NCAS, Washington - WA135 (Formerly MT121) Additional Information Jeremy Littell Purpose of Collection: Climatology - Snowpack reconstruction NOTE: Site is located in Washington State, not Montana as originally reported. Site code changed 15-July-2016 from MT121 to WA135. No other location information or data values were changed. 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 : WA135.CRN Measurement file name : WA135.RWL Date checked : 07JUN11 Checked by : B. Bauer Beginning year : 1336 Ending year : 2005 Principal investigators: Jeremy Littell Site name : NCAS Site location : Washington Species information : LALY SUBALPINE LARCH Latitude : 4816 Longitude : -12027 Elevation : 2190M Series intercorrelation: 0.756 Avg mean sensitivity : 0.310 Avg standard deviation : 0.167 Avg autocorrelation : 0.691 Number dated series : 24 Segment length tested : 50 Number problem segments: 0 Pct problem segments : 0.00 PART 5: CORRELATION OF SERIES BY SEGMENTS: NCAS 16:48 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 01 1537 2005 .69 .76 .72 .73 .78 .81 .82 .76 .78 .86 .83 .76 .78 3 03B 1369 2005 .86 .85 .85 .83 .80 .79 .68 .58 .68 .82 .81 .84 .78 .76 .82 .82 .81 .83 .87 .89 4 04B 1567 2005 .74 .81 .78 .82 .85 .86 .84 .87 .83 .71 .79 .87 5 05B 1633 2005 .72 .72 .75 .81 .78 .79 .71 .70 .78 6 06A 1491 2005 .79 .83 .84 .77 .63 .71 .80 .58 .63 .82 .82 .84 .82 .86 .90 7 101B 1740 2005 .41 .54 .84 .89 .93 8 110B 1563 2005 .76 .69 .68 .78 .71 .70 .70 .49 .54 .73 .78 .80 9 108A 1808 2005 .71 .94 10 111x 1556 1718 .61 .62 .58 .66 .67 .49 12 107A 1750 2005 .43 .69 .75 .69 13 04A 1580 2005 .81 .72 .75 .85 .84 .88 .88 .87 .79 .85 .91 14 104A 1740 2005 .80 .79 .82 .90 .91 15 03A 1336 2005 .86 .85 .84 .83 .77 .78 .76 .79 .83 .80 .78 .81 .90 .87 .81 .88 .87 .88 .94 .96 16 107B 1748 2005 .55 .56 .81 .85 .89 17 102B 1508 2005 .76 .77 .69 .67 .76 .79 .74 .72 .70 .61 .67 .73 .85 .89 18 104B 1788 2005 .91 .91 .90 19 108B 1791 2005 .87 .87 .91 20 110A 1557 2005 .65 .66 .71 .72 .69 .72 .70 .58 .65 .78 .82 .87 21 101A 1800 2005 .87 .88 22 05A 1746 2005 .79 .79 .67 .62 .77 23 103B 1750 2005 .67 .77 .80 .89 24 103B 1440 1571 .62 .60 .85 .81 .67 Av segment correlation .86 .85 .85 .76 .72 .80 .77 .72 .72 .72 .73 .77 .75 .74 .78 .72 .72 .79 .82 .87 PART 5: CORRELATION OF SERIES BY SEGMENTS: NCAS 16:48 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 01 1537 2005 .84 .84 .66 .67 .74 .77 2 02 1861 2005 .79 .79 .51 .62 .83 .83 3 03B 1369 2005 .87 .84 .72 .60 .62 .63 4 04B 1567 2005 .88 .86 .81 .62 .54 .57 5 05B 1633 2005 .89 .82 .77 .76 .73 .76 6 06A 1491 2005 .93 .86 .74 .74 .80 .81 7 101B 1740 2005 .88 .77 .71 .77 .76 .80 8 110B 1563 2005 .82 .79 .80 .65 .62 .67 9 108A 1808 2005 .91 .87 .71 .67 .74 .75 11 09C 1884 2005 .71 .68 .67 .53 .57 12 107A 1750 2005 .63 .67 .65 .71 .75 .77 13 04A 1580 2005 .94 .88 .79 .78 .81 .82 14 104A 1740 2005 .90 .91 .86 .77 .75 .79 15 03A 1336 2005 .93 .73 .52 .76 .70 .72 16 107B 1748 2005 .82 .81 .83 .85 .81 .79 17 102B 1508 2005 .89 .86 .72 .73 .82 .77 18 104B 1788 2005 .89 .81 .79 .75 .80 .79 19 108B 1791 2005 .90 .90 .88 .84 .70 .71 20 110A 1557 2005 .86 .84 .77 .83 .84 .78 21 101A 1800 2005 .76 .71 .72 .64 .67 .72 22 05A 1746 2005 .82 .79 .73 .69 .73 .76 23 103B 1750 2005 .90 .87 .82 .62 .60 .62 Av segment correlation .86 .82 .74 .71 .72 .74 PART 7: DESCRIPTIVE STATISTICS: NCAS 16:48 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 01 1537 2005 469 19 0 .764 .31 .79 .138 .825 .212 2.60 .320 .003 1 2 02 1861 2005 145 6 0 .727 .26 .48 .085 .576 .242 2.73 .399 .032 1 3 03B 1369 2005 637 26 0 .773 .21 .66 .105 .771 .303 2.60 .406 -.014 1 4 04B 1567 2005 439 18 0 .731 .31 .75 .133 .676 .294 2.66 .283 -.009 1 5 05B 1633 2005 373 15 0 .760 .47 .88 .141 .515 .249 2.58 .335 .009 1 6 06A 1491 2005 515 21 0 .782 .38 .89 .153 .593 .330 2.57 .337 .000 2 7 101B 1740 2005 266 11 0 .756 .25 1.03 .177 .805 .383 2.57 .381 -.044 1 8 110B 1563 2005 443 18 0 .703 .46 1.43 .228 .866 .200 2.64 .308 .018 1 9 108A 1808 2005 198 8 0 .757 .47 .88 .168 .462 .314 2.45 .395 -.025 1 10 111x 1556 1718 163 6 0 .561 .56 1.95 .395 .810 .351 2.83 .383 .018 2 11 09C 1884 2005 122 5 0 .653 .28 .56 .091 .564 .240 2.59 .301 .024 1 12 107A 1750 2005 256 10 0 .676 .22 .46 .101 .406 .472 2.46 .345 -.028 1 13 04A 1580 2005 426 17 0 .831 .25 .51 .083 .476 .304 2.51 .365 -.011 2 14 104A 1740 2005 266 11 0 .832 .54 1.62 .235 .599 .334 2.51 .259 .002 3 15 03A 1336 2005 670 26 0 .785 .25 1.48 .177 .857 .331 2.48 .283 -.015 1 16 107B 1748 2005 258 11 0 .765 .26 .70 .148 .694 .428 2.47 .357 -.002 1 17 102B 1508 2005 498 20 0 .755 .29 1.09 .156 .651 .395 2.60 .340 -.010 1 18 104B 1788 2005 218 9 0 .856 .28 .92 .151 .689 .394 2.43 .367 -.036 1 19 108B 1791 2005 215 9 0 .833 .37 .71 .120 .578 .251 2.44 .371 -.005 1 20 110A 1557 2005 449 18 0 .733 .46 1.82 .250 .839 .235 2.61 .366 .029 1 21 101A 1800 2005 206 8 0 .739 .51 1.62 .310 .852 .276 2.56 .375 -.035 1 22 05A 1746 2005 260 11 0 .736 .58 1.31 .222 .536 .310 2.47 .334 -.014 2 23 103B 1750 2005 256 10 0 .736 .37 1.29 .246 .841 .343 2.54 .361 -.005 1 24 103B 1440 1571 132 5 0 .680 .24 .45 .095 .542 .374 2.37 .330 .015 2 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 7880 318 0 .756 .35 1.95 .167 .691 .310 2.83 .342 -.005