Juneau Mountain, Alaska - ak130
Additional Site Information
Greg Wiles Stephanie Jarvis Rosanne D'Arrigo
Purpose of Collection:
Climatology - temperature analyses
Detrending:
Negative exponential or linear regression of any slope
Cores Stored at:
Wooster Tree Ring Lab
Department of Geology
The College of Wooster
Reference:
Jarvis, S.K., Wiles, G.C., Appleton, S.N., D'Arrigo, R.D. and Lawson, D.E. 2013.
A warming-induced biome shift detected in tree growth of Mountain Hemlock
(Tsuga mertensiana (Bong.) Carriere) along the Gulf of Alaska.
Arctic, Antarctic and Alpine Research, Vol. 45, No. 2, pp. 211-218.
DOI: 10.1657/1938-4246-45.211.
COFECHA output:
Chronology file name : AK130.CRN
Measurement file name : AK130.RWL
Date checked : 22MAY13
Checked by : B. Bauer
Beginning year : 1557
Ending year : 1999
Principal investigators: Greg Wiles Stephanie Jarvis Rosanne D'Arrigo
Site name : Juneau Mountain
Site location : Alaska
Species information : TSME MOUNTAIN HEMLOCK
Latitude : 5818
Longitude : -13423
Elevation : 540M
Series intercorrelation: 0.614
Avg mean sensitivity : 0.275
Avg standard deviation : 0.263
Avg autocorrelation : 0.778
Number dated series : 18
Segment length tested : 50
Number problem segments: 6
Pct problem segments : 3.53
PART 5: CORRELATION OF SERIES BY SEGMENTS: Juneau Mountain 09:23 Wed 22 May 2013 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 1575 1600 1625 1650 1675 1700 1725 1750 1775 1800 1825 1850 1875 1900 1925 1950
1624 1649 1674 1699 1724 1749 1774 1799 1824 1849 1874 1899 1924 1949 1974 1999
--- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ----
1 JM01b 1827 1998 .55 .60 .59 .47 .45B .44
2 JM01a 1916 1999 .58 .70 .75
3 JM02N 1818 1991 .59 .57 .55 .66 .71 .78 .81
4 JM02S 1557 1999 .63 .63 .64 .84 .79 .67 .73 .71 .69 .74 .70 .67 .70 .78 .69 .58
5 JM03N 1605 1999 .87 .80 .81 .86 .78 .73 .78 .78 .70 .70 .71 .73 .84 .75 .54
6 JM03S 1587 1997 .66 .72 .79 .82 .84 .56 .51 .75 .60 .62 .76 .72 .69 .62 .54 .33
7 JM04S 1586 1998 .69 .70 .65 .50 .56 .57 .47 .50 .42 .46 .62 .76 .75 .70 .59 .56
8 JM04N 1598 1999 .79 .81 .82 .74 .73 .56 .44 .40 .34B .53 .63 .61 .66 .65 .69 .64
9 JM05N 1885 1994 .67 .73 .74 .73
10 JM06NW 1849 1999 .49 .45 .50 .61 .62 .75
11 JM06S 1813 1999 .56 .60 .62 .59 .59 .57 .57
12 JM06N 1600 1949 .38B .47B .51 .57 .69 .75 .73 .64 .68 .61 .51 .57 .69
13 JM07N 1807 1999 .34 .42 .58 .50 .51 .70 .82
14 JM09S 1845 1999 .69 .67 .67 .47 .62 .76
15 JM09N 1778 1999 .26A .37 .42 .59 .63 .63 .66 .60
16 JM10N 1771 1999 .77 .77 .68 .73 .63 .51 .64 .75 .75
17 JM11N 1780 1999 .37 .51 .34 .30B .62 .54 .61 .62
18 JM12N 1800 1992 .55 .47 .46 .53 .54 .63 .69
Av segment correlation .69 .69 .70 .70 .73 .64 .60 .66 .54 .56 .58 .59 .62 .63 .65 .64
PART 7: DESCRIPTIVE STATISTICS: Juneau Mountain 09:23 Wed 22 May 2013 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 ()
--- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- --
1 JM01b 1827 1998 172 6 1 .490 .44 1.03 .202 .833 .240 2.52 .361 -.026 2
2 JM01a 1916 1999 84 3 0 .612 .48 .87 .201 .652 .276 2.68 .564 .032 1
3 JM02N 1818 1991 174 7 0 .670 .46 1.55 .228 .744 .235 2.95 .452 -.031 2
4 JM02S 1557 1999 443 16 0 .688 .38 1.72 .239 .819 .282 2.86 .388 -.023 1
5 JM03N 1605 1999 395 15 0 .747 .36 1.48 .235 .854 .281 2.58 .382 -.021 1
6 JM03S 1587 1997 411 16 0 .652 .40 1.33 .208 .768 .272 2.65 .338 -.001 1
7 JM04S 1586 1998 413 16 0 .581 .43 2.49 .318 .776 .296 2.95 .293 -.030 3
8 JM04N 1598 1999 402 16 1 .590 .30 .98 .187 .803 .312 2.66 .336 -.044 1
9 JM05N 1885 1994 110 4 0 .703 .87 2.26 .373 .712 .245 2.67 .434 -.009 1
10 JM06NW 1849 1999 151 6 0 .601 .92 2.08 .462 .794 .290 2.54 .383 -.006 1
11 JM06S 1813 1999 187 7 0 .579 .70 1.66 .255 .703 .230 2.53 .358 -.026 1
12 JM06N 1600 1949 350 13 2 .578 .46 1.55 .276 .836 .266 2.74 .300 .003 1
13 JM07N 1807 1999 193 7 0 .579 .77 1.99 .343 .771 .259 2.66 .427 -.014 1
14 JM09S 1845 1999 155 6 0 .637 .74 2.02 .381 .843 .244 2.61 .419 -.010 2
15 JM09N 1778 1999 222 8 1 .506 .44 1.82 .347 .873 .331 2.55 .350 -.017 2
16 JM10N 1771 1999 229 9 0 .688 .30 .73 .103 .551 .271 2.83 .450 -.055 2
17 JM11N 1780 1999 220 8 1 .461 .62 1.73 .359 .788 .282 2.85 .509 .050 1
18 JM12N 1800 1992 193 7 0 .560 .63 1.43 .220 .639 .236 2.79 .516 .030 2
--- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- --
Total or mean: 4504 170 6 .614 .48 2.49 .263 .778 .275 2.95 .383 -.015