Pintlers 2, Montana - mt120 Additional Information Jeremy Littell 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 : MT120.CRN Measurement file name : MT120.RWL Date checked : 07JUN11 Checked by : B. Bauer Beginning year : 1248 Ending year : 2006 Principal investigators: Jeremy Littell Site name : Pintlers 2 Site location : Montana Species information : LALY SUBALPINE LARCH Latitude : 4601 Longitude : -11323 Elevation : 2750M Series intercorrelation: 0.770 Avg mean sensitivity : 0.343 Avg standard deviation : 0.137 Avg autocorrelation : 0.597 Number dated series : 30 Segment length tested : 50 Number problem segments: 1 Pct problem segments : 0.19 PART 5: CORRELATION OF SERIES BY SEGMENTS: Pintlers 2 16:47 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 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 03A 1780 2006 .76 2 04B 1447 2006 .47 .56 .79 .81 .73 .71 .73 .80 .75 .68 .54 .67 .89 .88 .83 3 05B 1482 2006 .63 .71 .75 .75 .87 .88 .85 .76 .77 .78 .79 .84 .83 4 06B 1480 2006 .68 .71 .67 .74 .81 .80 .85 .79 .73 .85 .89 .87 .87 5 07B 1510 2006 .67 .69 .77 .81 .85 .86 .82 .83 .86 .91 .93 .92 6 08A 1586 2006 .64 .82 .87 .72 .74 .82 .79 .81 .86 7 09A 1511 2006 .41 .38 .61 .77 .79 .84 .84 .81 .83 .83 .81 .77 8 10B 1557 2006 .78 .78 .82 .84 .74 .66 .73 .80 .82 .78 9 11A 1743 2006 .88 .89 .86 10 01A 1529 2006 .75 .76 .81 .83 .84 .84 .67 .71 .87 .89 .90 11 13B 1628 2006 .84 .84 .85 .83 .83 .87 .91 12 14B 1618 2006 .77 .80 .81 .76 .79 .83 .88 .85 13 15A 1394 2006 .81 .81 .64 .58 .73 .80 .76 .74 .80 .81 .81 .79 .65 .71 .47 .40B .51 14 17B 1305 2006 .67 .76 .73 .83 .91 .81 .76 .79 .82 .73 .65 .81 .78 .72 .69 .52 .50 .64 .78 .81 15 18A 1655 2006 .68 .54 .68 .87 .89 .86 16 16xA 1248 1633 .65 .77 .79 .63 .70 .74 .67 .78 .79 .72 .67 .78 .79 17 003B 1778 2006 .82 18 07A 1444 2006 .55 .57 .54 .60 .64 .79 .85 .89 .91 .88 .84 .85 .89 .95 .95 19 05A 1537 2006 .74 .77 .90 .86 .83 .83 .86 .85 .87 .84 .74 20 04A 1326 2006 .62 .66 .73 .70 .66 .67 .77 .77 .73 .74 .84 .85 .83 .48 .45 .81 .76 .77 .88 21 15B 1655 2006 .74 .63 .71 .85 .85 .84 22 10A 1566 2006 .73 .78 .81 .82 .77 .76 .80 .79 .76 .78 23 08B 1557 2006 .66 .66 .85 .84 .71 .65 .72 .75 .76 .83 24 09B 1527 1960 .58 .80 .86 .87 .87 .87 .86 .90 .87 .79 .69 25 06A 1516 2006 .36 .38 .52 .76 .60 .61 .82 .80 .85 .87 .83 .89 26 17A 1316 1910 .68 .70 .68 .75 .74 .59 .67 .75 .81 .72 .67 .79 .81 .75 .76 .71 .65 .69 .76 .80 27 02A 1567 2006 .70 .74 .82 .72 .65 .69 .73 .75 .83 .83 28 14A 1663 2006 .66 .65 .80 .85 .93 .86 29 13A 1663 2006 .67 .82 .80 .81 .85 .86 Av segment correlation .67 .71 .72 .75 .77 .64 .64 .72 .69 .66 .71 .79 .81 .81 .75 .71 .77 .81 .83 .82 PART 5: CORRELATION OF SERIES BY SEGMENTS: Pintlers 2 16:47 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 1800 1825 1850 1875 1900 1925 1950 1975 1849 1874 1899 1924 1949 1974 1999 2024 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 03A 1780 2006 .82 .88 .73 .55 .70 .82 .68 .71 2 04B 1447 2006 .80 .81 .76 .79 .73 .73 .80 .80 3 05B 1482 2006 .83 .83 .71 .65 .84 .72 .62 .63 4 06B 1480 2006 .84 .80 .63 .42 .67 .79 .84 .85 5 07B 1510 2006 .87 .86 .83 .77 .82 .86 .88 .89 6 08A 1586 2006 .81 .78 .72 .70 .82 .84 .84 .87 7 09A 1511 2006 .79 .75 .65 .78 .87 .81 .76 .75 8 10B 1557 2006 .82 .81 .64 .61 .71 .83 .84 .85 9 11A 1743 2006 .87 .90 .82 .83 .86 .83 .77 .79 10 01A 1529 2006 .90 .86 .73 .77 .78 .73 .75 .75 11 13B 1628 2006 .84 .75 .72 .73 .75 .75 .72 .73 12 14B 1618 2006 .82 .83 .80 .78 .81 .84 .81 .83 13 15A 1394 2006 .60 .83 .75 .70 .74 .77 .76 .74 14 17B 1305 2006 .81 .86 .79 .61 .61 .78 .63 .61 15 18A 1655 2006 .85 .85 .82 .81 .83 .83 .84 .83 17 003B 1778 2006 .82 .88 .88 .81 .82 .87 .80 .81 18 07A 1444 2006 .95 .92 .87 .80 .79 .86 .81 .80 19 05A 1537 2006 .71 .66 .68 .65 .72 .80 .75 .80 20 04A 1326 2006 .86 .84 .74 .80 .79 .78 .86 .87 21 15B 1655 2006 .84 .85 .83 .81 .79 .65 .68 .67 22 10A 1566 2006 .82 .83 .62 .71 .81 .81 .83 .85 23 08B 1557 2006 .84 .89 .73 .58 .74 .89 .92 .90 24 09B 1527 1960 .73 .87 .76 .73 .76 .77 25 06A 1516 2006 .86 .84 .84 .81 .74 .64 .67 .70 26 17A 1316 1910 .66 .69 .79 .67 27 02A 1567 2006 .78 .72 .62 .76 .84 .81 .81 .75 28 14A 1663 2006 .82 .84 .79 .83 .84 .84 .82 .83 29 13A 1663 2006 .87 .91 .82 .78 .76 .77 .80 .82 30 01B 1845 2006 .77 .71 .66 .79 .89 .79 .79 Av segment correlation .82 .83 .75 .72 .78 .80 .78 .78 PART 7: DESCRIPTIVE STATISTICS: Pintlers 2 16:47 Tue 07 Jun 2011 Page 11 ----------------------------------------------------------------------------------------------------------------------------------- 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 03A 1780 2006 227 9 0 .699 .31 .58 .101 .340 .322 2.39 .306 -.005 1 2 04B 1447 2006 560 23 0 .728 .26 .55 .091 .345 .365 2.43 .289 -.026 2 3 05B 1482 2006 525 21 0 .765 .30 .92 .160 .762 .335 2.57 .342 -.005 1 4 06B 1480 2006 527 21 0 .784 .29 .71 .136 .625 .341 2.64 .338 -.020 1 5 07B 1510 2006 497 20 0 .821 .27 1.32 .136 .624 .377 2.66 .411 -.021 1 6 08A 1586 2006 421 17 0 .784 .37 1.14 .175 .694 .311 2.49 .313 -.032 1 7 09A 1511 2006 496 20 0 .762 .35 1.28 .192 .727 .325 2.64 .341 -.017 1 8 10B 1557 2006 450 18 0 .763 .32 .81 .138 .503 .361 2.71 .406 -.029 1 9 11A 1743 2006 264 11 0 .841 .38 1.02 .166 .542 .364 2.59 .385 .011 1 10 01A 1529 2006 478 19 0 .801 .22 .61 .095 .574 .332 2.69 .361 -.017 1 11 13B 1628 2006 379 15 0 .810 .39 1.10 .201 .588 .408 2.48 .362 -.034 1 12 14B 1618 2006 389 16 0 .813 .52 1.15 .185 .516 .305 2.66 .412 .015 1 13 15A 1394 2006 613 25 1 .713 .22 .69 .116 .645 .369 2.63 .335 -.025 1 14 17B 1305 2006 702 28 0 .723 .20 .93 .118 .772 .296 2.82 .385 -.020 1 15 18A 1655 2006 352 14 0 .796 .25 .50 .097 .558 .315 2.37 .248 -.011 1 16 16xA 1248 1633 386 13 0 .762 .25 .74 .113 .595 .329 2.76 .298 -.023 1 17 003B 1778 2006 229 9 0 .826 .27 .61 .120 .578 .368 2.50 .356 -.012 1 18 07A 1444 2006 563 23 0 .801 .26 .66 .111 .575 .345 2.56 .387 -.011 1 19 05A 1537 2006 470 19 0 .769 .26 .79 .158 .789 .385 2.52 .330 -.005 1 20 04A 1326 2006 681 27 0 .745 .28 .79 .147 .639 .387 2.47 .259 -.027 2 21 15B 1655 2006 352 14 0 .779 .20 .44 .091 .513 .419 2.54 .408 -.028 1 22 10A 1566 2006 441 18 0 .765 .35 .84 .142 .426 .370 2.56 .308 -.023 1 23 08B 1557 2006 450 18 0 .773 .26 .63 .135 .710 .324 2.61 .428 .016 1 24 09B 1527 1960 434 17 0 .797 .28 .60 .118 .434 .400 2.72 .438 -.005 1 25 06A 1516 2006 491 20 0 .762 .30 .97 .142 .654 .312 2.61 .302 -.007 1 26 17A 1316 1910 595 24 0 .707 .21 1.58 .136 .688 .293 2.73 .400 -.010 1 27 02A 1567 2006 440 18 0 .737 .44 .97 .153 .644 .229 2.50 .330 -.007 1 28 14A 1663 2006 344 14 0 .809 .60 1.27 .198 .492 .273 2.50 .264 -.003 1 29 13A 1663 2006 344 14 0 .808 .34 .90 .151 .437 .411 2.66 .508 -.015 1 30 01B 1845 2006 162 7 0 .800 .23 .45 .078 .338 .348 2.44 .405 -.006 3 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 13262 532 1 .770 .30 1.58 .137 .597 .343 2.82 .353 -.015