Northern Hudson Valley historical, New York - ny042 Additional Site Information E. Cook P. Krusic Reference: Pederson, N., A.R. Bell, E.R. Cook, U. Lall, N. Devineni, R. Seager, K. Eggleston, and K.J. Vranes. In press 2013. Is an Epic Pluvial Masking the Water Insecurity of the Greater New York City Region? Journal of Climate, Early Online Release 2012 doi: http://dx.doi.org/10.1175/JCLI-D-11-00723.1 Notes: This collection of Tsuga canadensis raw ring widths was made from historical timbers and structures by E. Cook in and around the greater northern Hudson Valley region of NY State. We cannot say anything about forest conditions from which these samples originally grew. However, given the basic life-history traits and growth patterns of eastern hemlock, it is best to consider detrending these raw data with closed-canopy or forest interior conditions in mind. These data were combined with the Pack Forest (Tsuga canadensis) data that are accessible in the ITRDB. COFECHA output: Chronology file name : NY042.CRN Measurement file name : NY042.RWL Date checked : 28JAN13 Checked by : B. Bauer Beginning year : 1509 Ending year : 1825 Principal investigators: E. Cook P. Krusic Site name : Northern Hudson Valley historical Site location : New York Species information : TSCA EASTERN HEMLOCK Latitude : 4324 Longitude : -07400 Elevation : M Series intercorrelation: 0.568 Avg mean sensitivity : 0.215 Avg standard deviation : 0.398 Avg autocorrelation : 0.781 Number dated series : 19 Segment length tested : 50 Number problem segments: 12 Pct problem segments : 8.63 PART 5: CORRELATION OF SERIES BY SEGMENTS: Northern Hudson Valley Historical 11:34 Mon 28 Jan 2013 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 1500 1525 1550 1575 1600 1625 1650 1675 1700 1725 1750 1775 1800 1549 1574 1599 1624 1649 1674 1699 1724 1749 1774 1799 1824 1849 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 TRL10 1626 1784 .40 .49 .58 .58 .66 .60 2 trl12 1661 1819 .48 .50 .56 .60 .49 .55 3 TRL14 1622 1785 .44B .55 .58 .59 .59 .62 .60 4 TRL27 1608 1795 .39 .44 .29B .41 .65 .67 .62 5 TRL34 1572 1755 .32A .34 .32B .35B .25A .39 .43 .31A 6 VSC3a 1563 1808 .34B .33B .43 .61 .68 .74 .79 .77 .74 .64 7 VSC3b 1570 1808 .53 .55 .56 .54 .62 .71 .68 .73 .78 .77 8 VSC6a 1631 1786 .58 .69 .67 .46B .39 .53 9 VSC6b 1631 1786 .59 .66 .66 .50 .45 .51 10 VSC8a 1578 1795 .44 .72 .79 .47 .48 .62 .60 .60 11 VSC8b 1578 1795 .46 .68 .76 .61 .62 .60 .39 .36B 12 BS2a 1714 1825 .40 .37 .49 .54 .55 13 BS2b 1714 1825 .58 .59 .47 .54 .55 14 BS5a 1607 1756 .75 .73 .67 .75 .85 .81 15 BS5b 1607 1760 .70 .76 .68 .70 .74 .75 16 BS6a 1509 1809 .63 .66 .57 .46 .68 .70 .58 .57 .63 .67 .59 .62 17 BS6b 1519 1823 .70 .74 .71 .58 .69 .67 .61 .70 .73 .63 .53 .54 18 BS7a 1674 1800 .59 .59 .63 .67 .69 .70 19 BS7b 1697 1816 .32A .43 .55 .74 .65 Av segment correlation .66 .70 .49 .45 .58 .60 .56 .59 .60 .59 .58 .62 .55 PART 7: DESCRIPTIVE STATISTICS: Northern Hudson Valley Historical 11:34 Mon 28 Jan 2013 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 TRL10 1626 1784 159 6 0 .531 .96 2.19 .452 .802 .265 2.50 .419 .007 1 2 trl12 1661 1819 159 6 0 .537 1.71 2.87 .531 .753 .179 2.62 .477 .032 1 3 TRL14 1622 1785 164 7 1 .537 1.24 2.85 .555 .726 .265 2.61 .454 -.054 2 4 TRL27 1608 1795 188 7 1 .471 1.40 4.45 .593 .864 .160 2.80 .506 -.014 1 5 TRL34 1572 1755 184 8 5 .341 .84 2.80 .610 .839 .333 2.46 .299 -.043 2 6 VSC3a 1563 1808 246 10 2 .566 .59 1.53 .303 .806 .250 2.81 .389 -.057 2 7 VSC3b 1570 1808 239 10 0 .641 .54 1.10 .213 .702 .246 2.64 .426 .025 1 8 VSC6a 1631 1786 156 6 1 .525 .95 2.02 .431 .818 .229 2.73 .429 -.006 1 9 VSC6b 1631 1786 156 6 0 .553 .86 1.76 .340 .807 .216 2.76 .485 .025 1 10 VSC8a 1578 1795 218 8 0 .589 .65 1.73 .263 .754 .214 2.85 .455 -.021 2 11 VSC8b 1578 1795 218 8 1 .550 .66 1.86 .238 .712 .198 2.76 .405 -.010 2 12 BS2a 1714 1825 112 5 0 .457 1.07 2.46 .551 .779 .249 2.64 .449 -.041 1 13 BS2b 1714 1825 112 5 0 .538 1.04 2.19 .489 .798 .231 2.71 .482 .010 1 14 BS5a 1607 1756 150 6 0 .757 1.12 3.09 .534 .804 .206 2.72 .458 .038 1 15 BS5b 1607 1760 154 6 0 .692 1.12 2.88 .417 .715 .192 2.60 .453 .072 1 16 BS6a 1509 1809 301 12 0 .600 .99 2.43 .446 .848 .181 2.66 .372 -.057 3 17 BS6b 1519 1823 305 12 0 .624 .87 1.89 .281 .804 .159 2.79 .437 -.022 3 18 BS7a 1674 1800 127 6 0 .653 1.07 2.16 .320 .712 .182 2.51 .334 .001 1 19 BS7b 1697 1816 120 5 1 .552 .92 2.19 .276 .731 .167 2.83 .451 -.027 1 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 3468 139 12 .568 .94 4.45 .398 .781 .215 2.85 .427 -.011