Boyd Tract, North Carolina - nc019 Additional Information Ed Cook and Scott St. George Purpose of Collection: Climatology - PDSI/PHDI analysis Cores are stored at: Tree Ring Laboratory of Lamont-Doherty Earth Observatory and Columbia University NOTES: Boyd Tract is located near Weymouth Woods ITRDB site. Collected as a part of the Eastern US Drought project in 1983. Collections were made for dendroclimatology. In 2001 Scott St. George re-measured the samples to create ring width, earlywood and latewood width data. COFECHA output: Chronology file name : NC019.CRN Measurement file name : NC019.RWL Date checked : 29MAR11 Checked by : B. Bauer Beginning year : 1559 Ending year : 1982 Principal investigators: Ed Cook Scott St. George Site name : Boyd Tract Site location : N. Carolina Species information : PIPA LONGLEAF PINE Latitude : +3508 Longitude : -07922 Elevation : 140M Series intercorrelation: 0.535 Avg mean sensitivity : 0.272 Avg standard deviation : 0.541 Avg autocorrelation : 0.741 Number dated series : 31 Segment length tested : 50 Number problem segments: 23 Pct problem segments : 7.44 PART 5: CORRELATION OF SERIES BY SEGMENTS: Boyd Tract RW 14:19 Tue 29 Mar 2011 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 1724 1749 1774 1799 1824 1849 1874 1899 1924 1949 1974 1999 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 BT2W 1679 1982 .21A .14B .45 .59 .47 .45 .52 .37 .33B .43 .56 .52 2 BT3SW 1757 1982 .64 .66 .59 .55 .32A .32A .43 .40 .37 3 BT4S 1733 1979 .43 .57 .73 .59 .56 .50 .55 .69 .58 .56 4 BT5SE 1742 1982 .56 .64 .65 .64 .55 .55 .56 .51 .52 .52 5 BT6W 1722 1982 .36 .36 .64 .67 .70 .74 .61 .37 .50 .75 .67 6 BT7S 1754 1982 .65 .63 .60 .53 .47 .61 .47 .45 .45 7 BT8S 1758 1982 .45 .47 .10B .27A .55 .58 .45 .44 .43 8 BT9N 1735 1982 .40 .68 .71 .67 .57 .52 .62 .61 .61 .62 9 BT10S 1754 1982 .61 .69 .57 .61 .72 .62 .60 .68 .43 10 BT11S 1708 1982 .25B .32A .61 .66 .50 .53 .54 .48 .55 .67 .67 11 BT12N 1714 1982 .70 .71 .79 .74 .62 .70 .66 .66 .74 .65 .58 12 BT13W 1779 1982 .68 .68 .79 .74 .70 .72 .78 .79 13 BT14N 1711 1982 .72 .80 .69 .55 .59 .43 .41 .42 .34 .54 .53 14 BT15S 1788 1982 .70 .53 .68 .74 .67 .69 .69 .68 15 BT16N 1712 1982 .59 .66 .80 .69 .39 .44 .60 .47 .58 .70 .72 16 BT17N 1760 1982 .71 .65 .65 .48 .37 .55 .73 .53 .52 17 BT18N 1761 1982 .83 .76 .69 .69 .63 .73 .65 .64 .59 18 BT19N 1719 1982 .75 .78 .74 .68 .53 .62 .54 .51 .50 .30A .23A 19 BT20W 1735 1981 .67 .78 .64 .60 .61 .52 .66 .72 .67 .64 20 BT21N 1726 1982 .45 .41 .58 .53 .60 .66 .65 .57 .58 .56 21 BT22S 1758 1982 .20B .09B .36 .63 .49 .45 .38 .47 .39 22 BT23N 1687 1982 .53 .57 .69 .65 .50 .45 .40 .28A .33 .27A .45 .36 23 BT24N 1735 1982 .15B .62 .58 .15B .23A .45 .61 .52 .44 .45 24 BT24S 1747 1982 .63 .68 .66 .46 .65 .63 .42 .34 .39 .38 25 BT24W 1718 1982 .13B .21B .68 .63 .30A .43 .65 .64 .43 .49 .41 26 BT25N 1762 1982 .30A .37 .57 .64 .52 .44 .47 .41 .35 27 BT25E 1759 1982 .69 .68 .55 .59 .57 .62 .66 .60 .61 28 BT26W 1559 1982 .03B .38 .47 .38 .60 .61 .64 .54 .52 .65 .69 .60 29 BT28W 1745 1982 .69 .73 .65 .67 .55 .47 .39 .39 .69 .72 30 BT30 1762 1982 .72 .66 .57 .56 .54 .59 .55 .63 .65 31 BT31W 1741 1982 .59 .62 .69 .63 .57 .43 .47 .55 .60 .60 Av segment correlation .26 .46 .53 .62 .62 .53 .56 .53 .53 .54 .57 .53 PART 7: DESCRIPTIVE STATISTICS: Boyd Tract RW 14:19 Tue 29 Mar 2011 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 BT2W 1679 1982 304 12 3 .407 .79 3.01 .650 .909 .245 2.50 .335 -.024 3 2 BT3SW 1757 1982 226 9 2 .470 1.13 4.10 .779 .842 .238 2.56 .316 -.021 2 3 BT4S 1733 1979 247 10 0 .552 .99 2.86 .533 .721 .276 2.93 .569 -.006 1 4 BT5SE 1742 1982 241 10 0 .585 .97 2.33 .463 .688 .298 2.73 .415 -.020 1 5 BT6W 1722 1982 261 11 0 .556 .96 4.22 .491 .638 .273 2.77 .410 .037 1 6 BT7S 1754 1982 229 9 0 .552 1.05 3.80 .478 .717 .239 2.73 .291 .012 1 7 BT8S 1758 1982 225 9 2 .420 1.34 3.11 .526 .547 .275 2.72 .429 -.034 1 8 BT9N 1735 1982 248 10 0 .563 1.06 3.76 .643 .795 .265 2.54 .310 -.014 1 9 BT10S 1754 1982 229 9 0 .565 .89 3.09 .533 .760 .311 2.60 .327 -.060 4 10 BT11S 1708 1982 275 11 2 .467 .88 2.92 .481 .763 .262 2.50 .348 -.022 1 11 BT12N 1714 1982 269 11 0 .679 1.01 3.70 .693 .838 .269 2.67 .413 .003 1 12 BT13W 1779 1982 204 8 0 .731 .92 2.48 .409 .667 .282 2.67 .425 -.020 1 13 BT14N 1711 1982 272 11 0 .538 .71 2.91 .537 .783 .288 2.67 .315 .002 1 14 BT15S 1788 1982 195 8 0 .678 .84 2.15 .455 .603 .338 2.69 .360 -.002 1 15 BT16N 1712 1982 271 11 0 .587 .93 3.79 .593 .755 .282 2.69 .374 .005 1 16 BT17N 1760 1982 223 9 0 .554 1.15 2.42 .487 .631 .292 2.65 .385 -.016 2 17 BT18N 1761 1982 222 9 0 .678 1.47 4.22 .673 .780 .206 2.64 .352 -.047 2 18 BT19N 1719 1982 264 11 2 .553 .81 3.00 .613 .811 .355 2.74 .423 .010 1 19 BT20W 1735 1981 247 10 0 .641 1.12 3.04 .560 .703 .291 2.59 .371 -.012 1 20 BT21N 1726 1982 257 10 0 .555 1.06 3.83 .688 .720 .288 2.65 .360 .010 1 21 BT22S 1758 1982 225 9 2 .386 .91 3.43 .516 .705 .283 2.86 .416 .017 4 22 BT23N 1687 1982 296 12 2 .453 .82 3.27 .686 .833 .247 2.66 .336 -.015 2 23 BT24N 1735 1982 248 10 3 .381 .54 1.46 .213 .697 .221 2.59 .356 -.049 2 24 BT24S 1747 1982 236 10 0 .495 .53 1.98 .271 .759 .243 2.53 .297 -.014 1 25 BT24W 1718 1982 265 11 3 .384 .60 2.08 .316 .640 .280 2.77 .287 -.003 3 26 BT25N 1762 1982 221 9 1 .428 .88 2.21 .353 .716 .246 2.69 .385 -.015 1 27 BT25E 1759 1982 224 9 0 .611 1.29 5.77 .734 .694 .292 3.01 .379 -.007 3 28 BT26W 1559 1982 424 12 1 .460 .66 3.23 .395 .752 .270 2.57 .314 -.046 4 29 BT28W 1745 1982 238 10 0 .595 1.08 4.35 .787 .890 .246 2.67 .441 -.018 1 30 BT30 1762 1982 221 9 0 .609 1.16 3.21 .500 .706 .253 2.67 .457 .010 1 31 BT31W 1741 1982 242 10 0 .565 1.13 3.85 .741 .753 .292 2.54 .411 -.036 1 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 7749 309 23 .535 .94 5.77 .541 .741 .272 3.01 .372 -.013