Prelude Lake East, Northwest Territories, Canada - cana292 Additional Site Information Sonia St-Onge Michael Pisaric Steve Kokelj Purpose of Collection: Climatology - precipitation analyses Detrend Method: Negative exponontial or linear regression with negative or 0 slope Cores are stored at: Department of Geography and Environmental Studies, Carleton University, Ottawa CANADA Attn: Michael Pisaric Notes: Samples were collected from rock outcrops in the Yellowknife region. There was little to no soil cover and ground cover was predominantly mosses and lichens. Reference: Pisaric, M.F.J., St-Onge, S.M. and Kokelj, S.V. In press. Tree-ring reconstruction of early-growing season precipitation from Yellowknife, Northwest Territories. Arctic, Antarctic and Alpine Research. Accepted June 24, 2009. COFECHA output: Chronology file name : CANA292.CRN Measurement file name : CANA292.RWL Date checked : 24JUL09 Checked by : B. Bauer Beginning year : 1936 Ending year : 2005 Principal investigators: Sonia St-Onge Michael Pisaric Steve Kokelj Site name : Prelude Lake East Site location : Canada Species information : PIBN JACK PINE Latitude : 6231 Longitude : -11349 Elevation : 199M Series intercorrelation: 0.691 Avg mean sensitivity : 0.363 Avg standard deviation : 0.296 Avg autocorrelation : 0.552 Number dated series : 40 Segment length tested : 50 Number problem segments: 1 Pct problem segments : 1.09 PART 5: CORRELATION OF SERIES BY SEGMENTS: Prelude Lake East 17:05 Fri 24 Jul 2009 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 1925 1950 1975 1974 1999 2024 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 PREE1A 1950 2005 .79 .80 2 PREE1B 1942 2005 .58 .73 .74 3 PREE2A 1942 2005 .67 .63 .59 4 PREE2B 1942 2005 .60 .68 .63 5 PREE3A 1958 2005 .60 6 PREE3B 1956 2005 .62 7 PREE4A 1939 2005 .72 .78 .79 8 PREE4B 1939 2005 .69 .78 .79 9 PREE5A 1952 2005 .81 .83 10 PREE5B 1952 2005 .73 .75 11 PREE7A 1967 2005 .58 12 PREE7B 1967 2005 .73 13 PREE8A 1947 2005 .79 .78 .75 14 PREE8B 1946 2005 .74 .77 .78 15 PREE9A 1947 2005 .51 .48 .50 16 PREE9B 1947 2005 .55 .54 .54 17 PREE12A 1960 2005 .84 18 PREE12B 1952 2005 .76 .78 19 PREE13A 1942 2005 .35 .49 .47 20 PREE13B 1942 2005 .30A .39 .34 21 PREE14A 1966 2005 .64 22 PREE14B 1958 2005 .55 23 PREE19A 1936 2002 .65 .46 .44 24 PREE19B 1936 2005 .70 .47 .48 25 PREE20A 1940 2005 .54 .76 .76 26 PREE20B 1940 2004 .65 .65 .66 27 PREE22A 1967 2005 .61 28 PREE22B 1967 2005 .64 29 PREE23A 1940 2005 .70 .81 .79 30 PREE23B 1940 2005 .74 .80 .81 31 PREE26A 1968 2001 .76 32 PREE26B 1967 2003 .73 33 PREE28A 1944 2003 .81 .82 .83 34 PREE28B 1944 2005 .81 .84 .84 35 PREE29A 1945 2005 .84 .82 .82 36 PREE29B 1966 2001 .83 37 PREE30C 1940 2005 .65 .80 .81 38 PREE30D 1940 2005 .67 .78 .78 39 PREE40A 1947 2005 .90 .90 .86 40 PREE40B 1947 2005 .83 .82 .83 Av segment correlation .67 .70 .71 PART 7: DESCRIPTIVE STATISTICS: Prelude Lake East 17:05 Fri 24 Jul 2009 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 PREE1A 1950 2005 56 2 0 .786 .72 1.62 .320 .316 .346 2.70 .552 .230 1 2 PREE1B 1942 2005 64 3 0 .725 .55 1.22 .215 .397 .307 2.78 .447 .133 1 3 PREE2A 1942 2005 64 3 0 .585 .69 1.86 .332 .592 .273 2.83 .617 -.021 1 4 PREE2B 1942 2005 64 3 0 .651 .61 1.17 .245 .597 .301 2.67 .613 .001 1 5 PREE3A 1958 2005 48 1 0 .602 .68 1.46 .275 .681 .210 2.74 .650 -.050 1 6 PREE3B 1956 2005 50 1 0 .619 .75 1.43 .206 .433 .208 2.65 .502 -.023 1 7 PREE4A 1939 2005 67 3 0 .775 .38 1.09 .231 .513 .445 2.83 .555 -.004 1 8 PREE4B 1939 2005 67 3 0 .788 .31 1.02 .210 .548 .590 2.51 .459 -.001 1 9 PREE5A 1952 2005 54 2 0 .815 .50 1.33 .233 .340 .378 2.76 .539 .057 1 10 PREE5B 1952 2005 54 2 0 .733 .62 1.33 .269 .358 .355 2.65 .556 .017 4 11 PREE7A 1967 2005 39 1 0 .575 .51 1.12 .257 .733 .300 2.44 .415 .001 1 12 PREE7B 1967 2005 39 1 0 .735 .55 1.23 .194 .391 .254 2.73 .552 -.025 1 13 PREE8A 1947 2005 59 3 0 .753 .57 1.63 .296 .342 .471 2.90 .589 -.055 1 14 PREE8B 1946 2005 60 3 0 .721 .33 .73 .138 .290 .386 2.75 .550 -.115 1 15 PREE9A 1947 2005 59 3 0 .470 1.11 2.77 .558 .812 .257 2.79 .529 .037 1 16 PREE9B 1947 2005 59 3 0 .545 .96 1.90 .374 .700 .246 2.66 .487 .031 2 17 PREE12A 1960 2005 46 1 0 .837 .64 1.60 .244 .571 .258 2.83 .509 .030 1 18 PREE12B 1952 2005 54 2 0 .756 .88 1.59 .278 .532 .208 2.84 .605 .019 1 19 PREE13A 1942 2005 64 3 0 .513 .90 2.10 .398 .788 .216 2.99 .511 .098 1 20 PREE13B 1942 2005 64 3 1 .378 .76 1.54 .283 .682 .232 2.67 .435 .004 1 21 PREE14A 1966 2005 40 1 0 .638 .82 1.54 .294 .737 .228 2.53 .552 -.059 1 22 PREE14B 1958 2005 48 1 0 .549 .76 1.31 .244 .631 .199 2.67 .536 .044 1 23 PREE19A 1936 2002 67 3 0 .510 .36 1.50 .274 .657 .520 2.66 .498 -.037 1 24 PREE19B 1936 2005 70 3 0 .544 .40 1.60 .294 .599 .511 2.69 .477 -.038 1 25 PREE20A 1940 2005 66 3 0 .672 .37 1.08 .242 .525 .492 2.68 .522 -.003 1 26 PREE20B 1940 2004 65 3 0 .648 .33 .92 .201 .446 .574 2.71 .563 -.056 1 27 PREE22A 1967 2005 39 1 0 .613 .97 1.94 .356 .535 .293 2.42 .375 -.033 1 28 PREE22B 1967 2005 39 1 0 .642 1.59 2.74 .567 .598 .227 2.51 .423 .018 1 29 PREE23A 1940 2005 66 3 0 .777 .72 2.41 .476 .731 .415 2.40 .407 -.027 1 30 PREE23B 1940 2005 66 3 0 .797 .71 1.83 .388 .635 .377 2.53 .478 .005 1 31 PREE26A 1968 2001 34 1 0 .755 .54 .99 .234 .633 .327 2.52 .503 .032 1 32 PREE26B 1967 2003 37 1 0 .731 .41 .78 .166 .469 .292 2.66 .642 -.031 2 33 PREE28A 1944 2003 60 3 0 .808 .59 1.13 .255 .592 .308 2.84 .615 .028 1 34 PREE28B 1944 2005 62 3 0 .781 .55 1.29 .244 .608 .306 2.65 .449 -.031 1 35 PREE29A 1945 2005 61 3 0 .824 .90 2.26 .433 .555 .362 2.70 .539 .004 1 36 PREE29B 1966 2001 36 1 0 .832 .62 1.04 .217 .307 .336 2.55 .560 -.029 1 37 PREE30C 1940 2005 66 3 0 .761 .76 1.89 .419 .477 .496 2.45 .442 -.065 2 38 PREE30D 1940 2005 66 3 0 .782 .72 1.87 .417 .575 .507 2.52 .380 .008 1 39 PREE40A 1947 2005 59 3 0 .854 .33 .94 .203 .490 .570 2.58 .494 -.010 1 40 PREE40B 1947 2005 59 3 0 .819 .39 1.15 .249 .563 .485 2.50 .512 -.036 1 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 2237 92 1 .691 .63 2.77 .296 .552 .363 2.99 .515 .001