Malcolm's Ridge, Arkansas - AR058
Additional Site Information
M.K. Cleaveland D.W. Stahle M.D. Therrell
Purpose of Collection: Climatology
Measurement type: Total ring width
1st Detrending method: Negative exponential; if cannot be fitted, then
fit a regression line of any slope.
2nd Detrending method: If exp. is fitted, then a cubic spline with half
power cutoff equal to series length is fitted; if the exp. cannot be
fitted and a regression line is, then a spline with half power cutoff
equal to 67% of the series length is fitted; In no case is a spline
with half power cutoff less than 100 years fitted.
Location of core material:
Stored in U. of Arkansas Tree-Ring Lab; Part of the U. of Arkansas
Museum collections, Accession No. 83-194.
COFECHA output:
Chronology file name : AR058.CRN
Measurement file name : AR058.RWL
Date checked : 10MAR05
Checked by : H. ADAMS AND J. LUKAS
Beginning year : 1679
Ending year : 1992
Principal investigators: M.K. Cleaveland D.W. Stahle M.D. Therrell
Site name : Malcolm's Ridge
Site location : Arkansas
Species information : QUST POST OAK
Latitude : 3606
Longitude : -09408
Elevation : 440M
Series intercorrelation: 0.621
Avg mean sensitivity : 0.254
Avg standard deviation : 0.315
Avg autocorrelation : 0.640
Number dated series : 49
Segment length tested : 50
Number problem segments: 14
Pct problem segments : 3.81
PART 5: CORRELATION OF SERIES BY SEGMENTS: ar058.rwl 14:07 Thu 10 Mar 2005 Page 5
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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 1675 1700 1725 1750 1775 1800 1825 1850 1875 1900 1925 1950
1724 1749 1774 1799 1824 1849 1874 1899 1924 1949 1974 1999
--- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ----
1 MKC01A 1788 1991 .68 .70 .78 .81 .72 .73 .66 .74
2 MKC01B 1800 1991 .45 .63 .80 .69 .72 .71 .77
3 MKC02A 1715 1930 .65 .72 .65 .66 .65 .55 .59 .59 .44
4 MKC02B 1715 1820 .41 .64 .66 .52
5 MKC04A 1711 1991 .50 .55 .67 .74 .70 .76 .81 .83 .81 .77 .75
6 MKC04B 1720 1991 .57 .57 .77 .62 .59 .70 .78 .86 .76 .69 .70
7 MKC06A 1742 1950 .60 .63 .51 .60 .81 .77 .66 .66 .66
8 MKC06B 1742 1950 .47 .48 .44 .66 .34B .23B .66 .55 .54
9 MKC07A 1839 1991 .72 .70 .69 .64 .68 .70
10 MKC07B 1839 1991 .57 .60 .77 .69 .60 .65
11 MKC09A 1691 1920 .70 .70 .71 .63 .43 .49 .62 .52 .41
12 MKC09B 1700 1800 .74 .68 .69 .71
13 MKC10A 1877 1991 .45 .59 .68 .74
14 MKC10B 1877 1991 .54 .54 .70 .82
15 MKC11A 1683 1988 .59 .62 .60 .61 .46 .57 .78 .68 .41 .33 .44 .48
16 MKC11B 1683 1988 .57 .55 .64 .55 .58 .57 .57 .59 .40 .22B .31A .48
17 MKC11C 1684 1988 .73 .73 .78 .51 .49 .75 .80 .71 .33A .19B .36 .31A
18 MKC13A 1780 1991 .69 .74 .71 .64 .62 .22B .20B .60
19 MKC14A 1743 1991 .55 .67 .56 .48 .55 .73 .86 .82 .69 .65
20 MKC14B 1743 1991 .49 .53 .61 .61 .63 .75 .89 .85 .68 .71
21 MKC15A 1813 1991 .63 .65 .73 .85 .75 .63 .70
22 MKC15B 1840 1991 .61 .63 .66 .65 .56 .60
23 MKC16A 1750 1991 .72 .68 .70 .63 .55 .44 .47 .59 .53
24 MKC16B 1730 1991 .45 .76 .70 .64 .61 .63 .68 .58 .39 .42
25 MKC17A 1766 1991 .81 .78 .80 .73 .70 .58 .48 .55 .74
26 MKC17B 1770 1991 .76 .72 .80 .84 .81 .74 .61 .61 .68
27 MKC18A 1760 1991 .69 .45 .37 .62 .65 .50 .54 .65 .71
28 MKC18B 1760 1860 .64 .45 .54 .61
29 MKC19A 1881 1991 .53 .50 .68 .41
30 MKC19B 1857 1991 .43 .53 .57 .68 .77
31 MKC28A 1721 1991 .61 .63 .69 .72 .64 .56 .57 .60 .59 .54 .59
32 MKC28B 1753 1991 .90 .80 .77 .48 .26A .52 .69 .60 .56
33 MKC29B 1756 1991 .82 .77 .68 .81 .87 .69 .58 .65 .73
34 MKC33A 1875 1991 .69 .78 .77 .75
35 MKC33B 1879 1991 .76 .79 .72 .76
36 MKC34A 1872 1991 .59 .58 .74 .78 .78
37 MKC34B 1874 1991 .76 .75 .83 .79 .82
38 MKC35A 1737 1991 .54 .59 .59 .57 .35B .41 .75 .57 .31A .41
39 MKC36A 1859 1991 .69 .76 .73 .74 .75
40 MKC36B 1847 1991 .74 .73 .77 .73 .72 .70
41 MKC40A 1820 1991 .36 .42 .66 .69 .69 .69 .72
42 MKC42A 1845 1992 .84 .85 .88 .86 .78 .77
43 MKC42B 1793 1992 .51 .51 .50 .53 .86 .76 .57 .60
44 MKC49B 1697 1991 .50 .52 .60 .63 .42 .29A .44 .54 .57 .72 .72 .63
45 MKC55A 1831 1991 .45 .42 .38 .39 .54 .51
46 MKC55B 1856 1991 .60 .54 .47 .46 .51
47 MKC56A 1679 1991 .53 .68 .63 .50 .40 .39 .45 .55 .41 .30B .46 .71
48 MKC64A 1908 1992 .66 .66 .79
49 MKC64B 1908 1992 .61 .55 .62
Av segment correlation .61 .61 .60 .66 .60 .60 .62 .64 .64 .61 .61 .65
PART 7: DESCRIPTIVE STATISTICS: ar058.rwl 14:07 Thu 10 Mar 2005 Page 7
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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 MKC01A 1788 1991 204 8 0 .736 .81 1.87 .321 .546 .299 2.62 .417 -.009 1
2 MKC01B 1800 1991 192 7 0 .673 .65 1.66 .260 .512 .288 2.84 .544 .024 1
3 MKC02A 1715 1930 216 9 0 .580 .71 1.51 .244 .637 .226 2.76 .476 -.011 2
4 MKC02B 1715 1820 106 4 0 .517 .67 1.67 .252 .455 .287 2.71 .454 .063 3
5 MKC04A 1711 1991 281 11 0 .728 .76 1.74 .274 .518 .271 2.66 .398 -.028 2
6 MKC04B 1720 1991 272 11 0 .690 .74 2.18 .272 .476 .287 2.77 .500 -.032 1
7 MKC06A 1742 1950 209 9 0 .670 .51 1.52 .226 .741 .252 2.64 .416 -.036 2
8 MKC06B 1742 1950 209 9 2 .487 .47 1.36 .189 .589 .289 2.65 .436 -.047 1
9 MKC07A 1839 1991 153 6 0 .689 .92 2.58 .400 .582 .276 2.84 .549 -.041 1
10 MKC07B 1839 1991 153 6 0 .636 .88 2.22 .396 .636 .280 2.75 .451 -.016 1
11 MKC09A 1691 1920 230 9 0 .541 .60 1.89 .273 .643 .311 2.70 .381 -.041 1
12 MKC09B 1700 1800 101 4 0 .724 .53 1.19 .220 .375 .341 2.81 .447 -.023 1
13 MKC10A 1877 1991 115 4 0 .633 .94 2.76 .484 .653 .340 2.77 .502 -.050 2
14 MKC10B 1877 1991 115 4 0 .664 .92 2.43 .521 .727 .330 2.68 .452 -.081 1
15 MKC11A 1683 1988 306 12 0 .553 .69 1.59 .237 .658 .215 2.64 .360 -.046 1
16 MKC11B 1683 1988 306 12 2 .508 .61 1.95 .244 .711 .224 2.68 .446 -.048 2
17 MKC11C 1684 1988 305 12 3 .543 .73 1.36 .215 .636 .202 2.70 .386 -.027 1
18 MKC13A 1780 1991 212 8 2 .583 .62 1.59 .273 .701 .248 2.87 .545 .007 1
19 MKC14A 1743 1991 249 10 0 .636 .65 1.77 .327 .768 .274 2.74 .376 -.003 1
20 MKC14B 1743 1991 249 10 0 .687 .78 1.99 .410 .790 .288 2.73 .365 -.007 1
21 MKC15A 1813 1991 179 7 0 .712 .62 1.44 .259 .497 .319 2.66 .415 -.010 1
22 MKC15B 1840 1991 152 6 0 .613 .64 2.26 .337 .712 .281 2.62 .352 -.058 1
23 MKC16A 1750 1991 242 9 0 .582 .71 1.50 .226 .592 .205 2.76 .433 -.017 1
24 MKC16B 1730 1991 262 10 0 .562 .77 2.48 .293 .534 .241 2.74 .429 .007 1
25 MKC17A 1766 1991 226 9 0 .685 .75 1.74 .239 .525 .232 2.74 .479 -.027 1
26 MKC17B 1770 1991 222 9 0 .726 .81 1.95 .308 .621 .238 2.53 .298 .023 1
27 MKC18A 1760 1991 232 9 0 .596 .60 1.34 .230 .684 .243 2.61 .339 -.011 1
28 MKC18B 1760 1860 101 4 0 .628 .62 1.83 .378 .836 .255 2.78 .432 .049 1
29 MKC19A 1881 1991 111 4 0 .480 .93 1.83 .293 .658 .201 2.70 .432 -.021 1
30 MKC19B 1857 1991 135 5 0 .649 1.04 2.11 .355 .747 .199 2.55 .425 -.024 1
31 MKC28A 1721 1991 271 11 0 .603 .67 1.69 .199 .705 .170 2.57 .390 -.021 2
32 MKC28B 1753 1991 239 9 1 .590 .66 1.80 .280 .793 .180 2.75 .332 -.025 1
33 MKC29B 1756 1991 236 9 0 .743 .79 1.99 .343 .714 .274 2.85 .463 -.035 1
34 MKC33A 1875 1991 117 4 0 .745 1.31 3.17 .550 .575 .277 2.84 .447 .016 2
35 MKC33B 1879 1991 113 4 0 .764 1.10 2.46 .428 .517 .299 2.84 .510 .022 2
36 MKC34A 1872 1991 120 5 0 .716 1.52 3.60 .638 .706 .241 2.69 .520 -.025 1
37 MKC34B 1874 1991 118 5 0 .793 1.49 3.06 .552 .561 .295 2.71 .494 .019 1
38 MKC35A 1737 1991 255 10 2 .497 .57 3.27 .333 .767 .239 2.76 .422 -.033 2
39 MKC36A 1859 1991 133 5 0 .730 1.42 3.34 .485 .495 .261 2.80 .499 -.003 1
40 MKC36B 1847 1991 145 6 0 .723 1.03 2.35 .393 .594 .256 2.70 .471 -.006 1
41 MKC40A 1820 1991 172 7 0 .621 .58 1.28 .176 .526 .217 2.67 .367 .000 3
42 MKC42A 1845 1992 148 6 0 .812 .90 1.91 .285 .458 .244 2.65 .357 .035 1
43 MKC42B 1793 1992 200 8 0 .598 .74 1.73 .377 .722 .314 2.78 .512 -.015 1
44 MKC49B 1697 1991 295 12 1 .541 .55 1.34 .259 .769 .261 2.72 .407 -.039 1
45 MKC55A 1831 1991 161 6 0 .463 1.07 2.63 .473 .799 .205 2.82 .473 -.018 1
46 MKC55B 1856 1991 136 5 0 .505 1.14 4.45 .671 .752 .268 2.84 .460 -.021 2
47 MKC56A 1679 1991 313 12 1 .486 .72 1.87 .289 .709 .228 2.64 .354 -.015 1
48 MKC64A 1908 1992 85 3 0 .708 1.38 2.62 .464 .327 .286 2.82 .639 .038 1
PART 7: DESCRIPTIVE STATISTICS: ar058.rwl 14:07 Thu 10 Mar 2005 Page 8
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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 MKC64B 1908 1992 85 3 0 .598 1.52 2.64 .507 .541 .257 2.61 .569 .042 5
--- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- --
Total or mean: 9387 367 14 .621 .78 4.45 .315 .640 .254 2.87 .429 -.017