Chronology file name : AK211.CRN Measurement file name : AK211.RWL Date checked : 29JUL24 Checked by : NOAA-Paleoclimatology Beginning year : 1841 Ending year : 2013 Principal investigators: McTague Stewart Hubbard Heinrich Site name : Northway Junction Site location : Alaska Species information : PCMA BLACK SPRUCE Latitude : 630 Longitude : 3-1415 Elevation : 550M Series intercorrelation: 0.571 Avg mean sensitivity : 0.226 Avg standard deviation : 0.680 Avg autocorrelation : 0.835 Number dated series : 53 Segment length tested : 50 Number problem segments: 5 Pct problem segments : 2.19 PART 5: CORRELATION OF SERIES BY SEGMENTS: ak211 13:28 Mon 29 Jul 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 1825 1850 1875 1900 1925 1950 1975 1874 1899 1924 1949 1974 1999 2024 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 NWJ01a 1879 2012 .59 .38 .53 .66 .58 2 NWJ01b 1917 2013 .59 .64 .66 .66 3 NWJ02a 1878 2013 .57 .55 .38 .46 .46 4 NWJ02b 1887 2013 .62 .60 .44 .46 .38 5 NWJ03a 1877 2013 .60 .55 .60 .67 .59 6 NWJ03b 1890 2013 .64 .52 .67 .69 .55 7 NWJ04a 1944 2013 .77 .81 .75 8 NWJ04b 1945 2013 .68 .74 .69 9 NWJ05a 1908 2013 .73 .73 .73 .71 10 NWJ05b 1904 2013 .69 .72 .77 .78 11 NWJ06a 1897 2013 .54 .63 .69 .77 .73 12 NWJ06b 1924 2013 .50 .48 .86 .81 13 NWJ07a 1918 2013 .74 .72 .69 .69 14 NWJ07b 1920 2013 .62 .58 .69 .65 15 NWJ08a 1865 2013 .57 .61 .66 .57 .44 .29A 16 NWJ08b 1892 2013 .58 .63 .59 .55 .44 17 NWJ10a 1964 2013 .45 18 NWJ10b 1964 2013 .35 19 NWJ11a 1913 2013 .57 .62 .57 .43 20 NWJ11b 1918 2013 .71 .71 .76 .64 21 NWJ12a 1879 2013 .61 .46 .37 .56 .43 22 NWJ12b 1903 2013 .40 .37 .57 .36 23 NWJ13b 1865 2013 .66 .67 .41 .35 .72 .65 24 NWJ14a 1939 2013 .74 .76 .76 25 NWJ14b 1940 2013 .66 .80 .77 26 NWJ15a 1869 2013 .35 .52 .65 .74 .79 .61 27 NWJ15b 1891 2013 .64 .73 .78 .80 .78 28 NWJ16a 1937 2013 .67 .69 .70 29 NWJ16b 1934 2013 .64 .69 .67 30 NWJ17a 1872 2013 .24B .34 .55 .38 .46 .50 31 NWJ17b 1850 2013 .27B .41 .37 .37 .44 .46 32 NWJ18a 1891 2013 .74 .67 .59 .50 .49 33 NWJ18b 1963 2013 .50 .54 34 NWJ19a 1876 2013 .42 .25B .44B .63 .62 35 NWJ19b 1883 2013 .54 .50 .55 .69 .67 36 NWJ21a 1854 2011 .52 .59 .61 .45 .41 .44 37 NWJ21b 1854 2013 .57 .61 .48 .45 .58 .55 38 NWJ22a 1909 2013 .57 .56 .64 .59 39 NWJ22b 1851 2013 .76 .74 .59 .70 .77 .70 40 NWJ23a 1917 2013 .59 .65 .72 .73 41 NWJ23b 1915 2013 .61 .66 .70 .66 42 NWJ24a 1903 2013 .56 .71 .77 .71 43 NWJ24b 1898 2013 .61 .63 .60 .66 .45 44 NWJ25a 1946 2013 .39 .61 .61 45 NWJ25b 1947 2013 .65 .68 .61 46 NWJ26a 1940 2013 .46 .53 .47 47 NWJ26b 1940 2013 .62 .66 .64 48 NWJ28a 1841 2013 .53 .57 .83 .68 .65 .63 .59 49 NWJ28b 1845 2013 .68 .72 .81 .65 .63 .77 .67 50 NWJ29a 1902 2013 .67 .70 .60 .58 51 NWJ29b 1894 2013 .66 .77 .79 .67 .51 52 NWJ30a 1938 2013 .60 .63 .64 53 NWJ30b 1934 2013 .62 .72 .71 Av segment correlation .61 .52 .60 .58 .59 .64 .60 PART 7: DESCRIPTIVE STATISTICS: ak211 13:28 Mon 29 Jul 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 NWJ01a 1879 2012 134 5 0 .578 1.40 3.90 .914 .932 .200 2.68 .421 -.038 2 2 NWJ01b 1917 2013 97 4 0 .640 1.18 2.87 .630 .913 .169 2.61 .438 -.024 2 3 NWJ02a 1878 2013 136 5 0 .499 1.25 3.90 .855 .859 .223 2.60 .374 -.062 1 4 NWJ02b 1887 2013 127 5 0 .526 1.33 3.07 .590 .761 .243 2.56 .399 -.107 1 5 NWJ03a 1877 2013 137 5 0 .604 1.39 4.01 .937 .879 .257 2.63 .436 -.057 1 6 NWJ03b 1890 2013 124 5 0 .597 1.24 3.07 .673 .839 .231 2.76 .351 -.104 1 7 NWJ04a 1944 2013 70 3 0 .704 1.34 2.84 .666 .726 .296 2.87 .608 .047 1 8 NWJ04b 1945 2013 69 3 0 .647 1.07 3.12 .641 .777 .298 2.93 .594 .085 1 9 NWJ05a 1908 2013 106 4 0 .726 1.92 5.07 1.207 .827 .292 2.62 .612 -.085 1 10 NWJ05b 1904 2013 110 4 0 .747 1.82 5.30 1.206 .885 .257 2.52 .391 -.058 1 11 NWJ06a 1897 2013 117 5 0 .664 1.41 3.99 .773 .866 .264 2.82 .480 -.056 1 12 NWJ06b 1924 2013 90 4 0 .618 1.24 3.19 .787 .900 .277 2.55 .452 -.067 1 13 NWJ07a 1918 2013 96 4 0 .683 2.25 3.94 .665 .674 .179 2.52 .448 -.044 1 14 NWJ07b 1920 2013 94 4 0 .617 1.81 4.07 .690 .754 .196 2.64 .425 -.041 1 15 NWJ08a 1865 2013 149 6 1 .494 1.16 3.75 .876 .914 .247 2.67 .339 -.075 1 16 NWJ08b 1892 2013 122 5 0 .533 1.38 3.91 .908 .907 .212 2.66 .500 -.010 1 17 NWJ10a 1964 2013 50 1 0 .451 2.74 4.42 .897 .617 .256 2.43 .431 .002 1 18 NWJ10b 1964 2013 50 1 0 .350 2.09 4.17 .957 .712 .289 2.58 .594 .068 1 19 NWJ11a 1913 2013 101 4 0 .484 1.78 2.85 .562 .766 .173 2.37 .321 -.097 2 20 NWJ11b 1918 2013 96 4 0 .652 1.52 3.14 .681 .853 .195 2.66 .498 -.006 1 21 NWJ12a 1879 2013 135 5 0 .497 1.09 2.51 .500 .830 .212 2.46 .346 -.086 1 22 NWJ12b 1903 2013 111 4 0 .399 1.12 3.36 .666 .878 .184 2.82 .457 -.032 2 23 NWJ13b 1865 2013 149 6 0 .550 .79 2.65 .520 .873 .223 2.70 .415 .011 2 24 NWJ14a 1939 2013 75 3 0 .730 1.75 5.92 1.271 .923 .244 2.49 .384 -.015 2 25 NWJ14b 1940 2013 74 3 0 .684 1.55 4.34 1.154 .939 .191 2.58 .485 -.058 2 26 NWJ15a 1869 2013 145 6 0 .533 .70 2.06 .385 .783 .276 2.74 .398 .006 1 27 NWJ15b 1891 2013 123 5 0 .723 .54 1.14 .256 .769 .279 2.50 .431 -.036 1 28 NWJ16a 1937 2013 77 3 0 .656 1.35 4.11 .836 .916 .222 2.65 .416 -.010 1 29 NWJ16b 1934 2013 80 3 0 .598 1.33 3.64 .876 .915 .223 2.60 .561 -.006 1 30 NWJ17a 1872 2013 142 6 1 .363 .70 2.53 .599 .940 .243 2.64 .388 -.026 1 31 NWJ17b 1850 2013 164 6 1 .342 .68 3.55 .605 .924 .221 2.89 .493 -.039 1 32 NWJ18a 1891 2013 123 5 0 .602 1.54 3.77 .895 .893 .234 2.42 .317 .001 1 33 NWJ18b 1963 2013 51 2 0 .501 1.64 3.21 .773 .896 .160 2.65 .600 .004 1 34 NWJ19a 1876 2013 138 5 2 .486 .62 1.16 .266 .818 .218 2.48 .355 .030 3 35 NWJ19b 1883 2013 131 5 0 .596 .77 2.17 .576 .927 .213 2.44 .320 -.038 1 36 NWJ21a 1854 2011 158 6 0 .470 1.06 2.01 .382 .832 .163 2.69 .486 -.063 1 37 NWJ21b 1854 2013 160 6 0 .515 .96 1.57 .241 .537 .193 2.56 .405 .004 1 38 NWJ22a 1909 2013 105 4 0 .568 1.00 2.33 .519 .826 .278 2.52 .386 -.058 1 39 NWJ22b 1851 2013 163 6 0 .684 1.10 2.32 .452 .816 .209 2.71 .417 -.018 2 40 NWJ23a 1917 2013 97 4 0 .659 1.50 4.68 1.100 .899 .258 2.70 .467 .033 1 41 NWJ23b 1915 2013 99 4 0 .642 1.35 3.87 .868 .881 .274 2.59 .521 -.030 2 42 NWJ24a 1903 2013 111 4 0 .648 1.29 3.66 .724 .756 .298 2.77 .551 .028 1 43 NWJ24b 1898 2013 116 5 0 .514 1.35 4.89 .727 .714 .296 2.58 .350 .001 1 44 NWJ25a 1946 2013 68 3 0 .456 1.06 2.04 .392 .652 .225 2.52 .433 -.087 1 45 NWJ25b 1947 2013 67 3 0 .624 1.10 2.17 .514 .810 .217 2.62 .518 .036 1 46 NWJ26a 1940 2013 74 3 0 .406 1.29 3.90 .862 .959 .169 2.68 .551 -.047 1 47 NWJ26b 1940 2013 74 3 0 .550 1.19 3.37 .751 .952 .171 2.67 .607 -.087 1 48 NWJ28a 1841 2013 173 7 0 .577 1.13 1.95 .362 .776 .172 2.53 .395 -.056 1 PART 7: DESCRIPTIVE STATISTICS: ak211 13:28 Mon 29 Jul 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 NWJ28b 1845 2013 169 7 0 .665 1.05 1.90 .337 .782 .167 2.59 .465 -.012 1 50 NWJ29a 1902 2013 112 4 0 .609 1.15 2.66 .465 .859 .188 2.76 .416 .053 1 51 NWJ29b 1894 2013 120 5 0 .580 1.23 3.09 .658 .878 .225 2.79 .440 -.070 1 52 NWJ30a 1938 2013 76 3 0 .577 1.79 5.27 1.269 .900 .235 2.68 .420 -.095 1 53 NWJ30b 1934 2013 80 3 0 .609 1.46 5.49 1.154 .807 .234 2.67 .424 -.042 2 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 5815 228 5 .571 1.24 5.92 .680 .835 .226 2.93 .436 -.032