Gasa-1, Bhutan - bt019 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 : BT019.CRN Measurement file name : BT019.RWL Date checked : 01SEP11 Checked by : B. Bauer Beginning year : 1660 Ending year : 2006 Principal investigators: Edward R. Cook, Paul J. Krusic, and Dorji Dukpa Site name : Gasa-1 Site location : Bhutan Species information : JURE DROOPING JUNIPER Latitude : 2755 Longitude : 08945 Elevation : M Series intercorrelation: 0.413 Avg mean sensitivity : 0.239 Avg standard deviation : 0.535 Avg autocorrelation : 0.808 Number dated series : 15 Segment length tested : 50 Number problem segments: 45 Pct problem segments : 34.09 PART 5: CORRELATION OF SERIES BY SEGMENTS: Gasa-1 16:51 Thu 01 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 1725 1750 1775 1800 1825 1850 1875 1900 1925 1950 1975 1774 1799 1824 1849 1874 1899 1924 1949 1974 1999 2024 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 GA1JR01B 1818 2006 .36 .32A .42 .58 .65 .61 .44 .45 2 GA1JR06A 1833 2006 .35 .31A .33 .47 .26A .33 .44 3 GA1JR12A 1862 2006 .33 .32A .35B .38 .56 .47 4 GA1JR04A 1834 2006 .57 .53 .64 .50 .50 .68 .70 5 GA1JR10A 1660 2006 .38B .51 .53 .65 .66 .59 .49 .40 .34 .20B .25A 6 GA1JR10B 1771 2006 .37 .38 .48 .46 .65 .56 .37 .27B .19B .33 7 GA1JR01A 1751 2006 .49 .33A .26A .32A .54 .57 .57 .61 .68 .73 8 GA1JR07A 1787 2006 .38 .38 .35 .41 .43 .41 .30A .36 .41 9 GA1JR05B 1730 2006 .33B .39 .18B .31A .39 .55 .58 .51 .32A .34 .37 10 GA1JR03A 1757 2006 .45 .43 .44 .34 .49 .47 .32A .29B .29A .55 11 GA1JR17B 1793 2006 .27B .11B .25B .63 .76 .50 .20B .24A .39 12 GA1JR18A 1775 2006 .07B .32A .50 .53 .51 .42 .31A .35 .33A 13 GA1JR02A 1735 2006 .08B .12B .32A .26A .26A .49 .63 .56 .31A .28B .25A 14 GA1JR17A 1780 1949 .28A .26A .55 .60 .49 .24B 15 GA1JR18B 1800 2006 .28A .37 .56 .60 .29A .18B .21A .33 Av segment correlation .26 .39 .32 .34 .41 .51 .53 .44 .35 .37 .43 PART 7: DESCRIPTIVE STATISTICS: Gasa-1 16:51 Thu 01 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 GA1JR01B 1818 2006 189 8 1 .515 1.11 2.20 .327 .731 .181 2.43 .352 -.001 1 2 GA1JR06A 1833 2006 174 7 2 .378 2.13 5.26 1.102 .835 .215 2.60 .410 -.033 2 3 GA1JR12A 1862 2006 145 6 2 .380 2.11 4.87 1.258 .890 .227 2.74 .435 -.028 3 4 GA1JR04A 1834 2006 173 7 0 .564 .88 2.60 .490 .765 .340 2.85 .439 .050 1 5 GA1JR10A 1660 2006 347 11 3 .448 .83 3.06 .479 .867 .214 2.85 .416 -.038 5 6 GA1JR10B 1771 2006 236 10 2 .426 .98 3.09 .471 .772 .218 2.73 .353 -.075 4 7 GA1JR01A 1751 2006 256 10 3 .509 .54 1.53 .245 .852 .190 2.69 .388 .000 1 8 GA1JR07A 1787 2006 220 9 1 .390 1.03 2.73 .491 .759 .250 2.77 .477 -.085 2 9 GA1JR05B 1730 2006 277 11 4 .370 .64 2.07 .318 .806 .265 2.68 .401 -.006 2 10 GA1JR03A 1757 2006 250 10 3 .385 .93 2.79 .547 .813 .267 2.56 .247 -.024 4 11 GA1JR17B 1793 2006 214 9 5 .422 1.01 5.52 .699 .779 .258 2.66 .366 -.018 3 12 GA1JR18A 1775 2006 232 9 4 .365 1.19 3.49 .611 .842 .234 2.69 .368 -.009 2 13 GA1JR02A 1735 2006 272 11 8 .326 .79 2.43 .362 .792 .224 2.94 .474 .030 1 14 GA1JR17A 1780 1949 170 6 3 .401 1.81 5.41 .862 .781 .207 2.82 .504 -.047 2 15 GA1JR18B 1800 2006 207 8 4 .351 .58 1.98 .329 .809 .309 2.69 .469 -.014 1 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 3362 132 45 .413 1.03 5.52 .535 .808 .239 2.94 .404 -.020