Marshall Forest, Georgia - ga018 Additional Site Information T.A. Knight Notes: Some raw data here might have values of -8888 for years where the rings were distorted or otherwise not useful for dendroclimatology. The latest version of ARSTAN reads these as dummy variables and can in-fill these gaps. See the citation above for standardization methods. The ARSTAN standardization menu is below: opt plt tree-ring data type 1 !tucson ring-width format missing data in gap -9 0 !missing values estimated (no plots) data transformation 4 0 !spread/level power transform (no plots) first detrending 2 0 0 !1st-neg expon curve (k>0), no = opt 5 second detrending 6 0 0 !2nd-horizontal line through mean robust detrending 1 !non-robust detrending methods used interactive detrend 2 !interactive detrending used index calculation 2 !residuals or differences (rt-gt) ar modeling method 1 0 !non-robust autoregressive modeling pooled ar order 0 0 !minimum aic pooled ar model order fit series ar order 0 !pooled ar order fit to all series mean chronology 2 0 0 0 !robust (biweight) mean chronology stabilize variance 1 !rbar weighted stabilization method common period years 1880 2000 !first and last years of common period site-tree-core mask SSSTTC !site-tree-core separation mask running rbar 50 25 0 !running rbar window/overlap (no plots) printout option 2 !summary & series statistics printed core series save 1 !series saved in tucson raw data format summary plot displays 3 !spaghetti and mean chronology plots stand dynamics stuf 0 0 !no stand dynamics analyses done running mean window 0 !running mean window width percent growth change 0 !percent growth change threshold std error threshold 0 !standard error limit threshold Reference: Pederson, N., A.R. Bell, T.A. Knight, C. Leland, N. Malcomb, K.J. Anchukaitis, K. Tackett, J. Scheff, A. Brice, B. Catron, W. Blozan, and J. Riddle. 2012. Long-term perspective on a modern drought in the American Southeast. Environmental Research Letters, 7, 014034. COFECHA output: Chronology file name : GA018.CRN Measurement file name : GA018.RWL Date checked : 06JUL12 Checked by : B. Bauer Beginning year : 1730 Ending year : 2001 Principal investigators: T.A. Knight Site name : Marshall Forest Site location : Georgia Species information : PIEC SHORTLEAF PINE Latitude : 3215 Longitude : -08512 Elevation : 262M Series intercorrelation: 0.617 Avg mean sensitivity : 0.294 Avg standard deviation : 0.727 Avg autocorrelation : 0.741 Number dated series : 46 Segment length tested : 50 Number problem segments: 16 Pct problem segments : 4.49 PART 5: CORRELATION OF SERIES BY SEGMENTS: MArshall Forest 16:00 Fri 06 Jul 2012 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 1725 1750 1775 1800 1825 1850 1875 1900 1925 1950 1975 1774 1799 1824 1849 1874 1899 1924 1949 1974 1999 2024 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 mfp02c 1800 2001 .39 .37 .50 .44 .45 .74 .81 .83 2 mfp02b 1739 2001 .16B .00B .30A .46 .38 .43 .50 .52 .77 .75 .75 3 mfp04a 1827 2001 .55 .58 .47 .37 .63 .66 .67 4 mfp06a 1860 2001 .65 .48 .60 .76 .76 .74 5 mfp08a 1806 2001 .40 .50 .56 .50 .66 .82 .77 .77 6 mfp08b 1845 2001 .70 .66 .59 .72 .76 .76 .74 7 mfp09a 1862 2001 .49 .45 .43 .73 .82 .80 8 mfp09b 1815 2001 .62 .63 .64 .55 .35 .52 .74 .73 9 mfp10a 1843 2001 .63 .65 .56 .61 .64 .75 .73 10 mfp16a 1816 2001 .35 .45 .48 .56 .70 .70 .72 .68 11 mfp17a 1856 2001 .60 .56 .65 .76 .69 .66 12 mfp17b 1855 2001 .64 .61 .70 .78 .74 .73 13 mfp19a 1740 2001 .46 .11B .30A .32B .31B .58 .64 .65 .67 .76 .75 14 mfp19b 1782 2001 .57 .56 .57 .73 .57 .55 .74 .80 .79 15 mfp20a 1850 2001 .53 .56 .58 .66 .78 .81 16 mfp20b 1853 2001 .55 .68 .71 .58 .67 .79 17 mfp22a 1859 2001 .61 .51 .60 .74 .79 .78 18 mfp22b 1832 2001 .60 .57 .47 .62 .76 .75 .73 19 mfp24a 1780 2001 .65 .68 .67 .55 .49 .75 .90 .90 .88 20 mfp24b 1789 2001 .61 .62 .64 .61 .57 .70 .79 .75 .75 21 mfp25a 1866 2001 .67 .67 .70 .82 .87 .85 22 mfp26a 1730 2001 .39B .37B .46 .25A .41 .55 .47 .43 .64 .61 .58 23 mfp26b 1814 2001 .38 .54 .61 .60 .61 .64 .69 .67 24 mfp27c 1864 2001 .67 .57 .50 .59 .66 .63 25 mfp27b 1777 2001 .37 .37B .50 .61 .51 .64 .85 .76 .74 26 mfp29a 1808 2001 .41 .47 .50 .57 .51 .58 .65 .64 27 mfp29b 1835 2001 .50 .40 .42 .55 .67 .76 .73 28 mfp30a 1753 1980 .51 .66 .59 .60 .46 .35 .39 .54 .60 29 mfp30b 1804 2001 .52 .60 .45 .47 .59 .68 .67 .66 30 mfp34a 1799 2001 .28B .27B .46 .47 .46 .61 .61 .64 .64 31 mfp34b 1794 2001 .45 .40 .48 .51 .61 .52 .61 .63 .64 32 mfp37a 1792 2001 .64 .56 .46 .60 .75 .83 .71 .72 .70 33 mfp37b 1795 2001 .52 .49 .61 .65 .69 .66 .56 .68 .66 34 mfp38a 1823 2001 .33B .35 .56 .63 .68 .63 .74 .72 35 mfp38b 1825 2001 .44 .69 .72 .62 .67 .74 .66 36 mfp39a 1821 2001 .56 .59 .76 .69 .71 .78 .71 .68 37 mfp39b 1834 2001 .61 .72 .65 .63 .76 .83 .83 38 mfp40a 1806 2001 .00B .41 .65 .63 .54 .66 .78 .76 39 mfp43b 1790 2000 .46 .43 .47 .61 .71 .78 .72 .56 .54 40 mfp10b 1801 2001 .54 .55 .64 .54 .62 .84 .80 .78 41 mfp16b 1805 2001 .67 .69 .62 .62 .67 .68 .80 .78 42 mfp40b 1820 2001 .38 .41 .49 .53 .58 .72 .73 .73 43 mfp15a 1821 2001 .62 .63 .65 .65 .56 .47 .39 .39 44 mfp15b 1815 2001 .40B .60 .66 .65 .60 .47 .56 .56 45 mfp32a 1878 2001 .48 .44 .75 .81 .81 46 mfp32b 1887 2001 .63 .47 .77 .85 .85 Av segment correlation .34 .24 .48 .45 .53 .59 .57 .60 .69 .73 .72 PART 7: DESCRIPTIVE STATISTICS: MArshall Forest 16:00 Fri 06 Jul 2012 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 mfp02c 1800 2001 202 8 0 .588 1.23 4.24 .692 .791 .234 2.61 .347 .039 1 2 mfp02b 1739 2001 263 11 3 .499 1.06 4.02 .656 .812 .298 2.52 .323 .035 1 3 mfp04a 1827 2001 175 7 0 .556 .89 1.75 .324 .653 .257 2.61 .412 .024 1 4 mfp06a 1860 2001 142 6 0 .683 1.52 3.36 .659 .695 .264 2.76 .466 -.001 1 5 mfp08a 1806 2001 196 8 0 .644 1.27 3.35 .562 .710 .284 2.57 .342 .032 1 6 mfp08b 1845 2001 157 7 0 .700 .90 1.89 .348 .624 .270 2.64 .426 -.013 3 7 mfp09a 1862 2001 140 6 0 .608 .42 1.12 .166 .550 .277 2.75 .396 .023 2 8 mfp09b 1815 2001 187 8 0 .588 .51 1.33 .197 .704 .237 2.79 .498 .009 1 9 mfp10a 1843 2001 159 7 0 .655 1.48 3.30 .636 .564 .304 2.76 .442 .068 1 10 mfp16a 1816 2001 186 8 0 .675 1.56 5.58 .958 .827 .298 2.60 .299 -.018 1 11 mfp17a 1856 2001 146 6 0 .637 1.88 5.22 1.216 .844 .300 2.75 .504 .060 1 12 mfp17b 1855 2001 147 6 0 .699 1.91 5.27 1.041 .780 .324 2.74 .552 .004 1 13 mfp19a 1740 2001 262 11 4 .505 .92 4.59 .540 .785 .278 2.45 .281 .002 1 14 mfp19b 1782 2001 220 9 0 .646 1.39 4.33 .763 .716 .295 2.83 .479 .019 1 15 mfp20a 1850 2001 152 6 0 .654 1.08 2.38 .468 .760 .247 2.78 .489 -.047 1 16 mfp20b 1853 2001 149 6 0 .637 1.45 4.40 .821 .872 .272 2.61 .386 -.049 1 17 mfp22a 1859 2001 143 6 0 .680 1.43 3.37 .590 .625 .268 2.65 .399 .028 1 18 mfp22b 1832 2001 170 7 0 .637 1.57 4.25 .721 .735 .269 2.76 .412 -.018 1 19 mfp24a 1780 2001 222 9 0 .722 1.46 4.20 .630 .741 .254 2.65 .337 .029 3 20 mfp24b 1789 2001 213 9 0 .673 1.63 3.73 .656 .700 .258 2.68 .416 -.042 1 21 mfp25a 1866 2001 136 6 0 .768 1.82 4.04 .808 .758 .234 2.55 .409 .035 1 22 mfp26a 1730 2001 272 11 3 .458 .82 3.17 .566 .740 .389 2.65 .431 -.023 2 23 mfp26b 1814 2001 188 8 0 .637 1.79 5.72 1.010 .601 .415 2.70 .406 .000 2 24 mfp27c 1864 2001 138 6 0 .620 .68 3.01 .498 .748 .286 2.52 .288 -.019 1 25 mfp27b 1777 2001 225 9 1 .573 .98 3.65 .644 .845 .269 2.72 .396 -.029 1 26 mfp29a 1808 2001 194 8 0 .550 1.04 2.50 .401 .470 .310 2.71 .433 .037 1 27 mfp29b 1835 2001 167 7 0 .581 1.06 2.93 .539 .685 .304 2.89 .384 -.026 1 28 mfp30a 1753 1980 228 9 0 .502 1.36 6.04 1.100 .770 .375 2.72 .372 -.019 1 29 mfp30b 1804 2001 198 8 0 .567 1.08 4.30 .808 .819 .297 2.74 .451 -.066 2 30 mfp34a 1799 2001 203 9 2 .499 1.67 4.70 .852 .831 .231 2.52 .319 .008 1 31 mfp34b 1794 2001 208 9 0 .523 1.33 3.02 .583 .760 .246 2.64 .343 -.008 1 32 mfp37a 1792 2001 210 9 0 .665 1.40 4.38 .985 .813 .292 2.66 .422 .014 1 33 mfp37b 1795 2001 207 9 0 .626 1.34 4.49 .834 .821 .292 2.62 .393 .000 1 34 mfp38a 1823 2001 179 8 1 .653 1.29 5.21 .827 .781 .318 2.54 .293 -.009 1 35 mfp38b 1825 2001 177 7 0 .688 1.03 2.70 .506 .715 .302 2.52 .298 .011 1 36 mfp39a 1821 2001 181 8 0 .663 1.47 6.86 .941 .722 .283 2.92 .557 -.024 1 37 mfp39b 1834 2001 168 7 0 .724 1.36 4.73 1.007 .858 .270 2.62 .418 .040 1 38 mfp40a 1806 2001 196 8 1 .597 1.21 4.40 .751 .664 .398 2.87 .411 .009 1 39 mfp43b 1790 2000 211 9 0 .585 1.30 3.99 .604 .535 .324 2.93 .423 .014 1 40 mfp10b 1801 2001 201 8 0 .658 1.64 4.23 .750 .662 .300 2.72 .490 -.002 1 41 mfp16b 1805 2001 197 8 0 .689 1.36 4.78 .899 .869 .278 2.64 .316 -.003 1 42 mfp40b 1820 2001 182 8 0 .582 1.18 5.40 .668 .547 .373 2.98 .466 .023 1 43 mfp15a 1821 2001 181 8 0 .624 1.33 4.36 1.069 .923 .276 2.57 .355 .004 1 44 mfp15b 1815 2001 187 8 1 .645 1.31 4.29 .975 .899 .322 2.46 .322 .002 1 45 mfp32a 1878 2001 124 5 0 .652 1.53 5.57 1.229 .885 .268 2.78 .499 .021 1 46 mfp32b 1887 2001 115 5 0 .717 1.58 6.89 1.284 .866 .277 2.53 .387 .059 1 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 8504 356 16 .617 1.28 6.89 .727 .741 .294 2.98 .398 .004