Montgomery Place LITU, New York - ny030 Additional Site Information N. Pederson D. Dukpa K. Rock 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 LITU raw ring widths was made by N. Pederson on rolling terrain within the Montgomery Place Historic site near Barrytown, NY. These data were collected for a dendroecological study of southern temperate trees growing at or near a northern range margin. While the oldest trees in the stand were targeted, the goal of field sampling was to collect a range of existing tree ages within the stand. The stand in which they are sampled has good soil depth. At the time of sampling, the forest was fairly dense. And, while there are old trees in this collection and maps show intact forest at the time of purchase in the early 19th cenrtury, there is evidence of past logging. Because of this and despite low shade tolerance of LITU, detrending of these raw data should be conducted with closed-canopy or forest interior conditions and forest disturbance in mind. The raw data in this collection contains 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. COFECHA output: Chronology file name : NY030.CRN Measurement file name : NY030.RWL Date checked : 26JAN13 Checked by : B. Bauer Beginning year : 1754 Ending year : 2002 Principal investigators: N. Pederson D. Dukpa K. Rock Site name : Montgomery Place Site location : New York Species information : LITU TULIPTREE Latitude : 4209 Longitude : -07357 Elevation : 61M Series intercorrelation: 0.528 Avg mean sensitivity : 0.280 Avg standard deviation : 0.996 Avg autocorrelation : 0.659 Number dated series : 20 Segment length tested : 50 Number problem segments: 12 Pct problem segments : 10.17 PART 5: CORRELATION OF SERIES BY SEGMENTS: Montgomery Place LITU 09:09 Sat 26 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 1750 1775 1800 1825 1850 1875 1900 1925 1950 1975 1799 1824 1849 1874 1899 1924 1949 1974 1999 2024 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 PTH01a 1799 2002 .31A .38 .61 .68 .73 .73 .71 .55 .53 2 PTH01b 1811 2002 -.08B .04B .28A .66 .68 .70 .80 .75 3 PTH02a 1754 2002 .34 .35B .48 .37 .40 .51 .55 .52 .40 .34 4 PTH03a 1910 2002 .28A .62 .70 .69 5 PTH03b 1905 2002 .23B .64 .70 .72 6 PTH06b 1907 2002 .23A .67 .74 .68 7 PTH09a 1893 2002 .70 .76 .78 .78 .75 8 PTH09b 1893 2002 .80 .81 .80 .63 .61 9 PTH10a 1893 2002 .68 .61 .55 .57 .53 10 PTH10b 1882 2002 .45 .43 .54 .52 .51 11 PTH11a 1888 2002 .54 .53 .73 .72 .74 12 PTH12a 1906 2002 .54 .64 .67 .64 13 PTH12b 1909 2002 .55 .61 .64 .65 14 PTH13a 1817 2002 .61 .60 .67 .68 .64 .70 .72 .64 15 PTH14a 1912 2002 .35 .73 .78 .80 16 PTH18a 1803 2002 .51 .50 .53 .58 .43 .51 .54 .50 17 PTH19a 1903 2002 .67 .51 .49 .50 18 PTH19b 1761 2002 .24A .23B .39 .28B .31A .65 .72 .69 .68 .59 19 PTH20a 1852 1999 .57 .61 .60 .51 .43 20 PTH20b 1848 2002 .51 .52 .52 .58 .60 .40 .35 Av segment correlation .29 .30 .38 .42 .50 .62 .55 .64 .62 .61 PART 7: DESCRIPTIVE STATISTICS: Montgomery Place LITU 09:09 Sat 26 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 PTH01a 1799 2002 204 9 1 .558 1.50 6.01 .814 .639 .343 2.69 .331 -.045 1 2 PTH01b 1811 2002 192 8 3 .448 1.41 4.98 1.708 .733 .330 2.60 .348 -.002 1 3 PTH02a 1754 2002 249 10 1 .407 1.21 4.18 .644 .708 .290 2.74 .426 -.031 1 4 PTH03a 1910 2002 93 4 1 .498 2.10 6.48 2.923 .811 .277 2.69 .459 -.051 1 5 PTH03b 1905 2002 98 4 1 .445 2.33 5.40 1.128 .758 .269 2.55 .397 -.012 1 6 PTH06b 1907 2002 96 4 1 .423 2.38 5.48 1.382 .770 .297 2.50 .355 -.045 1 7 PTH09a 1893 2002 110 5 0 .734 2.57 5.18 .947 .518 .264 2.79 .547 -.047 1 8 PTH09b 1893 2002 110 5 0 .698 2.91 4.87 .895 .525 .235 2.69 .413 -.043 1 9 PTH10a 1893 2002 110 5 0 .589 2.73 4.95 .730 .396 .221 2.62 .423 -.036 1 10 PTH10b 1882 2002 121 5 0 .476 2.59 4.45 .782 .480 .250 2.58 .368 .015 1 11 PTH11a 1888 2002 115 5 0 .642 2.35 4.38 .751 .408 .264 2.58 .438 -.007 1 12 PTH12a 1906 2002 97 4 0 .597 3.08 7.51 1.286 .586 .281 2.67 .613 -.070 1 13 PTH12b 1909 2002 94 4 0 .590 3.67 6.98 1.233 .532 .251 2.51 .476 -.011 1 14 PTH13a 1817 2002 186 8 0 .647 1.60 5.62 1.036 .773 .285 2.74 .505 .013 1 15 PTH14a 1912 2002 91 4 0 .589 2.96 6.43 1.678 .657 .360 2.60 .545 -.059 1 16 PTH18a 1803 2002 200 8 0 .482 1.50 3.93 .906 .810 .239 2.47 .310 -.050 1 17 PTH19a 1903 2002 100 4 0 .582 1.15 2.63 .494 .655 .278 2.78 .460 .001 1 18 PTH19b 1761 2002 242 10 4 .420 1.21 3.34 .533 .726 .244 2.59 .389 -.041 1 19 PTH20a 1852 1999 148 5 0 .524 1.24 3.32 .561 .621 .262 2.71 .438 .069 1 20 PTH20b 1848 2002 155 7 0 .493 1.63 4.02 .885 .731 .330 2.69 .503 .018 1 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 2811 118 12 .528 1.91 7.51 .996 .659 .280 2.79 .425 -.021