Dalton Highway Mile Post 235, Alaska - AK085 Additional Site Information Andrea Lloyd and Chris Fastie Purpose of Collection: Climatology - temperature analyses Cores are available at: Middlebury College, Middlebury VT Notes: Treeline site at mile 235 along the Dalton Highway. Stand is an open stand of old white spruce (Picea glauca). Data not yet published Chronology file name : AK085.CRN Measurement file name : AK085.RWL Date checked : 11DEC06 Checked by : B. Bauer Beginning year : 1806 Ending year : 2005 Principal investigators: Andrea Lloyd Chris Fastie Site name : Dalton Highway Mile Post 235 Site location : Alaska Species information : PCGL WHITE SPRUCE Latitude : 6802 Longitude : -14941 Elevation : 810M Series intercorrelation: 0.640 Avg mean sensitivity : 0.210 Avg standard deviation : 0.376 Avg autocorrelation : 0.709 Number dated series : 22 Segment length tested : 50 Number problem segments: 2 Pct problem segments : 1.56 PART 5: CORRELATION OF SERIES BY SEGMENTS: DH235 16:36 Mon 11 Dec 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 1800 1825 1850 1875 1900 1925 1950 1975 1849 1874 1899 1924 1949 1974 1999 2024 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 235-7 1866 2005 .53 .66 .71 .80 .82 .81 2 235-8 1814 2005 .27A .42 .45 .49 .53 .64 .82 .77 3 235-10 1856 2005 .60 .76 .65 .55 .73 .74 4 235-20 1847 2005 .49 .57 .50 .51 .38 .57 .58 5 235-21AB 1860 2005 .61 .79 .76 .73 .65 .62 6 235-22 1886 2005 .58 .60 .76 .74 .73 7 235-23B 1874 2005 .38 .38 .61 .83 .81 .81 8 235-26 1840 2005 .53 .64 .76 .82 .83 .78 .73 9 235-40 1920 2005 .66 .62 .56 .59 10 235-41 1923 2004 .66 .72 .63 .63 11 235-42AB 1847 2005 .53 .64 .81 .81 .70 .60 .61 12 245-43 1849 2004 .76 .74 .78 .68 .64 .81 .80 13 235-44AB 1843 2005 .35 .51 .42 .54 .73 .74 .74 14 235-45 1875 2005 .83 .85 .80 .75 .74 15 235-46 1850 2004 .46 .76 .74 .60 .48 .49 16 235-47 1906 2005 .70 .71 .79 .80 17 235-48 1806 2005 .38 .60 .61 .77 .80 .66 .71 .70 18 235-52 1909 2005 .49 .69 .75 .74 19 235-53 1843 2005 .52 .59 .68 .71 .57 .62 .58 20 235-54 1857 2005 .28B .59 .71 .68 .57 .59 21 235-55 1925 2004 .53 .79 .79 22 235-56 1879 2005 .77 .78 .62 .60 .61 Av segment correlation .33 .53 .54 .67 .68 .67 .70 .69 PART 7: DESCRIPTIVE STATISTICS: DH235 16:36 Mon 11 Dec 2006 Page 8 ----------------------------------------------------------------------------------------------------------------------------------- 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 () --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- 1 235-7 1866 2005 140 6 0 .710 .84 1.38 .259 .677 .207 2.44 .295 .026 2 2 235-8 1814 2005 192 8 1 .523 .85 2.82 .439 .804 .206 2.61 .391 -.034 1 3 235-10 1856 2005 150 6 0 .653 .85 2.40 .432 .811 .233 2.74 .454 .015 3 4 235-20 1847 2005 159 7 0 .539 .84 2.25 .360 .649 .241 2.90 .341 -.079 1 5 235-21AB 1860 2005 146 6 0 .681 1.20 3.15 .534 .750 .230 2.67 .461 .021 1 6 235-22 1886 2005 120 5 0 .631 1.15 1.95 .343 .742 .167 2.48 .377 .022 2 7 235-23B 1874 2005 132 6 0 .653 1.22 2.66 .459 .749 .223 2.46 .333 -.013 1 8 235-26 1840 2005 166 7 0 .690 .92 2.82 .436 .810 .219 2.52 .272 -.022 1 9 235-40 1920 2005 86 4 0 .610 1.28 2.22 .366 .631 .192 2.40 .360 -.009 1 10 235-41 1923 2004 82 4 0 .601 1.53 3.88 .573 .654 .196 2.63 .355 -.089 1 11 235-42AB 1847 2005 159 7 0 .676 1.00 1.90 .310 .635 .213 2.63 .398 .040 1 12 245-43 1849 2004 156 7 0 .741 .90 1.89 .355 .677 .248 2.58 .349 .011 1 13 235-44AB 1843 2005 163 7 0 .571 1.31 3.13 .467 .786 .183 2.69 .477 .001 1 14 235-45 1875 2005 131 5 0 .770 .92 1.89 .269 .368 .234 2.76 .436 .002 1 15 235-46 1850 2004 155 6 0 .570 .86 1.96 .273 .728 .190 2.51 .341 .014 1 16 235-47 1906 2005 100 4 0 .751 1.15 1.69 .221 .500 .149 2.47 .384 -.028 1 17 235-48 1806 2005 200 8 0 .632 .65 1.58 .267 .725 .238 2.45 .292 -.031 1 18 235-52 1909 2005 97 4 0 .628 1.30 3.86 .836 .933 .201 2.62 .426 .021 2 19 235-53 1843 2005 163 7 0 .617 .88 1.97 .327 .773 .187 2.51 .315 -.010 1 20 235-54 1857 2005 149 6 1 .564 .69 1.68 .306 .801 .204 2.65 .414 .012 1 21 235-55 1925 2004 80 3 0 .641 .99 1.73 .262 .614 .181 2.74 .526 -.023 1 22 235-56 1879 2005 127 5 0 .699 1.04 1.82 .310 .581 .206 2.69 .432 .008 1 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 3053 128 2 .640 .98 3.88 .376 .709 .210 2.90 .378 -.006