Spot Mountain West, Montana - mt122 Additional Information Pederson Graumlich Littell Peters Waggoner 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 : MT122.CRN Measurement file name : MT122.RWL Date checked : 07JUN11 Checked by : B. Bauer Beginning year : 1163 Ending year : 2002 Principal investigators: Pederson Graumlich Littell Peters Waggoner Site name : Spot Mountain West Site location : Montana Species information : PSME DOUGLAS-FIR Latitude : 4831 Longitude : -11322 Elevation : 1950M Series intercorrelation: 0.625 Avg mean sensitivity : 0.235 Avg standard deviation : 0.291 Avg autocorrelation : 0.749 Number dated series : 65 Segment length tested : 50 Number problem segments: 30 Pct problem segments : 3.01 PART 5: CORRELATION OF SERIES BY SEGMENTS: Spot Mountain West 16:49 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 1250 1275 1300 1325 1350 1375 1400 1425 1450 1475 1500 1525 1550 1575 1600 1625 1650 1675 1700 1725 1299 1324 1349 1374 1399 1424 1449 1474 1499 1524 1549 1574 1599 1624 1649 1674 1699 1724 1749 1774 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 SMW003A 1640 1809 .54 .55 .52 .49 .45 2 SMW006A 1601 2001 .29A .39 .53 .60 .54 .48 3 SMW006B 1630 2001 .34 .49 .57 .55 .52 4 SMW007A 1686 2001 .43 .34 .49 5 SMW007B 1686 1984 .60 .51 .53 6 SMW008A 1738 2001 .65 7 SMW009A 1695 2001 .36 .26A .46 8 SMW010A 1690 2001 .72 .64 .66 10 SMW106A 1732 2001 .33 11 SMW106B 1690 2001 .32A .45 .48 12 SMW108B 1569 1769 .53 .50 .30A .42 .49 .38 .30A .48 13 SMW109A 1339 2001 .48 .56 .74 .78 .79 .58 .44 .70 .64 .66 .70 .72 .70 .65 .74 .77 .63 14 SMW109B 1416 1809 .65 .65 .57 .53 .55 .53 .67 .73 .70 .59 .64 .78 .80 .56 16 SMW111A 1720 2001 .55 .57 17 SMW111B 1640 2001 .49 .58 .62 .56 .66 18 SMW204A 1724 2001 .44 .49 19 SMW204B 1737 2001 .42 22 SMW600A 1729 2002 .38 27 TML114A 1329 1994 .65 .73 .72 .77 .76 .74 .71 .64 .60 .75 .74 .70 .73 .75 .80 .75 .66 28 TML116A 1651 2000 .64 .63 .57 .60 30 TML117A 1163 2001 .22A .20A .36 .56 .63 .62 .70 .61 .49 .47 .56 .50 .57 .74 .63 .61 .71 .79 .77 .69 31 TML118A 1419 2001 .51 .62 .61 .60 .62 .57 .66 .69 .58 .54 .60 .73 .82 .80 32 TML118B 1696 2001 .73 .67 .68 33 TML119A 1386 2000 .82 .86 .77 .78 .80 .65 .49 .65 .67 .68 .79 .78 .77 .68 .60 35 TML120B 1720 2001 .41 .61 36 TML121A 1508 2001 .66 .73 .79 .35 .37 .88 .80 .77 .80 .74 37 TML121B 1537 1999 .79 .79 .73 .73 .87 .74 .71 .85 .76 40 TML403A 1371 2001 .59 .56 .75 .85 .84 .80 .77 .55 .54 .62 .53 .57 .64 .67 .69 .64 41 TML403B 1346 2001 .70 .69 .64 .70 .81 .81 .84 .80 .60 .58 .80 .76 .59 .71 .79 .78 .73 42 TML404A 1520 2001 .51 .62 .80 .48 .36 .58 .65 .78 .72 .62 43 TML404C 1389 2001 .64 .66 .69 .71 .68 .78 .75 .75 .67 .55 .57 .68 .78 .68 .49 45 TML455A 1371 2001 .73 .72 .77 .77 .78 .81 .79 .78 .81 .70 .70 .75 .65 .72 .76 .61 46 TML455B 1363 2001 .76 .74 .75 .65 .66 .80 .83 .76 .81 .80 .69 .68 .69 .71 .78 .70 47 TML500A 1553 2001 .32A .56 .57 .55 .62 .67 .70 .61 48 TML500B 1543 2001 .37 .55 .69 .72 .52 .62 .72 .66 .58 49 TML501A 1600 2001 .56 .66 .79 .76 .68 .63 50 TML502A 1489 2001 .60 .59 .40 .36 .69 .68 .50 .52 .67 .54 .49 51 TML502B 1489 1859 .58 .51 .53 .63 .64 .58 .54 .53 .69 .57 .43 53 TML600A 1490 2002 .64 .67 .80 .80 .65 .68 .81 .74 .67 .73 .77 54 TML600B 1520 2002 .80 .81 .83 .73 .72 .82 .81 .81 .81 .79 55 TML601A 1332 1989 .46 .68 .75 .80 .78 .75 .78 .81 .67 .70 .71 .75 .83 .81 .78 .67 .70 56 TML601B 1380 1949 .75 .80 .75 .73 .59 .55 .69 .81 .80 .79 .67 .61 .68 .62 .67 57 TML602A 1268 2002 .22B .20A .32A .31A .36 .45 .37 .35 .45 .62 .40 .27B .36 .43 .54 .55 .66 .59 .57 .57 58 TML602B 1560 2002 .39 .37B .48 .39 .49 .65 .60 .56 59 TML603A 1620 2002 .56 .65 .67 .78 .84 .79 60 TML603B 1617 2002 .43 .42 .69 .72 .72 .61 61 TML604A 1558 1817 .64 .80 .64 .63 .76 .76 .64 .69 62 TML605Ax 1410 1679 .58 .62 .67 .70 .74 .67 .71 .70 .61 .43 .44 63 TML605Bx 1447 1819 .69 .64 .65 .71 .47 .48 .64 .54 .55 .79 .81 .65 .65 Av segment correlation .22 .20 .34 .53 .63 .68 .70 .70 .68 .67 .66 .61 .64 .65 .60 .60 .65 .68 .63 .60 PART 5: CORRELATION OF SERIES BY SEGMENTS: Spot Mountain West 16:49 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 1750 1775 1800 1825 1850 1875 1900 1925 1950 1975 1799 1824 1849 1874 1899 1924 1949 1974 1999 2024 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 SMW003A 1640 1809 .50 .47 2 SMW006A 1601 2001 .57 .66 .70 .74 .73 .65 .44 .44 .51 .52 3 SMW006B 1630 2001 .61 .60 .59 .80 .77 .52 .40 .67 .76 .75 4 SMW007A 1686 2001 .47 .36 .47 .63 .53 .47 .64 .76 .68 .69 5 SMW007B 1686 1984 .62 .55 .55 .73 .61 .46 .59 .77 .73 6 SMW008A 1738 2001 .75 .69 .72 .73 .63 .50 .56 .70 .71 .71 7 SMW009A 1695 2001 .60 .57 .71 .77 .61 .61 .41 .49 .65 .65 8 SMW010A 1690 2001 .73 .61 .71 .70 .53 .46 .42 .55 .57 .57 9 SMW101A 1770 2001 .53 .52 .51 .56 .54 .37 .39B .57 .55 .55 10 SMW106A 1732 2001 .28A .54 .68 .73 .64 .40 .40B .62 .63 .62 11 SMW106B 1690 2001 .33A .55 .71 .61 .57 .48 .48 .72 .71 .72 13 SMW109A 1339 2001 .60 .68 .66 .42 .38 .56 .52 .68 .71 .73 14 SMW109B 1416 1809 .46 .65 15 SMW110A 1760 2001 .09B .03B .69 .77 .69 .71 .74 .80 .78 .78 16 SMW111A 1720 2001 .54 .65 .82 .67 .60 .56 .46B .70 .71 .71 17 SMW111B 1640 2001 .73 .74 .76 .77 .78 .66 .47 .67 .75 .74 18 SMW204A 1724 2001 .71 .69 .65 .60 .57 .56 .61 .75 .74 .72 19 SMW204B 1737 2001 .52 .56 .70 .71 .63 .62 .66 .78 .78 .78 20 SMW205A 1767 2001 .59 .57 .71 .77 .65 .57 .75 .80 .66 .68 21 SMW205B 1760 2001 .48B .63 .69 .59 .48 .53 .60 .64 .64 .63 22 SMW600A 1729 2002 .40 .35 .51 .61 .65 .67 .69 .77 .69 .68 23 SMW600B 1790 2002 .40 .46 .64 .63 .56 .48 .57 .61 .57 24 SMW601A 1812 2002 .32A .42 .43 .70 .70 .62 .53 .51 25 SMW602A 1760 2002 .40 .47 .71 .59 .59 .56 .54 .76 .72 .73 26 TML113a 1771 1919 .22B .30A .47 .75 .65 .51 27 TML114A 1329 1994 .69 .81 .82 .85 .85 .63 .53 .68 .66 28 TML116A 1651 2000 .56 .61 .74 .75 .70 .66 .63 .67 .62 .57 29 TML116B 1890 2000 .75 .72 .79 .77 .75 30 TML117A 1163 2001 .67 .70 .63 .51 .51 .57 .46 .43 .51 .48 31 TML118A 1419 2001 .74 .78 .76 .58 .60 .54 .47 .45 .40 .45 32 TML118B 1696 2001 .71 .76 .70 .60 .67 .61 .55 .56 .50 .53 33 TML119A 1386 2000 .71 .76 .73 .83 .80 .65 .52 .56 .64 .62 34 TML120A 1770 2001 .64 .64 .71 .81 .69 .45 .59 .84 .83 .82 35 TML120B 1720 2001 .64 .66 .73 .83 .67 .44 .60 .86 .79 .78 36 TML121A 1508 2001 .78 .72 .72 .73 .73 .78 .77 .74 .67 .70 37 TML121B 1537 1999 .70 .80 .83 .76 .75 .77 .77 .73 .50 38 TML400A 1830 2001 .40 .40 .59 .52 .62 .59 .57 39 TML400B 1824 2001 .61 .58 .54 .66 .68 .57 .43 .41 40 TML403A 1371 2001 .62 .72 .70 .63 .66 .59 .39 .63 .74 .73 41 TML403B 1346 2001 .73 .83 .80 .83 .80 .61 .61 .78 .80 .80 42 TML404A 1520 2001 .51 .60 .69 .73 .73 .61 .59 .68 .55 .57 43 TML404C 1389 2001 .42 .60 .72 .61 .58 .56 .61 .64 .46 .45 44 TML452A 1832 2001 .59 .67 .55 .53 .59 .31A .30A 45 TML455A 1371 2001 .59 .69 .73 .81 .84 .78 .43 .52 .77 .76 46 TML455B 1363 2001 .60 .65 .73 .82 .81 .70 .62 .75 .79 .79 47 TML500A 1553 2001 .40 .55 .65 .68 .72 .72 .68 .68 .67 .68 48 TML500B 1543 2001 .44 .45 .48 .70 .76 .71 .75 .66 .49 .48 49 TML501A 1600 2001 .62 .69 .76 .86 .76 .64 .72 .79 .78 .78 50 TML502A 1489 2001 .60 .56 .57 .60 .60 .52 .50 .61 .50 .48 51 TML502B 1489 1859 .53 .49 .62 .75 52 TML503B 1771 2001 .32A .28A .35 .36 .59 .78 .64 .66 .65 .66 53 TML600A 1490 2002 .72 .73 .77 .69 .71 .79 .82 .80 .74 .74 54 TML600B 1520 2002 .68 .61 .78 .81 .80 .85 .76 .72 .67 .68 55 TML601A 1332 1989 .70 .73 .81 .82 .83 .69 .55 .71 .76 56 TML601B 1380 1949 .69 .66 .74 .82 .80 .60 .57 57 TML602A 1268 2002 .53 .61 .53 .52 .61 .59 .54 .69 .70 .68 58 TML602B 1560 2002 .54 .32A .40 .61 .64 .71 .59 .57 .52 .54 59 TML603A 1620 2002 .75 .81 .82 .80 .74 .67 .63 .72 .72 .69 60 TML603B 1617 2002 .65 .78 .76 .74 .66 .50 .54 .71 .70 .68 61 TML604A 1558 1817 .68 .73 63 TML605Bx 1447 1819 .70 .73 64 TML606Cx 1797 1918 .40 .39 .70 .60 .51 65 TML607B 1750 1980 .36 .56 .57 .44 .52 .63 .60 .65 .65 Av segment correlation .57 .60 .66 .68 .65 .61 .58 .67 .65 .64 PART 7: DESCRIPTIVE STATISTICS: Spot Mountain West 16:49 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 SMW003A 1640 1809 170 7 0 .501 .37 .82 .117 .535 .233 2.67 .420 -.056 1 2 SMW006A 1601 2001 401 16 1 .550 .55 2.32 .404 .912 .219 2.75 .349 -.055 1 3 SMW006B 1630 2001 372 15 0 .593 .47 1.28 .292 .876 .266 2.49 .258 -.025 7 4 SMW007A 1686 2001 316 13 0 .531 .47 1.50 .250 .731 .282 2.82 .450 -.030 1 5 SMW007B 1686 1984 299 12 0 .606 .60 2.03 .311 .707 .288 2.72 .388 -.022 1 6 SMW008A 1738 2001 264 11 0 .649 1.02 2.38 .349 .623 .223 2.64 .371 -.022 1 7 SMW009A 1695 2001 307 13 1 .548 .88 2.56 .328 .771 .184 2.74 .339 .013 2 8 SMW010A 1690 2001 312 13 0 .612 .72 1.65 .282 .762 .195 2.65 .420 -.048 5 9 SMW101A 1770 2001 232 10 1 .493 .70 1.69 .251 .677 .232 2.64 .354 -.060 1 10 SMW106A 1732 2001 270 11 2 .534 .86 2.58 .458 .822 .237 2.77 .447 -.027 1 11 SMW106B 1690 2001 312 13 2 .542 .89 2.69 .478 .794 .270 2.84 .429 -.006 1 12 SMW108B 1569 1769 201 8 2 .446 .46 .83 .146 .450 .275 2.52 .341 -.012 1 13 SMW109A 1339 2001 663 27 0 .628 .34 1.96 .286 .898 .277 2.50 .274 -.022 1 14 SMW109B 1416 1809 394 16 0 .629 .36 2.28 .280 .793 .267 2.72 .406 .011 1 15 SMW110A 1760 2001 242 10 2 .602 .94 45.93 2.931 .011 .251 3.19 .402 .029 1 16 SMW111A 1720 2001 282 12 1 .609 .61 1.56 .218 .640 .213 2.65 .312 -.029 1 17 SMW111B 1640 2001 362 15 0 .646 .69 1.81 .279 .663 .248 2.70 .410 -.021 3 18 SMW204A 1724 2001 278 12 0 .607 .69 1.99 .309 .789 .223 2.86 .467 .030 2 19 SMW204B 1737 2001 265 11 0 .642 .67 1.80 .282 .718 .247 2.79 .459 .001 2 20 SMW205A 1767 2001 235 10 0 .663 .60 1.71 .227 .654 .225 2.90 .406 -.036 1 21 SMW205B 1760 2001 242 10 1 .575 .49 1.41 .172 .614 .208 2.88 .419 -.023 2 22 SMW600A 1729 2002 274 11 0 .562 .67 2.09 .377 .875 .210 2.55 .319 -.034 1 23 SMW600B 1790 2002 213 9 0 .522 .75 1.99 .348 .869 .178 2.63 .383 -.013 1 24 SMW601A 1812 2002 191 8 1 .532 .84 2.46 .597 .907 .211 2.62 .376 -.023 1 25 SMW602A 1760 2002 243 10 0 .587 .59 2.07 .343 .913 .172 2.72 .315 -.003 1 26 TML113a 1771 1919 149 6 2 .440 .66 2.13 .336 .843 .168 2.94 .485 -.047 1 27 TML114A 1329 1994 666 26 0 .720 .51 1.84 .224 .728 .237 2.61 .267 -.009 1 28 TML116A 1651 2000 350 14 0 .645 .81 3.19 .370 .758 .207 2.77 .330 -.028 1 29 TML116B 1890 2000 111 5 0 .747 .36 1.01 .204 .829 .242 2.92 .560 -.002 2 30 TML117A 1163 2001 839 30 2 .548 .38 1.28 .193 .783 .268 2.68 .324 -.004 9 31 TML118A 1419 2001 583 24 0 .606 .45 1.91 .261 .814 .241 2.59 .286 -.037 1 32 TML118B 1696 2001 306 13 0 .631 .50 1.49 .271 .777 .260 2.75 .368 -.033 1 33 TML119A 1386 2000 615 25 0 .711 .49 1.29 .195 .731 .225 2.60 .284 -.006 1 34 TML120A 1770 2001 232 10 0 .696 .77 1.73 .281 .747 .203 2.63 .430 -.033 1 35 TML120B 1720 2001 282 12 0 .638 .57 1.26 .211 .751 .218 2.61 .376 -.021 1 36 TML121A 1508 2001 494 20 0 .695 .58 3.10 .402 .826 .265 2.73 .387 -.022 1 37 TML121B 1537 1999 463 18 0 .732 .51 2.19 .344 .804 .290 2.56 .330 -.017 1 38 TML400A 1830 2001 172 7 0 .507 1.20 3.64 .618 .881 .201 2.78 .380 -.015 1 39 TML400B 1824 2001 178 8 0 .561 1.55 4.41 .875 .884 .227 2.75 .387 -.035 2 40 TML403A 1371 2001 631 26 0 .655 .38 1.29 .182 .754 .257 2.73 .360 .004 1 41 TML403B 1346 2001 656 27 0 .721 .46 1.49 .198 .725 .253 2.51 .223 -.004 1 42 TML404A 1520 2001 482 20 0 .610 .22 .63 .083 .563 .277 2.74 .345 -.022 1 43 TML404C 1389 2001 613 25 0 .624 .29 1.85 .240 .895 .265 2.53 .277 -.009 1 44 TML452A 1832 2001 170 7 2 .494 1.09 3.40 .496 .833 .176 2.87 .483 -.019 1 45 TML455A 1371 2001 631 26 0 .710 .40 1.21 .246 .882 .212 2.52 .264 -.017 1 46 TML455B 1363 2001 639 26 0 .728 .47 1.25 .201 .804 .201 2.52 .270 -.009 1 47 TML500A 1553 2001 449 18 1 .604 .47 1.06 .181 .779 .200 2.64 .297 -.019 1 48 TML500B 1543 2001 459 19 0 .600 .39 .91 .144 .687 .230 2.51 .297 -.006 1 PART 7: DESCRIPTIVE STATISTICS: Spot Mountain West 16:49 Tue 07 Jun 2011 Page 14 ----------------------------------------------------------------------------------------------------------------------------------- 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 TML501A 1600 2001 402 16 0 .705 .48 1.18 .131 .597 .182 2.79 .350 .027 1 50 TML502A 1489 2001 513 21 0 .544 .41 1.54 .208 .825 .210 2.88 .426 -.028 2 51 TML502B 1489 1859 371 15 0 .595 .50 1.44 .190 .697 .206 2.83 .369 -.028 1 52 TML503B 1771 2001 231 10 2 .527 1.24 3.62 .778 .921 .209 2.58 .369 -.003 1 53 TML600A 1490 2002 513 21 0 .728 .57 2.19 .331 .823 .239 2.62 .341 -.013 1 54 TML600B 1520 2002 483 20 0 .756 .41 2.14 .259 .792 .265 2.89 .368 -.007 1 55 TML601A 1332 1989 658 26 0 .725 .46 1.69 .218 .800 .224 2.70 .337 -.009 1 56 TML601B 1380 1949 570 22 0 .699 .51 1.34 .183 .643 .229 2.74 .297 -.007 1 57 TML602A 1268 2002 735 30 5 .471 .40 2.73 .253 .812 .235 2.87 .389 -.019 1 58 TML602B 1560 2002 443 18 2 .518 .32 1.26 .118 .419 .260 2.86 .367 -.010 1 59 TML603A 1620 2002 383 16 0 .718 .62 1.48 .190 .561 .211 2.78 .372 -.030 1 60 TML603B 1617 2002 386 16 0 .631 .86 2.64 .374 .739 .237 2.78 .336 .003 2 61 TML604A 1558 1817 260 10 0 .672 .43 .74 .105 .473 .190 2.64 .343 .015 1 62 TML605Ax 1410 1679 270 11 0 .617 .54 2.34 .222 .592 .217 2.86 .347 .026 1 63 TML605Bx 1447 1819 373 15 0 .647 .41 2.05 .248 .854 .235 2.63 .290 .006 1 64 TML606Cx 1797 1918 122 5 0 .506 .55 1.28 .182 .557 .224 2.75 .442 -.010 1 65 TML607B 1750 1980 231 9 0 .544 .41 1.01 .191 .757 .242 2.68 .353 .022 2 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 24454 996 30 .625 .54 45.93 .291 .749 .235 3.19 .346 -.014