Silvertip, Alaska - AK210 Additional Site Information Stewart VanSant Nicolazzo Hubbard Larsen Chronology file name : AK210.CRN Measurement file name : AK210.RWL Date checked : 22MAR24 Checked by : NOAA Paleoclimatology Beginning year : 1749 Ending year : 2023 Principal investigators: Stewart VanSant Nicolazzo Hubbard Larsen Carbaugh Site name : Silvertip Site location : Alaska Species information : PCMA BLACK SPRUCE Latitude : 604 Longitude : 4-1491 Elevation : 260M Series intercorrelation: 0.483 Avg mean sensitivity : 0.229 Avg standard deviation : 0.410 Avg autocorrelation : 0.825 Number dated series : 50 Segment length tested : 50 Number problem segments: 30 Pct problem segments : 12.45 PART 5: CORRELATION OF SERIES BY SEGMENTS: ak210 08:38 Fri 22 Mar 2024 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 1750 1775 1800 1825 1850 1875 1900 1925 1950 1975 1799 1824 1849 1874 1899 1924 1949 1974 1999 2024 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 slvr01a 1950 2023 .38 .32A 2 slvr01b 1933 2023 .54 .73 .66 3 slvr02a 1905 2023 .57 .45 .47 .43 4 slvr02b 1889 2023 .49 .34 .34 .69 .59 5 slvr03a 1921 2023 .41 .44 .54 .50 6 slvr03b 1912 2022 .41 .51 .44 .51 7 slvr04a 1899 2023 .65 .65 .48 .56 .46 8 slvr04b 1833 2023 .26B .52 .71 .64 .44 .55 .50 9 slvr05a 1913 2023 .24A .22B .41 .62 10 slvr05b 1934 2023 .63 .52 .56 11 slvr06a 1772 2023 .59 .58 .54 .57 .70 .84 .58 .37 .55 .42 12 slvr06b 1756 2023 .47 .55 .42 .53 .61 .67 .65 .43 .41 .59 13 slvr07a 1823 2023 .53 .60 .65 .58 .50 .50 .67 .53 14 slvr07b 1829 2023 .57 .65 .54 .45 .55 .67 .66 15 slvr08a 1930 2023 .03B .17A .37 16 slvr08b 1974 2023 .65 17 slvr09a 1955 2023 .44B .66 18 slvr09b 1962 2023 .60 .56 19 slvr10a 1879 2023 .26A .34 .45 .75 .61 20 slvr10b 1889 2023 .28B .55 .67 .70 .63 21 slvr11a 1892 2023 .45 .46 .45 .31A .41 22 slvr11b 1892 2023 .27B .35 .24B .29A .58 23 slvr12a 1932 2023 .35B .35B .34 24 slvr12b 1932 2023 .34 .58 .56 25 slvr13a 1928 2023 .43 .59 .48 26 slvr13b 1920 2023 .27B .39 .61 .61 27 slvr14a 1919 2023 .37B .42 .44 .48 28 slvr14b 1917 2023 .47 .64 .66 .54 29 slvr15a 1944 2023 .54 .40 .44 30 slvr15b 1941 2023 .37 .49 .64 31 slvr16a 1949 2023 .39 .39 .60 32 slvr16b 1946 2023 .23B .28A .56 33 slvr17a 1852 2023 .51 .55 .50 .54 .51 .39B 34 slvr17b 1801 2023 .30A .38 .63 .64 .44 .55 .69 .49 35 slvr18a 1818 2023 .16B .17B .48 .62 .65 .51 .59 .61 36 slvr18b 1829 2023 .40 .51 .58 .57 .57 .69 .64 37 slvr19a 1928 2023 .46 .59 .57 38 slvr19b 1933 2023 .34 .50 .63 39 slvr20a 1909 2023 .51 .42 .49 .67 40 slvr20b 1891 2023 .27A .43 .66 .67 .69 41 slvr21a 1938 2023 .45 .42 .53 42 slvr21b 1913 2023 .40 .46 .63 .71 43 slvr22a 1919 2023 .58 .58 .64 .54 44 slvr22b 1931 2023 .53 .52 .64 45 slvr23a 1921 2023 .17B .20B .32A .59 46 slvr23b 1920 2023 .31B .32B .48 .65 47 slvr24a 1770 2023 .38 .37 .41 .36 .41 .61 .51 .54 .73 .65 48 slvr24b 1749 2023 .42 .64 .53 .50 .67 .81 .55 .53 .62 .54 49 Slvr25a 1766 2023 .54 .57 .38 .47 .57 .63 .62 .48 .50 .52 50 Slvr25b 1806 2023 .02B .56 .76 .62 .48 .55 .47 .51 Av segment correlation .48 .54 .37 .45 .59 .55 .47 .45 .53 .55 PART 7: DESCRIPTIVE STATISTICS: ak210 08:38 Fri 22 Mar 2024 Page 7 ------------------------------------------------------------------------------------------------------------------------------------ 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 slvr01a 1950 2023 74 2 1 .429 .75 1.83 .372 .751 .295 3.00 .558 -.068 1 2 slvr01b 1933 2023 91 3 0 .601 .65 1.27 .231 .682 .221 2.72 .572 -.026 1 3 slvr02a 1905 2023 119 4 0 .455 1.10 3.31 .552 .822 .223 2.62 .489 -.080 2 4 slvr02b 1889 2023 135 5 0 .520 .62 2.65 .371 .897 .165 2.68 .425 -.016 1 5 slvr03a 1921 2023 103 4 0 .462 .58 1.88 .272 .699 .259 2.64 .414 -.080 2 6 slvr03b 1912 2022 111 4 0 .475 .42 1.22 .207 .814 .230 2.58 .531 -.056 3 7 slvr04a 1899 2023 125 5 0 .510 .44 1.83 .335 .907 .233 2.60 .422 -.059 1 8 slvr04b 1833 2023 191 7 1 .453 .30 1.29 .181 .862 .214 2.70 .376 -.033 2 9 slvr05a 1913 2023 111 4 2 .423 .95 1.82 .348 .790 .192 2.77 .553 -.057 3 10 slvr05b 1934 2023 90 3 0 .566 .85 1.88 .226 .641 .172 2.75 .473 -.047 1 11 slvr06a 1772 2023 252 10 0 .531 .85 3.97 .523 .844 .195 2.74 .416 -.108 1 12 slvr06b 1756 2023 268 10 0 .469 .83 2.73 .499 .860 .194 2.65 .364 -.049 1 13 slvr07a 1823 2023 201 8 0 .529 .72 2.53 .417 .872 .218 2.75 .355 -.024 1 14 slvr07b 1829 2023 195 7 0 .568 .38 3.01 .298 .822 .219 2.69 .354 -.044 1 15 slvr08a 1930 2023 94 3 2 .186 .51 1.42 .257 .706 .304 2.56 .379 -.037 2 16 slvr08b 1974 2023 50 1 0 .648 1.58 2.75 .593 .703 .215 2.53 .427 -.114 2 17 slvr09a 1955 2023 69 2 1 .580 1.44 3.05 .644 .758 .239 2.66 .480 -.057 1 18 slvr09b 1962 2023 62 2 0 .553 1.17 2.71 .538 .825 .226 2.72 .406 -.118 1 19 slvr10a 1879 2023 145 5 1 .441 .60 1.52 .315 .854 .231 2.67 .429 -.025 1 20 slvr10b 1889 2023 135 5 1 .534 .49 1.37 .253 .796 .242 2.75 .478 .104 1 21 slvr11a 1892 2023 132 5 1 .412 1.82 5.52 .995 .868 .195 2.63 .440 -.048 1 22 slvr11b 1892 2023 132 5 3 .360 1.82 4.60 .930 .892 .175 2.52 .436 .006 1 23 slvr12a 1932 2023 92 3 2 .326 1.56 3.02 .681 .780 .253 2.46 .371 -.035 2 24 slvr12b 1932 2023 92 3 0 .464 1.65 3.50 .713 .827 .219 2.48 .375 .018 1 25 slvr13a 1928 2023 96 3 0 .432 .85 2.58 .580 .796 .321 3.09 .449 -.038 3 26 slvr13b 1920 2023 104 4 1 .421 .47 1.31 .286 .821 .282 3.00 .507 .046 1 27 slvr14a 1919 2023 105 4 1 .434 1.21 3.35 .779 .890 .282 2.67 .446 -.041 2 28 slvr14b 1917 2023 107 4 0 .548 .88 2.70 .544 .907 .223 2.70 .461 .047 1 29 slvr15a 1944 2023 80 3 0 .489 .90 2.05 .432 .820 .249 2.57 .412 -.002 5 30 slvr15b 1941 2023 83 3 0 .464 .57 1.09 .251 .693 .286 2.67 .569 .002 1 31 slvr16a 1949 2023 75 3 0 .522 1.11 2.18 .514 .854 .229 2.50 .398 -.098 3 32 slvr16b 1946 2023 78 3 2 .371 .74 2.08 .385 .788 .266 2.99 .510 -.086 1 33 slvr17a 1852 2023 172 6 1 .465 .74 2.56 .462 .863 .240 2.39 .258 -.062 1 34 slvr17b 1801 2023 223 8 1 .473 .75 1.70 .343 .835 .192 2.67 .367 -.018 1 35 slvr18a 1818 2023 206 8 2 .463 .48 1.82 .389 .784 .311 2.88 .313 -.017 5 36 slvr18b 1829 2023 195 7 0 .535 .42 1.79 .283 .797 .239 2.79 .386 -.050 4 37 slvr19a 1928 2023 96 3 0 .489 .82 2.38 .530 .861 .269 2.71 .424 .018 2 38 slvr19b 1933 2023 91 3 0 .412 .83 2.24 .569 .866 .295 2.73 .415 -.030 2 39 slvr20a 1909 2023 115 4 0 .543 .54 1.75 .271 .737 .240 2.86 .457 -.118 1 40 slvr20b 1891 2023 133 5 1 .550 .52 1.07 .217 .689 .244 2.94 .471 -.074 1 41 slvr21a 1938 2023 86 3 0 .487 .87 1.62 .329 .778 .192 2.50 .424 -.072 1 42 slvr21b 1913 2023 111 4 0 .546 .57 1.37 .246 .790 .240 2.77 .491 -.009 1 43 slvr22a 1919 2023 105 4 0 .551 1.29 2.44 .483 .781 .193 2.73 .539 -.018 3 44 slvr22b 1931 2023 93 3 0 .587 .75 1.75 .292 .780 .222 2.76 .477 -.029 3 45 slvr23a 1921 2023 103 4 3 .356 .58 2.27 .450 .850 .298 2.87 .339 -.104 3 46 slvr23b 1920 2023 104 4 2 .493 .51 2.97 .486 .856 .349 3.12 .488 .034 1 47 slvr24a 1770 2023 254 10 0 .475 .39 1.10 .194 .816 .198 2.78 .332 .030 1 48 slvr24b 1749 2023 275 10 0 .533 .31 2.12 .263 .851 .232 2.91 .409 -.038 1 PART 7: DESCRIPTIVE STATISTICS: ak210 08:38 Fri 22 Mar 2024 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 () --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- 49 Slvr25a 1766 2023 258 10 0 .526 .96 2.76 .637 .957 .165 2.55 .289 -.051 1 50 Slvr25b 1806 2023 218 8 1 .400 .47 1.39 .233 .880 .184 2.62 .320 -.070 1 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 6635 241 30 .483 .75 5.52 .410 .825 .229 3.12 .411 -.037