Dutch John Mountain, Utah - ut525 Additional Information Steve Gray Steve Jackson Julio Betancourt 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 : UT525.CRN Measurement file name : UT525.RWL Date checked : 07JUN11 Checked by : B. Bauer Beginning year : 1365 Ending year : 2001 Principal investigators: Steve Gray Steve Jackson Julio Betancourt Site name : Dutch John Mountain Site location : Utah Species information : PIED PINYON Latitude : 4058 Longitude : -10925 Elevation : 2190M Series intercorrelation: 0.830 Avg mean sensitivity : 0.438 Avg standard deviation : 0.111 Avg autocorrelation : 0.535 Number dated series : 73 Segment length tested : 50 Number problem segments: 2 Pct problem segments : 0.19 PART 5: CORRELATION OF SERIES BY SEGMENTS: Dutch John Mountain 16:54 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 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 rc7a 1388 2001 .87 .80 .83 .84 .77 .83 .87 .88 .88 .80 .80 .89 .92 .84 .84 .91 .88 .83 .81 3 rc22c 1493 2001 .82 .88 .80 .80 .82 .84 .83 .70 .78 .87 .92 .93 .90 .83 .83 4 rc16a 1749 2001 .88 .88 .91 .91 .85 5 rc4b 1749 2001 .93 .93 .95 .93 .94 7 rc15b 1563 1989 .70 .77 .80 .81 .80 .90 .88 .82 .87 .91 .87 .84 8 rc3b 1514 1857 .81 .76 .84 .87 .83 .70 .71 .90 .90 .90 .91 .88 .87 .84 9 rc9b 1650 2001 .88 .86 .82 .80 .83 .81 .81 .85 10 nt1 1800 2001 .83 .81 11 rc17d 1514 1861 .92 .92 .88 .88 .89 .82 .85 .91 .81 .69 .78 .85 .77 .69 12 rc908b 1626 1901 .55 .72 .79 .85 .84 .83 .80 .68 .61 13 rc13a 1403 1778 .88 .91 .87 .83 .82 .75 .76 .82 .90 .84 .79 .88 .85 .85 .85 14 rc5b 1432 2001 .86 .88 .89 .92 .92 .88 .74 .71 .76 .78 .79 .80 .90 .92 .94 .93 .89 15 rc14d 1511 2000 .80 .86 .89 .88 .92 .93 .90 .87 .75 .70 .79 .89 .89 .80 16 rc903b 1554 1970 .77 .83 .84 .88 .86 .86 .86 .89 .82 .81 .87 .85 17 rc13c 1414 1730 .86 .87 .87 .81 .79 .75 .80 .80 .87 .87 .83 .89 .89 18 rc905b 1577 1968 .87 .79 .85 .87 .83 .84 .82 .82 .86 .87 .88 19 rc11a 1660 2001 .85 .89 .79 .74 .84 .84 .76 .88 20 rc22d 1485 2000 .88 .90 .87 .84 .55 .32A .54 .75 .82 .81 .88 .93 .88 .79 .81 21 rc2 1446 2001 .82 .85 .83 .77 .78 .89 .85 .50B .50 .80 .81 .77 .85 .85 .84 .80 .80 22 rc21a 1810 2001 .68 .77 23 rc5d1 1405 2001 .78 .85 .87 .89 .92 .90 .90 .88 .90 .92 .92 .92 .86 .85 .92 .94 .92 .90 24 rc13e 1459 1837 .81 .79 .80 .65 .69 .77 .82 .80 .70 .77 .53 .48 .84 .83 .79 25 rc1 1492 1777 .80 .83 .78 .88 .85 .77 .84 .82 .79 .84 .88 .80 26 rc10c 1424 1649 .76 .78 .83 .73 .72 .80 .90 .88 .77 27 rc904a 1652 1999 .90 .93 .90 .87 .89 .87 .86 .87 28 rc816a 1606 1999 .75 .85 .85 .92 .90 .84 .88 .93 .84 .82 29 rc811b 1521 1874 .82 .80 .78 .80 .81 .84 .85 .83 .84 .71 .55 .54 .72 .84 30 rc7e1 1441 2001 .74 .78 .86 .92 .86 .88 .87 .78 .78 .86 .90 .87 .84 .83 .80 .66 .73 31 rc12a 1434 1633 .72 .70 .76 .87 .83 .82 .83 .84 32 rc18 1740 2001 .74 .80 .77 .62 .70 33 rc3a 1509 1859 .74 .75 .87 .86 .85 .80 .79 .84 .86 .89 .89 .87 .87 .87 34 rc4a 1541 1996 .91 .91 .87 .86 .93 .95 .90 .83 .89 .94 .96 .96 .93 35 rc808a 1830 1999 .70 36 nt3 1828 1970 .73 37 rc10b 1449 1629 .87 .88 .82 .78 .86 .89 .87 .87 38 rc804a 1607 1999 .86 .90 .90 .90 .84 .83 .87 .91 .94 .93 39 rc902b 1660 1996 .84 .86 .89 .87 .91 .86 .79 .86 40 rc9c 1562 1951 .89 .88 .85 .82 .80 .86 .89 .85 .84 .80 .80 .83 41 rc11b 1560 2001 .71 .81 .88 .78 .81 .92 .83 .80 .83 .80 .75 .87 42 rc903a 1601 1999 .89 .88 .88 .93 .93 .92 .87 .88 .90 .88 43 rc15c 1566 1999 .74 .75 .77 .79 .83 .84 .78 .81 .88 .91 .88 .88 44 rc17c 1478 1829 .83 .89 .86 .82 .83 .90 .85 .80 .82 .72 .76 .79 .82 .83 45 rc19b 1659 2001 .80 .80 .79 .79 .87 .90 .88 .89 46 rc14a 1459 1826 .81 .80 .81 .87 .88 .87 .86 .84 .80 .85 .79 .75 .75 .74 .73 47 rc16d 1582 2001 .84 .82 .88 .91 .93 .90 .86 .90 .92 .94 .83 48 rc813a 1454 1987 .83 .85 .84 .77 .85 .89 .86 .83 .83 .87 .88 .91 .85 .81 .83 .87 49 rc813b 1506 1999 .91 .88 .87 .83 .77 .85 .89 .83 .82 .91 .88 .86 .87 .88 50 rc461 1684 2001 .75 .84 .79 .73 .78 .67 .71 51 rc311 1790 2001 .55 .54 .65 52 rc34a 1542 2001 .80 .82 .88 .86 .85 .87 .79 .75 .86 .88 .92 .92 .88 53 rc35a 1425 1851 .85 .88 .87 .74 .69 .79 .88 .86 .83 .90 .85 .79 .89 .92 .93 .96 .96 54 rc36b 1365 1625 .80 .82 .80 .80 .86 .86 .88 .85 .88 .88 .88 55 rc37c 1480 2001 .84 .88 .87 .91 .89 .88 .91 .87 .86 .61 .65 .93 .94 .90 .89 56 rc38b 1427 2001 .89 .87 .84 .71 .45 .49 .66 .72 .74 .80 .90 .86 .78 .77 .71 .59 .80 57 rc38c 1405 2001 .77 .89 .93 .89 .90 .83 .85 .93 .91 .90 .95 .95 .83 .84 .91 .87 .83 .88 58 rc47a 1637 1990 .83 .84 .84 .78 .61 .60 .74 .66 .65 59 rc51 1482 1660 .65 .79 .74 .80 .74 .79 .84 60 rc30b 1772 1920 .70 .72 .63 .79 61 rc40a 1449 1567 .87 .87 .92 .93 .61 62 rc481 1669 2001 .88 .88 .75 .73 .77 .75 .73 .81 63 rc41a 1431 1625 .88 .93 .93 .91 .84 .82 .79 .79 64 rc47b 1605 2001 .58 .76 .83 .87 .83 .71 .58 .65 .69 .73 65 rc45a 1483 2001 .89 .87 .88 .86 .75 .83 .88 .81 .84 .86 .80 .81 .88 .86 .75 66 rc441 1679 2001 .79 .83 .86 .85 .91 .91 .90 67 rc491 1536 1976 .83 .85 .84 .87 .85 .82 .81 .82 .84 .82 .89 .91 .88 68 rc39z 1388 1580 .88 .87 .90 .91 .86 .86 .84 .82 69 rc39c 1374 1560 .76 .77 .86 .79 .86 .88 .87 .91 70 rc36a 1376 1993 .84 .86 .85 .86 .87 .83 .76 .83 .86 .86 .87 .85 .90 .86 .85 .90 .92 .88 .78 71 rc37b 1441 1860 .88 .90 .88 .87 .87 .87 .86 .84 .87 .86 .82 .83 .87 .82 .79 .82 .84 72 rc35c 1428 1930 .85 .89 .88 .75 .73 .79 .86 .87 .86 .87 .83 .78 .82 .85 .86 .88 .83 73 rc50 1388 1528 .71 .78 .77 .83 .86 .86 Av segment correlation .78 .81 .82 .84 .86 .84 .84 .81 .83 .83 .81 .82 .84 .86 .82 .82 .84 .84 .82 .82 PART 5: CORRELATION OF SERIES BY SEGMENTS: Dutch John Mountain 16:54 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 1850 1875 1900 1925 1950 1975 1899 1924 1949 1974 1999 2024 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 rc7a 1388 2001 .61 .65 .84 .87 .81 .81 2 rc19a 1882 2001 .72 .75 .74 .79 .80 3 rc22c 1493 2001 .89 .88 .85 .87 .86 .87 4 rc16a 1749 2001 .83 .82 .82 .88 .88 .87 5 rc4b 1749 2001 .95 .90 .88 .91 .90 .90 6 nt2 1889 2001 .84 .90 .90 .83 .83 7 rc15b 1563 1989 .87 .93 .95 .93 .85 9 rc9b 1650 2001 .84 .82 .80 .75 .83 .83 10 nt1 1800 2001 .77 .65 .63 .51 .68 .67 12 rc908b 1626 1901 .61 .70 14 rc5b 1432 2001 .89 .92 .90 .90 .93 .93 15 rc14d 1511 2000 .80 .87 .85 .75 .85 .84 16 rc903b 1554 1970 .80 .75 .82 .87 18 rc905b 1577 1968 .89 .89 .91 .88 19 rc11a 1660 2001 .92 .81 .81 .79 .72 .72 20 rc22d 1485 2000 .87 .86 .87 .85 .82 .81 21 rc2 1446 2001 .85 .87 .89 .85 .73 .73 22 rc21a 1810 2001 .75 .60 .61 .67 .72 .70 23 rc5d1 1405 2001 .88 .92 .93 .90 .87 .87 27 rc904a 1652 1999 .89 .92 .95 .94 .91 28 rc816a 1606 1999 .84 .87 .89 .87 .82 30 rc7e1 1441 2001 .88 .87 .89 .88 .82 .82 32 rc18 1740 2001 .83 .86 .87 .68 .59 .58 34 rc4a 1541 1996 .91 .91 .91 .93 .79 35 rc808a 1830 1999 .79 .82 .87 .88 .75 36 nt3 1828 1970 .76 .81 .88 .89 38 rc804a 1607 1999 .89 .90 .90 .83 .86 39 rc902b 1660 1996 .88 .83 .90 .94 .91 40 rc9c 1562 1951 .82 .82 .79 .79 41 rc11b 1560 2001 .91 .89 .88 .80 .67 .67 42 rc903a 1601 1999 .85 .84 .88 .84 .77 43 rc15c 1566 1999 .91 .91 .91 .89 .80 45 rc19b 1659 2001 .87 .76 .78 .80 .81 .82 47 rc16d 1582 2001 .78 .84 .82 .72 .64 .64 48 rc813a 1454 1987 .90 .87 .79 .84 .87 49 rc813b 1506 1999 .88 .89 .94 .91 .76 50 rc461 1684 2001 .79 .71 .79 .83 .74 .74 51 rc311 1790 2001 .80 .83 .78 .73 .79 .80 52 rc34a 1542 2001 .92 .91 .91 .85 .80 .80 55 rc37c 1480 2001 .91 .90 .91 .90 .85 .82 56 rc38b 1427 2001 .87 .75 .65 .53 .54 .53 57 rc38c 1405 2001 .89 .85 .61 .36 .69 .68 58 rc47a 1637 1990 .69 .64 .68 .75 .59 60 rc30b 1772 1920 .86 .72 62 rc481 1669 2001 .86 .68 .55 .58 .79 .79 64 rc47b 1605 2001 .73 .52 .63 .71 .48 .53 65 rc45a 1483 2001 .78 .83 .80 .73 .75 .75 66 rc441 1679 2001 .85 .85 .87 .86 .92 .92 67 rc491 1536 1976 .88 .91 .89 .81 .81 70 rc36a 1376 1993 .79 .83 .84 .86 .88 72 rc35c 1428 1930 .81 .77 .76 Av segment correlation .84 .82 .83 .81 .78 .77 PART 7: DESCRIPTIVE STATISTICS: Dutch John Mountain 16:54 Tue 07 Jun 2011 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 rc7a 1388 2001 614 25 0 .822 .20 .42 .073 .428 .346 2.53 .307 -.006 1 2 rc19a 1882 2001 120 5 0 .822 .27 .58 .109 .450 .383 2.54 .320 -.001 1 3 rc22c 1493 2001 509 21 0 .850 .22 .69 .119 .524 .483 2.64 .320 -.011 1 4 rc16a 1749 2001 253 11 0 .880 .21 .39 .078 .209 .416 2.38 .287 -.021 1 5 rc4b 1749 2001 253 11 0 .928 .19 .47 .087 .341 .478 2.52 .421 -.024 1 6 nt2 1889 2001 113 5 0 .856 .25 .39 .076 .182 .358 2.48 .477 .021 1 7 rc15b 1563 1989 427 17 0 .854 .26 .85 .127 .659 .349 2.53 .351 -.015 1 8 rc3b 1514 1857 344 14 0 .834 .24 .66 .117 .700 .328 2.57 .465 .003 1 9 rc9b 1650 2001 352 14 0 .840 .14 .30 .053 .269 .425 2.43 .317 .000 2 10 nt1 1800 2001 202 8 0 .796 .18 .48 .087 .595 .400 2.50 .372 -.073 1 11 rc17d 1514 1861 348 14 0 .818 .26 .66 .116 .571 .357 2.60 .420 -.013 1 12 rc908b 1626 1901 276 11 0 .705 .32 .96 .155 .642 .344 2.68 .450 .016 1 13 rc13a 1403 1778 376 15 0 .853 .32 .77 .146 .657 .332 2.57 .351 .029 1 14 rc5b 1432 2001 570 23 0 .883 .15 .55 .091 .625 .486 2.54 .389 .012 1 15 rc14d 1511 2000 490 20 0 .858 .14 .35 .060 .267 .491 2.52 .307 -.023 1 16 rc903b 1554 1970 417 16 0 .850 .19 .53 .105 .426 .548 2.63 .378 -.010 1 17 rc13c 1414 1730 317 13 0 .832 .34 .96 .145 .558 .361 2.67 .393 .050 1 18 rc905b 1577 1968 392 15 0 .856 .22 .89 .115 .575 .407 2.59 .365 -.041 1 19 rc11a 1660 2001 342 14 0 .806 .23 .41 .066 .465 .259 2.53 .356 .022 1 20 rc22d 1485 2000 516 21 1 .812 .21 .61 .110 .452 .470 2.61 .338 -.015 1 21 rc2 1446 2001 556 23 1 .819 .17 .49 .080 .447 .481 2.47 .321 .016 1 22 rc21a 1810 2001 192 8 0 .721 .20 .35 .064 .296 .348 2.37 .324 -.003 1 23 rc5d1 1405 2001 597 24 0 .908 .16 .59 .104 .691 .479 2.48 .329 .016 1 24 rc13e 1459 1837 379 15 0 .750 .27 .65 .130 .655 .385 2.63 .411 .036 1 25 rc1 1492 1777 286 12 0 .829 .23 .68 .131 .641 .462 2.73 .527 -.033 1 26 rc10c 1424 1649 226 9 0 .779 .22 .78 .156 .711 .418 2.53 .358 -.021 1 27 rc904a 1652 1999 348 13 0 .908 .23 1.08 .131 .412 .573 2.62 .379 -.004 1 28 rc816a 1606 1999 394 15 0 .853 .17 .53 .096 .578 .417 2.68 .354 -.020 1 29 rc811b 1521 1874 354 14 0 .760 .19 .89 .104 .478 .495 2.57 .378 -.017 1 30 rc7e1 1441 2001 561 23 0 .827 .20 .46 .068 .362 .331 2.39 .293 .001 1 31 rc12a 1434 1633 200 8 0 .830 .20 .43 .094 .424 .464 2.48 .346 .037 1 32 rc18 1740 2001 262 11 0 .737 .38 1.07 .183 .796 .242 2.63 .462 .002 1 33 rc3a 1509 1859 351 14 0 .829 .24 .65 .118 .700 .342 2.57 .419 -.016 1 34 rc4a 1541 1996 456 18 0 .898 .18 .48 .093 .361 .558 2.62 .393 .008 1 35 rc808a 1830 1999 170 6 0 .829 .13 .32 .062 .269 .517 2.49 .368 -.068 2 36 nt3 1828 1970 143 5 0 .872 .12 .23 .047 .282 .410 2.35 .308 -.029 1 37 rc10b 1449 1629 181 8 0 .849 .24 .66 .142 .801 .333 2.45 .356 .001 1 38 rc804a 1607 1999 393 15 0 .886 .22 1.11 .141 .618 .444 2.52 .311 -.023 1 39 rc902b 1660 1996 337 13 0 .879 .23 .66 .101 .354 .462 2.61 .378 -.010 1 40 rc9c 1562 1951 390 16 0 .848 .14 .35 .058 .358 .459 2.45 .320 -.006 1 41 rc11b 1560 2001 442 18 0 .812 .23 .42 .078 .543 .293 2.50 .354 .013 1 42 rc903a 1601 1999 399 15 0 .882 .20 .58 .113 .409 .556 2.60 .326 -.007 1 43 rc15c 1566 1999 434 17 0 .829 .26 .79 .128 .641 .374 2.42 .284 -.011 1 44 rc17c 1478 1829 352 14 0 .820 .30 1.06 .180 .714 .370 2.63 .444 -.021 2 45 rc19b 1659 2001 343 14 0 .823 .22 .58 .100 .523 .375 2.53 .345 -.036 1 46 rc14a 1459 1826 368 15 0 .820 .16 .64 .087 .607 .479 2.52 .300 -.001 1 47 rc16d 1582 2001 420 17 0 .869 .22 .53 .095 .384 .412 2.51 .311 -.027 1 48 rc813a 1454 1987 534 21 0 .883 .18 .52 .092 .413 .554 2.49 .341 -.026 2 PART 7: DESCRIPTIVE STATISTICS: Dutch John Mountain 16:54 Tue 07 Jun 2011 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 rc813b 1506 1999 494 19 0 .876 .17 .49 .086 .330 .556 2.57 .346 -.023 2 50 rc461 1684 2001 318 13 0 .750 .33 1.22 .191 .841 .265 2.67 .438 -.031 1 51 rc311 1790 2001 212 9 0 .726 .29 .80 .181 .844 .307 2.43 .320 .010 1 52 rc34a 1542 2001 460 19 0 .875 .17 .56 .090 .351 .590 2.60 .425 -.009 1 53 rc35a 1425 1851 427 17 0 .854 .20 .64 .114 .501 .539 2.57 .392 -.019 1 54 rc36b 1365 1625 261 11 0 .842 .25 .82 .162 .680 .484 2.52 .335 -.001 1 55 rc37c 1480 2001 522 21 0 .860 .23 .86 .120 .463 .491 2.48 .298 -.018 1 56 rc38b 1427 2001 575 23 0 .724 .19 .77 .108 .709 .386 2.56 .323 -.006 1 57 rc38c 1405 2001 597 24 0 .815 .24 .95 .124 .629 .394 2.61 .343 .004 2 58 rc47a 1637 1990 354 14 0 .703 .24 .46 .071 .369 .288 2.35 .203 -.019 1 59 rc51 1482 1660 179 7 0 .744 .30 .74 .151 .733 .362 2.63 .458 .006 1 60 rc30b 1772 1920 149 6 0 .725 .42 1.37 .222 .770 .288 2.57 .442 -.047 1 61 rc40a 1449 1567 119 5 0 .794 .29 .76 .134 .505 .411 2.49 .356 .050 1 62 rc481 1669 2001 333 14 0 .747 .30 .79 .107 .681 .232 2.46 .296 -.042 1 63 rc41a 1431 1625 195 8 0 .867 .23 .54 .116 .518 .528 2.41 .322 .015 1 64 rc47b 1605 2001 397 16 0 .668 .23 .50 .083 .558 .295 2.50 .366 -.004 1 65 rc45a 1483 2001 519 21 0 .853 .20 .77 .149 .789 .423 2.60 .379 -.025 1 66 rc441 1679 2001 323 13 0 .859 .22 .89 .133 .697 .427 2.51 .392 -.008 1 67 rc491 1536 1976 441 18 0 .870 .21 .75 .139 .502 .605 2.64 .398 -.026 1 68 rc39z 1388 1580 193 8 0 .858 .23 .84 .184 .755 .553 2.58 .448 -.009 2 69 rc39c 1374 1560 187 8 0 .821 .23 .77 .176 .697 .615 2.65 .429 .052 1 70 rc36a 1376 1993 618 24 0 .846 .17 .86 .138 .700 .636 2.59 .320 -.003 1 71 rc37b 1441 1860 420 17 0 .854 .17 .62 .100 .438 .580 2.61 .395 -.002 8 72 rc35c 1428 1930 503 20 0 .822 .18 .67 .118 .608 .583 2.55 .354 .007 1 73 rc50 1388 1528 141 6 0 .788 .20 .49 .079 .249 .411 2.63 .456 .138 1 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 26236 1055 2 .830 .22 1.37 .111 .535 .438 2.73 .358 -.006