Rock Glacier, Alaska - AK024 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 : AK024.CRN Measurement file name : AK024.RWL Date checked : 10MAR05 Checked by : H. ADAMS AND J. LUKAS Beginning year : 1514 Ending year : 1992 Principal investigators: Greg Wiles, Parker E. Calkin Site name : Rock Glacier Site location : Alaska Species information : TSME MOUNTAIN HEMLOCK Latitude : 6004 Longitude : -14850 Elevation : 420M Series intercorrelation: 0.608 Avg mean sensitivity : 0.349 Avg standard deviation : 0.296 Avg autocorrelation : 0.681 Number dated series : 21 Segment length tested : 50 Number problem segments: 10 Pct problem segments : 4.95 PART 5: CORRELATION OF SERIES BY SEGMENTS: ak024.rwl 13:35 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 1525 1550 1575 1600 1625 1650 1675 1700 1725 1750 1775 1800 1825 1850 1875 1900 1925 1950 1574 1599 1624 1649 1674 1699 1724 1749 1774 1799 1824 1849 1874 1899 1924 1949 1974 1999 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 RG01SW 1599 1990 .19B .25A .40 .50 .67 .71 .73 .59 .70 .80 .84 .85 .69 .64 .54 .56 2 RG01SE 1673 1990 .66 .66 .73 .72 .58 .55 .77 .83 .80 .70 .65 .70 .70 3 RG02SE 1579 1989 .50 .41 .40 .58 .69 .67 .46 .37B .64 .82 .76 .64 .52 .49 .63 .72 4 RG03NE 1747 1990 .62 .63 .71 .89 .78 .65 .57 .69 .85 .80 5 RG51NE 1514 1751 .35 .49 .32A .21B .28A .39 .48 .35 .37 6 RG51NE 1869 1990 .45 .44 .58 .63 .59 7 RG58SE 1768 1991 .64 .72 .82 .72 .62 .64 .71 .80 .74 8 RG62NE 1785 1991 .36 .46 .71 .65 .59 .66 .76 .73 9 RG62NW 1899 1991 .76 .77 .61 .59 10 RG64NW 1781 1938 .71 .65 .58 .44 .51 .57 11 RG66NE 1733 1898 .60 .58 .58 .67 .61 .54 12 RG68NE 1781 1907 .51 .75 .74 .72 .66 13 RG68NW 1793 1989 .71 .77 .78 .78 .75 .42 .34 .28A 14 RG72NE 1806 1991 .44 .59 .68 .70 .68 .72 .54 15 RG74NW 1850 1990 .71 .69 .62 .62 .70 16 RG76NW 1707 1991 .51 .58 .63 .69 .82 .76 .75 .74 .72 .74 .67 17 RG78SW 1613 1992 .35 .31A .54 .54 .41 .49 .63 .73 .81 .78 .64 .58 .67 .74 .77 18 RG80SW 1534 1990 .36 .53 .46 .58 .54 .58 .62 .61 .66 .63 .74 .79 .72 .31A .36 .75 .87 .86 19 RG84SW 1669 1990 .78 .78 .78 .67 .59 .63 .81 .89 .80 .69 .71 .70 .74 20 RG84SE 1611 1991 .37B .41 .66 .74 .74 .65 .60 .70 .84 .88 .73 .68 .73 .69 .77 21 RG86NE 1920 1991 .51 .57 .55 Av segment correlation .35 .51 .37 .36 .39 .59 .65 .61 .59 .59 .65 .74 .75 .65 .63 .64 .68 .66 PART 7: DESCRIPTIVE STATISTICS: ak024.rwl 13:35 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 RG01SW 1599 1990 392 16 2 .596 .44 1.40 .243 .658 .370 2.66 .408 -.001 1 2 RG01SE 1673 1990 318 13 0 .685 .47 1.20 .229 .656 .323 2.69 .392 .016 1 3 RG02SE 1579 1989 411 16 1 .588 .53 1.42 .267 .752 .298 2.78 .370 -.011 3 4 RG03NE 1747 1990 244 10 0 .723 .66 2.31 .339 .583 .397 2.70 .465 -.006 1 5 RG51NE 1514 1751 238 9 3 .357 .51 1.99 .393 .850 .283 2.51 .348 .001 2 6 RG51NE 1869 1990 122 5 0 .537 .52 1.17 .222 .531 .323 2.61 .442 -.025 3 7 RG58SE 1768 1991 224 9 0 .677 .66 1.76 .291 .541 .362 2.90 .447 -.015 1 8 RG62NE 1785 1991 207 8 0 .606 .68 2.35 .311 .678 .280 2.74 .431 -.030 4 9 RG62NW 1899 1991 93 4 0 .645 .50 1.55 .247 .693 .323 2.51 .423 -.038 1 10 RG64NW 1781 1938 158 6 0 .601 .44 1.76 .340 .772 .464 2.57 .401 -.102 1 11 RG66NE 1733 1898 166 6 0 .584 .58 2.57 .374 .804 .278 2.76 .474 -.046 1 12 RG68NE 1781 1907 127 5 0 .601 .43 1.22 .257 .644 .418 2.74 .439 -.046 1 13 RG68NW 1793 1989 197 8 1 .550 .44 2.83 .353 .757 .383 2.62 .366 -.003 1 14 RG72NE 1806 1991 186 7 0 .552 .58 1.92 .289 .678 .310 2.58 .378 .012 1 15 RG74NW 1850 1990 141 5 0 .658 1.18 3.33 .533 .582 .335 2.68 .417 .072 1 16 RG76NW 1707 1991 285 11 0 .666 .64 2.15 .343 .744 .282 2.73 .492 -.012 1 17 RG78SW 1613 1992 380 15 1 .597 .46 2.46 .347 .740 .433 2.71 .398 .004 6 18 RG80SW 1534 1990 457 18 1 .581 .43 1.59 .244 .658 .365 2.71 .338 .019 1 19 RG84SW 1669 1990 322 13 0 .666 .45 2.01 .227 .593 .375 2.61 .328 -.049 1 20 RG84SE 1611 1991 381 15 1 .640 .50 2.01 .270 .661 .371 2.62 .346 -.039 1 21 RG86NE 1920 1991 72 3 0 .538 .69 1.68 .265 .602 .255 2.41 .383 -.062 3 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 5121 202 10 .608 .54 3.33 .296 .681 .349 2.90 .396 -.012