Central Alaska Composite - ak111 Additional Site Information Rosanne D'Arrigo Rob Wilson Gordon Jacoby Notes: Central Alaska Composite, includes sites 12 Mile Summit and Savage River. 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 : AK111.CRN Measurement file name : AK111.RWL Date checked : 25APR12 Checked by : B. Bauer Beginning year : 1556 Ending year : 1990 Principal investigators: Rosanne D'Arrigo Rob Wilson Gordon Jacoby Site name : Central Alaska Composite Site location : Alaska Species information : PCGL WHITE SPRUCE Latitude : 6400 Longitude : -14700 Elevation : M Series intercorrelation: 0.590 Avg mean sensitivity : 0.210 Avg standard deviation : 0.181 Avg autocorrelation : 0.772 Number dated series : 51 Segment length tested : 50 Number problem segments: 24 Pct problem segments : 5.18 PART 5: CORRELATION OF SERIES BY SEGMENTS: Central Alaska Composite 11:25 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 TMW2SS 1830 1990 .38 .31A .58 .63 .61 .57 2 TMW8WS 1680 1812 .09B .11B .70 .64 .65 3 TMW9ES 1753 1990 .70 .58 .53 .66 .62 .54 .70 .76 .60 4 TMW9EPS 1691 1906 .68 .67 .74 .73 .57 .48 .51 .52 .62 5 TMW11NWS 1677 1990 .22B .18B .76 .73 .62 .74 .76 .69 .77 .78 .74 .78 6 TMW22NS 1690 1929 .64 .56 .54 .67 .41 .36 .59 .45 .37 .40 7 TMW22WPS 1617 1929 .38 .51 .58 .71 .57 .43 .39 .18B .25B .60 .55 .55 .57 8 TMW23ES 1780 1990 .56 .61 .66 .61 .73 .79 .77 .70 9 TMW26SS 1639 1961 .59 .61 .65 .66 .72 .78 .72 .66 .61 .53 .52 .57 .60 10 TMW29SWS 1848 1990 .48 .54 .62 .64 .61 .55 11 TMW31NS 1755 1990 .66 .65 .63 .58 .58 .72 .72 .73 .70 12 TME1ES 1709 1990 .52 .44 .51 .45 .47 .59 .53 .65 .74 .67 .61 13 TME1NBS 1672 1902 .59 .50 .55 .44 .49 .50 .55 .61 .61 .60 14 TME2SS 1783 1990 .64 .72 .68 .70 .85 .65 .53 .48 15 TME21ES 1782 1990 .54 .59 .68 .64 .54 .60 .52 .48 16 TME24SES 1780 1960 .44 .31A .21B .41 .67 .66 .72 17 TME26NS 1869 1990 .62 .64 .69 .71 .71 18 SR01WS 1746 1986 .79 .78 .62 .68 .79 .63 .08B .20B .72 .75 19 SR4SES 1707 1938 .51 .70 .76 .68 .52 .34 .44 .59 .64 20 SR04SES 1665 1795 .49 .45 .58 .69 .59 21 SR8ES 1746 1898 .66 .66 .57 .59 .56 .54 22 SR8WS 1810 1990 .73 .63 .58 .73 .73 .71 .78 23 SR9BS 1814 1990 .76 .75 .57 .52 .67 .58 .62 24 SR09CS 1770 1990 .71 .69 .75 .71 .63 .62 .70 .78 .65 25 SR13BS 1610 1917 .79 .80 .81 .69 .51 .68 .65 .47 .70 .79 .60 .63 26 SR13CS 1595 1990 .87 .85 .81 .80 .72 .75 .79 .61 .43 .55 .67 .56 .59 .59 .69 .74 27 SR14WS 1750 1966 .51 .34 .39 .65 .45 .58 .64 .57 28 SR15AS 1802 1910 .62 .53 .66 .70 29 SR17AS 1771 1889 .77 .75 .70 .64 .69 30 SR17ARS 1759 1866 .82 .83 .83 .80 31 SR18NES 1776 1990 .66 .76 .76 .65 .74 .54 .51 .59 32 SR23AS 1805 1990 .64 .70 .62 .58 .64 .70 .73 33 SR25CS 1714 1990 .61 .66 .84 .80 .75 .69 .63 .58 .49 .65 .61 34 SR25CRS 1708 1955 .69 .74 .79 .77 .82 .79 .74 .72 .73 .72 35 SR50NWS 1773 1936 .43 .45 .43 .39 .49 .55 .55 36 SR51NS 1834 1989 .30B .28B .57 .58 .45 .40B 37 SR54NS 1749 1980 .60 .59 .67 .82 .88 .79 .54 .53 .65 .67 38 SR54EWS 1695 1778 .41 .45 .61 .61 39 TM40BS 1591 1941 .73 .71 .55 .61 .64 .58 .78 .83 .79 .76 .73 .72 .27B .31B 40 TM40BRS 1565 1850 .39 .43 .68 .55 .51 .68 .67 .78 .76 .73 .77 .76 41 TM41DS 1857 1989 .50 .51 .62 .58 .63 42 TM42CS 1610 1990 .51 .67 .68 .37 .35 .66 .71 .65 .64 .78 .72 .71 .76 .70 .68 43 TM43BS 1556 1990 .33A .41 .66 .71 .75 .65 .59 .75 .72 .54 .70 .83 .54 .56 .21A .08B .37 44 ESR2ES 1652 1990 .63 .46 .22A .49 .66 .54 .52 .69 .51 .40 .44 .52 .57 45 ESR2SWS 1727 1916 .64 .69 .42 .37 .48 .36 .40 46 ESR52WS 1585 1905 .66 .61 .70 .73 .49 .53 .55 .53 .42 .44 .59 .57 .55 47 SAV03SS 1688 1988 .65 .64 .72 .68 .54 .64 .76 .73 .76 .66 .59 .70 48 SAV04ES 1791 1988 .58 .65 .69 .49 .55 .31B .17B .20B 49 SAV04SS 1797 1988 .82 .81 .72 .32B .51 .62 .57 .67 50 SAV07NS 1661 1987 .43 .38 .49 .53 .36 .45 .74 .79 .53 .50 .58 .49 .51 51 SAV07SS 1669 1956 .61 .55 .66 .67 .37 .39 .71 .71 .60 .40 .36 .38 Av segment correlation .36 .62 .65 .65 .63 .53 .53 .65 .65 .58 .62 .64 .57 .58 .59 .60 .61 PART 7: DESCRIPTIVE STATISTICS: Central Alaska Composite 11:25 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 TMW2SS 1830 1990 161 6 1 .526 .34 .97 .142 .686 .242 2.70 .310 -.065 2 2 TMW8WS 1680 1812 133 5 2 .359 .56 .99 .190 .646 .206 2.39 .249 -.029 1 3 TMW9ES 1753 1990 238 9 0 .619 .25 .79 .121 .727 .283 2.67 .442 -.009 2 4 TMW9EPS 1691 1906 216 9 0 .611 .41 1.22 .248 .849 .229 2.57 .459 -.030 3 5 TMW11NWS 1677 1990 314 12 2 .633 .53 1.32 .202 .755 .192 2.56 .311 .056 1 6 TMW22NS 1690 1929 240 10 0 .524 .32 .66 .099 .433 .251 2.72 .368 -.014 1 7 TMW22WPS 1617 1929 313 13 2 .478 .38 1.23 .226 .771 .252 2.60 .367 -.020 1 8 TMW23ES 1780 1990 211 8 0 .678 .39 .87 .145 .731 .214 2.59 .381 -.039 1 9 TMW26SS 1639 1961 323 13 0 .602 .22 .58 .118 .840 .266 2.53 .313 -.004 1 10 TMW29SWS 1848 1990 143 6 0 .557 .60 1.28 .225 .777 .179 2.62 .315 -.043 1 11 TMW31NS 1755 1990 236 9 0 .652 .38 1.06 .176 .817 .221 2.63 .465 -.033 1 12 TME1ES 1709 1990 282 11 0 .566 .34 .72 .140 .858 .178 2.73 .483 -.032 2 13 TME1NBS 1672 1902 231 10 0 .531 .35 .81 .153 .862 .194 2.57 .405 -.049 1 14 TME2SS 1783 1990 208 8 0 .676 .58 1.48 .276 .700 .326 2.59 .441 -.028 1 15 TME21ES 1782 1990 209 8 0 .579 .27 .52 .101 .755 .219 2.66 .415 -.036 3 16 TME24SES 1780 1960 181 7 2 .490 .72 1.96 .322 .879 .176 2.64 .414 -.011 1 17 TME26NS 1869 1990 122 5 0 .653 .55 .93 .136 .522 .182 2.56 .447 .014 1 18 SR01WS 1746 1986 241 10 2 .558 .24 .63 .087 .690 .218 2.54 .265 -.034 1 19 SR4SES 1707 1938 232 9 0 .561 .29 .62 .102 .737 .192 2.76 .324 -.025 3 20 SR04SES 1665 1795 131 5 0 .548 .36 .76 .149 .827 .179 2.73 .448 -.030 1 21 SR8ES 1746 1898 153 6 0 .592 .30 1.18 .192 .896 .196 2.67 .377 .024 1 22 SR8WS 1810 1990 181 7 0 .691 .41 1.01 .174 .805 .190 2.71 .378 -.033 1 23 SR9BS 1814 1990 177 7 0 .636 .34 .84 .157 .715 .270 2.73 .445 -.002 2 24 SR09CS 1770 1990 221 9 0 .669 .38 .87 .145 .670 .219 2.86 .383 -.013 1 25 SR13BS 1610 1917 308 12 0 .697 .43 .94 .139 .485 .233 2.69 .372 -.015 2 26 SR13CS 1595 1990 396 16 0 .689 .45 1.10 .148 .558 .223 2.60 .323 -.041 2 27 SR14WS 1750 1966 217 8 0 .463 .55 1.27 .207 .839 .176 2.41 .239 -.049 1 28 SR15AS 1802 1910 109 4 0 .644 .61 1.08 .180 .548 .218 2.58 .493 -.025 1 29 SR17AS 1771 1889 119 5 0 .702 .93 1.97 .431 .869 .193 2.55 .453 -.011 1 30 SR17ARS 1759 1866 108 4 0 .806 1.02 2.85 .476 .852 .187 2.74 .435 -.066 1 31 SR18NES 1776 1990 215 8 0 .658 .47 1.36 .210 .709 .257 2.67 .442 .006 1 32 SR23AS 1805 1990 186 7 0 .650 .82 1.85 .349 .860 .191 2.77 .423 .049 1 33 SR25CS 1714 1990 277 11 0 .656 .50 1.84 .310 .894 .185 2.78 .446 .020 1 34 SR25CRS 1708 1955 248 10 0 .737 .49 1.86 .249 .832 .187 2.85 .448 -.036 1 35 SR50NWS 1773 1936 164 7 0 .447 .60 1.38 .218 .636 .230 2.40 .283 -.058 1 36 SR51NS 1834 1989 156 6 3 .446 .27 .58 .132 .732 .264 2.53 .337 .059 1 37 SR54NS 1749 1980 232 10 0 .655 .38 .95 .151 .735 .241 2.69 .392 -.005 1 38 SR54EWS 1695 1778 84 4 0 .528 .62 1.77 .270 .731 .228 2.49 .333 -.025 1 39 TM40BS 1591 1941 351 14 2 .610 .44 1.19 .235 .886 .200 2.49 .248 -.043 1 40 TM40BRS 1565 1850 286 12 0 .607 .24 1.29 .170 .926 .221 2.66 .414 -.012 1 41 TM41DS 1857 1989 133 5 0 .572 .27 .48 .079 .862 .125 2.59 .410 .000 2 42 TM42CS 1610 1990 381 15 0 .642 .25 .63 .118 .793 .239 2.61 .372 -.041 3 43 TM43BS 1556 1990 435 17 3 .480 .36 1.47 .214 .909 .173 2.40 .199 -.049 1 44 ESR2ES 1652 1990 339 13 1 .518 .36 .85 .136 .869 .146 2.57 .315 -.033 1 45 ESR2SWS 1727 1916 190 7 0 .449 .26 .66 .111 .881 .167 2.39 .274 -.039 1 46 ESR52WS 1585 1905 321 13 0 .562 .37 1.58 .285 .935 .176 2.79 .421 -.020 1 47 SAV03SS 1688 1988 301 12 0 .685 .30 .84 .126 .710 .212 2.93 .494 -.032 3 48 SAV04ES 1791 1988 198 8 3 .449 .38 .96 .169 .784 .194 2.37 .246 -.032 1 PART 7: DESCRIPTIVE STATISTICS: Central Alaska Composite 11:25 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 SAV04SS 1797 1988 192 8 1 .626 .37 .98 .155 .759 .192 2.69 .372 -.009 1 50 SAV07NS 1661 1987 327 13 0 .521 .28 .69 .095 .772 .170 2.63 .356 -.019 1 51 SAV07SS 1669 1956 288 12 0 .527 .37 1.21 .193 .795 .208 2.74 .387 .002 1 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 11658 463 24 .590 .40 2.85 .181 .772 .210 2.93 .369 -.021