Grays Creek Pass Recollection, Canada - cana308 Additional Information M. Colenutt R. Colenutt B. Luckman E. Watson G. Pederson Purpose of Collection: Climatology - Snowpack reconstruction Reference: Pederson, G.T., S.T. Gray, C.A. Woodhouse, J.L. Betancourt, D.B. Fagre, J.S. Littell, E. Watson, B.H. Luckman, and L.J. Graumlich. 2011. The unusual nature of recent snowpack declines in the North American Cordillera. Sciencexpress, Published online 9 June 2011. DOI: 10.1126/science.1201570 COFECHA output: Chronology file name : CANA308.CRN Measurement file name : CANA308.RWL Date checked : 07JUN11 Checked by : B. Bauer Beginning year : 799 Ending year : 2005 Principal investigators: M. Colenutt R. Colenutt B. Luckman E. Watson G. Pederson Site name : Grays Creek Pass Recollection Site location : Canada Species information : LALY SUBALPINE LARCH Latitude : 4935 Longitude : -11641 Elevation : 2197M Series intercorrelation: 0.727 Avg mean sensitivity : 0.420 Avg standard deviation : 0.628 Avg autocorrelation : 0.602 Number dated series : 69 Segment length tested : 50 Number problem segments: 16 Pct problem segments : 1.60 PART 5: CORRELATION OF SERIES BY SEGMENTS: Grays Creek Pass recollection 16:37 Tue 07 Jun 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 800 825 850 875 900 925 950 975 1000 1025 1050 1075 1100 1125 1150 1175 1200 1225 1250 1275 849 874 899 924 949 974 999 1024 1049 1074 1099 1124 1149 1174 1199 1224 1249 1274 1299 1324 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 40 G9308A 1178 1579 .56 .57 .57 .64 .74 41 G9308B 1175 1621 .49 .51 .61 .69 .77 42 G9309A 1121 1658 .40 .38 .47 .69 .70 .77 .74 .77 43 G9309B 1121 1642 .61 .63 .77 .75 .62 .66 .80 .87 45 G9314 1249 1507 .55 .53 .61 46 G9315A 799 1147 .88 .87 .91 .94 .90 .78 .59 .53 .71 .78 .80 .85 .78 47 G9315B 822 1135 .89 .87 .87 .91 .92 .82 .64 .60 .78 .87 .86 .79 .77 48 G9316A 965 1698 .55 .50 .61 .68 .65 .69 .77 .81 .74 .73 .65 .52 .65 .74 49 G9316B 965 1681 .43 .46 .58 .74 .76 .80 .82 .88 .86 .79 .67 .62 .70 .85 57 GP401A 871 1096 .72 .75 .81 .73 .74 .57 .56 .72 .77 62 GP413A 948 1646 .54 .58 .74 .83 .79 .73 .64 .72 .82 .74 .74 .75 .56 .51 .68 63 GP413C 1020 1175 .67 .78 .68 .65 .75 .76 .76 64 GP413D 1020 1181 .75 .81 .79 .73 .74 .71 .69 65 GP417A 1198 1689 .46 .50 .52 .83 .76 66 GP417B 1198 1670 .40 .37 .55 .68 .70 68 G9601A 1216 1769 .59 .57 .72 .77 69 G9601B 1218 1810 .53 .51 .62 .85 Av segment correlation .88 .87 .83 .87 .88 .72 .59 .57 .69 .77 .75 .74 .71 .71 .72 .62 .59 .58 .68 .76 PART 5: CORRELATION OF SERIES BY SEGMENTS: Grays Creek Pass recollection 16:37 Tue 07 Jun 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 1300 1325 1350 1375 1400 1425 1450 1475 1500 1525 1550 1575 1600 1625 1650 1675 1700 1725 1750 1775 1349 1374 1399 1424 1449 1474 1499 1524 1549 1574 1599 1624 1649 1674 1699 1724 1749 1774 1799 1824 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 G0654N 1732 1988 .51 .63 .45 2 G0657N1 1619 1742 .53 .60 .71 .36 .23B 3 G0657N2 1760 1992 .73 .81 4 G0670E 1587 2001 .70 .71 .48 .49 .56 .66 .76 .53 .37 5 G0653E 1722 2004 .54 .51 .69 .74 6 G0656E 1665 2005 .53 .52 .65 .59 .58 .72 7 G0672A 1797 2005 .54 8 G0652A 1797 2005 .61 9 G0676A 1560 2005 .44 .60 .49 .66 .79 .37 .28A .54 .62 .82 10 G0676B2 1552 1756 .58 .69 .68 .62 .74 .75 .66 .66 11 G0687A 1725 2005 .53 .72 .75 12 G0652B 1560 2005 .71 .67 .69 .61 .64 .74 .75 .71 .79 .83 13 G0682B 1541 2005 .32B .37 .61 .64 .66 .70 .79 .83 .75 .78 .75 14 G0683A 1661 2005 .47 .34 .48 .79 .83 .79 15 G0683B 1687 2005 .26A .28A .11B .50 .62 17 G0685A 1791 2005 .74 18 G0685B 1659 2005 .77 .77 .42 .33B .80 .86 19 G9203E 1604 1975 .49 .67 .75 .72 .70 .61 .72 .81 20 G9203N 1590 1985 .66 .65 .69 .75 .79 .74 .68 .84 .90 22 G9215N 1688 1991 .87 .87 .78 .88 .89 23 G9215W 1606 1956 .54 .53 .79 .87 .89 .85 .91 .91 24 G9217N 1542 1991 .72 .76 .72 .71 .75 .65 .57 .74 .80 .84 .85 25 G9217W 1550 1991 .85 .82 .73 .69 .82 .83 .67 .67 .78 .81 26 G9219N 1370 1991 .47 .48 .62 .69 .74 .74 .78 .72 .74 .80 .68 .63 .81 .80 .69 .63 .72 .81 27 G9219W 1438 1991 .78 .75 .83 .86 .81 .83 .82 .74 .73 .80 .75 .82 .74 .70 .80 28 G9219H 1421 1991 .58 .58 .64 .80 .92 .87 .87 .85 .75 .69 .78 .86 .79 .65 .70 .79 29 G9221W 1744 1991 .50 .48 .65 30 G9222S 1735 1991 .54 .60 .61 31 G9223S 1695 1991 .53 .56 .73 .76 .78 32 G9223W 1687 1991 .54 .68 .81 .82 .83 33 G9301A 1351 1765 .34 .67 .82 .83 .82 .80 .83 .72 .77 .87 .69 .74 .82 .80 .79 .67 34 G9301B 1360 1760 .59 .70 .83 .86 .84 .82 .85 .83 .84 .78 .77 .68 .69 .80 .84 .65 35 G9302 1360 1679 .63 .64 .69 .80 .87 .87 .84 .79 .81 .77 .75 .70 .71 36 G9304A 1344 1955 .57 .60 .67 .65 .66 .72 .81 .88 .86 .83 .79 .76 .74 .77 .80 .77 .68 .66 .69 37 G9304B 1345 1962 .51 .51 .56 .65 .69 .75 .83 .81 .79 .83 .74 .63 .61 .74 .91 .86 .65 .68 .79 38 G9306 1386 1726 .37 .54 .67 .78 .78 .76 .75 .84 .82 .73 .72 .77 .84 .84 39 G9307 1467 1699 .78 .76 .87 .87 .81 .80 .78 .75 .70 40 G9308A 1178 1579 .86 .82 .85 .89 .87 .83 .86 .89 .92 .88 .88 41 G9308B 1175 1621 .86 .86 .84 .84 .85 .80 .71 .69 .78 .74 .67 .42 42 G9309A 1121 1658 .80 .78 .85 .83 .72 .72 .84 .85 .90 .88 .88 .75 .44 .32A 43 G9309B 1121 1642 .90 .87 .76 .72 .80 .86 .77 .77 .52 .45 .65 .65 .48 44 G9313A 1368 1669 .39 .46 .62 .65 .72 .77 .76 .68 .62 .66 .58 .67 45 G9314 1249 1507 .74 .65 .67 .80 .80 .68 .64 .66 48 G9316A 965 1698 .80 .80 .79 .78 .79 .74 .71 .72 .78 .87 .86 .67 .57 .77 .78 49 G9316B 965 1681 .86 .80 .73 .75 .83 .75 .62 .59 .71 .80 .80 .81 .65 .67 .80 50 G9317A 1426 1702 .59 .80 .81 .78 .82 .80 .67 .67 .74 .73 .72 51 G9317B 1433 1706 .77 .83 .87 .85 .86 .83 .73 .68 .79 .81 .80 53 G9321W 1770 1992 .70 .78 54 G9323S 1640 1992 .75 .75 .76 .76 .69 .69 .75 55 G9325N 1758 1992 .69 .85 56 G9325W 1784 1992 .71 58 GP402N 1688 1993 .85 .90 .81 .89 .90 59 GP402S 1729 1993 .83 .87 .91 60 GP403A 1570 1896 .52 .53 .68 .79 .86 .83 .83 .82 .81 .81 61 GP407A 1410 1737 .50 .52 .52 .63 .65 .74 .79 .55 .50 .76 .81 .79 .78 62 GP413A 948 1646 .78 .70 .58 .73 .75 .64 .57 .65 .67 .73 .71 .63 .65 65 GP417A 1198 1689 .77 .85 .78 .75 .75 .74 .81 .83 .79 .79 .81 .75 .75 .78 .75 66 GP417B 1198 1670 .77 .84 .73 .78 .83 .81 .83 .84 .85 .83 .77 .79 .74 .76 67 GP418A 1308 1732 .56 .40 .37 .61 .72 .78 .75 .59 .53 .75 .87 .80 .74 .79 .85 .76 .69 68 G9601A 1216 1769 .76 .66 .66 .79 .80 .81 .77 .86 .86 .77 .72 .69 .73 .67 .66 .74 .77 .70 69 G9601B 1218 1810 .87 .84 .78 .72 .70 .77 .75 .83 .90 .80 .74 .76 .69 .62 .58 .61 .79 .80 .78 .70 Av segment correlation .79 .73 .65 .69 .73 .73 .75 .77 .79 .77 .75 .72 .66 .68 .73 .70 .69 .66 .73 .76 PART 5: CORRELATION OF SERIES BY SEGMENTS: Grays Creek Pass recollection 16:37 Tue 07 Jun 2011 Page 7 ----------------------------------------------------------------------------------------------------------------------------------- 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 1800 1825 1850 1875 1900 1925 1950 1975 1849 1874 1899 1924 1949 1974 1999 2024 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 G0654N 1732 1988 .42 .81 .82 .75 .65 .57 .64 3 G0657N2 1760 1992 .80 .71 .70 .75 .70 .57 .42 4 G0670E 1587 2001 .49 .78 .83 .76 .70 .65 .31B .32B 5 G0653E 1722 2004 .67 .51 .50 .50 .46 .52 .62 .59 6 G0656E 1665 2005 .75 .79 .73 .49 .70 .76 .60 .62 7 G0672A 1797 2005 .55 .61 .60 .74 .86 .67 .50 .54 8 G0652A 1797 2005 .61 .77 .65 .48 .56 .38 .17A .23A 9 G0676A 1560 2005 .81 .82 .67 .34B .47 .71 .71 .73 11 G0687A 1725 2005 .79 .81 .79 .82 .67 .58 .76 .76 12 G0652B 1560 2005 .81 .85 .85 .74 .68 .26B .32A .31A 13 G0682B 1541 2005 .71 .78 .73 .70 .72 .60 .63 .62 14 G0683A 1661 2005 .75 .83 .83 .77 .64 .62 .76 .77 15 G0683B 1687 2005 .67 .89 .87 .85 .73 .47 .54 .54 16 G0684B 1850 2005 .54 .78 .86 .83 .70 .71 17 G0685A 1791 2005 .69 .74 .83 .86 .84 .82 .73 .73 18 G0685B 1659 2005 .89 .89 .82 .79 .83 .82 .80 .80 19 G9203E 1604 1975 .86 .84 .80 .73 .74 .62 .62 20 G9203N 1590 1985 .89 .85 .83 .80 .76 .62 .54 21 G9204W 1843 1989 .41 .48 .78 .75 .69 .74 22 G9215N 1688 1991 .87 .86 .85 .85 .87 .86 .76 23 G9215W 1606 1956 .89 .81 .78 .83 .78 .78 24 G9217N 1542 1991 .86 .82 .78 .77 .79 .85 .85 25 G9217W 1550 1991 .75 .76 .80 .86 .88 .83 .72 26 G9219N 1370 1991 .72 .88 .92 .87 .87 .84 .82 27 G9219W 1438 1991 .73 .81 .88 .86 .84 .83 .81 28 G9219H 1421 1991 .78 .86 .59 .59 .82 .76 .70 29 G9221W 1744 1991 .79 .92 .74 .67 .81 .76 .65 30 G9222S 1735 1991 .63 .87 .86 .79 .68 .68 .73 31 G9223S 1695 1991 .75 .79 .82 .79 .68 .63 .69 32 G9223W 1687 1991 .82 .84 .81 .78 .62 .58 .78 36 G9304A 1344 1955 .74 .79 .76 .67 .68 .69 37 G9304B 1345 1962 .81 .85 .82 .77 .68 .66 52 G9321S 1803 1992 .81 .87 .87 .91 .92 .90 .88 53 G9321W 1770 1992 .86 .89 .89 .85 .80 .83 .82 54 G9323S 1640 1992 .82 .83 .82 .83 .82 .83 .82 55 G9325N 1758 1992 .86 .82 .74 .78 .84 .82 .84 56 G9325W 1784 1992 .70 .80 .81 .83 .82 .83 .88 58 GP402N 1688 1993 .87 .91 .85 .86 .88 .79 .69 59 GP402S 1729 1993 .90 .87 .85 .88 .87 .69 .61 60 GP403A 1570 1896 .73 .75 .83 Av segment correlation .76 .80 .77 .76 .75 .70 .67 .59 PART 7: DESCRIPTIVE STATISTICS: Grays Creek Pass recollection 16:37 Tue 07 Jun 2011 Page 16 ----------------------------------------------------------------------------------------------------------------------------------- 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 G0654N 1732 1988 257 10 0 .590 3.05 22.66 2.169 .508 .484 2.97 .469 -.004 1 2 G0657N1 1619 1742 124 5 1 .439 2.93 6.68 1.300 .543 .341 2.63 .450 -.014 1 3 G0657N2 1760 1992 233 9 0 .699 4.23 14.59 2.659 .400 .542 2.60 .376 .001 1 4 G0670E 1587 2001 415 17 2 .535 2.21 5.34 1.045 .131 .547 2.64 .387 .055 2 5 G0653E 1722 2004 283 12 0 .601 4.10 18.17 3.340 .762 .466 2.57 .386 .051 1 6 G0656E 1665 2005 341 14 0 .666 3.76 13.78 2.309 .581 .479 2.67 .358 .009 1 7 G0672A 1797 2005 209 9 0 .646 3.39 11.87 2.487 .746 .440 2.57 .395 .024 1 8 G0652A 1797 2005 209 9 2 .510 2.47 10.72 1.772 .574 .464 2.64 .457 -.035 1 9 G0676A 1560 2005 446 18 2 .589 4.26 13.50 2.115 .294 .506 2.61 .336 .035 2 10 G0676B2 1552 1756 205 8 0 .668 4.60 12.96 2.469 .397 .521 2.69 .439 .018 1 11 G0687A 1725 2005 281 11 0 .722 3.34 8.15 1.429 .456 .403 2.54 .331 .020 1 12 G0652B 1560 2005 446 18 3 .657 4.09 9.58 1.779 .283 .460 2.50 .337 .017 3 13 G0682B 1541 2005 465 19 1 .662 4.34 10.74 1.778 .480 .359 2.58 .367 -.003 8 14 G0683A 1661 2005 345 14 0 .707 4.28 13.03 2.232 .333 .521 2.62 .370 .019 1 15 G0683B 1687 2005 319 13 3 .554 4.40 13.65 2.241 .316 .518 2.64 .422 .000 1 16 G0684B 1850 2005 156 6 0 .701 7.12 18.25 3.699 .254 .533 2.56 .497 -.003 1 17 G0685A 1791 2005 215 9 0 .795 3.94 10.75 1.812 .515 .388 2.54 .348 -.020 2 18 G0685B 1659 2005 347 14 1 .758 4.07 12.28 2.060 .468 .426 2.63 .414 -.018 1 19 G9203E 1604 1975 372 15 0 .737 .38 1.01 .205 .599 .450 2.52 .333 -.025 1 20 G9203N 1590 1985 396 16 0 .765 .38 1.42 .254 .600 .515 2.57 .366 -.004 1 21 G9204W 1843 1989 147 6 0 .649 .87 1.98 .358 .688 .280 2.44 .335 .010 1 22 G9215N 1688 1991 304 12 0 .860 .37 .96 .176 .495 .453 2.48 .323 -.007 1 23 G9215W 1606 1956 351 14 0 .801 .54 1.39 .226 .604 .334 2.57 .347 -.003 1 24 G9217N 1542 1991 450 18 0 .765 .46 1.28 .219 .559 .397 2.65 .374 .004 1 25 G9217W 1550 1991 442 17 0 .804 .38 1.09 .163 .579 .346 2.49 .347 -.021 1 26 G9219N 1370 1991 622 25 0 .773 .37 1.12 .206 .494 .507 2.60 .369 -.018 1 27 G9219W 1438 1991 554 22 0 .791 .37 1.21 .231 .576 .566 2.57 .386 .015 1 28 G9219H 1421 1991 571 23 0 .762 .34 .96 .188 .462 .542 2.57 .345 -.007 1 29 G9221W 1744 1991 248 10 0 .716 .54 1.56 .298 .580 .510 2.56 .346 -.032 1 30 G9222S 1735 1991 257 10 0 .698 .48 1.72 .292 .722 .416 2.60 .384 -.030 1 31 G9223S 1695 1991 297 12 0 .713 .82 1.90 .298 .604 .271 2.41 .280 .009 1 32 G9223W 1687 1991 305 12 0 .735 .79 1.60 .263 .579 .266 2.56 .345 .022 1 33 G9301A 1351 1765 415 16 0 .745 .30 1.16 .222 .805 .410 2.59 .355 -.011 1 34 G9301B 1360 1760 401 16 0 .777 .30 1.07 .211 .810 .411 2.59 .355 -.013 1 35 G9302 1360 1679 320 13 0 .754 .38 1.07 .183 .684 .352 2.70 .405 -.054 1 36 G9304A 1344 1955 612 25 0 .759 .35 1.29 .201 .692 .400 2.58 .381 .003 2 37 G9304B 1345 1962 618 25 0 .748 .34 .99 .183 .680 .353 2.44 .255 -.008 2 38 G9306 1386 1726 341 14 0 .736 .34 1.27 .194 .559 .498 2.78 .436 -.011 1 39 G9307 1467 1699 233 9 0 .772 .58 1.65 .330 .604 .410 2.54 .393 -.010 1 40 G9308A 1178 1579 402 16 0 .785 .35 1.53 .259 .817 .391 2.48 .315 .009 1 41 G9308B 1175 1621 447 17 0 .698 .34 1.59 .266 .856 .364 2.48 .299 .004 1 42 G9309A 1121 1658 538 22 1 .714 .43 1.40 .274 .792 .412 2.54 .353 -.010 1 43 G9309B 1121 1642 522 21 0 .717 .39 1.65 .293 .828 .429 2.54 .341 -.027 1 44 G9313A 1368 1669 302 12 0 .655 .28 .75 .147 .637 .443 2.52 .303 -.007 1 45 G9314 1249 1507 259 11 0 .659 .53 2.23 .478 .858 .487 2.69 .320 -.003 1 46 G9315A 799 1147 349 13 0 .807 .51 1.83 .327 .742 .444 2.54 .352 -.004 1 47 G9315B 822 1135 314 13 0 .828 .55 2.18 .351 .760 .409 2.49 .321 .011 1 48 G9316A 965 1698 734 29 0 .719 .34 1.25 .231 .772 .427 2.48 .285 -.016 1 PART 7: DESCRIPTIVE STATISTICS: Grays Creek Pass recollection 16:37 Tue 07 Jun 2011 Page 17 ----------------------------------------------------------------------------------------------------------------------------------- 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 G9316B 965 1681 717 29 0 .742 .36 1.15 .197 .642 .461 2.60 .333 -.023 3 50 G9317A 1426 1702 277 11 0 .684 .51 1.79 .274 .727 .340 2.55 .320 -.001 1 51 G9317B 1433 1706 274 11 0 .760 .39 1.29 .196 .671 .355 2.50 .349 -.018 1 52 G9321S 1803 1992 190 7 0 .873 1.02 2.34 .388 .560 .319 2.52 .378 .007 1 53 G9321W 1770 1992 223 9 0 .820 .76 1.65 .324 .563 .355 2.52 .351 .002 1 54 G9323S 1640 1992 353 14 0 .807 .42 1.49 .246 .705 .396 2.56 .290 -.006 1 55 G9325N 1758 1992 235 9 0 .800 .84 1.83 .333 .577 .323 2.66 .369 -.018 1 56 G9325W 1784 1992 209 8 0 .785 .76 1.44 .265 .609 .264 2.50 .334 -.031 1 57 GP401A 871 1096 226 9 0 .684 .60 1.83 .283 .687 .309 2.63 .404 .003 1 58 GP402N 1688 1993 306 12 0 .859 .50 1.38 .269 .581 .454 2.60 .374 .008 1 59 GP402S 1729 1993 265 10 0 .837 .65 1.92 .310 .636 .387 2.46 .334 -.016 1 60 GP403A 1570 1896 327 13 0 .776 .43 1.11 .191 .604 .358 2.49 .338 .011 2 61 GP407A 1410 1737 328 13 0 .642 .38 .92 .184 .258 .548 2.48 .304 -.017 1 62 GP413A 948 1646 699 28 0 .703 .43 1.61 .268 .694 .469 2.66 .309 -.008 1 63 GP413C 1020 1175 156 7 0 .730 .52 1.21 .219 .496 .401 2.54 .359 -.057 1 64 GP413D 1020 1181 162 7 0 .760 .51 1.14 .230 .385 .480 2.49 .371 -.053 1 65 GP417A 1198 1689 492 20 0 .753 .38 .94 .174 .609 .371 2.57 .401 -.019 1 66 GP417B 1198 1670 473 19 0 .745 .29 1.24 .205 .813 .347 2.53 .344 -.011 1 67 GP418A 1308 1732 425 17 0 .700 .46 1.19 .190 .576 .310 2.49 .282 -.009 1 68 G9601A 1216 1769 554 22 0 .729 .39 .92 .150 .539 .315 2.60 .341 .010 2 69 G9601B 1218 1810 593 24 0 .737 .36 .97 .165 .677 .316 2.58 .352 .004 1 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 24903 998 16 .727 1.17 22.66 .628 .602 .420 2.97 .351 -.004