Clarks Fork Yellowstone NW, Wyoming - wy039 Additional Information Greg Pederson Kali Abel 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 : WY039.CRN Measurement file name : WY039.RWL Date checked : 07JUN11 Checked by : B. Bauer Beginning year : 1447 Ending year : 2007 Principal investigators: Greg Pederson Kali Abel Site name : Clarks Fork Yellowstone NW Site location : Wyoming Species information : PSME DOUGLAS-FIR Latitude : 4456 Longitude : -10939 Elevation : 2591M Series intercorrelation: 0.660 Avg mean sensitivity : 0.224 Avg standard deviation : 0.379 Avg autocorrelation : 0.742 Number dated series : 28 Segment length tested : 50 Number problem segments: 3 Pct problem segments : 0.82 PART 5: CORRELATION OF SERIES BY SEGMENTS: Clarks Fork Yellowstone NW 16:57 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 1450 1475 1500 1525 1550 1575 1600 1625 1650 1675 1700 1725 1750 1775 1800 1825 1850 1875 1900 1925 1499 1524 1549 1574 1599 1624 1649 1674 1699 1724 1749 1774 1799 1824 1849 1874 1899 1924 1949 1974 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 CFY03a 1862 2007 .17B .39 .55 .54 2 CFY04a 1785 2007 .63 .64 .71 .70 .62 .62 .69 3 CFY04b 1742 2007 .44 .51 .58 .70 .72 .61 .62 .67 .65 4 CFY05a 1609 2007 .64 .71 .58 .60 .63 .67 .71 .57 .65 .66 .50 .63 .78 .81 5 CFY05b 1610 2007 .72 .69 .58 .66 .68 .63 .63 .55 .70 .71 .45 .53 .79 .79 6 CFY06a 1757 2007 .71 .64 .65 .67 .52 .66 .76 .68 7 CFY07a 1755 2007 .46 .45 .34 .62 .68 .77 .74 .73 8 CFY08a 1760 2007 .51 .49 .48 .66 .46 .50 .64 .57 9 CFY09a 1477 2007 .86 .83 .83 .87 .82 .79 .78 .80 .80 .80 .83 .89 .82 .74 .63 .64 .77 .83 .78 10 CFY09b 1447 2007 .87 .87 .86 .84 .87 .79 .76 .76 .72 .78 .78 .77 .79 .77 .76 .74 .73 .79 .87 .63 11 CFY10a 1648 2007 .65 .67 .76 .75 .67 .75 .73 .70 .74 .75 .80 .86 .84 12 CFY10b 1628 2007 .49 .79 .79 .73 .68 .75 .68 .71 .81 .78 .77 .79 .80 13 CFY12a 1626 2007 .69 .64 .79 .80 .76 .71 .64 .72 .78 .68 .45 .41 .60 14 CFY12b 1625 2007 .67 .66 .78 .78 .77 .76 .66 .71 .76 .71 .63 .65 .69 15 CFY13a 1735 2007 .83 .82 .63 .64 .80 .79 .67 .73 .86 16 CFY13b 1684 2007 .72 .74 .83 .83 .70 .65 .71 .70 .77 .89 .87 17 CFY13c 1890 2007 .85 .85 .80 18 CFY14a 1767 2007 .55 .61 .56 .62 .70 .78 .77 .68 19 CFY14b 1769 2007 .49 .57 .53 .60 .60 .70 .67 .50 20 CFY15a 1706 2007 .56 .68 .81 .75 .59 .60 .66 .75 .73 .65 21 CFY15b 1787 2007 .64 .67 .75 .73 .70 .68 .74 22 CFY16a 1745 2007 .47 .45 .53 .62 .71 .69 .65 .82 .83 23 CFY17a 1645 2007 .65 .68 .81 .80 .77 .81 .54 .49 .71 .70 .82 .91 .91 24 CFY17b 1636 2007 .63 .76 .82 .80 .73 .72 .44 .33 .55 .68 .76 .83 .83 25 CFY19a 1473 2007 .71 .70 .67 .63 .70 .78 .81 .76 .75 .81 .73 .64 .61 .54 .55 .58 .62 .66 .66 .64 26 CFY19b 1507 2007 .61 .61 .70 .72 .69 .63 .44 .48 .47 .41 .46 .42 .50 .61 .55 .42 .45 .47 27 CFY20a 1724 2007 .52 .52 .78 .82 .82 .81 .70 .71 .78 .73 28 CFY20b 1743 2007 .74 .81 .77 .69 .80 .69 .74 .82 .72 Av segment correlation .79 .81 .74 .73 .78 .78 .74 .68 .67 .74 .71 .68 .68 .62 .62 .69 .64 .67 .73 .72 PART 5: CORRELATION OF SERIES BY SEGMENTS: Clarks Fork Yellowstone NW 16:57 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 1950 1975 1999 2024 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 CFY03a 1862 2007 .47 .49 2 CFY04a 1785 2007 .78 .80 3 CFY04b 1742 2007 .66 .68 4 CFY05a 1609 2007 .71 .69 5 CFY05b 1610 2007 .68 .62 6 CFY06a 1757 2007 .59 .47 7 CFY07a 1755 2007 .72 .66 8 CFY08a 1760 2007 .62 .58 9 CFY09a 1477 2007 .80 .73 10 CFY09b 1447 2007 .47 .44 11 CFY10a 1648 2007 .84 .82 12 CFY10b 1628 2007 .84 .85 13 CFY12a 1626 2007 .72 .77 14 CFY12b 1625 2007 .77 .83 15 CFY13a 1735 2007 .79 .74 16 CFY13b 1684 2007 .72 .62 17 CFY13c 1890 2007 .72 .64 18 CFY14a 1767 2007 .66 .77 19 CFY14b 1769 2007 .63 .67 20 CFY15a 1706 2007 .69 .70 21 CFY15b 1787 2007 .84 .79 22 CFY16a 1745 2007 .80 .75 23 CFY17a 1645 2007 .86 .84 24 CFY17b 1636 2007 .84 .84 25 CFY19a 1473 2007 .65 .62 26 CFY19b 1507 2007 -.23B-.25B 27 CFY20a 1724 2007 .74 .78 28 CFY20b 1743 2007 .76 .71 Av segment correlation .68 .67 PART 7: DESCRIPTIVE STATISTICS: Clarks Fork Yellowstone NW 16:57 Tue 07 Jun 2011 Page 10 ----------------------------------------------------------------------------------------------------------------------------------- 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 CFY03a 1862 2007 146 6 1 .395 1.04 2.63 .446 .787 .209 2.70 .397 -.059 1 2 CFY04a 1785 2007 223 9 0 .686 1.27 4.57 .519 .767 .192 2.70 .420 -.067 2 3 CFY04b 1742 2007 266 11 0 .624 1.25 2.71 .479 .822 .183 2.67 .407 -.020 1 4 CFY05a 1609 2007 399 16 0 .655 .89 3.57 .458 .832 .226 2.48 .328 -.038 4 5 CFY05b 1610 2007 398 16 0 .649 .92 2.90 .511 .854 .206 2.58 .355 -.027 5 6 CFY06a 1757 2007 251 10 0 .631 1.25 2.73 .434 .755 .205 2.48 .311 -.045 1 7 CFY07a 1755 2007 253 10 0 .551 1.17 5.51 1.062 .910 .280 2.54 .367 -.040 3 8 CFY08a 1760 2007 248 10 0 .544 1.11 2.01 .359 .769 .186 2.71 .406 .017 1 9 CFY09a 1477 2007 531 21 0 .780 .36 1.54 .230 .818 .288 2.59 .338 -.031 1 10 CFY09b 1447 2007 561 22 0 .753 .42 1.87 .283 .816 .294 2.68 .322 -.044 1 11 CFY10a 1648 2007 360 15 0 .758 .63 1.70 .271 .835 .202 2.66 .393 -.036 1 12 CFY10b 1628 2007 380 15 0 .720 .70 1.89 .324 .831 .199 2.58 .350 -.017 1 13 CFY12a 1626 2007 382 15 0 .682 .61 1.36 .242 .740 .211 2.57 .314 -.016 1 14 CFY12b 1625 2007 383 15 0 .721 .80 1.98 .312 .711 .203 2.56 .343 -.023 1 15 CFY13a 1735 2007 273 11 0 .741 .52 1.14 .186 .727 .207 2.74 .348 -.003 1 16 CFY13b 1684 2007 324 13 0 .754 .65 1.29 .167 .526 .201 2.65 .431 -.009 1 17 CFY13c 1890 2007 118 5 0 .767 .39 .62 .096 .383 .225 2.47 .445 -.035 1 18 CFY14a 1767 2007 241 10 0 .677 1.21 2.81 .426 .613 .262 2.78 .467 -.056 1 19 CFY14b 1769 2007 239 10 0 .609 1.13 2.69 .458 .708 .264 2.78 .448 -.030 1 20 CFY15a 1706 2007 302 12 0 .676 1.22 2.34 .313 .648 .171 2.80 .420 -.007 1 21 CFY15b 1787 2007 221 9 0 .723 .92 1.57 .228 .683 .155 2.69 .421 -.027 1 22 CFY16a 1745 2007 263 11 0 .658 1.13 2.64 .569 .906 .176 2.71 .427 -.028 1 23 CFY17a 1645 2007 363 15 0 .747 .59 2.13 .305 .762 .257 2.66 .381 -.033 1 24 CFY17b 1636 2007 372 15 0 .694 .50 2.06 .303 .834 .248 2.70 .425 -.035 1 25 CFY19a 1473 2007 535 22 0 .666 .47 1.71 .293 .894 .231 2.55 .305 -.012 1 26 CFY19b 1507 2007 501 20 2 .165 .35 1.73 .773 .115 .237 2.03 .099 -.020 1 27 CFY20a 1724 2007 284 12 0 .729 .73 1.58 .261 .780 .192 2.60 .344 -.002 1 28 CFY20b 1743 2007 265 11 0 .731 .82 1.74 .374 .853 .216 2.59 .429 -.031 1 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 9082 367 3 .660 .76 5.51 .379 .742 .224 2.80 .358 -.027