Railroad Ridge, Idaho - ID012 Additional Site Information Dana Perkins File updated May 2006, addition of cores 15D and 15E, which were not included in the original ITRDB submission. Also core 15C truncated at year 1100, and core ID 24B corrected to 24A. Purpose of Collection: Ecology - insect outbreaks Standardized with smoothing splines or neg exp. (see Perkins and Swetnam 1996) Cores Located at: Forestry and Range Sciences Laboratory Pacific Northwest Research Station, USDA-FS 1401 Gekeler Lane La Grande, OR 97850 We dated a historic mountain pine beetle epidemic in climax whitebark pine using dendrochronology methods, and demonstrated utility of whitebark for dendroclimate reconstructions References: Biondi, F., D.L. Perkins, D.R. Cayan, and M.K. Hughes. 1999. July Temperature during the second millennium reconstructed from Idaho tree rings. Geophysical Research Letters, Vol. 26, No. 10, pp. 1445-1448, May 15 1999. Perkins, D. L. and Swetnam, T.W. 1996. A dendroecological assessment of whitebark pine in the Sawtooth - Salmon River region, Idaho. Canadian Journal of Forest Research. 26:2123-2133. COFECHA File_name Date Time_span Series Spline Seg Lag N_Seg Probs Prob% XCorr MnSens C/Var MnMsmt MnStDv MnACorr id012.rwl 03May06 726 1992 24 32 50 25 313 20 6.39 .568 .198 35.19 .491 .190 .756 Run RR Title: Railroad Ridge 2006 update PART 5: CORRELATION OF SERIES BY SEGMENTS: Railroad Ridge 2006 update 10:43 Wed 03 May 2006 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 850 875 900 925 950 975 1000 1025 1050 1075 1100 1125 1150 1175 1200 1225 1250 1275 1300 1325 899 924 949 974 999 1024 1049 1074 1099 1124 1149 1174 1199 1224 1249 1274 1299 1324 1349 1374 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 3 RRR05C 1319 1992 .38 .41 8 RRR15A 1014 1529 .61 .60 .71 .80 .87 .83 .75 .83 .89 .91 .81 .62 .59 .44 9 RRR15B 726 1295 .66 .68 .63 .68 .66 .55 .57 .79 .80 .79 .80 .80 .70 .72 .81 .86 .84 10 RRR15C 1100 1605 .80 .70 .68 .74 .78 .85 .86 .72 .52 .17B 12 RRR15E 853 1099 .66 .68 .63 .68 .66 .50 .57 .81 .77 13 RRR19A 1321 1658 .45 .50 Av segment correlation .66 .68 .63 .68 .66 .53 .58 .74 .76 .80 .83 .78 .71 .76 .82 .87 .84 .67 .48 .38 PART 5: CORRELATION OF SERIES BY SEGMENTS: Railroad Ridge 2006 update 10:43 Wed 03 May 2006 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 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 RRR05A 1598 1990 .65 .66 .69 .63 .57 .60 .69 .67 .49 .57 .57 2 RRR05B 1443 1990 .64 .59 .33 .47 .46 .41 .68 .78 .71 .48 .52 .66 .78 .71 .47 .42 .54 3 RRR05C 1319 1992 .72 .61 .28A .49 .55 .39 .41 .59 .71 .83 .84 .76 .56 .50 .48 .52 .59 .51 .50 .51 4 RRR06A 1605 1990 .46 .52 .62 .72 .64 .73 .70 .52 .60 .67 5 RRR06B 1640 1992 .41 .35 .60 .54 .77 .77 .56 .60 .71 6 RRR07A 1688 1990 .52 .53 .65 .69 .57 .54 .43 7 RRR07B 1797 1981 .68 .65 .54 8 RRR15A 1014 1529 .66 .72 .55 .58 .45 .49 .49 10 RRR15C 1100 1605 .39 .58 .46 .46 .42B .46 .65 .77 .73 .70 11 RRR15D 1530 1992 .56 .56 .49 .57 .54 .52 .42 .33 .53 .42 .20B .48 .34 13 RRR19A 1321 1658 .34 .32A .38 .55 .58 .48 .66 .70 .44 .52 .58 .52 14 RRR19B 1369 1600 .72 .76 .42 .59 .61 .41 .54 .60 .45 .42 15 RRR22A 1758 1992 .47 .58 .69 .63 16 RRR24A 1811 1987 .65 .52 17 RRR24B 1811 1987 .61 .42 18 RRR26A 1620 1881 .60 .58 .61 .70 .64 .78 .74 .58 .63 .54 19 RRR26B 1541 1846 .61 .62 .65 .66 .56 .54 .72 .73 .66 .66 .65 .49 20 RRR27A 1525 1927 .38 .46 .35 .44 .55 .37 .34 .53 .65 .61 .51 .42 .40 21 RRR27B 1675 1860 .47 .51 .30A .32A .47 .40 .52 22 RRR28A 1350 1512 .57 .65 .54 .49 .45 .35 23 RRR28B 1451 1704 .64 .54 .67 .60 .52 .62 .49 .38 .56 .57 Av segment correlation .57 .61 .44 .54 .54 .43 .56 .59 .55 .59 .61 .57 .52 .55 .56 .64 .61 .52 .55 .52 PART 5: CORRELATION OF SERIES BY SEGMENTS: Railroad Ridge 2006 update 10:43 Wed 03 May 2006 Page 7 ----------------------------------------------------------------------------------------------------------------------------------- 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 1899 1924 1949 1974 1999 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 RRR05A 1598 1990 .52 .56 .38B .56 .76 2 RRR05B 1443 1990 .62 .67 .40 .54 .64 3 RRR05C 1319 1992 .49 .33B .23B .60 .74 4 RRR06A 1605 1990 .65 .62 .50 .60 .53 5 RRR06B 1640 1992 .59 .63 .68 .65 .57 6 RRR07A 1688 1990 .56 .70 .76 .73 .58 7 RRR07B 1797 1981 .37 .49 .40 .32A .28A 11 RRR15D 1530 1992 .33A .41 .53 .49 .36 15 RRR22A 1758 1992 .49 .27B .51 .71 .59 16 RRR24A 1811 1987 .33B .26B .35 .49 .52 17 RRR24B 1811 1987 .26B .46B .64 .60 .53 18 RRR26A 1620 1881 .49 20 RRR27A 1525 1927 .46 .28A .29A 24 RRR30A1 1850 1992 .34 .42 .54 .54 .44 Av segment correlation .46 .47 .48 .57 .55 PART 7: DESCRIPTIVE STATISTICS: Railroad Ridge 2006 update 10:43 Wed 03 May 2006 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 RRR05A 1598 1990 393 16 1 .594 .52 .95 .142 .740 .160 2.58 .354 .000 1 2 RRR05B 1443 1990 548 22 0 .572 .55 1.37 .230 .876 .164 2.55 .291 .020 3 3 RRR05C 1319 1992 674 27 3 .548 .52 1.48 .274 .922 .166 2.56 .326 -.005 2 4 RRR06A 1605 1990 386 15 0 .594 .63 1.17 .180 .727 .170 2.58 .318 -.009 1 5 RRR06B 1640 1992 353 14 0 .604 .50 1.04 .159 .772 .171 2.64 .337 .000 2 6 RRR07A 1688 1990 303 12 0 .600 .76 1.21 .161 .560 .154 2.71 .427 -.017 1 7 RRR07B 1797 1981 185 8 2 .420 .42 .98 .188 .870 .177 2.60 .412 -.003 1 8 RRR15A 1014 1529 516 21 0 .696 .28 .69 .106 .676 .243 2.51 .299 -.008 2 9 RRR15B 726 1295 570 17 0 .732 .37 .94 .135 .680 .248 2.74 .364 -.007 2 10 RRR15C 1100 1605 506 20 2 .649 .29 .69 .119 .726 .241 2.57 .289 -.020 1 11 RRR15D 1530 1992 463 18 2 .436 .42 1.10 .176 .714 .257 2.54 .361 -.049 1 12 RRR15E 853 1099 247 9 0 .664 .49 1.23 .196 .773 .220 2.61 .327 -.015 1 13 RRR19A 1321 1658 338 14 1 .476 .35 .84 .139 .799 .200 2.75 .440 -.041 1 14 RRR19B 1369 1600 232 10 0 .574 .34 1.15 .187 .872 .185 2.54 .354 -.001 1 15 RRR22A 1758 1992 235 9 1 .547 .62 1.05 .137 .503 .179 2.61 .372 -.028 1 16 RRR24A 1811 1987 177 7 2 .443 1.07 2.75 .449 .837 .183 2.61 .461 -.045 1 17 RRR24B 1811 1987 177 7 2 .515 .85 1.55 .221 .681 .165 2.71 .434 -.041 1 18 RRR26A 1620 1881 262 11 0 .642 .40 .91 .122 .606 .212 2.50 .325 -.024 1 19 RRR26B 1541 1846 306 12 0 .614 .46 .95 .152 .720 .193 2.56 .350 -.007 1 20 RRR27A 1525 1927 403 16 2 .433 .51 1.83 .290 .885 .185 2.87 .391 -.014 2 21 RRR27B 1675 1860 186 7 2 .418 .45 .89 .146 .728 .180 2.70 .467 -.007 1 22 RRR28A 1350 1512 163 6 0 .495 .47 1.37 .243 .829 .220 2.51 .360 -.014 1 23 RRR28B 1451 1704 254 10 0 .554 .69 1.82 .434 .892 .213 2.44 .283 -.005 2 24 RRR30A1 1850 1992 143 5 0 .440 .42 .68 .100 .476 .191 2.57 .393 -.016 1 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 8020 313 20 .568 .49 2.75 .190 .756 .198 2.87 .352 -.013