Mountain Research Station Site 4, Colorado - CO678 Additional Site Information Ricardo Villalba Thomas T. Veblen Reference: Ricardo Villalba, Thomas T. Veblen, John Ogden. 1994. Climatic Influences on the Growth of Subalpine Trees in the Colorado Front Range. Ecology, Vol. 75, issue 5, pp. 1450-1462, July 1994. DOI: 10.2307/1937468 Funding: US National Park Service's Global Change Program, US National Science Foundation, University of Colorado Council on Research and Creative Work Program on Environmental Quality and Global Ch Chronology file name : CO678.CRN Measurement file name : CO678.RWL Date checked : 20JAN22 Checked by : B. Bauer Beginning year : 1637 Ending year : 1983 Principal investigators: RICARDO VILLALBA THOMAS VEBLEN Site name : MT. RESEARCH STATION SITE 4 Site location : COLORADO Species information : PCEN ENGELMANN SPRUCE Latitude : 4003 Longitude : -10557 Elevation : 3160M Series intercorrelation: 0.585 Avg mean sensitivity : 0.219 Avg standard deviation : 0.266 Avg autocorrelation : 0.865 Number dated series : 37 Segment length tested : 50 Number problem segments: 15 Pct problem segments : 4.84 PART 5: CORRELATION OF SERIES BY SEGMENTS: Mountain Research Station 4 CPEN 09:10 Thu 20 Jan 2022 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 1625 1650 1675 1700 1725 1750 1775 1800 1825 1850 1875 1900 1925 1950 1674 1699 1724 1749 1774 1799 1824 1849 1874 1899 1924 1949 1974 1999 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 ee118 1750 1981 .49 .59 .61 .63 .78 .83 .64 .76 .75 2 ee118R 1755 1981 .41 .57 .69 .68 .76 .86 .74 .80 .78 3 ee13 1690 1845 .27A .30A .54 .53 .51 .60 4 ee222 1740 1982 .61 .75 .69 .74 .77 .73 .77 .81 .82 .66 5 ee229R 1755 1982 .63 .65 .72 .74 .70 .78 .82 .70 .63 6 ee23 1720 1981 .52 .61 .70 .64 .67 .66 .70 .72 .52 .49 .47 7 ee25 1800 1980 .66 .83 .80 .69 .66 .71 .69 8 ee262R 1820 1982 .53 .56 .60 .62 .71 .72 .77 9 ee27 1775 1981 .54 .65 .63 .75 .84 .68 .69 .70 10 ee278 1760 1982 .41 .32A .51 .64 .69 .73 .75 .79 .75 11 ee344 1780 1982 .53 .67 .75 .77 .79 .68 .62 .50 12 ee415 1770 1982 .41 .35 .43 .58 .76 .68 .52 .42 .29B 13 ee416 1770 1982 .43 .54 .69 .75 .81 .86 .75 .73 .74 14 ee437 1810 1982 .35 .45 .60 .76 .74 .87 .85 15 ee45 1760 1980 .62 .78 .80 .61 .64 .86 .88 .76 .73 16 ee46 1740 1981 .74 .77 .66 .64 .69 .71 .83 .73 .67 .64 17 ee590 1840 1982 .68 .70 .72 .75 .87 .82 18 ee590R 1785 1981 .61 .60 .65 .78 .85 .79 .87 .82 19 ee647 1810 1982 .24B .34 .51 .56 .40 .33 .34 20 ee667R 1830 1983 .41 .58 .62 .47 .44 .40 21 ee67 1790 1980 .47 .46 .48 .61 .72 .62 .74 .73 22 ee678R 1785 1983 .35 .45 .58 .70 .69 .58 .45 .45 23 ee90 1670 1981 .38 .36 .36B .53 .70 .73 .68 .56 .52 .66 .64 .67 .64 24 MR4-3300 1679 1851 .39 .57 .60 .66 .61 .40 .35 25 MR4-3302 1743 1929 .55 .59 .60 .66 .70 .68 .53 .54 26 MR4-3303 1726 1928 .61 .69 .75 .71 .74 .63 .44 .42 27 MR4-3308 1723 1894 .41 .40 .43 .33B .32B .35 .31A 28 MR4-3326 1737 1965 .50 .50 .20B .28A .48 .51 .60 .50 .43B 29 MR4-3327 1747 1965 .55 .53 .33 .32A .46 .60 .66 .64 .35B 30 MR4-3329 1710 1930 .43 .64 .58 .33 .41 .48 .58 .57 .50 31 MR4-3332 1637 1850 .68 .60 .57 .51 .47 .58 .45 .38 .38 32 MR4-3333 1637 1935 .71 .55 .51 .59 .60 .71 .64 .58 .78 .74 .43 .30A 33 MR4-3369 1739 1963 .43 .41 .53 .69 .51 .48 .68 .61 .45 34 MR4-3370 1724 1955 .42 .40 .62 .39 .44 .58 .68 .77 .58 .54 35 MR4-3371 1726 1952 .47 .54 .38 .49 .68 .61 .60 .38 .39 36 MR4-3372 1766 1909 .49 .43 .48 .55 .56 .43 37 MR4-3392 1799 1911 .61 .60 .63 .61 .41 Av segment correlation .69 .51 .42 .46 .54 .57 .52 .55 .59 .65 .68 .62 .63 .64 PART 7: DESCRIPTIVE STATISTICS: Mountain Research Station 4 CPEN 09:10 Thu 20 Jan 2022 Page 7 ----------------------------------------------------------------------------------------------------------------------------------- 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 ee118 1750 1981 232 9 0 .677 .49 1.81 .359 .899 .239 2.80 .362 -.032 1 2 ee118R 1755 1981 227 9 0 .694 .43 1.57 .299 .899 .250 2.64 .339 -.050 1 3 ee13 1690 1845 156 6 2 .474 .62 1.46 .323 .869 .243 2.80 .501 -.016 1 4 ee222 1740 1982 243 10 0 .705 .43 .97 .193 .848 .193 2.56 .334 -.039 1 5 ee229R 1755 1982 228 9 0 .683 .48 1.16 .198 .801 .192 2.65 .382 -.021 1 6 ee23 1720 1981 262 11 0 .606 .39 1.26 .306 .943 .221 2.74 .419 .029 1 7 ee25 1800 1980 181 7 0 .697 .33 .58 .085 .506 .200 2.55 .401 -.046 1 8 ee262R 1820 1982 163 7 0 .611 .35 1.01 .205 .918 .212 2.70 .426 -.005 1 9 ee27 1775 1981 207 8 0 .674 .52 1.74 .378 .945 .192 2.67 .460 .015 1 10 ee278 1760 1982 223 9 1 .636 .56 1.29 .221 .866 .167 2.59 .438 -.002 1 11 ee344 1780 1982 203 8 0 .636 .40 .99 .184 .887 .181 2.60 .384 -.021 1 12 ee415 1770 1982 213 9 1 .514 .42 .87 .157 .831 .180 2.51 .330 -.008 1 13 ee416 1770 1982 213 9 0 .692 .52 1.05 .216 .841 .193 2.64 .387 -.025 2 14 ee437 1810 1982 173 7 0 .678 .55 2.09 .244 .686 .215 2.74 .382 -.062 2 15 ee45 1760 1980 221 9 0 .731 .47 1.31 .283 .924 .206 2.61 .419 -.036 2 16 ee46 1740 1981 242 10 0 .694 .63 2.20 .437 .898 .225 2.68 .457 -.016 1 17 ee590 1840 1982 143 6 0 .747 .92 1.67 .231 .641 .163 2.55 .353 -.037 1 18 ee590R 1785 1981 197 8 0 .748 .56 .95 .149 .589 .197 2.44 .321 -.073 1 19 ee647 1810 1982 173 7 1 .384 .59 2.70 .354 .908 .155 2.69 .470 -.016 1 20 ee667R 1830 1983 154 6 0 .484 .29 .61 .120 .804 .196 2.59 .436 -.067 1 21 ee67 1790 1980 191 8 0 .601 .54 1.35 .240 .813 .204 2.78 .395 -.030 2 22 ee678R 1785 1983 199 8 0 .533 .38 1.16 .212 .915 .169 2.56 .396 -.032 1 23 ee90 1670 1981 312 13 1 .583 .32 1.52 .217 .898 .230 2.57 .375 -.042 1 24 MR4-3300 1679 1851 173 7 0 .471 .75 1.69 .441 .875 .259 2.50 .373 .018 1 25 MR4-3302 1743 1929 187 8 0 .607 .45 1.44 .387 .915 .301 2.65 .409 -.019 1 26 MR4-3303 1726 1928 203 8 0 .622 .41 1.17 .301 .881 .296 2.59 .286 -.049 1 27 MR4-3308 1723 1894 172 7 3 .349 .32 1.76 .319 .921 .250 2.65 .345 .023 1 28 MR4-3326 1737 1965 229 9 3 .445 .23 1.02 .148 .840 .247 2.72 .493 -.065 1 29 MR4-3327 1747 1965 219 9 2 .470 .31 .87 .142 .764 .219 2.61 .344 -.019 1 30 MR4-3329 1710 1930 221 9 0 .470 .22 1.06 .185 .894 .231 2.82 .406 -.053 1 31 MR4-3332 1637 1850 214 9 0 .518 .32 1.96 .334 .952 .206 2.72 .485 .026 1 32 MR4-3333 1637 1935 299 12 1 .558 .30 1.81 .337 .965 .242 2.68 .421 -.019 1 33 MR4-3369 1739 1963 225 9 0 .493 .45 1.41 .383 .946 .237 2.56 .335 .039 2 34 MR4-3370 1724 1955 232 10 0 .521 .50 1.50 .408 .945 .243 2.74 .484 .005 1 35 MR4-3371 1726 1952 227 9 0 .498 .38 1.21 .314 .929 .245 2.72 .384 -.031 1 36 MR4-3372 1766 1909 144 6 0 .468 .35 1.19 .296 .930 .243 2.75 .422 -.006 1 37 MR4-3392 1799 1911 113 5 0 .521 .21 .64 .138 .923 .262 2.66 .538 -.028 1 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 7614 310 15 .585 .44 2.70 .266 .865 .219 2.82 .400 -.022