Laya-1, Bhutan - bt016 Additional Site Information Edward R. Cook, Paul J. Krusic, and Dorji Dukpa Purpose of Collection: Climatology - precipitation analysis Reference: Cook, E.R., K.J. Anchukaitis, B.M. Buckley, R.D. D'Arrigo, G.C. Jacoby, and W.E. Wright. 2010. Asian Monsoon Failure and Megadrought During the Last Millennium. Science, Vol. 328, Issue 5977, pp.486-489, 23 April 2010. DOI: 10.1126/science.1185188 COFECHA output: Chronology file name : BT016.CRN Measurement file name : BT016.RWL Date checked : 06SEP11 Checked by : B. Bauer Beginning year : 1644 Ending year : 2006 Principal investigators: Edward R. Cook, Paul J. Krusic, and Dorji Dukpa Site name : Laya-1 Site location : Bhutan Species information : LAGR HIMALAYAN LARCH Latitude : 2759 Longitude : 08945 Elevation : M Series intercorrelation: 0.540 Avg mean sensitivity : 0.198 Avg standard deviation : 0.488 Avg autocorrelation : 0.910 Number dated series : 21 Segment length tested : 50 Number problem segments: 25 Pct problem segments : 11.26 PART 5: CORRELATION OF SERIES BY SEGMENTS: Laya-1 14:31 Tue 06 Sep 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 1975 1724 1749 1774 1799 1824 1849 1874 1899 1924 1949 1974 1999 2024 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 LY1LG02A 1708 2006 .21B .47 .62 .57 .46 .57 .55 .56 .61 .59 .63 .61 2 LY1LG01A 1807 2006 .40 .52 .50 .72 .66 .37 .58 .69 3 LY1LG01C 1842 2006 .64 .66 .65 .48 .49 .48 .53 4 LY1LG02B 1699 2006 .42 .39 .57 .60 .64 .63 .74 .74 .69 .78 .79 .67 .59 5 LY1LG06A 1696 2006 .60 .58 .65 .43 .21B .47 .65 .64 .66 .63 .56 .56 .46 6 LY1LG06B 1850 2006 .30A .66 .71 .54 .58 .69 7 LY1LG12B 1821 2006 .45 .50 .56 .67 .72 .78 .74 .65 8 LY1LG06C 1822 2006 .35 .43 .66 .73 .73 .69 .76 .72 9 LY1LG12A 1804 2006 .36 .52 .71 .31B .39 .70 .64 .56 10 LY1LGO3A 1707 2006 .40B .58 .63 .56 .48 .47 .55 .78 .74 .55 .56 .49 11 LY1LG03B 1727 2006 .69 .67 .48 .58 .73 .63 .65 .60 .67 .69 .64 12 LY1LG09A 1680 2006 .60 .62 .53 .51 .27B .31B .75 .66 .67 .62 .58 .68 .65 13 LY1LG09B 1681 2006 .57 .57 .51 .40 .15B .27B .51 .35 .41 .30B .53 .66 .56 14 LY1LG01D 1801 2006 .53 .68 .74 .54 .26A .31A .47 .55 15 LY1LG07B 1677 2006 .58 .67 .58 .53 .59 .46 .26A .27B .53 .52 .35 .46 .51 16 LY1LG08A 1700 2006 .40 .47 .74 .63 .39B .44 .40 .45 .54 .54 .76 .73 17 LY1LG08B 1677 2006 .42 .60 .55 .54 .66 .58 .43 .31A .62 .68 .57 .65 .56 18 LY1LG10B 1684 1971 .15B .33 .66 .59 .49 .29A .50 .68 .68 .72 .56 19 LY1LG07A 1644 2006 .42 .55 .42 .37 .21B .26B .43 .39 .40 .24A .30A .60 .58 20 LY1LG04B 1780 2006 .26A .32A .61 .65 .61 .68 .70 .65 .66 21 LY1LG04A 1741 2006 .38 .37 .46 .49 .42 .32A .44 .58 .77 .74 .70 Av segment correlation .47 .48 .54 .54 .44 .42 .54 .54 .59 .58 .57 .63 .61 PART 7: DESCRIPTIVE STATISTICS: Laya-1 14:31 Tue 06 Sep 2011 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 LY1LG02A 1708 2006 299 12 1 .537 .73 2.60 .483 .920 .180 2.59 .380 -.037 6 2 LY1LG01A 1807 2006 200 8 0 .536 .81 3.00 .455 .875 .195 2.44 .291 -.039 1 3 LY1LG01C 1842 2006 165 7 0 .540 .66 3.02 .400 .888 .187 2.67 .365 .001 1 4 LY1LG02B 1699 2006 308 13 0 .634 .66 3.52 .691 .924 .228 2.46 .323 -.023 1 5 LY1LG06A 1696 2006 311 13 1 .525 .73 2.68 .445 .890 .199 2.59 .348 -.013 1 6 LY1LG06B 1850 2006 157 6 1 .544 .80 2.93 .468 .838 .197 2.69 .403 -.054 1 7 LY1LG12B 1821 2006 186 8 0 .670 .97 4.48 .691 .811 .258 2.52 .397 -.074 2 8 LY1LG06C 1822 2006 185 8 0 .651 .68 2.16 .348 .844 .188 3.13 .403 -.019 1 9 LY1LG12A 1804 2006 203 8 1 .524 1.29 5.10 .880 .818 .252 2.64 .464 -.011 1 10 LY1LGO3A 1707 2006 300 12 1 .545 .62 2.83 .501 .966 .161 2.67 .333 -.011 1 11 LY1LG03B 1727 2006 280 11 0 .635 .62 2.63 .570 .958 .201 2.57 .354 -.005 1 12 LY1LG09A 1680 2006 327 13 2 .589 .66 2.72 .484 .922 .218 2.59 .278 -.042 1 13 LY1LG09B 1681 2006 326 13 3 .441 .76 3.70 .586 .930 .227 2.67 .321 -.073 1 14 LY1LG01D 1801 2006 206 8 2 .507 .75 3.12 .467 .871 .223 2.59 .417 .000 4 15 LY1LG07B 1677 2006 330 13 2 .480 .80 2.79 .469 .943 .135 2.55 .338 .000 1 16 LY1LG08A 1700 2006 307 12 1 .534 .74 2.83 .456 .909 .198 2.66 .323 -.035 3 17 LY1LG08B 1677 2006 330 13 1 .528 .85 2.49 .586 .940 .206 2.49 .309 -.021 1 18 LY1LG10B 1684 1971 288 11 2 .503 .45 1.45 .257 .907 .203 2.74 .385 -.006 1 19 LY1LG07A 1644 2006 363 13 4 .386 .59 2.71 .467 .950 .158 2.48 .276 -.045 1 20 LY1LG04B 1780 2006 227 9 2 .597 .37 .99 .170 .899 .169 2.43 .318 -.008 1 21 LY1LG04A 1741 2006 266 11 1 .554 .57 1.77 .354 .924 .206 2.42 .278 -.038 1 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 5564 222 25 .540 .71 5.10 .488 .910 .198 3.13 .341 -.027