Nutter's Ridge, Utah  - ut526 
Additional Information 
Steve Gray             

Purpose of Collection: Climatology - Snowpack reconstruction

Reference: 
Pederson, G.T., S.T. Gray, C.A. Woodhouse, J.L. Betancourt, D.B. Fagre, 
J.S. Littell, E. Watson, B.H. Luckman, and L.J. Graumlich. 2011. 
The unusual nature of recent snowpack declines in the North American Cordillera. 
Sciencexpress, Published online 9 June 2011. 
DOI: 10.1126/science.1201570

COFECHA output: 



      Chronology file name   : UT526.CRN
      Measurement file name  : UT526.RWL
      Date checked           : 07JUN11
      Checked by             : B. Bauer
      Beginning year         : 1040
      Ending year            : 2001
      Principal investigators: Steve Gray                               
      Site name              : Nutter's Ridge
      Site location          : Utah         
      Species information    : PIED PINYON
      Latitude               :   3949
      Longitude              : -11040
      Elevation              : 2235M

      Series intercorrelation: 0.791
      Avg mean sensitivity   : 0.413
      Avg standard deviation : 0.095
      Avg autocorrelation    : 0.571
      Number dated series    : 20
      Segment length tested  : 50

      Number problem segments: 0
      Pct problem segments   : 0.00



 PART 5:  CORRELATION OF SERIES BY SEGMENTS: Nutter's Ridge                                        16:54  Tue 07 Jun 2011  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   1050 1075 1100 1125 1150 1175 1200 1225 1250 1275 1300 1325 1350 1375 1400 1425 1450 1475 1500 1525

                         1099 1124 1149 1174 1199 1224 1249 1274 1299 1324 1349 1374 1399 1424 1449 1474 1499 1524 1549 1574

 --- -------- ---------  ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ----

   4 nrl430a  1062 1979   .63  .67  .67  .77  .83  .85  .82  .66  .67  .71  .71  .79  .90  .82  .77  .87  .90  .87  .65  .68

   7 nrl430b  1040 2001   .63  .67  .67  .77  .82  .77  .71  .84  .84  .68  .67  .89  .89  .85  .83  .86  .91  .88  .76  .81

   9 nrt071a  1516 2001                                                                                             .75  .78

  11 nrl016b  1309 1522                                                     .71  .80  .81  .81  .79  .74  .80  .84

  12 nrl428a  1229 1559                                      .67  .72  .68  .66  .78  .74  .78  .67  .62  .75  .72  .71  .69

  13 nrl017a  1226 1499                                      .77  .81  .74  .72  .84  .84  .82  .78  .70  .80

  16 nrl429a  1280 2001                                                .58  .58  .68  .78  .78  .71  .78  .88  .85  .74  .68

  17 nrl013a  1226 1624                                      .77  .75  .74  .72  .84  .91  .88  .85  .85  .77  .79  .82  .81

  19 nrl013b  1283 1625                                                .69  .65  .82  .91  .90  .81  .77  .86  .86  .67  .70

  20 nrl010b  1450 2001                                                                                   .75  .76  .70  .64

 Av segment correlation   .63  .67  .67  .77  .83  .81  .76  .74  .76  .69  .68  .81  .85  .83  .78  .77  .83  .82  .72  .72

 PART 5:  CORRELATION OF SERIES BY SEGMENTS: Nutter's Ridge                                        16:54  Tue 07 Jun 2011  Page   6

 -----------------------------------------------------------------------------------------------------------------------------------

 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   1550 1575 1600 1625 1650 1675 1700 1725 1750 1775 1800 1825 1850 1875 1900 1925 1950 1975

                         1599 1624 1649 1674 1699 1724 1749 1774 1799 1824 1849 1874 1899 1924 1949 1974 1999 2024

 --- -------- ---------  ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ----

   1 nrl018a  1578 2001        .80  .70  .70  .82  .88  .89  .91  .92  .91  .93  .90  .85  .84  .86  .86  .86  .87

   2 nrl018b  1603 2001             .69  .80  .85  .87  .90  .92  .91  .90  .92  .93  .90  .79  .77  .83  .76  .78

   3 nrl019a  1554 1898   .72  .76  .84  .80  .78  .87  .83  .79  .85  .87  .86  .79  .74

   4 nrl430a  1062 1979   .78  .67  .74  .74  .72  .70  .70  .80  .86  .81  .70  .68  .65  .63  .76  .66  .64

   5 nrl081x  1592 2001        .68  .69  .65  .75  .81  .78  .83  .90  .76  .71  .75  .64  .61  .75  .81  .73  .75

   6 nrl151a  1775 2000                                                .81  .75  .70  .69  .64  .61  .77  .70  .70

   7 nrl430b  1040 2001   .80  .74  .71  .65  .74  .69  .60  .73  .75  .78  .82  .82  .80  .75  .78  .80  .72  .73

   8 nrt006a  1642 2001                  .77  .83  .69  .67  .81  .85  .82  .71  .66  .78  .78  .79  .83  .76  .76

   9 nrt071a  1516 2001   .83  .74  .80  .82  .80  .72  .71  .82  .89  .92  .85  .83  .89  .75  .81  .88  .81  .82

  10 nrt002b  1576 2001        .75  .67  .67  .75  .80  .84  .87  .84  .77  .84  .89  .92  .85  .73  .84  .87  .87

  14 nrl005a  1590 1975        .67  .73  .72  .73  .69  .77  .85  .84  .74  .82  .85  .78  .75  .83  .89  .89

  15 nrl011a  1603 2001             .75  .77  .80  .88  .88  .90  .86  .81  .82  .83  .79  .65  .66  .78  .74  .75

  16 nrl429a  1280 2001   .70  .75  .87  .81  .68  .78  .83  .82  .87  .84  .84  .86  .82  .80  .75  .73  .75  .77

  17 nrl013a  1226 1624   .88  .85

  18 nrl006b  1565 2001   .60  .68  .75  .79  .83  .81  .82  .86  .86  .82  .65  .57  .68  .58  .74  .88  .75  .76

  19 nrl013b  1283 1625   .89  .85  .84

  20 nrl010b  1450 2001   .74  .80  .79  .82  .83  .81  .83  .87  .90  .92  .89  .89  .91  .85  .90  .93  .88  .89

 Av segment correlation   .77  .75  .75  .75  .78  .79  .79  .84  .86  .83  .81  .80  .79  .73  .77  .82  .77  .79

 PART 7:  DESCRIPTIVE STATISTICS: Nutter's Ridge                                                   16:54  Tue 07 Jun 2011  Page  13

 -----------------------------------------------------------------------------------------------------------------------------------



                                                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 nrl018a  1578 2001    424     17      0    .842    .24    .73   .103   .540   .346   2.57   .331  -.007   1

   2 nrl018b  1603 2001    399     16      0    .828    .21    .57   .082   .428   .352   2.59   .335  -.026   1

   3 nrl019a  1554 1898    345     13      0    .798    .31    .75   .121   .645   .298   2.49   .303   .010   1

   4 nrl430a  1062 1979    918     37      0    .746    .17    .47   .075   .495   .421   2.55   .307  -.022   1

   5 nrl081x  1592 2001    410     17      0    .737    .35    .80   .121   .620   .254   2.38   .319  -.037   1

   6 nrl151a  1775 2000    226      9      0    .705    .18    .40   .074   .509   .378   2.46   .269  -.018   1

   7 nrl430b  1040 2001    962     38      0    .793    .14    .39   .069   .513   .473   2.56   .340  -.020   1

   8 nrt006a  1642 2001    360     15      0    .763    .30    .78   .125   .491   .349   2.58   .371   .013   1

   9 nrt071a  1516 2001    486     20      0    .819    .14    .41   .066   .489   .445   2.58   .339  -.028   1

  10 nrt002b  1576 2001    426     17      0    .826    .18    .63   .095   .619   .422   2.46   .291  -.015   1

  11 nrl016b  1309 1522    214      8      0    .820    .21    .94   .157   .749   .544   2.47   .397  -.013   1

  12 nrl428a  1229 1559    331     13      0    .740    .11    .38   .067   .592   .566   2.39   .333  -.022   3

  13 nrl017a  1226 1499    274     10      0    .830    .17    .42   .081   .596   .415   2.43   .329  -.017   1

  14 nrl005a  1590 1975    386     16      0    .805    .17    .80   .120   .733   .485   2.61   .387   .010   1

  15 nrl011a  1603 2001    399     16      0    .803    .21    .75   .093   .742   .287   2.51   .329  -.021   1

  16 nrl429a  1280 2001    722     29      0    .772    .18    .57   .082   .614   .373   2.47   .278  -.007   1

  17 nrl013a  1226 1624    399     15      0    .829    .18    .50   .095   .544   .478   2.51   .334  -.010   1

  18 nrl006b  1565 2001    437     18      0    .741    .27    .76   .121   .601   .361   2.68   .436  -.001   1

  19 nrl013b  1283 1625    343     14      0    .818    .18    .75   .095   .632   .467   2.53   .326  -.004   1

  20 nrl010b  1450 2001    552     22      0    .841    .24    .76   .131   .523   .511   2.53   .340   .023   1

 --- -------- ---------  -----  -----  -----   ------ -----  -----  -----  -----  -----  -----  -----  -----  --

 Total or mean:           9013    360      0    .791    .20    .94   .095   .571   .413   2.68   .332  -.011

