Clarks Fork Yellowstone NW, Wyoming  - wy039
Additional Information 
Greg Pederson  Kali Abel            

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   : WY039.CRN
      Measurement file name  : WY039.RWL
      Date checked           : 07JUN11
      Checked by             : B. Bauer
      Beginning year         : 1447
      Ending year            : 2007
      Principal investigators: Greg Pederson  Kali Abel                       
      Site name              : Clarks Fork Yellowstone NW
      Site location          : Wyoming      
      Species information    : PSME DOUGLAS-FIR
      Latitude               :   4456
      Longitude              : -10939
      Elevation              : 2591M

      Series intercorrelation: 0.660
      Avg mean sensitivity   : 0.224
      Avg standard deviation : 0.379
      Avg autocorrelation    : 0.742
      Number dated series    : 28
      Segment length tested  : 50

      Number problem segments: 3
      Pct problem segments   : 0.82



 PART 5:  CORRELATION OF SERIES BY SEGMENTS: Clarks Fork Yellowstone NW                            16:57  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   1450 1475 1500 1525 1550 1575 1600 1625 1650 1675 1700 1725 1750 1775 1800 1825 1850 1875 1900 1925

                         1499 1524 1549 1574 1599 1624 1649 1674 1699 1724 1749 1774 1799 1824 1849 1874 1899 1924 1949 1974

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

   1 CFY03a   1862 2007                                                                                   .17B .39  .55  .54

   2 CFY04a   1785 2007                                                                    .63  .64  .71  .70  .62  .62  .69

   3 CFY04b   1742 2007                                                          .44  .51  .58  .70  .72  .61  .62  .67  .65

   4 CFY05a   1609 2007                                 .64  .71  .58  .60  .63  .67  .71  .57  .65  .66  .50  .63  .78  .81

   5 CFY05b   1610 2007                                 .72  .69  .58  .66  .68  .63  .63  .55  .70  .71  .45  .53  .79  .79

   6 CFY06a   1757 2007                                                               .71  .64  .65  .67  .52  .66  .76  .68

   7 CFY07a   1755 2007                                                               .46  .45  .34  .62  .68  .77  .74  .73

   8 CFY08a   1760 2007                                                               .51  .49  .48  .66  .46  .50  .64  .57

   9 CFY09a   1477 2007        .86  .83  .83  .87  .82  .79  .78  .80  .80  .80  .83  .89  .82  .74  .63  .64  .77  .83  .78

  10 CFY09b   1447 2007   .87  .87  .86  .84  .87  .79  .76  .76  .72  .78  .78  .77  .79  .77  .76  .74  .73  .79  .87  .63

  11 CFY10a   1648 2007                                      .65  .67  .76  .75  .67  .75  .73  .70  .74  .75  .80  .86  .84

  12 CFY10b   1628 2007                                      .49  .79  .79  .73  .68  .75  .68  .71  .81  .78  .77  .79  .80

  13 CFY12a   1626 2007                                      .69  .64  .79  .80  .76  .71  .64  .72  .78  .68  .45  .41  .60

  14 CFY12b   1625 2007                                      .67  .66  .78  .78  .77  .76  .66  .71  .76  .71  .63  .65  .69

  15 CFY13a   1735 2007                                                          .83  .82  .63  .64  .80  .79  .67  .73  .86

  16 CFY13b   1684 2007                                                .72  .74  .83  .83  .70  .65  .71  .70  .77  .89  .87

  17 CFY13c   1890 2007                                                                                        .85  .85  .80

  18 CFY14a   1767 2007                                                               .55  .61  .56  .62  .70  .78  .77  .68

  19 CFY14b   1769 2007                                                               .49  .57  .53  .60  .60  .70  .67  .50

  20 CFY15a   1706 2007                                                     .56  .68  .81  .75  .59  .60  .66  .75  .73  .65

  21 CFY15b   1787 2007                                                                    .64  .67  .75  .73  .70  .68  .74

  22 CFY16a   1745 2007                                                          .47  .45  .53  .62  .71  .69  .65  .82  .83

  23 CFY17a   1645 2007                                      .65  .68  .81  .80  .77  .81  .54  .49  .71  .70  .82  .91  .91

  24 CFY17b   1636 2007                                      .63  .76  .82  .80  .73  .72  .44  .33  .55  .68  .76  .83  .83

  25 CFY19a   1473 2007   .71  .70  .67  .63  .70  .78  .81  .76  .75  .81  .73  .64  .61  .54  .55  .58  .62  .66  .66  .64

  26 CFY19b   1507 2007             .61  .61  .70  .72  .69  .63  .44  .48  .47  .41  .46  .42  .50  .61  .55  .42  .45  .47

  27 CFY20a   1724 2007                                                     .52  .52  .78  .82  .82  .81  .70  .71  .78  .73

  28 CFY20b   1743 2007                                                          .74  .81  .77  .69  .80  .69  .74  .82  .72

 Av segment correlation   .79  .81  .74  .73  .78  .78  .74  .68  .67  .74  .71  .68  .68  .62  .62  .69  .64  .67  .73  .72

 PART 5:  CORRELATION OF SERIES BY SEGMENTS: Clarks Fork Yellowstone NW                            16:57  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   1950 1975

                         1999 2024

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

   1 CFY03a   1862 2007   .47  .49

   2 CFY04a   1785 2007   .78  .80

   3 CFY04b   1742 2007   .66  .68

   4 CFY05a   1609 2007   .71  .69

   5 CFY05b   1610 2007   .68  .62

   6 CFY06a   1757 2007   .59  .47

   7 CFY07a   1755 2007   .72  .66

   8 CFY08a   1760 2007   .62  .58

   9 CFY09a   1477 2007   .80  .73

  10 CFY09b   1447 2007   .47  .44

  11 CFY10a   1648 2007   .84  .82

  12 CFY10b   1628 2007   .84  .85

  13 CFY12a   1626 2007   .72  .77

  14 CFY12b   1625 2007   .77  .83

  15 CFY13a   1735 2007   .79  .74

  16 CFY13b   1684 2007   .72  .62

  17 CFY13c   1890 2007   .72  .64

  18 CFY14a   1767 2007   .66  .77

  19 CFY14b   1769 2007   .63  .67

  20 CFY15a   1706 2007   .69  .70

  21 CFY15b   1787 2007   .84  .79

  22 CFY16a   1745 2007   .80  .75

  23 CFY17a   1645 2007   .86  .84

  24 CFY17b   1636 2007   .84  .84

  25 CFY19a   1473 2007   .65  .62

  26 CFY19b   1507 2007  -.23B-.25B

  27 CFY20a   1724 2007   .74  .78

  28 CFY20b   1743 2007   .76  .71

 Av segment correlation   .68  .67

 PART 7:  DESCRIPTIVE STATISTICS: Clarks Fork Yellowstone NW                                       16:57  Tue 07 Jun 2011  Page  10

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



                                                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 CFY03a   1862 2007    146      6      1    .395   1.04   2.63   .446   .787   .209   2.70   .397  -.059   1

   2 CFY04a   1785 2007    223      9      0    .686   1.27   4.57   .519   .767   .192   2.70   .420  -.067   2

   3 CFY04b   1742 2007    266     11      0    .624   1.25   2.71   .479   .822   .183   2.67   .407  -.020   1

   4 CFY05a   1609 2007    399     16      0    .655    .89   3.57   .458   .832   .226   2.48   .328  -.038   4

   5 CFY05b   1610 2007    398     16      0    .649    .92   2.90   .511   .854   .206   2.58   .355  -.027   5

   6 CFY06a   1757 2007    251     10      0    .631   1.25   2.73   .434   .755   .205   2.48   .311  -.045   1

   7 CFY07a   1755 2007    253     10      0    .551   1.17   5.51  1.062   .910   .280   2.54   .367  -.040   3

   8 CFY08a   1760 2007    248     10      0    .544   1.11   2.01   .359   .769   .186   2.71   .406   .017   1

   9 CFY09a   1477 2007    531     21      0    .780    .36   1.54   .230   .818   .288   2.59   .338  -.031   1

  10 CFY09b   1447 2007    561     22      0    .753    .42   1.87   .283   .816   .294   2.68   .322  -.044   1

  11 CFY10a   1648 2007    360     15      0    .758    .63   1.70   .271   .835   .202   2.66   .393  -.036   1

  12 CFY10b   1628 2007    380     15      0    .720    .70   1.89   .324   .831   .199   2.58   .350  -.017   1

  13 CFY12a   1626 2007    382     15      0    .682    .61   1.36   .242   .740   .211   2.57   .314  -.016   1

  14 CFY12b   1625 2007    383     15      0    .721    .80   1.98   .312   .711   .203   2.56   .343  -.023   1

  15 CFY13a   1735 2007    273     11      0    .741    .52   1.14   .186   .727   .207   2.74   .348  -.003   1

  16 CFY13b   1684 2007    324     13      0    .754    .65   1.29   .167   .526   .201   2.65   .431  -.009   1

  17 CFY13c   1890 2007    118      5      0    .767    .39    .62   .096   .383   .225   2.47   .445  -.035   1

  18 CFY14a   1767 2007    241     10      0    .677   1.21   2.81   .426   .613   .262   2.78   .467  -.056   1

  19 CFY14b   1769 2007    239     10      0    .609   1.13   2.69   .458   .708   .264   2.78   .448  -.030   1

  20 CFY15a   1706 2007    302     12      0    .676   1.22   2.34   .313   .648   .171   2.80   .420  -.007   1

  21 CFY15b   1787 2007    221      9      0    .723    .92   1.57   .228   .683   .155   2.69   .421  -.027   1

  22 CFY16a   1745 2007    263     11      0    .658   1.13   2.64   .569   .906   .176   2.71   .427  -.028   1

  23 CFY17a   1645 2007    363     15      0    .747    .59   2.13   .305   .762   .257   2.66   .381  -.033   1

  24 CFY17b   1636 2007    372     15      0    .694    .50   2.06   .303   .834   .248   2.70   .425  -.035   1

  25 CFY19a   1473 2007    535     22      0    .666    .47   1.71   .293   .894   .231   2.55   .305  -.012   1

  26 CFY19b   1507 2007    501     20      2    .165    .35   1.73   .773   .115   .237   2.03   .099  -.020   1

  27 CFY20a   1724 2007    284     12      0    .729    .73   1.58   .261   .780   .192   2.60   .344  -.002   1

  28 CFY20b   1743 2007    265     11      0    .731    .82   1.74   .374   .853   .216   2.59   .429  -.031   1

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

 Total or mean:           9082    367      3    .660    .76   5.51   .379   .742   .224   2.80   .358  -.027

