Pintlers, Montana  - mt119 
Additional Information 
Jeremy Littell           

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   : MT119.CRN
      Measurement file name  : MT119.RWL
      Date checked           : 07JUN11
      Checked by             : B. Bauer
      Beginning year         : 1026
      Ending year            : 2005
      Principal investigators: Jeremy Littell                             
      Site name              : Pintlers
      Site location          : Montana      
      Species information    : LALY SUBALPINE LARCH
      Latitude               :   4601
      Longitude              : -11322
      Elevation              : 2700M

      Series intercorrelation: 0.699
      Avg mean sensitivity   : 0.296
      Avg standard deviation : 0.147
      Avg autocorrelation    : 0.576
      Number dated series    : 19
      Segment length tested  : 50

      Number problem segments: 1
      Pct problem segments   : 0.36



 PART 5:  CORRELATION OF SERIES BY SEGMENTS: Pintlers                                              16:46  Tue 07 Jun 2011  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   1150 1175 1200 1225 1250 1275 1300 1325 1350 1375 1400 1425 1450 1475 1500 1525 1550 1575 1600 1625

                         1199 1224 1249 1274 1299 1324 1349 1374 1399 1424 1449 1474 1499 1524 1549 1574 1599 1624 1649 1674

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

   1 01B      1168 2005   .45  .60  .70  .73  .59  .58  .74  .82  .62  .61  .63  .52  .59  .72  .71  .77  .82  .75  .75  .81

   3 04A      1531 2005                                                                              .61  .65  .69  .80  .87

   5 06B      1628 2005                                                                                                  .78

   8 09       1573 2005                                                                                   .58  .59  .60  .51

  10 11A      1618 2005                                                                                             .62  .71

  12 01A      1026 2005   .45  .60  .70  .73  .59  .58  .74  .82  .62  .61  .63  .52  .59  .72  .79  .78  .74  .75  .79  .81

  19 05B      1643 2005                                                                                                  .70

 Av segment correlation   .45  .60  .70  .73  .59  .58  .74  .82  .62  .61  .63  .52  .59  .72  .75  .72  .70  .70  .71  .74

 PART 5:  CORRELATION OF SERIES BY SEGMENTS: Pintlers                                              16:46  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   1650 1675 1700 1725 1750 1775 1800 1825 1850 1875 1900 1925 1950 1975

                         1699 1724 1749 1774 1799 1824 1849 1874 1899 1924 1949 1974 1999 2024

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

   1 01B      1168 2005   .89  .57  .47  .57  .56  .60  .64  .63  .62  .61  .55  .65  .72  .71

   2 02A      1823 2005                                 .77  .77  .81  .75  .65  .80  .84  .79

   3 04A      1531 2005   .78  .75  .87  .87  .77  .71  .74  .81  .62  .55  .67  .78  .74  .75

   4 05A      1681 2005        .17B .54  .81  .87  .84  .84  .82  .70  .64  .69  .77  .63  .62

   5 06B      1628 2005   .83  .77  .81  .80  .77  .85  .86  .81  .79  .80  .73  .81  .81  .79

   6 07A      1732 2005                  .73  .75  .71  .72  .78  .83  .86  .88  .83  .77  .75

   7 08A      1776 2005                            .66  .77  .82  .81  .71  .67  .81  .81  .80

   8 09       1573 2005   .56  .52  .54  .79  .80  .73  .82  .81  .77  .76  .68  .66  .69  .69

   9 10A      1686 2005        .41  .51  .81  .82  .83  .84  .85  .82  .80  .87  .86  .82  .80

  10 11A      1618 2005   .71  .69  .65  .75  .87  .82  .63  .65  .79  .39  .40  .67  .67  .69

  11 02C      1823 2005                                 .75  .71  .65  .65  .66  .69  .77  .76

  12 01A      1026 2005   .87  .73  .66  .69  .77  .70  .70  .73  .59  .52  .62  .65  .59  .62

  13 02B      1828 2005                                      .63  .62  .57  .61  .66  .65  .64

  14 10B      1703 2005             .62  .80  .79  .80  .80  .82  .69  .69  .83  .80  .81  .81

  15 08B      1794 2005                            .78  .79  .80  .78  .72  .67  .84  .81  .82

  16 07B      1775 2005                            .67  .76  .79  .71  .71  .77  .86  .82  .81

  17 06A      1659 2005   .77  .67  .68  .68  .68  .77  .84  .86  .87  .85  .72  .76  .78  .79

  18 11B      1714 2005             .43  .68  .74  .73  .65  .65  .53  .47  .62  .65  .61  .60

  19 05B      1643 2005   .76  .70  .44  .58  .88  .88  .88  .83  .80  .77  .77  .83  .79  .75

 Av segment correlation   .77  .60  .60  .74  .77  .76  .77  .77  .73  .67  .69  .76  .74  .74

 PART 7:  DESCRIPTIVE STATISTICS: Pintlers                                                         16:46  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 01B      1168 2005    838     34      0    .645    .25    .56   .089   .721   .227   2.67   .314  -.018   2

   2 02A      1823 2005    183      8      0    .767    .81   1.85   .308   .519   .276   2.76   .385  -.056   1

   3 04A      1531 2005    475     19      0    .706    .17    .35   .055   .360   .299   2.46   .306   .003   1

   4 05A      1681 2005    325     13      1    .619    .44   1.01   .197   .263   .451   2.45   .280  -.028   1

   5 06B      1628 2005    378     15      0    .791    .27    .53   .091   .535   .278   2.56   .308  -.013   1

   6 07A      1732 2005    274     11      0    .772    .62   1.70   .246   .585   .301   2.61   .302  -.022   1

   7 08A      1776 2005    230      9      0    .756    .77   1.59   .274   .468   .309   2.56   .411   .021   1

   8 09       1573 2005    433     18      0    .652    .29    .74   .121   .580   .322   2.44   .273  -.011   1

   9 10A      1686 2005    320     13      0    .748    .43    .94   .165   .658   .273   2.50   .269  -.014   1

  10 11A      1618 2005    388     16      0    .669    .36    .91   .151   .504   .332   2.57   .405  -.005   1

  11 02C      1823 2005    183      8      0    .713    .58   1.50   .253   .421   .426   2.61   .417  -.035   1

  12 01A      1026 2005    980     34      0    .656    .22    .64   .096   .743   .247   2.65   .346   .002   1

  13 02B      1828 2005    178      7      0    .632    .31    .64   .116   .427   .335   2.63   .386  -.027   1

  14 10B      1703 2005    303     12      0    .753    .54   1.12   .225   .651   .291   2.56   .384   .002   1

  15 08B      1794 2005    212      9      0    .765    .69   1.70   .301   .617   .301   2.59   .429  -.012   1

  16 07B      1775 2005    231      9      0    .744    .62   1.63   .250   .582   .295   2.54   .293  -.035   1

  17 06A      1659 2005    347     14      0    .771    .21    .51   .082   .655   .261   2.61   .324  -.014   1

  18 11B      1714 2005    292     12      0    .585    .41    .93   .163   .434   .361   2.59   .335   .009   1

  19 05B      1643 2005    363     15      0    .748    .27    .66   .113   .585   .310   2.54   .358  -.002   1

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

 Total or mean:           6933    276      1    .699    .37   1.85   .147   .576   .296   2.76   .335  -.011

