Central Pond, Northwest Territories, Canada - cana285 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 : CANA285.CRN Measurement file name : CANA285.RWL Date checked : 24JUL09 Checked by : B. Bauer Beginning year : 1864 Ending year : 2005 Principal investigators: Sonia St-Onge Michael Pisaric Steve Kokelj Site name : Central Pond Site location : Canada Species information : PIBN JACK PINE Latitude : 6230 Longitude : -11421 Elevation : 194M Series intercorrelation: 0.648 Avg mean sensitivity : 0.424 Avg standard deviation : 0.303 Avg autocorrelation : 0.560 Number dated series : 45 Segment length tested : 50 Number problem segments: 3 Pct problem segments : 3.41 PART 5: CORRELATION OF SERIES BY SEGMENTS: Central Pond 15:50 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 1875 1900 1925 1950 1975 1924 1949 1974 1999 2024 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 CEN2A 1958 2005 .32A 2 CEN2B 1958 2005 .45 3 CEN3A 1880 2005 .64 .72 .75 .65 .63 4 CEN3B 1880 2005 .71 .72 .71 .65 .65 5 CEN4A 1956 2005 .58 6 CEN4B 1958 2005 .66 7 CEN6A 1958 2005 .70 8 CEN6B 1958 2002 .54 9 CEN8A 1901 2005 .67 .63 .59 .61 10 CEN8B 1912 2005 .73 .76 .65 .65 11 CEN9A 1864 2005 .63 .72 .68 .71 .78 12 CEN9B 1881 2005 .54 .63 .62 .74 .73 13 CEN10A 1964 2005 .77 14 CEN10B 1958 2005 .74 15 CEN13A 1964 2005 .68 16 CEN13B 1964 2005 .79 17 CEN17A 1956 2005 .52 18 CEN17B 1956 2005 .63 19 CEN18A 1955 2005 .54 .51 20 CEN18B 1958 2005 .67 21 CEN20A 1956 2005 .75 22 CEN20B 1958 2005 .62 23 CEN21A 1946 2005 .79 .79 .82 24 CEN21B 1923 2005 .62 .64 .79 .81 25 CEN22B 1958 2005 .63 26 CEN24A 1891 1989 .42 .58 .69 .77 27 CEN24B 1891 2000 .53 .62 .67 .72 .72 28 CEN26A 1898 2005 .46 .50 .76 .69 .72 29 CEN26B 1898 2005 .26B .30A .65 .74 .79 30 CEN28A 1964 2005 .60 31 CEN28B 1964 2005 .58 32 CEN30A 1958 2005 .52 33 CEN30B 1958 2005 .48 34 CEN33A 1958 2005 .69 35 CEN33B 1958 2005 .62 36 CEN34A 1958 2005 .80 37 CEN34B 1958 2005 .82 38 CEN35A 1963 2005 .79 39 CEN35B 1964 2005 .81 40 CEN36A 1958 2005 .62 41 CEN36B 1956 2005 .65 42 CEN37A 1967 2005 .61 43 CEN37B 1967 2005 .69 44 CEN38A 1958 2005 .60 45 CEN38B 1956 2005 .72 Av segment correlation .52 .62 .70 .66 .70 PART 7: DESCRIPTIVE STATISTICS: Central Pond 15:50 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 CEN2A 1958 2005 48 1 1 .323 .62 1.24 .308 .442 .484 2.50 .463 .047 1 2 CEN2B 1958 2005 48 1 0 .451 .81 1.71 .423 .590 .408 2.47 .439 .022 1 3 CEN3A 1880 2005 126 5 0 .649 .50 1.68 .291 .695 .402 2.73 .447 .004 1 4 CEN3B 1880 2005 126 5 0 .668 .39 1.23 .207 .695 .349 2.57 .498 .091 1 5 CEN4A 1956 2005 50 1 0 .581 .75 1.33 .269 .607 .285 2.57 .502 -.081 1 6 CEN4B 1958 2005 48 1 0 .658 .69 1.51 .288 .691 .271 2.51 .486 -.056 1 7 CEN6A 1958 2005 48 1 0 .695 .40 1.03 .219 .634 .414 2.76 .568 -.081 1 8 CEN6B 1958 2002 45 1 0 .542 .26 .69 .171 .806 .381 2.83 .609 .053 1 9 CEN8A 1901 2005 105 4 0 .634 .42 1.27 .271 .783 .334 2.76 .437 -.036 1 10 CEN8B 1912 2005 94 4 0 .698 .39 1.29 .236 .777 .271 2.64 .445 -.057 1 11 CEN9A 1864 2005 142 5 0 .687 .50 1.55 .233 .643 .275 2.82 .438 .007 1 12 CEN9B 1881 2005 125 5 0 .657 .51 1.18 .218 .660 .273 2.84 .451 -.006 1 13 CEN10A 1964 2005 42 1 0 .773 .58 1.31 .217 .127 .358 2.88 .646 .037 1 14 CEN10B 1958 2005 48 1 0 .743 .68 1.47 .288 .616 .280 2.55 .510 .005 1 15 CEN13A 1964 2005 42 1 0 .677 .69 1.31 .248 .358 .300 2.67 .613 .053 1 16 CEN13B 1964 2005 42 1 0 .793 .70 1.42 .261 .383 .303 2.62 .595 -.020 1 17 CEN17A 1956 2005 50 1 0 .519 .33 1.03 .190 .483 .494 2.55 .431 -.125 1 18 CEN17B 1956 2005 50 1 0 .632 .54 1.39 .305 .284 .531 2.82 .542 -.083 1 19 CEN18A 1955 2005 51 2 0 .507 .64 1.76 .341 .567 .442 2.89 .612 -.012 1 20 CEN18B 1958 2005 48 1 0 .669 1.08 2.20 .507 .516 .394 2.76 .690 .033 1 21 CEN20A 1956 2005 50 1 0 .748 .31 1.34 .247 .544 .649 2.55 .538 -.062 1 22 CEN20B 1958 2005 48 1 0 .619 .62 1.77 .388 .688 .372 2.81 .550 .060 2 23 CEN21A 1946 2005 60 3 0 .804 .40 1.53 .334 .572 .838 2.75 .622 -.067 1 24 CEN21B 1923 2005 83 4 0 .725 .53 1.85 .362 .438 .636 2.81 .505 -.059 1 25 CEN22B 1958 2005 48 1 0 .626 1.03 2.05 .379 .457 .282 2.86 .688 .021 1 26 CEN24A 1891 1989 99 4 0 .638 .61 2.61 .468 .745 .338 2.88 .467 -.028 2 27 CEN24B 1891 2000 110 5 0 .660 .46 1.16 .277 .710 .381 2.72 .418 .044 1 28 CEN26A 1898 2005 108 5 0 .609 .24 .81 .159 .384 .736 2.71 .630 -.024 1 29 CEN26B 1898 2005 108 5 2 .551 .22 .69 .152 .281 .734 2.70 .532 -.024 1 30 CEN28A 1964 2005 42 1 0 .601 .64 1.82 .391 .320 .547 2.73 .670 .018 1 31 CEN28B 1964 2005 42 1 0 .577 .48 2.03 .374 .323 .629 2.98 .676 -.010 1 32 CEN30A 1958 2005 48 1 0 .516 .91 1.95 .439 .475 .355 2.56 .565 .020 1 33 CEN30B 1958 2005 48 1 0 .476 1.23 3.01 .654 .499 .393 2.78 .609 .045 1 34 CEN33A 1958 2005 48 1 0 .687 .64 1.41 .321 .495 .417 2.44 .394 -.024 1 35 CEN33B 1958 2005 48 1 0 .622 .48 1.09 .221 .350 .488 2.66 .518 .027 1 36 CEN34A 1958 2005 48 1 0 .798 .73 1.87 .433 .719 .366 2.58 .429 .005 1 37 CEN34B 1958 2005 48 1 0 .821 .68 2.16 .453 .600 .437 2.71 .508 -.066 1 38 CEN35A 1963 2005 43 1 0 .793 .86 1.82 .397 .530 .405 2.66 .521 -.039 1 39 CEN35B 1964 2005 42 1 0 .805 .82 1.95 .377 .501 .370 2.80 .545 .053 1 40 CEN36A 1958 2005 48 1 0 .621 .86 2.08 .386 .442 .353 2.85 .587 .007 1 41 CEN36B 1956 2005 50 1 0 .648 .92 1.89 .382 .298 .379 2.61 .559 .053 1 42 CEN37A 1967 2005 39 1 0 .610 .75 1.81 .474 .670 .360 2.80 .604 -.080 1 43 CEN37B 1967 2005 39 1 0 .690 .75 1.79 .466 .715 .339 2.85 .640 -.024 1 44 CEN38A 1958 2005 48 1 0 .605 .33 1.12 .256 .562 .432 2.57 .423 -.060 1 45 CEN38B 1956 2005 50 1 0 .715 .27 .79 .182 .451 .578 2.81 .625 -.123 1 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 2823 88 3 .648 .56 3.01 .303 .560 .424 2.98 .522 -.010