OF SERIES BY SEGMENTS: Nenana Bluff 12:02 Wed 19 Sep 2012 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 1825 1850 1875 1900 1925 1950 1975 1874 1899 1924 1949 1974 1999 2024 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 NBB001 1916 2009 .78 .88 .79 .68 2 NBB002 1882 2009 .80 .83 .88 .83 .76 3 NBB003 1889 2009 .90 .89 .86 .83 .58 4 NBB004 1841 2009 .44 .40 .67 .82 .89 .86 .75 5 NBB005 1905 2009 .54 .58 .71 .76 6 NBB006 1827 2009 .56 .49 .81 .81 .76 .81 .67 7 NBB007 1892 2009 .87 .85 .81 .86 .80 8 NBB008 1879 2009 .81 .88 .83 .84 .76 9 NBB009 1944 2009 .65 .67 .68 10 NBB010 1900 2009 .84 .89 .89 .80 11 NB2A 1896 2008 .86 .85 .86 .84 .85 12 NB2B 1888 2008 .67 .77 .77 .79 .84 13 NB2C 1896 2008 .83 .83 .81 .84 .86 14 NB2E 1889 2008 .78 .79 .85 .85 .77 15 NB2F 1903 2008 .71 .82 .84 .79 16 NB2G 1904 2008 .82 .90 .82 .71 17 NB2I 1879 2008 .67 .78 .72 .75 .77 18 NB2J 1903 2008 .70 .78 .78 .69 19 NB1B 1909 2008 .88 .85 .87 .89 20 NB1F 1891 2008 .72 .82 .87 .91 .88 21 NBU002 1892 2009 .41 .50 .62 .53 .41 22 NBU003 1888 2009 .62 .69 .67 .68 .61 23 NBU004 1866 2009 .33A .65 .73 .77 .81 .71 24 NBU005 1880 2009 .61 .67 .75 .90 .83 25 NBU006 1882 2009 .76 .83 .62 .72 .79 26 NBU007 1907 2009 .67 .68 .84 .72 27 NBU008 1879 2009 .71 .78 .68 .71 .70 28 NBU009 1933 2009 .82 .80 .69 29 NBU010 1917 2009 .45 .40 .72 .61 Av segment correlation .50 .41 .73 .76 .77 .80 .74 PART 7: DESCRIPTIVE STATISTICS: Nenana Bluff 12:02 Wed 19 Sep 2012 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 NBB001 1916 2009 94 4 0 .734 .99 1.67 .280 .460 .240 2.56 .427 .001 1 2 NBB002 1882 2009 128 5 0 .808 .99 1.67 .240 .440 .211 2.48 .333 .028 3 3 NBB003 1889 2009 121 5 0 .778 .98 1.93 .357 .679 .242 2.73 .487 -.048 1 4 NBB004 1841 2009 169 7 0 .729 .98 1.58 .289 .547 .238 2.41 .329 .003 1 5 NBB005 1905 2009 105 4 0 .645 .98 2.12 .447 .809 .236 2.74 .452 -.035 1 6 NBB006 1827 2009 183 7 0 .700 .98 1.92 .352 .587 .260 2.74 .517 .016 1 7 NBB007 1892 2009 118 5 0 .820 .97 1.81 .376 .691 .250 2.54 .375 -.077 1 8 NBB008 1879 2009 131 5 0 .825 .99 1.63 .249 .510 .205 2.43 .420 -.029 1 9 NBB009 1944 2009 66 3 0 .653 1.00 1.81 .316 .701 .191 2.48 .460 .009 1 10 NBB010 1900 2009 110 4 0 .845 .99 1.84 .341 .476 .308 2.75 .485 -.033 1 11 NB2A 1896 2008 113 5 0 .841 1.00 1.87 .330 .242 .358 2.39 .366 -.045 1 12 NB2B 1888 2008 121 5 0 .750 .99 2.26 .382 .312 .375 2.39 .342 -.045 1 13 NB2C 1896 2008 113 5 0 .843 1.00 1.81 .315 .335 .317 2.49 .435 -.026 1 14 NB2E 1889 2008 120 5 0 .806 1.11 6.50 .722 .761 .299 2.52 .422 -.028 1 15 NB2F 1903 2008 106 4 0 .771 .98 1.82 .358 .531 .317 2.52 .419 -.025 1 16 NB2G 1904 2008 105 4 0 .795 1.00 2.00 .318 .548 .244 2.58 .533 -.061 1 17 NB2I 1879 2008 130 5 0 .736 1.00 1.71 .256 .316 .243 2.56 .447 -.033 1 18 NB2J 1903 2008 106 4 0 .716 1.00 2.12 .322 .684 .201 2.49 .420 -.049 1 19 NB1B 1909 2008 100 4 0 .877 .99 1.87 .329 .452 .311 2.60 .409 -.055 1 20 NB1F 1891 2008 118 5 0 .834 .98 1.89 .294 .585 .236 2.46 .423 -.014 1 21 NBU002 1892 2009 118 5 0 .455 1.00 1.98 .351 .785 .182 2.66 .439 .013 1 22 NBU003 1888 2009 122 5 0 .637 .97 1.76 .431 .877 .202 2.58 .408 -.003 1 23 NBU004 1866 2009 144 6 1 .669 .99 1.75 .331 .710 .203 2.65 .421 .004 1 24 NBU005 1880 2009 130 5 0 .724 .98 1.76 .333 .802 .184 2.49 .393 .009 1 25 NBU006 1882 2009 128 5 0 .718 .96 2.23 .407 .752 .229 2.50 .329 -.036 1 26 NBU007 1907 2009 103 4 0 .697 1.00 2.09 .374 .748 .206 2.73 .517 -.036 1 27 NBU008 1879 2009 131 5 0 .710 .99 1.86 .302 .661 .213 2.67 .432 -.042 1 28 NBU009 1933 2009 77 3 0 .755 1.00 1.67 .258 .492 .214 2.64 .542 -.075 1 29 NBU010 1917 2009 93 4 0 .522 .95 1.86 .346 .684 .233 2.75 .606 -.026 2 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 3403 137 1 .738 .99 6.50 .345 .593 .246 2.75 .430 -.023