Exit Glacier, Alaska - AK016 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 : AK016.CRN Measurement file name : AK016.RWL Date checked : 10MAR05 Checked by : H. ADAMS AND J. LUKAS Beginning year : 1574 Ending year : 1988 Principal investigators: Greg Wiles, Parker E. Calkin Site name : Exit Glacier Site location : Alaska Species information : PCSI SITKA SPRUCE Latitude : 6012 Longitude : -14935 Elevation : 480M Series intercorrelation: 0.560 Avg mean sensitivity : 0.230 Avg standard deviation : 0.471 Avg autocorrelation : 0.801 Number dated series : 27 Segment length tested : 50 Number problem segments: 17 Pct problem segments : 5.78 PART 5: CORRELATION OF SERIES BY SEGMENTS: ak016.rwl 13:32 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 1600 1625 1650 1675 1700 1725 1750 1775 1800 1825 1850 1875 1900 1925 1950 1649 1674 1699 1724 1749 1774 1799 1824 1849 1874 1899 1924 1949 1974 1999 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 EGB1SE 1785 1988 .34B .48 .56 .54 .53 .62 .60 .61 2 EG01NW 1800 1988 .49 .55 .57 .64 .67 .55 .51 3 EG02NW 1787 1988 .56 .59 .55 .53 .55 .54 .63 .66 4 EG04NE 1796 1988 .65 .70 .67 .69 .72 .72 .78 .64 5 EG04SW 1785 1988 .34B .51 .50 .57 .66 .68 .71 .73 6 EG05SE 1785 1988 .61 .68 .46 .44 .45 .43 .55 .53 7 EG05NE 1798 1988 .40 .38 .31B .47 .54 .41 .46 .48 8 EG07SE 1655 1988 .66 .77 .84 .59 .51 .58 .69 .72 .69 .63 .55 .68 .63 9 EG07NE 1648 1988 .49 .59 .75 .80 .54 .57 .54 .68 .75 .66 .68 .64 .64 .66 10 EG08NE 1739 1988 .35B .33B .56 .49 .45 .27A .15B .42 .51 .52 11 EG08SW 1780 1988 .63 .50 .48 .52 .48 .57 .74 .69 12 EG09SW 1658 1988 .28A .54 .34 .37 .33 .30B .60 .52 .39 .54 .52 .56 .45 13 EG10NW 1574 1988 .67 .50 .60 .75 .52 .41 .66 .63 .34 .34B .49 .53 .57 .66 .54 14 EG10SW 1603 1988 .55 .45 .66 .72 .67 .63 .67 .54 .69 .65 .61 .68 .59 .59 .61 15 EG11SW 1747 1988 .69 .68 .70 .66 .55 .55 .58 .54 .63 .65 16 EG11NE 1712 1988 .57 .57 .52 .62 .61 .60 .65 .67 .65 .46 .49 17 EG12NE 1796 1988 .65 .69 .70 .66 .51 .47 .53 .54 18 EG15NW 1651 1988 .61 .77 .72 .75 .65 .45 .56 .65 .69 .80 .67 .58 .58 19 EG15NE 1658 1988 .67 .72 .70 .73 .81 .69 .53 .38B .40 .68 .66 .73 .62 20 EG16NE 1681 1988 .66 .58 .47 .54 .72 .68 .56 .64 .37 .34 .65 .60 21 EG16SE 1691 1988 .51 .51 .56 .66 .70 .66 .44 .45 .54 .46 .56 .60 22 EG17NW 1628 1986 .25A .39 .39 .36B .57 .56 .49 .57 .48 .25B .25B .43 .49 .47 23 EG18NE 1690 1988 .54 .54 .51 .49 .54 .76 .81 .65 .57 .55 .38B .36B 24 EG18NW 1726 1988 .69 .63 .59 .72 .70 .57 .65 .69 .67 .66 25 EG19NW 1730 1988 .40 .35 .38 .53 .49 .45 .56 .49 .48 .49 26 EG20SW 1667 1988 .81 .78 .66 .56 .59 .53 .66 .64 .53 .67 .72 .52 .58 27 EG20NE 1670 1988 .63 .67 .62 .64 .54 .43 .50 .48 .60 .71 .53 .55 .36 Av segment correlation .61 .42 .59 .66 .60 .56 .56 .54 .59 .56 .54 .57 .56 .59 .57 PART 7: DESCRIPTIVE STATISTICS: ak016.rwl 13:32 Thu 10 Mar 2005 Page 8 ------------------------------------------------------------------------------------------------------------------------------------ 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 EGB1SE 1785 1988 204 8 1 .533 1.21 3.42 .544 .828 .213 2.73 .446 .003 5 2 EG01NW 1800 1988 189 7 0 .549 1.81 3.57 .590 .704 .206 2.75 .442 .056 2 3 EG02NW 1787 1988 202 8 0 .573 1.45 2.85 .586 .867 .157 2.55 .337 -.036 2 4 EG04NE 1796 1988 193 8 0 .664 1.42 3.21 .578 .735 .214 2.54 .322 .005 1 5 EG04SW 1785 1988 204 8 1 .575 1.22 3.49 .472 .695 .205 2.85 .374 .000 1 6 EG05SE 1785 1988 204 8 0 .513 .70 1.44 .285 .755 .233 2.61 .388 -.004 4 7 EG05NE 1798 1988 191 8 1 .441 .96 3.43 .501 .713 .263 2.76 .434 -.002 4 8 EG07SE 1655 1988 334 13 0 .633 1.03 2.26 .384 .670 .232 2.62 .375 -.011 1 9 EG07NE 1648 1988 341 14 0 .633 1.05 2.40 .379 .673 .228 2.73 .394 .007 1 10 EG08NE 1739 1988 250 10 4 .398 .94 2.73 .420 .812 .219 2.58 .347 -.039 3 11 EG08SW 1780 1988 209 8 0 .570 .76 1.70 .281 .672 .230 2.71 .390 .006 1 12 EG09SW 1658 1988 331 13 2 .421 .74 1.57 .258 .569 .266 2.61 .373 -.019 7 13 EG10NW 1574 1988 415 15 1 .540 .79 3.04 .450 .836 .245 2.58 .353 -.011 1 14 EG10SW 1603 1988 386 15 0 .620 .69 2.01 .317 .779 .243 2.52 .300 -.010 1 15 EG11SW 1747 1988 242 10 0 .617 .99 2.69 .540 .892 .196 2.57 .347 -.047 3 16 EG11NE 1712 1988 277 11 0 .582 1.43 4.91 .960 .911 .234 2.62 .339 -.043 2 17 EG12NE 1796 1988 193 8 0 .590 1.85 4.60 .807 .875 .185 2.57 .336 -.020 3 18 EG15NW 1651 1988 338 13 0 .630 .92 3.10 .568 .899 .211 2.73 .391 -.046 1 19 EG15NE 1658 1988 331 13 1 .627 .82 3.19 .483 .879 .212 2.86 .442 -.050 1 20 EG16NE 1681 1988 308 12 0 .549 .96 2.15 .408 .782 .232 2.66 .391 -.033 1 21 EG16SE 1691 1988 298 12 0 .549 .91 2.06 .349 .761 .212 2.63 .328 -.040 1 22 EG17NW 1628 1986 359 14 4 .410 .77 2.26 .416 .859 .259 2.55 .348 -.040 1 23 EG18NE 1690 1988 299 12 2 .568 .91 3.70 .674 .910 .243 2.68 .400 -.025 5 24 EG18NW 1726 1988 263 10 0 .656 .83 2.65 .525 .877 .261 2.71 .376 .013 1 25 EG19NW 1730 1988 259 10 0 .469 1.16 2.86 .586 .893 .219 2.80 .501 .008 1 26 EG20SW 1667 1988 322 13 0 .630 .56 1.89 .362 .875 .266 2.68 .406 -.030 1 27 EG20NE 1670 1988 319 13 0 .535 .57 2.13 .338 .838 .250 2.59 .348 .001 1 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 7461 294 17 .560 .97 4.91 .471 .801 .230 2.86 .377 -.017