Sunset Crater Visitor Center, Arizona - az564 Additional Site Information Paul R. Sheppard Purpose of Collection: Climatology - precipitation analyses Cores are stored at: Laboratory of Tree-Ring Research, University of Arizona, Tucson, Arizona Reference: Sheppard, P.R., E.M. May, M.H. Ort, K.C. Anderson, and M.D. Elson. 2005. Dendrochronological responses to the 24 October 1992 tornado at Sunset Crater, northern Arizona. Canadian Journal of Forest Research 35:2911-2919. NOTES: This collection updates nearby Ponderosa collections from Slate Mt., Robinson Mt., and Gus Pearson. The chronology shows a decline in growth since the early 1990s, including zero growth in ponderosa pine for the year 2002. COFECHA output: Chronology file name : AZ564.CRN Measurement file name : AZ564.RWL Date checked : 07MAY08 Checked by : B. Bauer Beginning year : 1931 Ending year : 2003 Principal investigators: Paul R. Sheppard Site name : Sunset Crater Visitor Center Site location : Arizona Species information : PIPO PONDEROSA PINE Latitude : 3514 Longitude : -11134 Elevation : 2000M Series intercorrelation: 0.784 Avg mean sensitivity : 0.423 Avg standard deviation : 1.857 Avg autocorrelation : 0.831 Number dated series : 8 Segment length tested : 50 Number problem segments: 0 Pct problem segments : 0.00 PART 5: CORRELATION OF SERIES BY SEGMENTS: Sunset Crater Visitor Center 12:17 Wed 07 May 2008 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 1925 1950 1975 1974 1999 2024 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 SUN21 1946 2003 .90 .91 .86 2 SUN22 1939 2003 .88 .88 .85 3 SUN23 1953 2003 .81 .80 4 SUN24 1938 2003 .85 .84 .81 5 SUN25 1933 2003 .76 .82 .74 6 SUN26 1933 2003 .55 .70 .68 7 SUN27 1931 2003 .76 .84 .79 8 SUN28 1937 2003 .83 .88 .84 Av segment correlation .79 .83 .79 PART 7: DESCRIPTIVE STATISTICS: Sunset Crater Visitor Center 12:17 Wed 07 May 2008 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 SUN21 1946 2003 58 3 0 .888 2.37 6.35 1.642 .753 .535 2.40 .446 -.070 1 2 SUN22 1939 2003 65 3 0 .879 2.70 7.07 1.904 .862 .409 2.43 .443 -.042 2 3 SUN23 1953 2003 51 2 0 .758 2.35 10.12 2.429 .925 .518 2.61 .651 -.079 1 4 SUN24 1938 2003 66 3 0 .838 2.42 6.41 1.660 .857 .393 2.43 .486 -.047 2 5 SUN25 1933 2003 71 3 0 .755 2.98 8.24 1.589 .813 .329 2.40 .398 -.052 1 6 SUN26 1933 2003 71 3 0 .591 3.45 10.66 2.527 .818 .425 2.54 .422 -.070 1 7 SUN27 1931 2003 73 3 0 .766 2.39 8.36 2.014 .910 .432 2.52 .500 -.080 2 8 SUN28 1937 2003 67 3 0 .825 2.48 5.16 1.162 .714 .389 2.47 .514 -.054 1 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 522 23 0 .784 2.66 10.66 1.857 .831 .423 2.61 .477 -.061