Death Valley, Alaska, USA - AK062 Additional Site Information Rosanne D'Arrigo, Erika Mashig, David Frank, Rob Wilson and Gordon Jacoby. Purpose of Collection: Climate analysis Measurement type: Total ring width Location of core material: Tree-Ring Laboratory Lamont-Doherty Earth Observatory Palisades, New York 10964 Reference: D'Arrigo, R., E. Mashig, D. Frank, R. Wilson and G. Jacoby. 2005. Temperature Variability over the past millennium inferred from northwestern Alaska tree rings. Climate Dynamics 24: 227-236. doi:10.1007/s00382-004-0502-1. COFECHA Chronology file name : AK062.CRN Measurement file name : AK062.RWL Date checked : 13JAN06 Checked by : B. Bauer Beginning year : 1358 Ending year : 2002 Principal investigators: R. D'Arrigo E. Mashig D. Frank R. Wilson G. Jacoby Site name : Death Valley Site location : Alaska Species information : PCGL WHITE SPRUCE Latitude : +6512 Longitude : -16216 Elevation : 239M Series intercorrelation: 0.616 Avg mean sensitivity : 0.225 Avg standard deviation : 0.182 Avg autocorrelation : 0.810 Number dated series : 51 Segment length tested : 50 Number problem segments: 46 Pct problem segments : 6.81 PART 5: CORRELATION OF SERIES BY SEGMENTS: Death Valley 12:05 Fri 13 Jan 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 1350 1375 1400 1425 1450 1475 1500 1525 1550 1575 1600 1625 1650 1675 1700 1725 1750 1775 1800 1825 1399 1424 1449 1474 1499 1524 1549 1574 1599 1624 1649 1674 1699 1724 1749 1774 1799 1824 1849 1874 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 DV00 1446 1811 .51 .54 .59 .62 .63 .56 .50 .63 .70 .53 .64 .79 .68 .43 .27B 2 DV01a 1637 1950 .11B .19B .47 .67 .70 .73 .74 .63 .65 3 DV01b 1698 1953 .38B .39B .58 .68 .78 .56 .38B 4 DV02a 1650 1884 .16B .50 .60 .70 .79 .80 .61 .52 5 DV02b 1639 1997 -.24B-.03B .30A .40 .58 .74 .74 .66 .54 6 DV02c 1658 1965 .36 .32A .37B .57 .63 .69 .70 .59 7 DV02d 1658 1998 .53 .62 .73 .65 .59 .68 .57 .49 8 DV03a 1630 2002 .33 .43 .70 .72 .73 .69 .74 .72 .69 9 DV03b 1630 2002 .44 .46 .73 .86 .82 .79 .82 .64 .55 10 DV04a 1642 1955 .45 .51 .41 .40 .38 .52 .64 .54 .60 11 DV05a 1676 2002 .59 .81 .77 .67 .69 .59 .64 12 DV05b 1676 2002 .68 .80 .76 .79 .85 .83 .79 13 DV06a 1476 1803 .50 .63 .62 .69 .61 .47 .63 .67 .47 .48 .51 .33 .21B 14 DV07a 1704 2002 .71 .73 .80 .81 .74 .67 15 DV07b 1704 2002 .76 .73 .79 .86 .78 .72 16 DV08a 1701 2002 .66 .76 .75 .71 .69 .73 17 DV09a 1624 2002 .45 .46 .60 .49 .54 .68 .79 .72 .58 .57 18 DV09b 1624 2002 .32A .31A .33A .48 .72 .84 .82 .80 .73 .65 19 DV10a 1623 1847 .43 .41 .54 .75 .76 .66 .64 .58 .45 20 DV10b 1623 1833 .28A .26A .56 .66 .78 .77 .59 .58 .53 21 DV12a 1695 2001 .69 .64 .66 .71 .64 .47 .56 22 DV12b 1653 2001 .50 .63 .63 .68 .68 .63 .48 .52 23 DV13a 1719 2002 .64 .73 .59 .61 .65 .60 24 DV13b 1794 2002 .66 .66 .65 25 DV14 1646 2002 .45 .55 .71 .73 .76 .62 .63 .69 .55 26 DV15 1710 2002 .25B .49 .87 .86 .83 .79 27 DV16 1665 2002 .47 .49 .76 .63 .59 .64 .57 .59 28 DV17 1696 2002 .60 .61 .52 .41 .64 .79 .59 29 DV18a 1709 2002 .77 .75 .70 .79 .73 .74 30 DV18b 1664 1992 .44 .44 .71 .75 .66 .60 .55 .62 31 DV19a 1728 2002 .70 .74 .80 .73 .73 32 DV19b 1634 2002 .23B .24A .20B .52 .75 .76 .80 .74 .76 33 DV20a 1661 2002 .68 .71 .77 .66 .51 .65 .72 .65 34 DV20b 1645 2002 .43 .46 .68 .77 .65 .50 .69 .74 .70 35 DV21a 1810 2002 .20B .43 37 DV22a 1532 2002 .27B .32A .61 .71 .75 .66 .65 .53 .43 .47 .46 .53 .64 38 DV22b 1548 1989 .50 .54 .58 .51 .67 .66 .67 .69 .60 .67 .76 .63 .70 39 DV24b 1619 2002 .43 .39 .56 .71 .76 .69 .61 .75 .79 .67 40 DV25a 1477 1826 .42 .58 .65 .72 .75 .70 .60 .49 .55 .79 .75 .61 .24B .23B 41 DV25b 1477 1822 .50 .60 .62 .52 .48 .61 .61 .59 .61 .66 .69 .70 .32A 42 DV27a 1736 2002 .64 .50 .52 .64 .66 43 DV27b 1714 2002 .71 .74 .70 .67 .63 .72 44 DV28a 1692 1996 .70 .73 .76 .67 .75 .76 .72 45 DV29a 1425 1906 .00B-.09B .12B .60 .61 .74 .82 .70 .69 .64 .69 .70 .68 .62 .60 .48 .52 46 DV29b 1405 1907 .11B-.13B-.07B .40 .72 .70 .80 .81 .66 .72 .62 .38 .49 .64 .68 .61 .40 .45 47 DV30 1624 1953 .64 .64 .76 .76 .71 .73 .84 .87 .76 .67 48 DV31 1760 2002 .58 .67 .69 .62 49 DV32 1660 1908 .15B .31A .70 .75 .70 .74 .70 .59 50 DV?a 1358 1833 .65 .51 .37 .31A .52 .45 .34 .55 .56 .43 .49 .55 .68 .57 .61 .74 .76 .65 .63 51 DV?b 1358 1820 .55 .37 .32A .52 .61 .71 .79 .79 .72 .41 .24B .44 .47 .59 .67 .61 .64 .51 Av segment correlation .60 .44 .27 .24 .30 .46 .61 .59 .62 .60 .52 .46 .48 .57 .66 .68 .66 .66 .63 .62 PART 5: CORRELATION OF SERIES BY SEGMENTS: Death Valley 12:05 Fri 13 Jan 2006 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 1850 1875 1900 1925 1950 1975 1899 1924 1949 1974 1999 2024 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 2 DV01a 1637 1950 .83 .86 .70 .69 3 DV01b 1698 1953 .70 .82 .69 .66 4 DV02a 1650 1884 .52 5 DV02b 1639 1997 .70 .85 .80 .48 .45 6 DV02c 1658 1965 .61 .74 .77 .58 7 DV02d 1658 1998 .51 .71 .86 .51 .11B 8 DV03a 1630 2002 .67 .74 .65 .40 .44 .40 9 DV03b 1630 2002 .61 .62 .72 .68 .56 .58 10 DV04a 1642 1955 .78 .76 .50 .49 11 DV05a 1676 2002 .80 .83 .70 .54 .62 .60 12 DV05b 1676 2002 .82 .83 .75 .66 .50 .51 14 DV07a 1704 2002 .76 .87 .83 .78 .77 .76 15 DV07b 1704 2002 .84 .84 .74 .68 .76 .75 16 DV08a 1701 2002 .72 .78 .78 .66 .72 .71 17 DV09a 1624 2002 .80 .84 .69 .55 .58 .54 18 DV09b 1624 2002 .80 .77 .54 .50 .66 .67 21 DV12a 1695 2001 .76 .80 .76 .74 .51 .52 22 DV12b 1653 2001 .76 .78 .70 .67 .62 .65 23 DV13a 1719 2002 .65 .63 .66 .73 .59 .51 24 DV13b 1794 2002 .76 .81 .71 .55 .53 .56 25 DV14 1646 2002 .64 .80 .78 .73 .45 .43 26 DV15 1710 2002 .67 .71 .85 .82 .80 .80 27 DV16 1665 2002 .64 .69 .66 .55 .43 .47 28 DV17 1696 2002 .77 .88 .79 .63 .53 .51 29 DV18a 1709 2002 .87 .87 .73 .32A .33B .32A 30 DV18b 1664 1992 .78 .87 .62 .45 .58 31 DV19a 1728 2002 .85 .81 .64 .57 .60 .58 32 DV19b 1634 2002 .79 .83 .77 .51 .36 .35 33 DV20a 1661 2002 .63 .77 .77 .68 .61 .60 34 DV20b 1645 2002 .76 .81 .79 .73 .74 .72 35 DV21a 1810 2002 .71 .78 .81 .73 .68 .67 36 DV21b 1856 1999 .40 .66 .77 .71 .80 37 DV22a 1532 2002 .63 .70 .76 .64 .64 .63 38 DV22b 1548 1989 .82 .82 .72 .53 .22B 39 DV24b 1619 2002 .66 .69 .64 .49 .59 .60 42 DV27a 1736 2002 .77 .68 .42 .40 .51 .52 43 DV27b 1714 2002 .76 .71 .50 .34 .45 .46 44 DV28a 1692 1996 .69 .68 .69 .51 .21B 45 DV29a 1425 1906 .62 .62 46 DV29b 1405 1907 .75 .75 47 DV30 1624 1953 .64 .70 .59 .58 48 DV31 1760 2002 .60 .62 .50 .23A .46 .44 49 DV32 1660 1908 .63 .52 Av segment correlation .71 .76 .70 .58 .54 .57 PART 7: DESCRIPTIVE STATISTICS: Death Valley 12:05 Fri 13 Jan 2006 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 DV00 1446 1811 366 15 1 .561 .35 .78 .155 .775 .251 2.67 .357 -.028 1 2 DV01a 1637 1950 314 13 2 .646 .29 1.12 .200 .873 .259 2.76 .394 -.072 1 3 DV01b 1698 1953 256 11 3 .608 .51 1.70 .322 .862 .210 2.59 .357 -.066 1 4 DV02a 1650 1884 235 9 1 .540 .31 .67 .116 .766 .204 2.78 .395 .035 2 5 DV02b 1639 1997 359 14 3 .533 .23 .57 .091 .704 .234 2.86 .435 -.026 1 6 DV02c 1658 1965 308 12 2 .576 .24 .64 .092 .716 .213 2.72 .396 -.025 1 7 DV02d 1658 1998 341 13 1 .567 .26 .62 .110 .775 .217 2.78 .483 -.005 2 8 DV03a 1630 2002 373 15 0 .619 .34 1.03 .201 .852 .241 2.70 .367 -.022 2 9 DV03b 1630 2002 373 15 0 .649 .30 .91 .144 .769 .237 2.90 .451 -.046 1 10 DV04a 1642 1955 314 13 0 .561 .36 1.17 .149 .713 .224 2.76 .339 -.060 1 11 DV05a 1676 2002 327 13 0 .685 .38 1.41 .292 .899 .241 2.76 .361 -.009 5 12 DV05b 1676 2002 327 13 0 .741 .44 1.19 .229 .809 .249 2.88 .415 -.023 1 13 DV06a 1476 1803 328 13 1 .505 .36 1.19 .251 .917 .216 2.73 .391 -.054 3 14 DV07a 1704 2002 299 12 0 .761 .48 1.16 .142 .492 .223 2.78 .446 -.045 2 15 DV07b 1704 2002 299 12 0 .776 .45 1.16 .158 .704 .213 2.53 .317 -.014 2 16 DV08a 1701 2002 302 12 0 .708 .36 .72 .124 .691 .224 2.70 .430 -.012 1 17 DV09a 1624 2002 379 16 0 .640 .35 1.02 .183 .888 .186 2.59 .339 -.052 1 18 DV09b 1624 2002 379 16 3 .650 .30 .75 .122 .810 .193 2.77 .320 -.032 5 19 DV10a 1623 1847 225 9 0 .563 .28 .99 .184 .892 .222 2.76 .455 -.016 1 20 DV10b 1623 1833 211 9 2 .558 .27 .91 .185 .896 .234 3.01 .470 .008 2 21 DV12a 1695 2001 307 13 0 .668 .31 1.01 .145 .740 .240 2.49 .270 -.018 1 22 DV12b 1653 2001 349 14 0 .638 .44 1.09 .147 .692 .196 2.77 .342 -.040 1 23 DV13a 1719 2002 284 12 0 .612 .35 1.19 .223 .879 .231 2.80 .401 -.012 1 24 DV13b 1794 2002 209 9 0 .685 .29 .69 .110 .749 .210 2.66 .379 .013 2 25 DV14 1646 2002 357 15 0 .636 .29 .98 .202 .864 .268 2.74 .392 .012 1 26 DV15 1710 2002 293 12 1 .670 .47 1.16 .173 .627 .248 2.67 .390 -.009 2 27 DV16 1665 2002 338 14 0 .585 .40 1.91 .296 .907 .203 2.69 .476 -.047 2 28 DV17 1696 2002 307 13 0 .670 .31 1.11 .197 .889 .241 2.60 .303 -.015 2 29 DV18a 1709 2002 294 12 3 .721 .34 .99 .192 .831 .251 2.68 .401 -.075 2 30 DV18b 1664 1992 329 13 0 .637 .39 1.46 .266 .854 .281 2.65 .411 -.029 2 31 DV19a 1728 2002 275 11 0 .718 .45 .99 .204 .814 .216 2.58 .318 -.048 4 32 DV19b 1634 2002 369 15 3 .616 .35 1.09 .229 .886 .219 2.93 .393 -.038 2 33 DV20a 1661 2002 342 14 0 .666 .34 1.02 .175 .885 .201 2.68 .391 -.037 1 34 DV20b 1645 2002 358 15 0 .678 .32 .89 .171 .862 .205 2.68 .416 -.055 3 35 DV21a 1810 2002 193 8 1 .629 .59 1.62 .337 .868 .215 2.63 .374 .007 2 36 DV21b 1856 1999 144 5 0 .641 .71 1.97 .284 .750 .191 2.42 .300 -.050 1 37 DV22a 1532 2002 471 19 2 .563 .25 .71 .115 .774 .233 2.89 .488 -.035 2 38 DV22b 1548 1989 442 18 1 .616 .26 .76 .130 .786 .243 2.73 .321 -.016 1 39 DV24b 1619 2002 384 16 0 .621 .39 1.34 .249 .894 .206 2.61 .374 -.035 1 40 DV25a 1477 1826 350 14 2 .556 .25 1.03 .175 .863 .260 2.73 .350 -.031 2 41 DV25b 1477 1822 346 13 1 .531 .29 1.41 .182 .847 .252 2.71 .384 -.017 1 42 DV27a 1736 2002 267 11 0 .589 .43 1.00 .180 .799 .206 2.60 .373 -.004 1 43 DV27b 1714 2002 289 12 0 .639 .47 .82 .124 .699 .166 2.42 .283 -.035 1 44 DV28a 1692 1996 305 12 1 .625 .59 1.58 .278 .829 .195 2.77 .463 -.078 1 45 DV29a 1425 1906 482 19 3 .529 .34 .93 .173 .812 .232 2.83 .393 -.014 2 46 DV29b 1405 1907 503 20 3 .542 .36 1.05 .174 .804 .235 2.77 .338 .004 2 47 DV30 1624 1953 330 14 0 .681 .47 1.35 .278 .868 .233 2.77 .404 -.037 2 48 DV31 1760 2002 243 10 1 .533 .39 .94 .138 .719 .201 2.57 .318 .012 1 PART 7: DESCRIPTIVE STATISTICS: Death Valley 12:05 Fri 13 Jan 2006 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 DV32 1660 1908 249 10 2 .577 .48 1.09 .202 .800 .210 2.82 .439 -.043 2 50 DV?a 1358 1833 476 19 1 .543 .22 .72 .118 .866 .208 2.63 .380 -.018 1 51 DV?b 1358 1820 463 18 2 .551 .23 .83 .156 .899 .215 2.72 .382 -.045 1 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 16663 675 46 .616 .35 1.97 .182 .810 .225 3.01 .384 -.028