Cold River, Massachusetts - ma017 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 along the Cold River in MA by E. Cook. 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. 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 : MA017.CRN Measurement file name : MA017.RWL Date checked : 29JAN13 Checked by : B. Bauer Beginning year : 1650 Ending year : 2003 Principal investigators: E. Cook P. Krusic Site name : Cold River Site location : Mass. Species information : TSCA EASTERN HEMLOCK Latitude : 4238 Longitude : -7256 Elevation : M Series intercorrelation: 0.487 Avg mean sensitivity : 0.254 Avg standard deviation : 0.435 Avg autocorrelation : 0.827 Number dated series : 8 Segment length tested : 50 Number problem segments: 14 Pct problem segments : 14.43 PART 5: CORRELATION OF SERIES BY SEGMENTS: Cold River 09:34 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 1650 1675 1700 1725 1750 1775 1800 1825 1850 1875 1900 1925 1950 1975 1699 1724 1749 1774 1799 1824 1849 1874 1899 1924 1949 1974 1999 2024 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 CRA247 1650 2003 .13B .40 .40 .55 .67 .73 .80 .67 .69 .61 .49 .52 .42 .44 2 CRA2410 1730 2003 .35 .56 .79 .82 .71 .64 .46 .30B .64 .78 .75 3 CRA249 1764 2002 .53 .57 .73 .77 .77 .66 .54 .64 .67 .63 4 CRD313 1690 2003 .02B .33 .40 .29A .27A .59 .61 .53 .23B .12B .57 .54 .50 5 CRD33 1651 2003 .08B .33 .35B .44 .64 .47 .45 .56 .56 .50 .32A .51 .59 .58 6 TODD115 1695 2003 .23A .29A .32A .58 .68 .64 .52 .47 .47 .43 .61 .60 .58 7 TODD119 1765 2003 .33 .52 .68 .70 .71 .60 .43 .52 .56 .53 8 me24 1724 2003 .35 .34 .45 .41 .45 .52 .53 .46 .29A .34 .41 .43 Av segment correlation .11 .24 .34 .40 .51 .56 .65 .63 .61 .50 .37 .54 .57 .56 PART 7: DESCRIPTIVE STATISTICS: Cold River 09:34 Tue 29 Jan 2013 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 CRA247 1650 2003 354 14 1 .500 .60 1.78 .318 .774 .270 2.60 .338 -.006 1 2 CRA2410 1730 2003 274 11 1 .595 .71 2.35 .424 .807 .261 2.81 .374 .003 1 3 CRA249 1764 2002 239 10 0 .650 .81 2.66 .476 .792 .284 2.72 .437 -.037 2 4 CRD313 1690 2003 314 13 5 .353 .58 1.78 .393 .920 .222 2.64 .291 -.022 1 5 CRD33 1651 2003 353 14 3 .414 .55 2.18 .348 .815 .285 2.72 .401 .013 1 6 TODD115 1695 2003 309 13 3 .497 .81 2.63 .514 .829 .260 2.76 .362 -.004 1 7 TODD119 1765 2003 239 10 0 .556 1.14 3.17 .514 .830 .200 2.60 .321 -.013 1 8 me24 1724 2003 280 12 1 .396 .91 4.31 .561 .846 .238 2.60 .387 -.064 3 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 2362 97 14 .487 .74 4.31 .435 .827 .254 2.81 .362 -.015