Xiangchen, Sichuan, China - chin017 Additional Site Information Jinbao Li, Keyan Fang, Yang Tao, Edward Cook 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 : CHIN017.CRN Measurement file name : CHIN017.RWL Date checked : 28OCT11 Checked by : B. Bauer Beginning year : 1452 Ending year : 2007 Principal investigators: Jinbao Li Keyan Fang Yang Tao Edward Cook Site name : Xiangchen Site location : China Species information : JUTI TIBETAN JUNIPER Latitude : 2854 Longitude : 9945 Elevation : 3980M Series intercorrelation: 0.528 Avg mean sensitivity : 0.247 Avg standard deviation : 0.246 Avg autocorrelation : 0.847 Number dated series : 43 Segment length tested : 50 Number problem segments: 69 Pct problem segments : 14.26 PART 5: CORRELATION OF SERIES BY SEGMENTS: Xiangchen 09:42 Fri 28 Oct 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 1475 1500 1525 1550 1575 1600 1625 1650 1675 1700 1725 1750 1775 1800 1825 1850 1875 1900 1925 1950 1524 1549 1574 1599 1624 1649 1674 1699 1724 1749 1774 1799 1824 1849 1874 1899 1924 1949 1974 1999 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 CHN01A 1762 2007 .55 .64 .75 .64 .57 .58 .59 .55 .51 2 CHN01B 1727 2007 .46 .53 .52 .59 .54 .75 .80 .46 .52 .55 3 CHN02A 1843 2007 .24B .72 .71 .30A .38 .58 4 CHN02B 1860 2007 .76 .74 .32A .42 .61 5 CHN03A 1650 1887 .61 .63 .37 .23B .39 .54 .57 .52 .53 6 CHN04A 1710 1975 .26B .52 .53 .69 .81 .71 .69 .74 .79 .82 .81 7 CHN04B 1694 1976 .36 .34 .39 .57 .77 .82 .74 .83 .77 .51 .60 .58 8 CHN05A 1767 1994 .51 .55 .61 .59 .74 .69 .41 .50 .48 9 CHN06A 1853 2007 .61 .64 .56 .65 .57 10 CHN06B 1798 2007 .33 .32A .54 .84 .85 .75 .72 .64 11 CHN07A 1641 1941 -.04B .13B .46 .50 .53 .50 .61 .73 .63 .85 .83 .61 12 CHN07B 1662 2007 .40 .34 .52 .47 .60 .64 .55 .35B .54 .70 .48 .65 .66 13 CHN08A 1651 1913 .76 .69 .55 .67 .49 .56 .55 .31A .13B .12B 14 CHN08B 1721 2007 .32A .40 .39 .60 .72 .71 .53 .43 .27B .37 .48 15 CHN09A 1760 2007 .21B .33 .45 .39 .39 .41B .11B .19B .29B 16 CHN09B 1771 2007 .37 .33A .36 .44 .67 .72 .43 .36 .41B 17 CHN12A 1667 2007 .65 .60 .66 .69 .73 .72 .73 .50 .72 .83 .52 .53 .71 18 CHN12B 1667 1917 .65 .66 .75 .63 .69 .77 .77 .51 .37 .41 19 CHN12C 1684 2007 .75 .68 .62 .68 .71 .79 .57 .73 .81 .55 .62 .72 20 CHN14A 1590 2007 -.05B .15B .57 .66 .68 .72 .54 .54 .56 .68 .79 .69 .67 .59 .56 .64 21 CHN14B 1620 2007 .43 .48 .54 .56 .58 .66 .66 .70 .68 .60 .55 .53 .58 .83 .85 22 CHN15A 1747 2007 .75 .75 .81 .84 .83 .89 .85 .55 .57 .75 23 CHN15B 1649 2007 .50 .50 .59 .68 .64 .73 .80 .88 .81 .86 .87 .61 .52 .57 24 CHN16A 1723 2007 .24A .23A .52 .65 .72 .66 .56 .63 .63 .64 .72 25 CHN16B 1720 2007 .40 .33B .36B .52 .69 .54 .50 .60 .56 .59 .61 26 CHN18A 1717 2007 .34B .33B .34 .48 .63 .65 .43B .38B .53 .65 .52 27 CHN18B 1708 2007 .25B .22B .37 .59 .76 .70 .46 .42 .45 .48 .47 28 CHN19A 1726 2007 .73 .65 .63 .62 .39 .52 .65 .51 .42 .40 29 CHN19B 1719 2007 .52 .55 .40 .61 .67 .44 .59 .63 .30B .40 .54 30 CHN20A 1726 2007 .29B .51 .70 .81 .86 .88 .80 .67 .56 .60 31 CHN20B 1766 1943 .61 .63 .78 .78 .84 .85 .84 32 CHN21A 1691 1832 .60 .52 .35 .45 .70 .71 33 CHN21B 1696 1960 .63 .51 .46 .52 .66 .63 .61 .67 .65 .36 .34 34 CHN22A 1452 1873 -.06B .02B .19B .05B .02B .15B .20B .31A .36 .39 .61 .57 .47 .58 .57 35 CHN22B 1721 2007 .49 .48 .54 .50 .54 .52 .58 .58 .37 .50 .50 36 CHN23A 1760 1930 .38 .41 .64 .70 .66 .65 .68 37 CHN23B 1627 2007 .33 .10B .01B .12B .19B .46 .61 .49 .40 .56 .64 .58 .52 .39 38 CHN24B 1739 2007 .58 .57 .45 .35 .45 .67 .64 .57 .40 .41 39 CHN25A 1493 2007 -.14B-.16B-.02B .09B .09B .26A .39 .53 .56 .49 .55 .58 .55 .38 .33 .50 .53 .47 .50 .35 40 CHN25C 1657 2007 .16B .33A .32B .46 .48 .58 .49 .34 .53 .62 .42 .45 .52 41 CHN27A 1867 1999 .68 .71 .39 .55 .59 42 CHN28A 1513 1913 -.09B-.06B-.01B .25A .42 .16B .21B .44 .58 .34B .33 .46 .44 .33 .28B .38 43 CHN28B 1597 1780 .13B .15B .09B .29A .38 .40 .42 .42 Av segment correlation -.10 -.08 .04 .05 .09 .26 .30 .43 .51 .46 .48 .51 .59 .64 .56 .62 .64 .51 .53 .56 PART 5: CORRELATION OF SERIES BY SEGMENTS: Xiangchen 09:42 Fri 28 Oct 2011 Page 6 ----------------------------------------------------------------------------------------------------------------------------------- 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 1975 2024 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 CHN01A 1762 2007 .34 2 CHN01B 1727 2007 .51 3 CHN02A 1843 2007 .51 4 CHN02B 1860 2007 .61 9 CHN06A 1853 2007 .51 10 CHN06B 1798 2007 .52 12 CHN07B 1662 2007 .58 14 CHN08B 1721 2007 .46 15 CHN09A 1760 2007 .35 16 CHN09B 1771 2007 .38B 17 CHN12A 1667 2007 .78 19 CHN12C 1684 2007 .79 20 CHN14A 1590 2007 .63 21 CHN14B 1620 2007 .80 22 CHN15A 1747 2007 .83 23 CHN15B 1649 2007 .69 24 CHN16A 1723 2007 .76 25 CHN16B 1720 2007 .66 26 CHN18A 1717 2007 .50 27 CHN18B 1708 2007 .46 28 CHN19A 1726 2007 .41 29 CHN19B 1719 2007 .62 30 CHN20A 1726 2007 .63 35 CHN22B 1721 2007 .49 37 CHN23B 1627 2007 .34 38 CHN24B 1739 2007 .41 39 CHN25A 1493 2007 .41 40 CHN25C 1657 2007 .48 Av segment correlation .55 PART 7: DESCRIPTIVE STATISTICS: Xiangchen 09:42 Fri 28 Oct 2011 Page 10 ----------------------------------------------------------------------------------------------------------------------------------- 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 CHN01A 1762 2007 246 10 0 .557 .63 1.76 .355 .918 .198 2.63 .431 .006 1 2 CHN01B 1727 2007 281 11 0 .580 .63 1.95 .439 .954 .201 2.40 .320 .009 1 3 CHN02A 1843 2007 165 7 2 .553 .66 1.77 .452 .953 .245 2.38 .243 -.045 2 4 CHN02B 1860 2007 148 6 1 .640 .81 2.54 .468 .932 .189 2.36 .301 -.044 1 5 CHN03A 1650 1887 238 9 1 .493 .28 .68 .132 .847 .219 2.71 .390 .036 2 6 CHN04A 1710 1975 266 11 1 .637 .36 1.41 .278 .909 .274 2.65 .372 -.024 3 7 CHN04B 1694 1976 283 12 0 .661 .32 1.05 .208 .905 .271 2.51 .309 -.027 3 8 CHN05A 1767 1994 228 9 0 .572 .50 1.30 .273 .949 .135 2.59 .423 .005 1 9 CHN06A 1853 2007 155 6 0 .585 .46 1.53 .307 .885 .308 2.94 .454 -.064 2 10 CHN06B 1798 2007 210 9 1 .627 .56 1.50 .324 .910 .248 2.52 .320 -.077 2 11 CHN07A 1641 1941 301 12 2 .510 .57 1.51 .310 .883 .229 2.53 .284 -.039 1 12 CHN07B 1662 2007 346 14 1 .527 .43 1.04 .221 .871 .229 2.38 .247 -.058 1 13 CHN08A 1651 1913 263 10 3 .442 .53 1.01 .145 .764 .157 2.61 .323 -.001 1 14 CHN08B 1721 2007 287 12 2 .465 .50 1.20 .304 .933 .208 2.61 .407 .009 2 15 CHN09A 1760 2007 248 10 5 .340 .55 1.44 .272 .809 .283 2.36 .302 -.020 1 16 CHN09B 1771 2007 237 10 3 .509 .60 1.58 .343 .840 .281 2.49 .280 -.015 1 17 CHN12A 1667 2007 341 14 0 .674 .44 1.00 .204 .846 .227 2.45 .274 -.029 1 18 CHN12B 1667 1917 251 10 0 .570 .37 1.05 .212 .884 .250 2.44 .338 -.029 1 19 CHN12C 1684 2007 324 13 0 .709 .41 .94 .210 .864 .229 2.52 .362 -.029 1 20 CHN14A 1590 2007 418 17 2 .569 .26 .87 .153 .849 .254 2.79 .442 -.009 1 21 CHN14B 1620 2007 388 16 0 .615 .25 .87 .148 .844 .266 2.55 .332 -.010 1 22 CHN15A 1747 2007 261 11 0 .778 .37 1.06 .200 .760 .302 2.49 .327 -.036 1 23 CHN15B 1649 2007 359 15 0 .716 .34 .89 .171 .655 .347 2.43 .291 -.030 1 24 CHN16A 1723 2007 285 12 2 .594 .41 1.11 .185 .719 .266 2.56 .296 -.029 1 25 CHN16B 1720 2007 288 12 2 .527 .36 .86 .178 .753 .290 2.47 .305 .003 2 26 CHN18A 1717 2007 291 12 4 .466 .38 1.91 .310 .873 .360 2.64 .315 -.015 1 27 CHN18B 1708 2007 300 12 2 .463 .43 1.77 .310 .867 .336 2.68 .394 .017 1 28 CHN19A 1726 2007 282 11 0 .548 .39 1.11 .265 .934 .310 2.59 .429 -.034 1 29 CHN19B 1719 2007 289 12 1 .532 .49 1.79 .295 .926 .190 2.52 .320 -.034 2 30 CHN20A 1726 2007 282 11 1 .691 .60 2.30 .503 .943 .340 2.55 .374 -.034 1 31 CHN20B 1766 1943 178 7 0 .736 .78 2.05 .455 .917 .209 2.51 .382 -.055 1 32 CHN21A 1691 1832 142 6 0 .595 .57 1.54 .279 .877 .197 2.79 .478 -.022 2 33 CHN21B 1696 1960 265 11 0 .569 .36 1.28 .267 .935 .241 2.58 .343 -.024 1 34 CHN22A 1452 1873 422 15 8 .266 .26 .59 .099 .648 .255 2.48 .301 -.001 4 35 CHN22B 1721 2007 287 12 0 .514 .41 .84 .189 .829 .266 2.51 .298 .020 2 36 CHN23A 1760 1930 171 7 0 .577 .25 .57 .129 .916 .186 2.44 .327 .001 1 37 CHN23B 1627 2007 381 15 4 .386 .40 1.11 .220 .909 .208 2.51 .375 .018 1 38 CHN24B 1739 2007 269 11 0 .513 .26 1.02 .143 .673 .370 2.53 .359 -.044 2 39 CHN25A 1493 2007 515 21 6 .315 .60 1.17 .217 .759 .209 2.67 .312 .007 1 40 CHN25C 1657 2007 351 14 3 .410 .54 1.72 .251 .895 .157 2.66 .404 .003 1 41 CHN27A 1867 1999 133 5 0 .605 .57 1.63 .245 .781 .224 2.44 .366 .002 1 42 CHN28A 1513 1913 401 16 8 .281 .52 1.18 .208 .814 .195 2.66 .398 .016 4 43 CHN28B 1597 1780 184 8 4 .297 .49 1.16 .208 .835 .189 2.53 .397 -.030 3 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 11960 484 69 .528 .45 2.54 .246 .847 .247 2.94 .345 -.015