Green River House historical, Vermont - vt013 Additional Site Information C. Baisan 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 the Green River House in Guilford, VT by C. Baisan. Construction was in 1835~1838 and composed of local timber. While we cannot say much about the original forest from which these timbers originated, it is not a stretch to consider detrending these raw data with closed-canopy or forest interior conditions in mind given eastern hemlock’s basic life-history traits and typical growth patterns. For the Pederson et al. (2012) paper, these data were combined with the Pack Forest (Tsuga canadensis) data that are accessible in the ITRDB. COFECHA output: Chronology file name : VT013.CRN Measurement file name : VT013.RWL Date checked : 29JAN13 Checked by : B. Bauer Beginning year : 1568 Ending year : 1834 Principal investigators: C. Baisan Site name : Green River House historical Site location : Vermont Species information : TSCA EASTERN HEMLOCK Latitude : 4247 Longitude : -7240 Elevation : M Series intercorrelation: 0.611 Avg mean sensitivity : 0.222 Avg standard deviation : 0.278 Avg autocorrelation : 0.853 Number dated series : 4 Segment length tested : 50 Number problem segments: 0 Pct problem segments : 0.00 PART 5: CORRELATION OF SERIES BY SEGMENTS: Green River House historical 09:40 Tue 29 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 1600 1625 1650 1675 1700 1725 1750 1775 1800 1649 1674 1699 1724 1749 1774 1799 1824 1849 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 GRH01A 1607 1834 .83 .76 .56 .67 .65 .77 .77 .77 .79 2 GRH01B 1617 1834 .74 .73 .70 .70 .66 .72 .77 .62 .64 3 GRH07 1568 1824 .57 .57 .59 .51 .43 .64 .64 .47 4 GRH11 1637 1809 .39 .39 .54 .47 .42 .38 .36 Av segment correlation .71 .61 .56 .60 .55 .64 .64 .55 .71 PART 7: DESCRIPTIVE STATISTICS: Green River House historical 09:40 Tue 29 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 GRH01A 1607 1834 228 9 0 .730 .47 1.05 .208 .804 .240 2.55 .406 -.014 3 2 GRH01B 1617 1834 218 9 0 .700 .47 1.16 .209 .807 .232 2.55 .331 -.031 3 3 GRH07 1568 1824 257 8 0 .539 .49 2.11 .316 .913 .197 2.61 .334 .007 1 4 GRH11 1637 1809 173 7 0 .432 .77 1.93 .401 .890 .226 2.69 .403 .002 3 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 876 33 0 .611 .53 2.11 .278 .853 .222 2.69 .366 -.009