Pintlers, Montana - mt119 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 : MT119.CRN Measurement file name : MT119.RWL Date checked : 07JUN11 Checked by : B. Bauer Beginning year : 1026 Ending year : 2005 Principal investigators: Jeremy Littell Site name : Pintlers Site location : Montana Species information : LALY SUBALPINE LARCH Latitude : 4601 Longitude : -11322 Elevation : 2700M Series intercorrelation: 0.699 Avg mean sensitivity : 0.296 Avg standard deviation : 0.147 Avg autocorrelation : 0.576 Number dated series : 19 Segment length tested : 50 Number problem segments: 1 Pct problem segments : 0.36 PART 5: CORRELATION OF SERIES BY SEGMENTS: Pintlers 16:46 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 1150 1175 1200 1225 1250 1275 1300 1325 1350 1375 1400 1425 1450 1475 1500 1525 1550 1575 1600 1625 1199 1224 1249 1274 1299 1324 1349 1374 1399 1424 1449 1474 1499 1524 1549 1574 1599 1624 1649 1674 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 01B 1168 2005 .45 .60 .70 .73 .59 .58 .74 .82 .62 .61 .63 .52 .59 .72 .71 .77 .82 .75 .75 .81 3 04A 1531 2005 .61 .65 .69 .80 .87 5 06B 1628 2005 .78 8 09 1573 2005 .58 .59 .60 .51 10 11A 1618 2005 .62 .71 12 01A 1026 2005 .45 .60 .70 .73 .59 .58 .74 .82 .62 .61 .63 .52 .59 .72 .79 .78 .74 .75 .79 .81 19 05B 1643 2005 .70 Av segment correlation .45 .60 .70 .73 .59 .58 .74 .82 .62 .61 .63 .52 .59 .72 .75 .72 .70 .70 .71 .74 PART 5: CORRELATION OF SERIES BY SEGMENTS: Pintlers 16:46 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 1650 1675 1700 1725 1750 1775 1800 1825 1850 1875 1900 1925 1950 1975 1699 1724 1749 1774 1799 1824 1849 1874 1899 1924 1949 1974 1999 2024 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 01B 1168 2005 .89 .57 .47 .57 .56 .60 .64 .63 .62 .61 .55 .65 .72 .71 2 02A 1823 2005 .77 .77 .81 .75 .65 .80 .84 .79 3 04A 1531 2005 .78 .75 .87 .87 .77 .71 .74 .81 .62 .55 .67 .78 .74 .75 4 05A 1681 2005 .17B .54 .81 .87 .84 .84 .82 .70 .64 .69 .77 .63 .62 5 06B 1628 2005 .83 .77 .81 .80 .77 .85 .86 .81 .79 .80 .73 .81 .81 .79 6 07A 1732 2005 .73 .75 .71 .72 .78 .83 .86 .88 .83 .77 .75 7 08A 1776 2005 .66 .77 .82 .81 .71 .67 .81 .81 .80 8 09 1573 2005 .56 .52 .54 .79 .80 .73 .82 .81 .77 .76 .68 .66 .69 .69 9 10A 1686 2005 .41 .51 .81 .82 .83 .84 .85 .82 .80 .87 .86 .82 .80 10 11A 1618 2005 .71 .69 .65 .75 .87 .82 .63 .65 .79 .39 .40 .67 .67 .69 11 02C 1823 2005 .75 .71 .65 .65 .66 .69 .77 .76 12 01A 1026 2005 .87 .73 .66 .69 .77 .70 .70 .73 .59 .52 .62 .65 .59 .62 13 02B 1828 2005 .63 .62 .57 .61 .66 .65 .64 14 10B 1703 2005 .62 .80 .79 .80 .80 .82 .69 .69 .83 .80 .81 .81 15 08B 1794 2005 .78 .79 .80 .78 .72 .67 .84 .81 .82 16 07B 1775 2005 .67 .76 .79 .71 .71 .77 .86 .82 .81 17 06A 1659 2005 .77 .67 .68 .68 .68 .77 .84 .86 .87 .85 .72 .76 .78 .79 18 11B 1714 2005 .43 .68 .74 .73 .65 .65 .53 .47 .62 .65 .61 .60 19 05B 1643 2005 .76 .70 .44 .58 .88 .88 .88 .83 .80 .77 .77 .83 .79 .75 Av segment correlation .77 .60 .60 .74 .77 .76 .77 .77 .73 .67 .69 .76 .74 .74 PART 7: DESCRIPTIVE STATISTICS: Pintlers 16:46 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 () --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- 1 01B 1168 2005 838 34 0 .645 .25 .56 .089 .721 .227 2.67 .314 -.018 2 2 02A 1823 2005 183 8 0 .767 .81 1.85 .308 .519 .276 2.76 .385 -.056 1 3 04A 1531 2005 475 19 0 .706 .17 .35 .055 .360 .299 2.46 .306 .003 1 4 05A 1681 2005 325 13 1 .619 .44 1.01 .197 .263 .451 2.45 .280 -.028 1 5 06B 1628 2005 378 15 0 .791 .27 .53 .091 .535 .278 2.56 .308 -.013 1 6 07A 1732 2005 274 11 0 .772 .62 1.70 .246 .585 .301 2.61 .302 -.022 1 7 08A 1776 2005 230 9 0 .756 .77 1.59 .274 .468 .309 2.56 .411 .021 1 8 09 1573 2005 433 18 0 .652 .29 .74 .121 .580 .322 2.44 .273 -.011 1 9 10A 1686 2005 320 13 0 .748 .43 .94 .165 .658 .273 2.50 .269 -.014 1 10 11A 1618 2005 388 16 0 .669 .36 .91 .151 .504 .332 2.57 .405 -.005 1 11 02C 1823 2005 183 8 0 .713 .58 1.50 .253 .421 .426 2.61 .417 -.035 1 12 01A 1026 2005 980 34 0 .656 .22 .64 .096 .743 .247 2.65 .346 .002 1 13 02B 1828 2005 178 7 0 .632 .31 .64 .116 .427 .335 2.63 .386 -.027 1 14 10B 1703 2005 303 12 0 .753 .54 1.12 .225 .651 .291 2.56 .384 .002 1 15 08B 1794 2005 212 9 0 .765 .69 1.70 .301 .617 .301 2.59 .429 -.012 1 16 07B 1775 2005 231 9 0 .744 .62 1.63 .250 .582 .295 2.54 .293 -.035 1 17 06A 1659 2005 347 14 0 .771 .21 .51 .082 .655 .261 2.61 .324 -.014 1 18 11B 1714 2005 292 12 0 .585 .41 .93 .163 .434 .361 2.59 .335 .009 1 19 05B 1643 2005 363 15 0 .748 .27 .66 .113 .585 .310 2.54 .358 -.002 1 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 6933 276 1 .699 .37 1.85 .147 .576 .296 2.76 .335 -.011