Rabbit Run, Alaska - ak105 Additional Site Information Gordon Jacoby, Nicole Davi, and Greg Wiles Notes: Project Title "Synthesis of Three Decades of Research on Tree Growth in Northern Forests in relation to Global Climatic Change" COFECHA output: Chronology file name : AK105.CRN Measurement file name : AK105.RWL Date checked : 09SEP11 Checked by : B. Bauer Beginning year : 1533 Ending year : 1999 Principal investigators: Gordon Jacoby Nicole Davi Greg Wiles Site name : Rabbit Run Site location : Alaska Species information : PCGL WHITE SPRUCE Latitude : 6137 Longitude : -14122 Elevation : 1000M Series intercorrelation: 0.535 Avg mean sensitivity : 0.180 Avg standard deviation : 0.212 Avg autocorrelation : 0.829 Number dated series : 19 Segment length tested : 50 Number problem segments: 17 Pct problem segments : 7.52 PART 5: CORRELATION OF SERIES BY SEGMENTS: Rabbit Run 11:54 Fri 09 Sep 2011 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 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 RRXCBN 1680 1910 .28B .50 .57 .56 .59 .66 .73 .74 .70 2 RRX01 1590 1891 .42 .38 .55 .62 .50 .41 .39 .52 .56 .43 .29B .35B 3 RRX02 1533 1783 .43 .41 .50 .50 .41 .52 .55 .50 4 RRX03 1594 1918 .48 .42 .27A .37 .52 .53 .54 .63 .68 .55 .32A .22B .26A 5 RRX07 1653 1883 .38 .32A .49 .40 .21B .22B .50 .47 .43 6 RR01AN 1664 1911 .76 .73 .75 .75 .72 .62 .57 .65 .63 .66 7 RR01BN 1664 1905 .66 .60 .64 .76 .76 .55 .44 .59 .68 .65 8 RR02AE 1655 1911 .65 .69 .73 .61 .52 .53 .61 .70 .74 .71 9 RR02BE 1655 1854 .63 .66 .50 .53 .59 .38 .45 .47 10 RR09E 1600 1998 .47 .66 .56 .40 .45 .55 .67 .59 .66 .64 .58 .66 .60 .42 .51 11 RR09W 1589 1999 .53 .53 .58 .61 .58 .63 .66 .60 .55 .59 .35 .35 .76 .69 .35 .07B 12 RR32SE 1595 1998 .51 .59 .64 .64 .68 .66 .55 .56 .57 .52 .59 .75 .66 .45 .35 .59 13 RR32NW 1595 1998 .59 .70 .73 .72 .71 .74 .68 .68 .72 .46 .39 .53 .67 .70 .52 .56 14 RR32NW' 1600 1998 .71 .65 .64 .70 .74 .63 .66 .70 .41 .18B .07B .51 .68 .54 .49 15 RR32SE' 1600 1998 .59 .66 .67 .64 .62 .43 .51 .53 .43 .52 .65 .69 .48 .31A .51 16 RR63E 1690 1998 .26A .38 .57 .70 .58 .44 .32B .47 .52 .48 .51 .62 17 RR63W 1690 1998 .30A .36 .59 .63 .59 .63 .58 .57 .66 .68 .44 .35 18 RR63S 1730 1998 .55 .61 .46 .50 .47 .45 .47 .51 .47 .38 19 RR63N 1730 1998 .59 .69 .59 .50 .49 .48 .62 .62 .52 .45 Av segment correlation .49 .53 .58 .60 .53 .57 .57 .60 .56 .52 .49 .51 .61 .59 .44 .45 PART 7: DESCRIPTIVE STATISTICS: Rabbit Run 11:54 Fri 09 Sep 2011 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 RRXCBN 1680 1910 231 9 1 .562 .38 1.31 .156 .809 .180 2.75 .521 -.035 1 2 RRX01 1590 1891 302 12 2 .455 .13 .47 .061 .771 .246 2.72 .427 -.023 3 3 RRX02 1533 1783 251 8 0 .483 .15 .78 .102 .884 .198 2.55 .291 -.021 1 4 RRX03 1594 1918 325 13 4 .440 .20 .72 .142 .929 .204 2.58 .319 -.014 1 5 RRX07 1653 1883 231 9 3 .366 .20 .64 .088 .811 .191 2.81 .398 .062 1 6 RR01AN 1664 1911 248 10 0 .687 .42 1.31 .257 .890 .196 2.74 .452 -.024 1 7 RR01BN 1664 1905 242 10 0 .528 4.02 12.07 2.321 .883 .194 2.48 .252 -.011 1 8 RR02AE 1655 1911 257 10 0 .644 .42 .96 .150 .797 .186 2.70 .436 -.003 1 9 RR02BE 1655 1854 200 8 0 .538 .40 1.02 .184 .871 .184 2.69 .468 -.025 1 10 RR09E 1600 1998 399 15 0 .553 .18 .55 .076 .814 .203 2.79 .446 -.011 1 11 RR09W 1589 1999 411 16 1 .512 .17 .56 .076 .755 .242 2.96 .384 -.024 1 12 RR32SE 1595 1998 404 16 0 .571 .33 .89 .132 .868 .153 2.64 .359 -.053 1 13 RR32NW 1595 1998 404 16 0 .615 .32 .85 .119 .861 .146 2.85 .374 -.038 1 14 RR32NW' 1600 1998 399 15 2 .565 .33 .88 .112 .828 .150 3.01 .364 -.016 1 15 RR32SE' 1600 1998 399 15 1 .547 .30 .70 .116 .874 .148 2.77 .468 -.042 1 16 RR63E 1690 1998 309 12 2 .495 .41 1.06 .137 .792 .159 2.71 .331 .005 2 17 RR63W 1690 1998 309 12 1 .534 .34 .89 .112 .718 .165 2.91 .413 .030 2 18 RR63S 1730 1998 269 10 0 .465 .31 .60 .083 .743 .147 2.77 .454 -.010 1 19 RR63N 1730 1998 269 10 0 .554 .37 .80 .145 .871 .151 2.66 .355 -.009 2 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 5859 226 17 .535 .45 12.07 .212 .829 .180 3.01 .394 -.016