Firth River, Alaska, USA - AK047 Additional Site Information Martin Wilmking Purpose of Collection: Ecology, Treeline response Measurement type: Total ring width Location of core material: Tree ring lab, University of Alaska Fairbanks, USA References: Wilmking M., Juday G.P., Barber V.A. and Zald H.S.J. 2004. Recent climate warming forces opposite growth responses of white spruce at treeline in Alaska through temperature thresholds. Global Change Biology 10(10): 1724-1736. Wilmking M., Juday G.P. 2005. Longitudinal variation of radial growth at Alaska's northern treeline - Recent changes and possible scenarios for the 21st century. Global and Planetary Change. (in press, online early) doi:10.1016/j.gloplacha.2004.10.017. COFECHA File_name Date Time_span Series Spline Seg Lag N_Seg Probs Prob% XCorr MnSens C/Var MnMsmt MnStDv MnACorr ak047.rwl 25May06 1676 2002 16 32 50 25 145 39 26.90 .463 .228 40.88 .544 .253 .755 Run FIRTH Title: Firth River PART 5: CORRELATION OF SERIES BY SEGMENTS: Firth River 10:43 Thu 25 May 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 1675 1700 1725 1750 1775 1800 1825 1850 1875 1900 1925 1950 1975 1724 1749 1774 1799 1824 1849 1874 1899 1924 1949 1974 1999 2024 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 BRFR67 1813 2002 .26B .39 .71 .73 .68 .67 .70 .68 2 BRFR58 1820 2002 .49 .45 .44 .54 .39 .40 .63 .62 3 BRFR86B 1772 2002 .54 .57 .69 .71 .70 .72 .64 .60 .63 .60 4 BRFR92 1803 2002 .42 .61 .81 .77 .63 .54 .72 .74 5 BRFR38A 1802 2002 -.10B .21B .57 .61 .67 .56 .59 .62 6 BRFR49 1793 2002 -.09B-.17B-.23B .20B .06B-.02B .01B .32A .46 7 BRFR64 1821 2002 .66 .63 .70 .65 .62 .47 .41 .42 8 BRFR36 1811 2002 .33A .34 .38 .51 .58 .65 .72 .71 9 BRFR84 1810 2002 .50 .74 .70 .69 .59 .48 .63 .57 10 BRFR90 1774 2002 .45 .47 .43 .38 .56 .66 .61 .64 .76 .80 11 BRFR91 1817 2002 .41 .46 .29A .24B .25B .19B .58 .59 12 BRFR22 1676 2002 .07B .08B .12B .15B .27A .41 .45 .54 .65 .63 .60 .64 .66 13 BRFR89 1780 2002 .23B .32B .40B .56 .76 .72 .60 .63 .65 14 BRFR88 1699 2002 .07B .08B .12B .00B-.02B-.09B-.12B .02B .01B .01B-.06B .08B .22B 15 BRFR24 1833 2002 .50 .53 .60 .56 .30A .46 .48 16 BRFR86A 1761 2002 .35B .49 .56 .62 .70 .69 .66 .69 .68 .67 Av segment correlation .07 .08 .12 .30 .27 .34 .41 .53 .56 .51 .46 .57 .59 PART 7: DESCRIPTIVE STATISTICS: Firth River 10:43 Thu 25 May 2006 Page 9 ----------------------------------------------------------------------------------------------------------------------------------- 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 BRFR67 1813 2002 190 8 1 .604 .66 1.85 .334 .695 .304 2.74 .513 .012 1 2 BRFR58 1820 2002 183 8 0 .485 .17 .95 .140 .849 .260 2.69 .408 -.002 1 3 BRFR86B 1772 2002 231 10 0 .635 .49 1.17 .180 .603 .234 2.95 .408 .020 1 4 BRFR92 1803 2002 200 8 0 .661 .53 1.19 .205 .705 .228 2.61 .392 -.004 1 5 BRFR38A 1802 2002 201 8 2 .448 .96 2.17 .489 .790 .255 2.65 .421 .044 1 6 BRFR49 1793 2002 210 9 8 .111 .37 1.14 .223 .851 .212 2.80 .445 .018 1 7 BRFR64 1821 2002 182 8 0 .572 .89 1.74 .367 .787 .230 2.66 .445 .018 1 8 BRFR36 1811 2002 192 8 1 .523 1.03 2.83 .591 .900 .199 2.79 .343 -.013 1 9 BRFR84 1810 2002 193 8 0 .596 .51 1.08 .180 .746 .180 2.74 .499 .032 3 10 BRFR90 1774 2002 229 10 0 .585 .40 1.09 .222 .861 .214 2.93 .466 -.003 1 11 BRFR91 1817 2002 186 8 4 .358 .61 1.25 .210 .816 .169 2.85 .480 -.043 1 12 BRFR22 1676 2002 327 13 5 .367 .43 1.52 .207 .790 .215 2.70 .359 .002 3 13 BRFR89 1780 2002 223 9 3 .547 .46 1.32 .243 .850 .209 2.72 .325 -.017 1 14 BRFR88 1699 2002 304 13 13 .034 .37 1.02 .186 .822 .234 2.81 .425 .006 2 15 BRFR24 1833 2002 170 7 1 .503 .59 1.59 .233 .553 .257 2.73 .350 -.005 1 16 BRFR86A 1761 2002 242 10 1 .610 .48 1.07 .157 .449 .258 2.76 .312 -.009 1 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 3463 145 39 .463 .54 2.83 .253 .755 .228 2.95 .409 .003