Giddings, Alaska - ak110 Additional Site Information Gordon Jacoby, Rosanne D'Arrigo, and Brendan Buckley 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 : AK110.CRN Measurement file name : AK110.RWL Date checked : 15NOV11 Checked by : B. Bauer Beginning year : 980 Ending year : 1990 Principal investigators: Gordon Jacoby Rosanne D'Arrigo Brendan Buckley Site name : Giddings Site location : Alaska Species information : PCGL WHITE SPRUCE Latitude : 6705 Longitude : -15755 Elevation : M Series intercorrelation: 0.617 Avg mean sensitivity : 0.213 Avg standard deviation : 0.607 Avg autocorrelation : 0.784 Number dated series : 84 Segment length tested : 50 Number problem segments: 11 Pct problem segments : 1.67 PART 5: CORRELATION OF SERIES BY SEGMENTS: Giddings 11:33 Tue 15 Nov 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 1075 1100 1125 1150 1175 1200 1225 1250 1275 1300 1325 1350 1375 1400 1425 1450 1475 1500 1525 1550 1124 1149 1174 1199 1224 1249 1274 1299 1324 1349 1374 1399 1424 1449 1474 1499 1524 1549 1574 1599 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 EK1129 1327 1404 .45 .61 .58 2 EK26A 1331 1398 .57 .63 3 EK26B 1334 1398 .71 .63 4 EK1112 1328 1396 .67 .65 5 EK2B 1121 1384 .72 .73 .67 .59 .63 .63 .69 .74 .69 .75 .76 6 EK1135 1179 1377 .51 .64 .56 .45 .37 .31B .56 .55 7 EK30A 1280 1374 .51 .52 .34 8 EK42B 1099 1373 .62 .62 .50 .48 .57 .66 .70 .71 .79 .71 .62 9 EK36A 1174 1372 .54 .58 .75 .75 .58 .65 .57 .65 10 EK7A 1239 1371 .39 .36 .53 .54 .55 11 EK7B 1239 1375 .49 .44 .46 .36 .40 .37 12 EK28A 1229 1370 .55 .53 .53 .50 .61 13 EK6B 1221 1369 .41 .40 .46 .75 .76 .76 14 EK6A 1229 1364 .41 .66 .72 .63 .76 15 EK1133 1214 1363 .53 .57 .41 .45B .55 .72 16 EK1118 1205 1355 .37 .36 .50 .58 .56 .61 17 EK5A 1125 1348 .80 .61 .55 .71 .64 .73 .84 .59 18 EK8A 1097 1239 .69 .70 .66 .47 .53 .65 19 EK8B 1097 1237 .64 .64 .73 .31A .29B .44 20 EK1110 1135 1325 .48 .44 .54 .54 .36 .23B .53 .53 21 EK1125 1094 1318 .60 .64 .46 .34 .42 .35 .38 .71 .62 22 EK812B 1170 1312 .43 .49 .49 .43 .58 .67 23 EK2A 1120 1281 .73 .71 .71 .78 .80 .76 .59 24 K111A 1326 1398 .74 .72 25 K111A 1425 1517 .67 .73 .76 26 K111B 1326 1517 .64 .56 .53 .52 .57 .75 .76 27 K113A 1380 1507 .69 .66 .58 .68 .72 28 K113B 1380 1507 .74 .61 .65 .74 .73 29 K831 1416 1520 .48 .33A .69 .76 30 TRBUL 980 1947 .59 .61 .65 .55 .70 .67 .68 .84 .83 .78 .80 .82 .65 .47 .51 .56 .68 .77 .67 .58 32 SQR3 1540 1947 .49 .60 33 SQR5 1527 1947 .54 .48 Av segment correlation .63 .66 .64 .51 .55 .58 .53 .56 .62 .57 .63 .63 .64 .55 .55 .69 .73 .77 .57 .55 PART 5: CORRELATION OF SERIES BY SEGMENTS: Giddings 11:33 Tue 15 Nov 2011 Page 6 ----------------------------------------------------------------------------------------------------------------------------------- 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 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 30 TRBUL 980 1947 .64 .81 .84 .81 .76 .77 .72 .68 .80 .78 .77 .81 .83 .85 31 SQR2 1588 1947 .64 .59 .59 .54 .56 .71 .72 .61 .59 .52 .61 .75 .71 .69 32 SQR3 1540 1947 .56 .72 .79 .78 .75 .77 .83 .82 .80 .69 .70 .77 .72 .75 33 SQR5 1527 1947 .49 .50 .47 .40 .55 .83 .85 .73 .67 .52 .57 .81 .78 .76 34 SQR6 1776 1947 .75 .68 .66 .72 .72 .70 35 SQR7 1630 1947 .58 .61 .65 .80 .76 .63 .63 .65 .66 .72 .73 .73 36 SQR9 1675 1947 .49 .50 .61 .43 .41 .59 .58 .67 .79 .80 37 SQR11 1672 1947 .45 .53 .59 .71 .51 .47 .71 .61 .69 .70 .65 38 SQR13 1702 1947 .59 .86 .66 .64 .68 .53 .67 .76 .73 39 SQR14 1699 1937 .66 .65 .70 .60 .65 .69 .65 .76 .74 .70 40 SQR15 1641 1947 .39 .63 .59 .72 .79 .76 .79 .62 .49 .67 .74 .73 41 SQR17 1830 1947 .51 .53 .52 .61 42 SQR19 1654 1947 .30B .36 .54 .70 .68 .68 .66 .60 .52 .55 .65 43 SQR20 1672 1947 .58 .61 .76 .86 .70 .71 .75 .60 .63 .77 .75 44 SQR21 1649 1837 .68 .67 .61 .61 .72 .69 .75 .78 45 SQR22 1610 1782 .45 .68 .62 .58 .69 .69 .64 46 SQR23 1671 1800 .56 .59 .58 .64 .61 .61 47 SQR24 1600 1706 .76 .77 .57 .57 48 SQR25 1678 1774 .63 .67 .77 49 SQR29 1630 1947 .63 .55 .66 .67 .73 .69 .65 .64 .41 .60 .73 .71 50 ND09 1579 1855 .47 .36 .41 .39 .50 .56 .52 .52 .62 .58 .60 51 ND10B 1795 1967 .62 .62 .62 .50 .69 .77 .77 52 ND14 1716 1958 .63 .63 .44 .33 .46 .66 .67 .72 .61 .54 53 ND16A 1694 1957 .54 .65 .63 .43 .51 .70 .72 .55 .56 .68 .68 54 ND16B 1694 1958 .51 .60 .55 .42 .52 .54 .50 .64 .76 .73 .69 55 ND19A 1748 1966 .47 .53 .57 .64 .70 .79 .85 .83 .78 56 ND19B 1748 1964 .49 .55 .57 .52 .61 .67 .79 .82 .77 57 ND20A 1728 1965 .71 .63 .63 .60 .60 .66 .80 .75 .66 58 ND20B 1726 1966 .72 .61 .38 .31A .43 .48 .63 .61 .52 59 ND25A 1623 1920 .45 .46 .55 .53 .68 .68 .63 .70 .69 .61 .65 .70 60 ND25B 1700 1906 .45 .63 .54 .50 .40 .50 .57 .54 61 ND33A 1600 1752 .58 .73 .63 .63 .69 .70 62 ND33B 1600 1759 .70 .74 .69 .64 .77 .80 63 ND38A 1668 1855 .38 .41 .60 .73 .74 .63 .45 .51 64 ND38B 1668 1825 .47 .52 .61 .67 .62 .28A .24A 65 021071 1743 1977 .62 .60 .53 .54 .38 .60 .78 .66 .49 .53 66 021072 1743 1977 .67 .62 .59 .62 .65 .74 .78 .77 .59 .64 67 021073 1754 1977 .58 .61 .65 .66 .73 .77 .71 .41 .49 68 021074 1754 1977 .54 .60 .51 .52 .78 .81 .74 .57 .64 69 021091 1648 1977 .48 .49 .47 .60 .74 .74 .73 .73 .66 .63 .72 .77 .63 .67 70 021092 1662 1977 .70 .55 .55 .68 .62 .63 .66 .64 .68 .59 .59 .60 .63 71 021093 1648 1977 .60 .61 .62 .64 .72 .64 .71 .60 .56 .72 .78 .76 .55 .56 72 021102 1678 1977 .57 .58 .60 .58 .61 .59 .63 .75 .76 .69 .47 .48 73 021103 1709 1977 .70 .75 .75 .64 .59 .69 .77 .77 .76 .54 .57 74 021131 1758 1977 .42 .47 .53 .64 .73 .82 .74 .49 .54 75 021133 1734 1977 .65 .48 .46 .53 .65 .74 .79 .71 .46 .48 76 FTR6NS 1930 1990 .45B .61 77 FTR10NBS 1914 1949 .58 78 FTR10NCS 1952 1990 .46 79 FTR14WBS 1915 1990 .69 .46 .52 80 FTR14ES 1848 1883 .49 81 FTR19ES 1753 1990 .73 .75 .59 .67 .78 .72 .47 .39 .62 82 FTR25WCS 1959 1990 .51 83 FTR36SS 1799 1882 .33 .34 .33 .37 84 FTR38EBS 1914 1990 .80 .62 .61 Av segment correlation .56 .59 .62 .56 .57 .65 .69 .61 .60 .59 .59 .67 .73 .71 .57 .56 PART 7: DESCRIPTIVE STATISTICS: Giddings 11:33 Tue 15 Nov 2011 Page 12 ----------------------------------------------------------------------------------------------------------------------------------- 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 EK1129 1327 1404 78 3 0 .489 .28 .52 .111 .705 .233 2.70 .510 .027 1 2 EK26A 1331 1398 68 2 0 .586 .52 1.47 .212 .769 .192 2.55 .423 .005 1 3 EK26B 1334 1398 65 2 0 .647 .41 .86 .141 .669 .215 2.72 .494 .040 1 4 EK1112 1328 1396 69 2 0 .598 .59 1.42 .268 .832 .201 2.64 .427 -.015 1 5 EK2B 1121 1384 264 11 0 .688 .30 1.08 .169 .908 .184 2.64 .403 -.050 1 6 EK1135 1179 1377 199 8 1 .476 .31 1.15 .160 .850 .204 2.61 .325 .007 1 7 EK30A 1280 1374 95 3 0 .431 .10 .22 .031 .630 .205 2.59 .491 -.021 2 8 EK42B 1099 1373 275 11 0 .640 .27 .58 .107 .739 .233 2.58 .365 -.011 1 9 EK36A 1174 1372 199 8 0 .653 .27 .56 .088 .696 .200 2.72 .466 -.049 1 10 EK7A 1239 1371 133 5 0 .487 .23 .72 .164 .932 .199 2.64 .459 -.060 1 11 EK7B 1239 1375 137 6 0 .418 .25 .69 .169 .929 .191 2.72 .467 -.014 1 12 EK28A 1229 1370 142 5 0 .585 .17 .92 .162 .907 .227 2.63 .422 -.028 1 13 EK6B 1221 1369 149 6 0 .627 .21 .80 .100 .780 .183 2.69 .390 .018 1 14 EK6A 1229 1364 136 5 0 .640 .21 .47 .070 .706 .208 2.52 .339 -.066 1 15 EK1133 1214 1363 150 6 1 .573 .53 1.91 .360 .851 .252 2.62 .377 -.022 3 16 EK1118 1205 1355 151 6 0 .465 .22 .63 .107 .844 .200 2.80 .386 .094 1 17 EK5A 1125 1348 224 8 0 .667 .26 .46 .062 .502 .191 2.66 .406 .016 1 18 EK8A 1097 1239 143 6 0 .596 .40 1.13 .266 .869 .218 2.52 .365 -.004 1 19 EK8B 1097 1237 141 6 2 .496 .41 1.19 .272 .881 .214 2.61 .455 -.007 1 20 EK1110 1135 1325 191 8 1 .468 .34 1.10 .259 .952 .175 2.58 .362 -.031 1 21 EK1125 1094 1318 225 9 0 .497 .30 1.07 .183 .853 .226 2.90 .400 -.022 1 22 EK812B 1170 1312 143 6 0 .515 .36 1.29 .196 .841 .203 2.67 .461 -.038 2 23 EK2A 1120 1281 162 7 0 .723 .38 1.08 .139 .799 .165 2.58 .339 -.031 1 24 K111A 1326 1398 73 2 0 .690 .23 .73 .195 .946 .248 2.72 .517 .001 2 25 K111A 1425 1517 93 3 0 .676 .35 .79 .175 .872 .177 2.52 .422 .022 2 26 K111B 1326 1517 192 7 0 .601 .21 .68 .154 .927 .204 2.76 .388 .003 1 27 K113A 1380 1507 128 5 0 .663 .34 .74 .133 .744 .214 2.72 .357 -.057 1 28 K113B 1380 1507 128 5 0 .692 .38 .79 .135 .744 .217 2.68 .383 -.013 2 29 K831 1416 1520 105 4 1 .639 .63 1.78 .395 .860 .238 2.64 .381 .099 2 30 TRBUL 980 1947 968 34 0 .700 1.00 2.45 .264 .466 .201 2.71 .329 -.015 9 31 SQR2 1588 1947 360 14 0 .636 .30 .88 .114 .706 .203 2.82 .336 -.017 1 32 SQR3 1540 1947 408 16 0 .714 .34 .93 .140 .714 .234 2.54 .300 -.021 1 33 SQR5 1527 1947 421 16 0 .627 .17 .61 .106 .838 .282 2.67 .325 -.010 1 34 SQR6 1776 1947 172 6 0 .684 .38 .93 .179 .823 .205 2.59 .357 -.032 1 35 SQR7 1630 1947 318 12 0 .656 .34 .82 .127 .705 .216 2.69 .352 -.005 1 36 SQR9 1675 1947 273 10 0 .592 .36 1.02 .190 .882 .180 2.49 .337 -.033 1 37 SQR11 1672 1947 276 11 0 .596 .48 1.13 .189 .742 .219 2.76 .437 -.061 1 38 SQR13 1702 1947 246 9 0 .648 .45 1.04 .169 .754 .212 2.64 .404 -.007 1 39 SQR14 1699 1937 239 10 0 .651 .46 .96 .172 .781 .191 2.47 .280 -.014 1 40 SQR15 1641 1947 307 12 0 .645 .34 .70 .134 .769 .208 2.71 .462 -.044 1 41 SQR17 1830 1947 118 4 0 .517 .80 1.95 .413 .809 .226 2.67 .424 -.058 1 42 SQR19 1654 1947 294 11 1 .532 .25 1.07 .207 .920 .245 2.80 .392 -.022 3 43 SQR20 1672 1947 276 11 0 .707 .31 .82 .153 .851 .206 2.63 .331 -.021 1 44 SQR21 1649 1837 189 8 0 .678 .47 1.05 .240 .887 .186 2.87 .453 -.078 1 45 SQR22 1610 1782 173 7 0 .568 .35 .84 .110 .537 .225 2.77 .454 -.014 1 46 SQR23 1671 1800 130 6 0 .577 .38 .78 .136 .748 .198 2.73 .451 -.027 4 47 SQR24 1600 1706 107 4 0 .675 .28 .65 .096 .709 .197 2.86 .529 -.001 1 48 SQR25 1678 1774 97 3 0 .684 .38 .84 .149 .711 .211 2.58 .392 .005 1 PART 7: DESCRIPTIVE STATISTICS: Giddings 11:33 Tue 15 Nov 2011 Page 13 ----------------------------------------------------------------------------------------------------------------------------------- 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 SQR29 1630 1947 318 12 0 .633 .48 1.15 .221 .802 .230 2.66 .360 -.039 1 50 ND09 1579 1855 277 11 0 .495 .16 .46 .076 .741 .255 2.64 .447 -.014 1 51 ND10B 1795 1967 173 7 0 .637 .33 1.54 .278 .957 .178 2.44 .326 -.035 1 52 ND14 1716 1958 243 10 0 .544 .25 .87 .164 .881 .247 2.73 .454 -.044 1 53 ND16A 1694 1957 264 11 0 .568 .26 1.00 .182 .890 .217 2.74 .310 -.011 1 54 ND16B 1694 1958 265 11 0 .564 .28 1.00 .159 .861 .226 2.78 .324 -.036 1 55 ND19A 1748 1966 219 9 0 .688 .32 1.26 .163 .770 .224 2.72 .404 -.002 1 56 ND19B 1748 1964 217 9 0 .642 .28 1.29 .153 .806 .230 2.75 .415 -.025 1 57 ND20A 1728 1965 238 9 0 .660 .33 .86 .135 .722 .222 2.66 .411 -.050 4 58 ND20B 1726 1966 241 9 1 .535 .33 .85 .147 .765 .209 2.67 .359 -.014 1 59 ND25A 1623 1920 298 12 0 .612 .31 .98 .169 .794 .268 2.73 .400 -.041 3 60 ND25B 1700 1906 207 8 0 .499 .15 .45 .089 .834 .268 2.95 .408 .008 1 61 ND33A 1600 1752 153 6 0 .632 .51 1.49 .232 .684 .267 2.83 .453 -.063 1 62 ND33B 1600 1759 160 6 0 .724 .46 1.15 .177 .687 .250 2.63 .494 -.070 1 63 ND38A 1668 1855 188 8 0 .580 .44 1.39 .261 .841 .227 2.81 .439 -.007 1 64 ND38B 1668 1825 158 7 2 .480 .49 1.20 .216 .757 .220 3.11 .476 -.019 1 65 021071 1743 1977 235 10 0 .608 .48 1.14 .251 .865 .198 2.51 .329 -.015 1 66 021072 1743 1977 235 10 0 .689 .54 1.32 .263 .857 .181 2.53 .294 -.040 1 67 021073 1754 1977 224 9 0 .653 .58 1.35 .297 .846 .198 2.59 .446 -.038 1 68 021074 1754 1977 224 9 0 .655 .52 1.30 .270 .888 .176 2.53 .338 -.041 1 69 021091 1648 1977 330 14 0 .658 .22 .57 .099 .825 .203 2.64 .317 -.045 1 70 021092 1662 1977 316 13 0 .612 .28 .80 .165 .888 .204 2.70 .401 -.022 4 71 021093 1648 1977 330 14 0 .658 .29 .87 .165 .892 .197 2.73 .394 -.033 1 72 021102 1678 1977 300 12 0 .623 .29 .73 .131 .804 .202 2.63 .346 .018 1 73 021103 1709 1977 269 11 0 .695 .36 .81 .168 .840 .212 2.50 .291 -.019 1 74 021131 1758 1977 220 9 0 .637 .35 .83 .131 .790 .187 2.57 .338 -.029 1 75 021133 1734 1977 244 10 0 .629 .30 .66 .103 .741 .188 2.48 .315 -.005 1 76 FTR6NS 1930 1990 61 2 1 .557 42.86 97.96 22.885 .906 .168 2.51 .426 -.062 1 77 FTR10NBS 1914 1949 36 1 0 .575 31.21 45.88 7.938 .459 .219 2.68 .686 -.105 1 78 FTR10NCS 1952 1990 39 1 0 .464 19.36 37.20 9.636 .840 .254 2.89 .656 .056 1 79 FTR14WBS 1915 1990 76 3 0 .691 32.91 76.26 16.071 .816 .201 2.77 .446 -.074 1 80 FTR14ES 1848 1883 36 1 0 .492 43.71 97.96 16.587 .736 .198 2.92 .757 -.123 1 81 FTR19ES 1753 1990 238 9 0 .651 17.74 53.32 8.021 .799 .211 2.74 .495 -.064 1 82 FTR25WCS 1959 1990 32 1 0 .506 36.66 58.90 6.826 .442 .132 2.95 .612 .065 1 83 FTR36SS 1799 1882 84 4 0 .415 19.60 53.32 7.133 .705 .206 2.76 .455 -.086 1 84 FTR38EBS 1914 1990 77 3 0 .723 37.47 60.75 10.640 .775 .144 2.53 .445 -.053 1 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 16855 660 11 .617 1.46 97.96 .607 .784 .213 3.11 .385 -.023