Driftless Oaks Perkins, Wisconsin - WI045 Additional Site Information Evan Larson, Sara Allen, Chris Underwood Reference: Evan R. Larson, Sara A. Allen, Chris A. Underwood. 2020. The Driftless Oaks: A new network of tree-ring chronologies to improve regional perspectives of drought in the Upper Midwest, USA. Progress in Physical Geography, Vol. 45, Issue 3, pp. 375-406, June 2021. doi: 10.1177/0309133320960670 Keywords: Drought, Driftless Area, North American Drought Atlas, Dendrochronology, crop yield, Iowa, Wisconsin Funding Sources: University of Wisconsin Water Resources Institute, University of Wisconsin - Platteville Pioneer Academic Center for Community Engangement WR13R003 COFECHA output: Chronology file name : WI045.CRN Measurement file name : WI045.RWL Date checked : 11AUG21 Checked by : B. Bauer Beginning year : 1715 Ending year : 2013 Principal investigators: E. Larson S. Allen C. Underwood Site name : Driftless Oaks Perkins Site location : Wisconsin Species information : QUMA BURR OAK Latitude : 4259 Longitude : -09021 Elevation : 363M Series intercorrelation: 0.594 Avg mean sensitivity : 0.216 Avg standard deviation : 0.955 Avg autocorrelation : 0.677 Number dated series : 8 Segment length tested : 50 Number problem segments: 0 Pct problem segments : 0.00 PART 5: CORRELATION OF SERIES BY SEGMENTS: Perkins 10:23 Wed 11 Aug 2021 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 1850 1875 1900 1925 1950 1975 1899 1924 1949 1974 1999 2024 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 PRK001A 1936 2013 .69 .73 .63 2 PRK001B 1934 2013 .56 .52 .46 3 PRK002A 1715 2013 .71 .77 .81 .79 .74 .73 4 PRK002B 1871 2013 .59 .50 .36 .58 .66 .56 5 PRK003A 1866 2013 .59 .62 .60 .57 .59 .57 6 PRK003B 1882 2013 .40 .50 .62 .68 .48 7 PRK004A 1907 2013 .58 .51 .60 .53 8 PRK004B 1882 2013 .49 .49 .67 .75 .66 Av segment correlation .63 .55 .56 .62 .66 .58 PART 7: DESCRIPTIVE STATISTICS: Perkins 10:23 Wed 11 Aug 2021 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 PRK001A 1936 2013 78 3 0 .661 4.50 13.42 1.812 .648 .194 2.58 .585 .040 1 2 PRK001B 1934 2013 80 3 0 .536 3.51 5.57 .822 .521 .169 2.70 .476 -.040 1 3 PRK002A 1715 2013 299 6 0 .718 1.45 3.68 .714 .873 .167 2.72 .428 -.016 1 4 PRK002B 1871 2013 143 6 0 .537 2.20 4.06 .717 .731 .178 2.89 .546 -.065 1 5 PRK003A 1866 2013 148 6 0 .568 2.08 5.12 .715 .560 .235 2.75 .521 -.021 1 6 PRK003B 1882 2013 132 5 0 .542 2.63 5.02 .940 .577 .271 2.61 .545 .044 2 7 PRK004A 1907 2013 107 4 0 .569 2.62 6.84 1.503 .718 .297 2.72 .416 -.024 1 8 PRK004B 1882 2013 132 5 0 .614 2.52 8.98 1.174 .484 .271 2.83 .357 -.026 1 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 1119 38 0 .594 2.37 13.42 .955 .677 .216 2.89 .474 -.016