Caddo Gap, Arkansas - AR076 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 located on a stream terrace about five feet above the level of Caddo Creek. Data from a growth-and-yield study started in 1987 and updated at +/- 5-year intervals since. The stand was damaged in an ice storm in December 2000. Aspect is northwest; slope is about 5. Index values computed by ARSTAN. Reference: Douglas J. Stevenson, Thomas B. Lynch, Pradip Saud, Robert Heineman, Randal Holeman, Dennis Wilson, Keith Anderson, Chris Cerny, James M. Guldin. 2016. Winter in the Ouchitas - A severe winter storm signature in Pinus echinata in the Ouachita Mountains of Oklahoma and Arkansas, USA. Dendrochronologia, 37, 107-115. doi: 10.1016/j.dendro.2016.01.001 COFECHA output: Chronology file name : AR076.CRN Measurement file name : AR076.RWL Date checked : 18AUG14 Checked by : B. Bauer Beginning year : 1913 Ending year : 2009 Principal investigators: D. Stevenson T. Lynch R. Heineman R. Holeman D. Wilson K. Anderson and J. Guldin Site name : Caddo Gap Site location : Arkansas Species information : PIEC SHORTLEAF PINE Latitude : 3427 Longitude : -09330 Elevation : 248M Series intercorrelation: 0.689 Avg mean sensitivity : 0.300 Avg standard deviation : 0.871 Avg autocorrelation : 0.648 Number dated series : 17 Segment length tested : 50 Number problem segments: 0 Pct problem segments : 0.00 PART 5: CORRELATION OF SERIES BY SEGMENTS: Caddo Gap 11:42 Mon 18 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 p188t001 1942 2007 .81 .80 .77 2 p188t002 1947 2007 .67 .69 .68 3 p188t003 1931 2009 .77 .77 .69 4 p188t004 1936 2009 .78 .75 .71 5 p188t007 1942 2009 .80 .87 .80 6 p188t015 1948 2009 .65 .69 .64 7 p188t017 1930 2009 .57 .76 .66 8 p188t020 1941 2007 .83 .73 .61 9 p188t023 1953 2007 .69 .67 10 p189t002 1932 2007 .74 .71 .54 11 p189t019 1956 2007 .71 .67 12 p190t001 1913 2007 .48 .58 .59 13 p190t003 1959 2007 .66 14 p190t004 1941 2004 .70 .67 .68 15 p190t008 1951 2007 .80 .80 16 p191t006 1954 2007 .77 .76 17 p191t016 1947 2007 .79 .74 .66 Av segment correlation .72 .73 .68 PART 7: DESCRIPTIVE STATISTICS: Caddo Gap 11:42 Mon 18 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 p188t001 1942 2007 66 3 0 .821 1.44 2.82 .475 .431 .287 2.73 .464 -.033 1 2 p188t002 1947 2007 61 3 0 .711 2.05 4.93 .947 .703 .328 2.62 .548 -.069 1 3 p188t003 1931 2009 79 3 0 .719 1.64 5.19 .947 .862 .255 2.46 .407 .031 1 4 p188t004 1936 2009 74 3 0 .745 1.90 4.21 .884 .702 .290 2.57 .478 .068 1 5 p188t007 1942 2009 68 3 0 .753 2.32 5.76 1.280 .778 .288 2.60 .478 -.027 1 6 p188t015 1948 2009 62 3 0 .656 2.24 5.48 1.092 .683 .325 2.72 .570 .005 1 7 p188t017 1930 2009 80 3 0 .608 2.44 5.40 .924 .621 .256 2.68 .465 .015 1 8 p188t020 1941 2007 67 3 0 .653 1.81 3.38 .569 .624 .235 2.38 .399 -.040 1 9 p188t023 1953 2007 55 2 0 .684 2.30 3.55 .630 .378 .263 2.32 .372 .025 1 10 p189t002 1932 2007 76 3 0 .600 1.55 5.28 1.079 .829 .355 2.99 .656 .047 1 11 p189t019 1956 2007 52 2 0 .709 2.13 5.44 1.308 .799 .319 2.78 .587 -.027 2 12 p190t001 1913 2007 95 3 0 .506 1.30 3.77 .738 .683 .382 2.62 .453 -.030 1 13 p190t003 1959 2007 49 1 0 .659 2.59 5.79 .952 .474 .341 2.47 .414 -.077 2 14 p190t004 1941 2004 64 3 0 .675 1.87 4.29 .919 .654 .341 2.54 .432 -.053 1 15 p190t008 1951 2007 57 2 0 .804 2.18 3.44 .751 .438 .339 2.46 .553 -.063 1 16 p191t006 1954 2007 54 2 0 .758 2.05 3.57 .586 .550 .233 2.55 .484 -.010 1 17 p191t016 1947 2007 61 3 0 .721 2.04 3.81 .738 .622 .240 2.75 .622 -.049 1 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 1120 45 0 .689 1.95 5.79 .871 .648 .300 2.99 .492 -.014