Driftless Oaks Yellow River State Forest update, Iowa - IA038 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 Notes: Yellow River State Forest update, 43.057N, 91.277W, 295m. Funding Sources: University of Wisconsin Water Resources Institute, University of Wisconsin - Platteville Pioneer Academic Center for Community Engangement WR13R003 COFECHA output: Chronology file name : IA038.CRN Measurement file name : IA038.RWL Date checked : 09AUG21 Checked by : B. Bauer Beginning year : 1869 Ending year : 2017 Principal investigators: E. Larson S. Allen C. Underwood Site name : Driftless Oaks Yellow River State Forest update Site location : Iowa Species information : QUAL WHITE OAK Latitude : 4303 Longitude : -09117 Elevation : 295M Series intercorrelation: 0.605 Avg mean sensitivity : 0.211 Avg standard deviation : 0.421 Avg autocorrelation : 0.639 Number dated series : 16 Segment length tested : 50 Number problem segments: 2 Pct problem segments : 4.08 PART 5: CORRELATION OF SERIES BY SEGMENTS: Yellow River update 16:01 Mon 09 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 1875 1900 1925 1950 1975 1924 1949 1974 1999 2024 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 YRF001a 1933 2017 .66 .81 .69 2 YRF001b 1974 2016 .60 3 YRP002a 1980 2017 .52 4 YRF003b 1971 2017 .63 5 YRP100b 1946 2017 .79 .82 .71 6 YRP102a 1926 2017 .66 .73 .67 7 YRF200a 1869 2017 .52 .53 .57 .47 .26A 8 YRF202a 1953 2017 .52 .62 9 YRP202B 1945 2017 .47 .43 .39 10 YRF301a 1879 2017 .74 .74 .70 .61 .50 11 YRP301b 1879 2017 .78 .55 .38 .49 .30A 12 YRP302a 1908 2017 .76 .77 .80 .80 13 YRF302b 1927 2017 .67 .67 .71 14 YRF303a 1929 2017 .79 .80 .69 15 YRF303B 1882 2016 .59 .61 .77 .61 .46 16 YRF304a 1960 2017 .58 .41 Av segment correlation .66 .64 .66 .64 .55 PART 7: DESCRIPTIVE STATISTICS: Yellow River update 16:01 Mon 09 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 YRF001a 1933 2017 85 3 0 .651 1.17 2.19 .336 .435 .228 2.59 .437 .005 1 2 YRF001b 1974 2016 43 1 0 .603 1.33 2.17 .333 .422 .183 2.64 .552 .008 2 3 YRP002a 1980 2017 38 1 0 .519 1.49 3.05 .545 .624 .230 2.84 .717 -.053 1 4 YRF003b 1971 2017 47 1 0 .631 1.08 2.04 .371 .716 .199 2.72 .568 .120 1 5 YRP100b 1946 2017 72 3 0 .752 1.64 3.24 .481 .565 .214 2.59 .514 -.025 2 6 YRP102a 1926 2017 92 3 0 .648 1.74 3.95 .591 .500 .246 2.43 .405 .011 1 7 YRF200a 1869 2017 149 5 1 .472 1.11 2.68 .411 .727 .199 2.62 .340 -.004 2 8 YRF202a 1953 2017 65 2 0 .535 1.88 3.68 .635 .657 .177 2.72 .513 -.005 1 9 YRP202B 1945 2017 73 3 0 .457 1.12 2.13 .379 .808 .156 2.60 .426 -.018 1 10 YRF301a 1879 2017 139 5 0 .659 .94 2.15 .366 .751 .207 2.58 .369 .009 1 11 YRP301b 1879 2017 139 5 1 .491 .93 1.91 .357 .783 .186 2.69 .397 .026 1 12 YRP302a 1908 2017 110 4 0 .762 1.10 2.77 .403 .555 .264 2.78 .582 .006 1 13 YRF302b 1927 2017 91 3 0 .694 1.31 3.26 .532 .655 .220 2.52 .381 -.065 1 14 YRF303a 1929 2017 89 3 0 .759 1.46 2.71 .377 .398 .209 2.61 .503 -.025 1 15 YRF303B 1882 2016 135 5 0 .601 1.02 2.01 .409 .757 .219 2.54 .475 -.032 1 16 YRF304a 1960 2017 58 2 0 .376 .72 2.28 .308 .523 .221 2.31 .356 -.029 1 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 1425 49 2 .605 1.21 3.95 .421 .639 .211 2.84 .448 -.005