Pilot Knob, Arkansas - AR079 Additional Site Information D. Stevenson T. Lynch R. Heineman R. Holeman D. Wilson K. Anderson and J. Guldin Purpose of Collection: Climatology - severe weather Detrending: First - Negative exponential or linear regression of any slope Second - Linear regression with negative slope Cores are stored at: Oklahoma State University Department of Natural Resources and Environmental Management Notes: Site is rocky upland. Aspect is south; slope is about 10. Stand is part of a growth-and-yield study ongoing since 1987 with remeasurement at +/- 5-year intervals. Stand suffered moderate damage in December 2000 ice storm. Missing values are represented by -8888 in the ringwidth data file COFECHA output: Chronology file name : AR079.CRN Measurement file name : AR079.RWL Date checked : 19AUG14 Checked by : B. Bauer Beginning year : 1943 Ending year : 2008 Principal investigators: D. Stevenson T. Lynch R. Heineman R. Holeman D. Wilson K. Anderson and J. Guldin Site name : Pilot Knob Site location : Arkansas Species information : PIEC SHORTLEAF PINE Latitude : 3500 Longitude : -09403 Elevation : 244M Series intercorrelation: 0.676 Avg mean sensitivity : 0.322 Avg standard deviation : 1.174 Avg autocorrelation : 0.748 Number dated series : 16 Segment length tested : 50 Number problem segments: 1 Pct problem segments : 2.56 PART 5: CORRELATION OF SERIES BY SEGMENTS: Pilot Knob 16:24 Tue 19 Aug 2014 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 1925 1950 1975 1974 1999 2024 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 p246t026 1951 2007 .84 .71 2 p247t002 1948 2007 .80 .80 .66 3 p247t003 1947 1991 .67 4 p247t007 1952 2007 .71 .66 5 p247t011 1951 2007 .81 .67 6 p247t022 1947 2007 .79 .80 .77 7 p247t040 1949 2007 .68 .68 .69 8 p248t001 1948 2007 .67 .67 .39 9 p248t004 1948 2007 .86 .86 .73 10 p248t014 1954 2007 .82 .82 11 p248t017 1950 2008 .31B .34 12 p248t020 1952 1999 .68 13 p248t022 1948 2007 .79 .79 .73 14 p248t065 1948 2007 .78 .76 .73 15 p265t001 1946 2007 .81 .78 .64 16 p265t007 1943 2007 .78 .78 .74 Av segment correlation .76 .74 .66 PART 7: DESCRIPTIVE STATISTICS: Pilot Knob 16:24 Tue 19 Aug 2014 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 p246t026 1951 2007 57 2 0 .736 1.87 4.15 .812 .608 .302 2.69 .500 -.077 1 2 p247t002 1948 2007 60 3 0 .705 1.93 6.28 1.501 .796 .354 2.81 .633 -.081 3 3 p247t003 1947 1991 45 1 0 .672 1.63 6.48 1.630 .910 .420 2.60 .717 -.051 1 4 p247t007 1952 2007 56 2 0 .669 1.84 4.59 .938 .745 .309 2.64 .524 -.041 2 5 p247t011 1951 2007 57 2 0 .669 1.89 3.70 .734 .633 .289 2.37 .341 -.034 2 6 p247t022 1947 2007 61 3 0 .797 1.50 6.30 1.346 .887 .352 2.54 .504 .027 1 7 p247t040 1949 2007 59 3 0 .684 1.71 3.38 .819 .597 .379 2.51 .457 -.097 1 8 p248t001 1948 2007 60 3 0 .468 1.72 7.43 1.475 .806 .341 2.40 .406 -.017 1 9 p248t004 1948 2007 60 3 0 .746 1.62 4.71 .764 .782 .245 2.53 .499 -.040 2 10 p248t014 1954 2007 54 2 0 .811 1.50 3.07 .544 .574 .266 2.54 .527 .036 1 11 p248t017 1950 2008 59 2 1 .243 .00 3.44 3.644 .844 .426 2.59 .488 -.041 3 12 p248t020 1952 1999 48 1 0 .677 1.20 2.86 .686 .679 .363 2.72 .676 -.094 1 13 p248t022 1948 2007 60 3 0 .730 1.38 4.43 .805 .785 .345 2.43 .383 -.039 1 14 p248t065 1948 2007 60 3 0 .758 1.65 4.86 .903 .742 .253 2.71 .419 -.005 1 15 p265t001 1946 2007 62 3 0 .680 1.66 4.98 1.059 .771 .301 2.60 .432 -.054 1 16 p265t007 1943 2007 65 3 0 .760 2.26 5.19 1.067 .801 .244 2.67 .482 -.079 1 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 923 39 1 .676 1.59 7.43 1.174 .748 .322 2.81 .493 -.043