Northern Alaska Composite - ak117 Additional Site Information Rosanne D'Arrigo Rob Wilson Gordon Jacoby Notes: Northern Alaska Composite, includes sites Four Twelve, Arrigetch, 12 Mile Summit. Project Title "Synthesis of Three Decades of Research on Tree Growth in Northern Forests in relation to Global Climatic Change" Reference: D'Arrigo, R., R. Wilson, and G. Jacoby. 2006. On the long-term context for late twentieth century warming. Journal of Geophysical Research, 111, D03103, doi:10.1029/2005JD006352. COFECHA output: Chronology file name : AK117X.CRN Measurement file name : AK117X.RWL Date checked : 25APR12 Checked by : B. Bauer Beginning year : 1524 Ending year : 1990 Principal investigators: Rosanne D'Arrigo Rob Wilson Gordon Jacoby Site name : Northern Alaska Composite Site location : Alaska Species information : PCGL WHITE SPRUCE Latitude : 6700 Longitude : -15200 Elevation : M Series intercorrelation: 0.610 Avg mean sensitivity : 0.068 Avg standard deviation : 4.811 Avg autocorrelation : 0.434 Number dated series : 73 Segment length tested : 50 Number problem segments: 41 Pct problem segments : 7.28 PART 5: CORRELATION OF SERIES BY SEGMENTS: Northern Alaska Composite 15:47 Wed 25 Apr 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 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 ARCWS 1629 1974 .53 .58 .50 .49B .56 .74 .74 .60 .69 .63 .54 .64 .55 2 AR1WS 1863 1962 .86 .84 .80 .80 3 AR4HIWS 1893 1986 .71 .63 .73 .67 4 AR5WS 1846 1990 .63 .81 .67 .50 .68 .69 5 AR6WS 1795 1990 .73 .71 .67 .78 .85 .69 .59 .59 6 AR6NWS 1760 1990 .83 .88 .67 .73 .88 .80 .69 .69 .71 7 AR7ES 1759 1990 .89 .84 .74 .82 .91 .79 .64 .59 .58 8 AR8ES 1778 1985 .54 .56 .64 .40 .38B .60 .48 .42 9 AR11NES 1771 1935 .42 .42 .14B .26A .74 .75 .78 10 AR11NEBS 1938 1990 .59 .57 11 AR13SWS 1786 1847 .82 .78 12 AR13SWBS 1849 1990 .80 .81 .76 .67 .69 .65 13 AR14NWS 1842 1975 .72 .85 .81 .69 .64 .64 14 AR15ES 1799 1990 .50 .50 .80 .86 .86 .78 .71 .70 15 AR16SWS 1840 1990 .69 .84 .84 .75 .74 .68 16 AR16NES 1693 1974 .56 .48 .75 .90 .90 .77 .73 .71 .68 .72 .68 17 AR18WS 1765 1988 .88 .87 .65 .67 .76 .69 .61 .67 .57 18 AR19ES 1586 1990 .01B .10B .03B-.06B-.17B-.26B .24B .74 .54 .17B .45 .53 .38 .07B .19A .21A 19 AR19WPS 1637 1990 .72 .62 .62 .63 .72 .80 .70 .50 .52 .49 .32B .28B .40 .35 20 AR21WS 1728 1990 .80 .87 .78 .60 .80 .87 .83 .72 .67 .66 21 AR22WS 1741 1782 .84 22 AR22WBS 1785 1884 .84 .84 .49 .37B 23 AR22WCS 1886 1990 .79 .75 .79 .78 24 AR23SWS 1744 1827 .88 .91 .88 .88 25 AR24NES 1739 1952 .86 .87 .92 .46 .32A .66 .70 .59 .57 26 AR143S 1680 1974 .65 .59 .78 .89 .87 .71 .61 .70 .62 .57 .57 27 AR151S 1730 1974 .68 .89 .90 .67 .61 .86 .86 .72 .60 28 AR152S 1728 1965 .67 .90 .93 .72 .71 .82 .75 .51 .51 29 FTR6NS 1930 1990 .67 .68 30 FTR8SS 1774 1990 .80 .80 .79 .57 .71 .65 .62 .77 .77 31 FTR8ES 1766 1990 .88 .87 .73 .52 .79 .75 .67 .74 .77 32 FTR10NS 1749 1990 .73 .74 .77 .61 .52 .70 .66 .60 .48 .21A 33 FTR11SS 1819 1990 .61 .60 .77 .78 .66 .37 .26B 34 FTR13NS 1860 1990 .66 .72 .78 .68 .56 35 FTR14WS 1851 1990 .65 .56 .65 .58 .36 36 FTR14ES 1848 1883 .59 37 FTR14EBS 1898 1990 .68 .66 .61 .52 38 FTR15WS 1782 1990 .60 .49 .51 .69 .67 .73 .48 .34 39 FTR17NS 1858 1990 .79 .81 .71 .46 .46 40 FTR19ES 1753 1990 .84 .89 .66 .42 .53 .60 .59 .48 .49 41 FTR25WAS 1769 1818 .82 42 FTR25WS 1842 1990 .34 .38 .36 .49 .60 .58 43 FTR30NWS 1802 1989 .60 .60 .80 .74 .74 .67 .63 44 FTR31SS 1860 1990 .85 .80 .70 .56 .61 45 FTR33SWS 1859 1990 .72 .73 .76 .75 .75 46 FTR36SS 1799 1990 .38 .40 .43 .47 .46 .71 .52 .52 47 FTR38ES 1764 1906 .79 .76 .75 .61 .66 .67 48 FTR38EBS 1914 1990 .69 .61 .60 49 FTR38WS 1759 1990 .86 .87 .69 .50 .56 .64 .70 .48 .44 50 FTR44WS 1722 1923 .47 .46 .44 .48 .46 .64 .73 .59 51 21012ES 1633 1976 .85 .77 .73 .79 .81 .75 .67 .43 .12B .35 .44 .63 .56 .57 52 021012WS 1635 1976 .72 .65 .66 .82 .78 .80 .77 .45 .10B .66 .70 .52 .54 .54 53 21022NES 1577 1903 .62 .68 .68 .80 .70 .71 .72 .84 .77 .38 .31A .39 .37 54 21022SWS 1560 1976 .43 .54 .62 .77 .72 .66 .42 .42 .78 .57 .10B .37 .76 .79 .77 .65 .66 55 02103SS 1569 1924 .79 .79 .61 .24A .36 .63 .59 .50 .74 .73 .35B .15B .20B .33A 56 21011NES 1611 1816 .86 .80 .75 .72 .69 .54 .62 .62 57 2103SWS 1524 1665 .74 .81 .75 .68 58 2103SWBS 1668 1852 .75 .72 .70 .81 .90 .85 .54 .55 59 21011SWS 1635 1736 .83 .69 .53 .52 60 02103NS 1595 1976 .81 .76 .62 .61 .54 .59 .76 .87 .87 .75 .63 .77 .71 .55 .44 .44 61 02102NES 1600 1819 .73 .74 .61 .56 .65 .69 .72 .71 62 02102SWS 1600 1662 .91 .90 63 TMW2SS 1830 1990 .47 .30B .16B .44 .55 .53 64 TMW8WS 1680 1812 .57 .47 .59 .70 .68 65 TMW9ES 1753 1990 .90 .81 .44 .43 .44 .38 .54 .58 .47 66 TMW9EPS 1691 1906 .65 .61 .71 .87 .75 .39 .41 .49 .54 67 TMW11NWS 1677 1990 .58 .38 .66 .89 .85 .64 .62 .66 .59 .67 .70 .64 68 TMW22NS 1690 1929 .67 .62 .67 .86 .75 .34 .48 .50 .59 .56 69 TMW22WPS 1617 1929 .10B .17B .28B .34B .40 .45 .66 .54 .17B .45 .40 .46 .47 70 TMW23ES 1780 1990 .70 .68 .63 .36 .36 .71 .61 .54 71 TMW26SS 1639 1961 .48 .59 .72 .59 .67 .86 .80 .58 .55 .21B .11B .13B .14B 72 TMW29SWS 1848 1990 .59 .60 .46 .51 .58 .48 73 TMW31NS 1755 1990 .81 .72 .54 .59 .64 .53 .56 .63 .46 Av segment correlation .65 .60 .61 .61 .58 .58 .54 .67 .80 .74 .56 .54 .64 .62 .62 .59 .55 PART 7: DESCRIPTIVE STATISTICS: Northern Alaska Composite 15:47 Wed 25 Apr 2012 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 ARCWS 1629 1974 346 13 1 .585 63.23 77.15 5.788 .611 .065 2.49 .383 -.029 1 2 AR1WS 1863 1962 100 4 0 .831 54.39 63.81 3.807 .060 .073 2.31 .367 -.062 1 3 AR4HIWS 1893 1986 94 4 0 .682 62.49 68.76 3.064 .291 .046 2.52 .416 .016 1 4 AR5WS 1846 1990 145 6 0 .666 53.83 61.83 3.697 .036 .076 2.39 .333 -.021 1 5 AR6WS 1795 1990 196 8 0 .706 68.97 82.92 9.300 .812 .065 2.40 .340 -.027 5 6 AR6NWS 1760 1990 231 9 0 .782 50.97 60.30 3.907 .329 .065 2.38 .243 -.049 1 7 AR7ES 1759 1990 232 9 0 .767 51.07 61.21 4.333 .359 .076 2.41 .316 -.012 1 8 AR8ES 1778 1985 208 8 1 .482 51.51 62.58 3.507 .356 .057 2.40 .328 .002 2 9 AR11NES 1771 1935 165 7 2 .507 55.71 66.27 3.745 .405 .058 2.41 .304 .023 1 10 AR11NEBS 1938 1990 53 2 0 .575 55.78 62.56 2.933 .221 .051 2.65 .561 -.058 1 11 AR13SWS 1786 1847 62 2 0 .785 61.08 72.10 4.155 .308 .063 2.55 .501 -.097 1 12 AR13SWBS 1849 1990 142 6 0 .714 60.89 69.72 3.831 .167 .066 2.39 .300 -.012 1 13 AR14NWS 1842 1975 134 6 0 .737 56.15 63.93 4.143 .455 .060 2.34 .349 -.009 1 14 AR15ES 1799 1990 192 8 0 .724 61.90 81.51 6.828 .721 .064 2.44 .306 -.030 1 15 AR16SWS 1840 1990 151 6 0 .752 60.68 69.32 3.349 .099 .059 2.40 .278 -.009 1 16 AR16NES 1693 1974 282 11 0 .728 57.00 67.61 4.727 .268 .077 2.50 .348 -.027 2 17 AR18WS 1765 1988 224 9 0 .712 49.38 57.59 3.504 .383 .060 2.37 .288 -.028 1 18 AR19ES 1586 1990 405 16 11 .196 47.17 58.06 3.713 .548 .058 2.53 .324 -.032 1 19 AR19WPS 1637 1990 354 14 2 .554 54.88 70.34 4.515 .463 .065 2.55 .293 -.007 1 20 AR21WS 1728 1990 263 10 0 .754 56.26 67.30 4.191 .289 .067 2.38 .297 -.018 1 21 AR22WS 1741 1782 42 1 0 .839 53.11 60.09 4.000 .127 .081 2.43 .578 -.036 1 22 AR22WBS 1785 1884 100 4 1 .639 51.61 60.09 3.475 .154 .068 2.37 .425 .042 1 23 AR22WCS 1886 1990 105 4 0 .788 53.50 61.60 3.666 .283 .065 2.31 .293 -.020 2 24 AR23SWS 1744 1827 84 4 0 .833 50.80 61.51 4.294 .238 .076 2.40 .339 -.084 2 25 AR24NES 1739 1952 214 9 1 .685 55.02 72.09 5.890 .636 .069 2.44 .292 -.011 1 26 AR143S 1680 1974 295 11 0 .712 53.49 72.42 5.548 .354 .090 2.53 .372 -.054 2 27 AR151S 1730 1974 245 9 0 .743 45.46 68.22 6.344 .456 .113 2.49 .407 -.020 2 28 AR152S 1728 1965 238 9 0 .749 38.03 52.92 5.901 .491 .125 2.37 .315 -.024 1 29 FTR6NS 1930 1990 61 2 0 .667 53.16 63.84 4.716 .569 .066 2.58 .598 .015 1 30 FTR8SS 1774 1990 217 9 0 .720 59.97 78.24 5.886 .611 .067 2.35 .252 -.021 1 31 FTR8ES 1766 1990 225 9 0 .759 48.29 63.70 4.163 .237 .083 2.34 .291 -.005 1 32 FTR10NS 1749 1990 242 10 1 .373 56.36 76.04 8.326 .393 .098 2.32 .206 .009 1 33 FTR11SS 1819 1990 172 7 1 .576 64.07 94.52 12.574 .851 .081 2.59 .420 .011 1 34 FTR13NS 1860 1990 131 5 0 .665 58.66 68.65 4.042 .350 .061 2.72 .535 -.002 1 35 FTR14WS 1851 1990 140 5 0 .363 52.79 72.05 8.188 .518 .092 2.38 .311 .100 1 36 FTR14ES 1848 1883 36 1 0 .587 54.37 59.12 3.391 .413 .052 2.31 .412 .067 1 37 FTR14EBS 1898 1990 93 4 0 .613 54.46 66.42 5.337 .748 .055 2.61 .556 -.041 1 38 FTR15WS 1782 1990 209 8 0 .400 58.76 68.36 5.866 .049 .087 2.22 .198 -.026 1 39 FTR17NS 1858 1990 133 5 0 .627 50.72 59.38 3.305 .400 .056 2.51 .362 -.058 1 40 FTR19ES 1753 1990 238 9 0 .664 46.90 55.56 2.977 .390 .054 2.50 .305 -.004 1 41 FTR25WAS 1769 1818 50 1 0 .821 54.65 62.07 4.293 .552 .056 2.42 .435 -.019 1 42 FTR25WS 1842 1990 149 6 0 .179 49.91 60.89 6.632 .106 .116 2.26 .252 -.027 2 43 FTR30NWS 1802 1989 188 7 0 .491 56.84 68.30 5.851 .189 .088 2.23 .199 -.019 1 44 FTR31SS 1860 1990 131 5 0 .714 60.97 74.79 5.594 .559 .070 2.42 .395 -.003 1 45 FTR33SWS 1859 1990 132 5 0 .742 56.55 67.61 4.797 -.017 .097 2.55 .467 -.032 1 46 FTR36SS 1799 1990 192 8 0 .400 48.54 56.51 4.905 .284 .073 2.19 .197 -.027 1 47 FTR38ES 1764 1906 143 6 0 .707 61.00 70.98 4.272 .342 .063 2.51 .334 .050 1 48 FTR38EBS 1914 1990 77 3 0 .691 60.78 69.42 3.512 .142 .062 2.72 .415 .025 1 PART 7: DESCRIPTIVE STATISTICS: Northern Alaska Composite 15:47 Wed 25 Apr 2012 Page 10 ----------------------------------------------------------------------------------------------------------------------------------- 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 () --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- 49 FTR38WS 1759 1990 232 9 0 .679 56.73 66.45 3.874 .333 .062 2.54 .334 .001 1 50 FTR44WS 1722 1923 202 8 0 .524 59.36 70.88 5.914 .554 .076 2.52 .381 -.030 3 51 21012ES 1633 1976 344 14 1 .605 42.96 50.08 2.672 .471 .049 2.47 .347 -.023 1 52 021012WS 1635 1976 342 14 1 .639 41.52 50.39 2.902 .487 .056 2.46 .348 -.020 1 53 21022NES 1577 1903 327 13 1 .626 48.26 57.30 4.040 .808 .039 2.38 .264 -.026 1 54 21022SWS 1560 1976 417 17 1 .591 41.68 49.49 2.919 .677 .044 2.48 .324 -.022 1 55 02103SS 1569 1924 356 14 5 .492 55.03 66.74 4.574 .539 .064 2.58 .370 -.011 1 56 21011NES 1611 1816 206 8 0 .682 49.91 58.68 3.479 .538 .052 2.54 .424 -.037 1 57 2103SWS 1524 1665 142 4 0 .702 62.29 69.89 3.879 .409 .050 2.50 .438 -.034 1 58 2103SWBS 1668 1852 185 8 0 .758 60.34 70.59 4.014 .410 .057 2.45 .306 -.025 1 59 21011SWS 1635 1736 102 4 0 .678 53.20 62.78 3.904 .353 .064 2.53 .418 -.040 1 60 02103NS 1595 1976 382 16 0 .689 53.79 66.48 4.494 .553 .060 2.29 .230 -.029 1 61 02102NES 1600 1819 220 8 0 .682 44.91 55.56 3.753 .624 .060 2.37 .266 -.030 1 62 02102SWS 1600 1662 63 2 0 .912 52.48 60.39 4.470 .593 .057 2.45 .400 -.044 1 63 TMW2SS 1830 1990 161 6 2 .410 50.63 63.28 4.137 .354 .069 2.37 .279 -.058 1 64 TMW8WS 1680 1812 133 5 0 .392 83.77 103.78 12.252 .240 .120 2.24 .228 -.038 1 65 TMW9ES 1753 1990 238 9 0 .557 45.46 54.57 6.137 .618 .063 2.37 .299 -.003 1 66 TMW9EPS 1691 1906 216 9 0 .621 54.00 62.67 3.848 .320 .063 2.44 .360 -.036 1 67 TMW11NWS 1677 1990 314 12 0 .619 53.37 67.73 6.502 .539 .079 2.41 .301 .021 1 68 TMW22NS 1690 1929 240 10 0 .651 55.45 63.27 4.075 .198 .074 2.42 .332 -.022 1 69 TMW22WPS 1617 1929 313 13 5 .387 51.42 62.15 5.231 .817 .048 2.59 .395 .018 1 70 TMW23ES 1780 1990 211 8 0 .547 48.38 59.45 4.892 .553 .072 2.32 .268 -.030 1 71 TMW26SS 1639 1961 323 13 4 .482 59.16 73.15 4.164 .138 .068 2.46 .267 -.011 1 72 TMW29SWS 1848 1990 143 6 0 .531 53.67 65.35 3.897 .252 .067 2.52 .400 -.024 1 73 TMW31NS 1755 1990 236 9 0 .603 59.98 87.50 5.777 .358 .084 2.42 .392 -.044 1 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 14309 563 41 .610 53.53 103.78 4.811 .434 .068 2.72 .328 -.018