Wolverine Glacier, Alaska - AK030 Additional Site Information Greg Wiles and Parker E. Calkin Detrending Method: Negative exponontial or linear regression with negative or 0 slope Purpose of Collection: Climatology - temperature analyses Cores located at the Tree Ring Lab, Lamont-Doherty Earth Observatory Reference: Wiles, G. C., D'Arrigo, R.D. and Jacoby, G.C., 1998, Gulf of Alaska atmosphere-ocean variability over recent centuries inferred from coastal tree-ring records: Climatic Change 38, 289-306. COFECHA output: Chronology file name : AK030.CRN Measurement file name : AK030.RWL Date checked : 10MAR05 Checked by : H. ADAMS AND J. LUKAS Beginning year : 1247 Ending year : 1991 Principal investigators: Greg Wiles, Parker E. Calkin Site name : Wolverine Glacier Site location : Alaska Species information : TSME MOUNTAIN HEMLOCK Latitude : 6022 Longitude : -14854 Elevation : 400M Series intercorrelation: 0.587 Avg mean sensitivity : 0.318 Avg standard deviation : 0.249 Avg autocorrelation : 0.671 Number dated series : 22 Segment length tested : 50 Number problem segments: 3 Pct problem segments : 1.46 PART 5: CORRELATION OF SERIES BY SEGMENTS: ak030.rwl 13:37 Thu 10 Mar 2005 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 1400 1425 1450 1475 1500 1525 1550 1575 1600 1625 1650 1675 1700 1725 1750 1775 1800 1825 1850 1875 1449 1474 1499 1524 1549 1574 1599 1624 1649 1674 1699 1724 1749 1774 1799 1824 1849 1874 1899 1924 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 WV01SW 1648 1877 .64 .66 .67 .64 .65 .62 .54 .67 .81 .82 2 WV03SW 1684 1991 .51 .52 .50 .49 .44 .46 .64 .58 .53 3 WV04NW 1734 1991 .47 .53 .50 .49 .35 .52 .66 4 WV05SW 1540 1893 .34 .37 .51 .44 .43 .67 .73 .68 .66 .66 .62 .65 .74 .62 5 WV06NE 1605 1866 .70 .70 .80 .63 .61 .59 .60 .70 .74 .77 6 WV07SE 1890 1991 .67 7 WV10NE 1723 1872 .50 .49 .65 .71 .77 .79 8 WV16NW 1781 1991 .66 .69 .71 .77 .59 9 WV20NE 1644 1991 .53 .55 .66 .70 .64 .47 .51 .76 .85 .83 .76 10 WV21SE 1412 1613 .48 .45 .44 .44 .53 .66 .61 .42 11 WV21SN 1848 1989 .77 .78 .59 12 WW24SW 1714 1991 .75 .76 .70 .63 .66 .44 .43 .65 13 WV32NE 1764 1990 .56 .64 .79 .80 .71 .55 14 WV38SW 1839 1990 .78 .79 .58 15 WV40SW 1702 1990 .51 .47 .59 .59 .36 .30A .54 .73 16 WV42SE 1592 1701 .50 .53 .59 .51 .47 17 WV42SE 1699 1990 .42 .44 .78 .73 .69 .80 .87 .77 .65 18 WV46SE 1733 1852 .57 .55 .46 .67 .66 19 WV46NE 1730 1872 .55 .50 .49 .68 .67 20 WV52NW 1869 1990 .62 .59 21 WV66NE 1680 1991 .55 .62 .44 .48 .48 .73 .86 .80 .65 22 WW70NW 1247 1991 .48 .45 .44 .44 .51 .53 .34 .33A .36 .49 .60 .61 .72 .70 .63 .70 .55 .50 .71 .78 Av segment correlation .48 .45 .44 .44 .52 .51 .44 .44 .51 .56 .63 .58 .61 .59 .58 .59 .65 .68 .69 .64 PART 5: CORRELATION OF SERIES BY SEGMENTS: ak030.rwl 13:37 Thu 10 Mar 2005 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 1900 1925 1950 1949 1974 1999 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 2 WV03SW 1684 1991 .77 .79 .68 3 WV04NW 1734 1991 .60 .79 .71 6 WV07SE 1890 1991 .69 .79 .71 8 WV16NW 1781 1991 .40 .58 .66 9 WV20NE 1644 1991 .76 .82 .57 11 WV21SN 1848 1989 .56 .64 .51 12 WW24SW 1714 1991 .62 .73 .70 13 WV32NE 1764 1990 .50 .55 .41 14 WV38SW 1839 1990 .52 .67 .43 15 WV40SW 1702 1990 .60 .62 .60 17 WV42SE 1699 1990 .78 .82 .70 20 WV52NW 1869 1990 .61 .61 .48B 21 WV66NE 1680 1991 .67 .76 .73 22 WW70NW 1247 1991 .78 .73 .56 Av segment correlation .63 .71 .60 PART 7: DESCRIPTIVE STATISTICS: ak030.rwl 13:37 Thu 10 Mar 2005 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 WV01SW 1648 1877 230 10 0 .615 .66 1.37 .256 .665 .261 2.58 .330 -.025 1 2 WV03SW 1684 1991 308 12 0 .556 .79 1.42 .233 .501 .251 2.67 .394 -.019 5 3 WV04NW 1734 1991 258 10 0 .539 .70 2.33 .400 .772 .302 2.63 .330 -.010 5 4 WV05SW 1540 1893 354 14 0 .543 .36 1.35 .193 .744 .295 2.76 .375 -.032 1 5 WV06NE 1605 1866 262 10 0 .674 .37 1.00 .180 .622 .366 2.67 .440 -.065 1 6 WV07SE 1890 1991 102 4 0 .695 .62 1.56 .323 .755 .271 2.67 .573 .069 1 7 WV10NE 1723 1872 150 6 0 .670 .44 1.14 .174 .442 .358 2.54 .500 -.033 1 8 WV16NW 1781 1991 211 8 0 .606 1.04 2.15 .368 .667 .240 2.52 .289 -.041 1 9 WV20NE 1644 1991 348 14 0 .660 .63 1.81 .335 .731 .322 2.64 .406 .009 1 10 WV21SE 1412 1613 202 8 0 .472 .30 .62 .149 .678 .334 2.54 .348 -.010 1 11 WV21SN 1848 1989 142 6 0 .613 .43 1.54 .313 .852 .355 2.66 .416 -.043 2 12 WW24SW 1714 1991 278 11 0 .606 .55 1.71 .323 .748 .314 2.67 .393 .000 1 13 WV32NE 1764 1990 227 9 0 .598 .37 1.47 .209 .660 .412 2.75 .368 -.053 1 14 WV38SW 1839 1990 152 6 0 .560 .59 1.39 .267 .535 .382 2.62 .403 -.025 1 15 WV40SW 1702 1990 289 11 1 .505 .99 2.33 .465 .851 .220 2.84 .381 -.005 1 16 WV42SE 1592 1701 110 5 0 .464 .25 1.00 .178 .745 .344 2.83 .450 -.033 2 17 WV42SE 1699 1990 292 12 0 .705 .64 1.89 .314 .615 .354 2.84 .456 -.039 1 18 WV46SE 1733 1852 120 5 0 .612 .34 1.00 .143 .456 .334 2.73 .457 -.026 2 19 WV46NE 1730 1872 143 5 0 .588 .30 .91 .141 .355 .397 2.67 .523 .015 2 20 WV52NW 1869 1990 122 5 1 .577 .49 .96 .189 .594 .293 2.62 .458 .032 1 21 WV66NE 1680 1991 312 12 0 .644 .35 .76 .139 .645 .283 2.61 .378 -.018 1 22 WW70NW 1247 1991 745 23 1 .503 .30 .93 .169 .726 .351 2.68 .339 .001 1 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 5357 206 3 .587 .52 2.33 .249 .671 .318 2.84 .392 -.017