Greenwood Plantation, Georgia - ga015 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 103 !spline stabilized (fixed 50% cutoff) 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 : GA015.CRN Measurement file name : GA015.RWL Date checked : 06JUL12 Checked by : B. Bauer Beginning year : 1661 Ending year : 2003 Principal investigators: T.A. Knight Site name : Greenwood Plantation Site location : Georgia Species information : PIPA LONGLEAF PINE Latitude : 3051 Longitude : -08358 Elevation : 61M Series intercorrelation: 0.597 Avg mean sensitivity : 0.547 Avg standard deviation : 0.403 Avg autocorrelation : 0.555 Number dated series : 47 Segment length tested : 50 Number problem segments: 8 Pct problem segments : 2.03 PART 5: CORRELATION OF SERIES BY SEGMENTS: Greenwood Plantation 13:13 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 1675 1700 1725 1750 1775 1800 1825 1850 1875 1900 1925 1950 1975 1724 1749 1774 1799 1824 1849 1874 1899 1924 1949 1974 1999 2024 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 gwp01a 1801 2003 .59 .68 .61 .50 .64 .75 .70 .66 2 gwp01b 1818 2003 .57 .62 .57 .55 .67 .71 .77 .78 3 gwp03a 1739 2003 .34 .55 .52 .51 .67 .58 .49 .43 .48 .58 .58 4 gwp04a 1836 2003 .65 .75 .76 .64 .64 .62 .60 5 gwp04b 1854 2003 .69 .69 .67 .73 .78 .79 6 gwp05a 1832 2003 .61 .68 .63 .66 .71 .69 .75 7 gwp05b 1788 2003 .40 .42 .57 .61 .59 .39 .45 .63 .67 8 gwp07a 1795 1900 .49 .46 .55 .66 .65 9 gwp08a 1744 2003 .56 .49 .54 .60 .44 .56 .64 .43 .41 .65 .66 10 gwp08b 1778 2003 .53 .55 .42 .55 .55 .56 .57 .55 .57 11 gwp09a 1770 2003 .59 .53 .66 .63 .73 .77 .58 .52 .65 .63 12 gwp09b 1721 2003 .28A .26A .30B .49 .50 .56 .67 .72 .60 .50 .63 .63 13 gwp10a 1711 2003 .42 .47 .34 .40 .58 .51 .47 .51 .46 .49 .60 .61 14 gwp10c 1737 1899 .31A .40 .49 .48 .41 .55 15 gwp11a 1830 2003 .45 .59 .62 .56 .62 .59 .64 16 gwp11b 1790 2003 .58 .62 .54 .56 .61 .56 .65 .70 .69 17 gwp12a 1836 2003 .56 .64 .60 .50 .60 .73 .75 18 gwp14a 1770 2003 .72 .76 .77 .65 .69 .65 .58 .69 .66 .67 19 gwp14b 1783 2003 .75 .72 .52 .54 .63 .50 .58 .80 .80 20 gwp17a 1835 2003 .68 .67 .59 .55 .72 .73 .72 21 gwp17b 1837 2003 .71 .73 .67 .64 .56 .55 .55 22 gwp18a 1810 2003 .38 .39 .78 .73 .70 .60 .61 .61 23 gwp18b 1694 2003 .49B .54 .57 .64 .76 .64 .67 .82 .78 .67 .74 .80 .79 24 gwp18c 1661 1793 .52 .58 .63 .63 25 gwp19a 1770 2003 .64 .64 .70 .59 .78 .83 .69 .56 .53 .47 26 gwp19b 1774 2003 .49 .48 .44 .59 .68 .58 .56 .69 .69 .64 27 gwp20a 1773 2003 .68 .67 .78 .77 .74 .69 .59 .55 .64 .66 28 gwp23a 1820 2003 .65 .70 .65 .59 .70 .79 .76 .75 29 gwp23b 1820 2003 .42 .38 .59 .66 .69 .71 .74 .74 30 gwp24a 1770 2003 .65 .66 .77 .70 .65 .57 .58 .72 .57 .57 31 gwp24b 1800 2003 .55 .68 .74 .66 .51 .61 .71 .69 32 gwp25b 1812 2003 .71 .66 .78 .76 .70 .70 .56 .57 33 gwp25c 1776 1846 .62 .54 34 gwp26a 1812 2003 .68 .75 .74 .57 .55 .54 .55 .63 35 gwp26b 1812 2003 .66 .59 .76 .60 .54 .52 .55 .62 36 gwp27a 1755 2003 .30B .59 .63 .59 .65 .75 .72 .72 .54 .51 37 gwp27b 1761 2003 .36B .57 .56 .60 .64 .70 .67 .61 .54 .53 38 gwp28a 1794 2003 .38 .54 .49 .66 .67 .49 .44 .51 .43 39 gwp28b 1762 2003 .49 .68 .66 .53 .71 .67 .60 .57 .56 .58 40 gwp31a 1736 2003 .44 .39 .67 .79 .66 .45 .38 .47 .52 .50 .46 41 gwp31c 1740 1827 .48 .45 .73 .71 42 gwp32a 1805 2003 .62 .48 .60 .69 .68 .48 .42 .39 43 gwp33a 1783 2003 .55 .66 .72 .81 .74 .66 .45 .35 .32A 44 gwp35b 1736 2002 .73 .74 .72 .66 .64 .74 .72 .61 .59 .58 .57 45 gwp35c 1743 1829 .66 .70 .70 .59 46 gwp36a 1796 2002 .67 .65 .43 .49 .57 .58 .71 .59 .60 47 gwp37a 1820 2003 .42 .52 .63 .65 .63 .51 .61 .60 Av segment correlation .51 .45 .50 .53 .59 .60 .59 .66 .64 .59 .60 .62 .62 PART 7: DESCRIPTIVE STATISTICS: Greenwood Plantation 13:13 Fri 06 Jul 2012 Page 9 ----------------------------------------------------------------------------------------------------------------------------------- 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 gwp01a 1801 2003 203 8 0 .622 .45 1.41 .273 .464 .520 2.73 .449 -.029 1 2 gwp01b 1818 2003 186 8 0 .636 .57 2.00 .294 .427 .437 2.82 .518 -.019 1 3 gwp03a 1739 2003 265 11 0 .512 .33 2.22 .417 .878 .394 2.83 .419 .021 1 4 gwp04a 1836 2003 168 7 0 .647 .71 3.44 .752 .805 .525 2.74 .415 .000 1 5 gwp04b 1854 2003 150 6 0 .713 .73 3.23 .683 .739 .582 2.72 .471 -.015 1 6 gwp05a 1832 2003 172 7 0 .672 .71 4.55 .659 .637 .576 2.90 .566 .005 1 7 gwp05b 1788 2003 216 9 0 .536 .54 2.91 .508 .597 .663 2.85 .455 -.006 2 8 gwp07a 1795 1900 106 5 0 .570 .82 4.75 .720 .565 .587 3.08 .637 -.017 1 9 gwp08a 1744 2003 260 11 0 .545 .47 1.94 .357 .535 .565 3.04 .406 -.003 1 10 gwp08b 1778 2003 226 9 0 .545 .41 2.01 .325 .655 .522 3.05 .516 -.041 1 11 gwp09a 1770 2003 234 10 0 .618 .47 1.39 .285 .272 .603 2.62 .354 -.015 1 12 gwp09b 1721 2003 283 12 3 .580 .27 1.15 .198 .494 .585 2.91 .454 -.004 1 13 gwp10a 1711 2003 293 12 0 .465 .36 1.26 .268 .622 .552 2.68 .460 .028 1 14 gwp10c 1737 1899 163 6 1 .445 .29 1.00 .199 .601 .493 2.73 .468 .059 1 15 gwp11a 1830 2003 174 7 0 .544 .67 1.90 .425 .578 .543 2.74 .380 -.005 1 16 gwp11b 1790 2003 214 9 0 .599 .47 1.38 .287 .402 .557 2.72 .397 -.012 3 17 gwp12a 1836 2003 168 7 0 .609 .71 2.77 .484 .561 .547 2.88 .512 -.015 1 18 gwp14a 1770 2003 234 10 0 .661 .38 1.37 .286 .349 .699 3.24 .555 -.037 2 19 gwp14b 1783 2003 221 9 0 .650 .55 2.06 .433 .514 .640 3.05 .462 -.010 1 20 gwp17a 1835 2003 169 7 0 .624 .78 2.99 .664 .774 .469 2.66 .413 -.001 1 21 gwp17b 1837 2003 167 7 0 .629 .75 2.80 .574 .721 .446 3.07 .436 .057 1 22 gwp18a 1810 2003 194 8 0 .611 .36 1.26 .226 .169 .636 2.92 .537 -.013 2 23 gwp18b 1694 2003 310 13 1 .676 .41 1.52 .277 .355 .645 2.85 .526 -.059 2 24 gwp18c 1661 1793 133 4 0 .550 .31 1.02 .205 .374 .591 2.70 .440 -.039 1 25 gwp19a 1770 2003 234 10 0 .628 .55 2.57 .409 .603 .513 2.77 .439 -.041 4 26 gwp19b 1774 2003 230 10 0 .582 .52 1.90 .350 .530 .492 2.83 .527 -.001 3 27 gwp20a 1773 2003 231 10 0 .681 .89 3.25 .551 .468 .561 2.72 .482 -.045 1 28 gwp23a 1820 2003 184 8 0 .705 .63 3.68 .538 .562 .535 2.93 .417 .011 1 29 gwp23b 1820 2003 184 8 0 .627 .63 2.62 .442 .403 .606 3.01 .509 -.035 2 30 gwp24a 1770 2003 234 10 0 .624 .80 2.60 .519 .602 .472 2.56 .351 -.025 1 31 gwp24b 1800 2003 204 8 0 .598 .59 2.27 .361 .566 .470 2.46 .282 .042 2 32 gwp25b 1812 2003 192 8 0 .675 .46 1.93 .293 .335 .491 2.93 .517 -.007 1 33 gwp25c 1776 1846 71 2 0 .597 .64 1.39 .311 .712 .362 2.62 .428 -.035 1 34 gwp26a 1812 2003 192 8 0 .611 .48 2.37 .449 .600 .605 3.12 .553 .049 1 35 gwp26b 1812 2003 192 8 0 .617 .36 2.51 .358 .650 .505 2.90 .487 -.002 1 36 gwp27a 1755 2003 249 10 1 .572 .60 2.43 .483 .552 .659 2.78 .455 .015 1 37 gwp27b 1761 2003 243 10 1 .604 .43 1.56 .298 .644 .516 2.92 .550 -.028 1 38 gwp28a 1794 2003 210 9 0 .500 .29 1.36 .225 .450 .520 2.79 .382 -.013 1 39 gwp28b 1762 2003 242 10 0 .584 .41 1.48 .293 .587 .516 2.90 .444 .005 1 40 gwp31a 1736 2003 268 11 0 .517 .58 2.57 .521 .809 .420 2.85 .447 .026 1 41 gwp31c 1740 1827 88 4 0 .578 .77 1.89 .426 .491 .497 2.68 .449 -.015 1 42 gwp32a 1805 2003 199 8 0 .578 .56 2.63 .512 .669 .486 2.91 .475 -.001 3 43 gwp33a 1783 2003 221 9 1 .587 .77 2.74 .590 .671 .459 2.78 .458 -.021 1 44 gwp35b 1736 2002 267 11 0 .638 .38 1.98 .379 .451 .713 2.86 .387 .008 1 45 gwp35c 1743 1829 87 4 0 .551 .76 2.27 .444 .383 .575 2.73 .386 .027 1 46 gwp36a 1796 2002 207 9 0 .585 .42 2.58 .454 .740 .634 2.77 .388 .046 1 47 gwp37a 1820 2003 184 8 0 .571 .70 2.37 .450 .547 .526 2.81 .491 -.007 2 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 9522 395 8 .597 .53 4.75 .403 .555 .547 3.24 .457 -.005