Spot Mountain West, Montana  - mt122 
Additional Information 
Pederson  Graumlich  Littell  Peters  Waggoner            

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   : MT122.CRN
      Measurement file name  : MT122.RWL
      Date checked           : 07JUN11
      Checked by             : B. Bauer
      Beginning year         : 1163
      Ending year            : 2002
      Principal investigators: Pederson  Graumlich  Littell  Peters  Waggoner           
      Site name              : Spot Mountain West
      Site location          : Montana      
      Species information    : PSME DOUGLAS-FIR
      Latitude               :   4831
      Longitude              : -11322
      Elevation              : 1950M

      Series intercorrelation: 0.625
      Avg mean sensitivity   : 0.235
      Avg standard deviation : 0.291
      Avg autocorrelation    : 0.749
      Number dated series    : 65
      Segment length tested  : 50

      Number problem segments: 30
      Pct problem segments   : 3.01



 PART 5:  CORRELATION OF SERIES BY SEGMENTS: Spot Mountain West                                    16:49  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   1250 1275 1300 1325 1350 1375 1400 1425 1450 1475 1500 1525 1550 1575 1600 1625 1650 1675 1700 1725

                         1299 1324 1349 1374 1399 1424 1449 1474 1499 1524 1549 1574 1599 1624 1649 1674 1699 1724 1749 1774

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

   1 SMW003A  1640 1809                                                                              .54  .55  .52  .49  .45

   2 SMW006A  1601 2001                                                                         .29A .39  .53  .60  .54  .48

   3 SMW006B  1630 2001                                                                              .34  .49  .57  .55  .52

   4 SMW007A  1686 2001                                                                                        .43  .34  .49

   5 SMW007B  1686 1984                                                                                        .60  .51  .53

   6 SMW008A  1738 2001                                                                                                  .65

   7 SMW009A  1695 2001                                                                                        .36  .26A .46

   8 SMW010A  1690 2001                                                                                        .72  .64  .66

  10 SMW106A  1732 2001                                                                                                  .33

  11 SMW106B  1690 2001                                                                                        .32A .45  .48

  12 SMW108B  1569 1769                                                               .53  .50  .30A .42  .49  .38  .30A .48

  13 SMW109A  1339 2001                  .48  .56  .74  .78  .79  .58  .44  .70  .64  .66  .70  .72  .70  .65  .74  .77  .63

  14 SMW109B  1416 1809                                 .65  .65  .57  .53  .55  .53  .67  .73  .70  .59  .64  .78  .80  .56

  16 SMW111A  1720 2001                                                                                             .55  .57

  17 SMW111B  1640 2001                                                                              .49  .58  .62  .56  .66

  18 SMW204A  1724 2001                                                                                             .44  .49

  19 SMW204B  1737 2001                                                                                                  .42

  22 SMW600A  1729 2002                                                                                                  .38

  27 TML114A  1329 1994                  .65  .73  .72  .77  .76  .74  .71  .64  .60  .75  .74  .70  .73  .75  .80  .75  .66

  28 TML116A  1651 2000                                                                                   .64  .63  .57  .60

  30 TML117A  1163 2001   .22A .20A .36  .56  .63  .62  .70  .61  .49  .47  .56  .50  .57  .74  .63  .61  .71  .79  .77  .69

  31 TML118A  1419 2001                                 .51  .62  .61  .60  .62  .57  .66  .69  .58  .54  .60  .73  .82  .80

  32 TML118B  1696 2001                                                                                        .73  .67  .68

  33 TML119A  1386 2000                            .82  .86  .77  .78  .80  .65  .49  .65  .67  .68  .79  .78  .77  .68  .60

  35 TML120B  1720 2001                                                                                             .41  .61

  36 TML121A  1508 2001                                                     .66  .73  .79  .35  .37  .88  .80  .77  .80  .74

  37 TML121B  1537 1999                                                          .79  .79  .73  .73  .87  .74  .71  .85  .76

  40 TML403A  1371 2001                       .59  .56  .75  .85  .84  .80  .77  .55  .54  .62  .53  .57  .64  .67  .69  .64

  41 TML403B  1346 2001                  .70  .69  .64  .70  .81  .81  .84  .80  .60  .58  .80  .76  .59  .71  .79  .78  .73

  42 TML404A  1520 2001                                                     .51  .62  .80  .48  .36  .58  .65  .78  .72  .62

  43 TML404C  1389 2001                            .64  .66  .69  .71  .68  .78  .75  .75  .67  .55  .57  .68  .78  .68  .49

  45 TML455A  1371 2001                       .73  .72  .77  .77  .78  .81  .79  .78  .81  .70  .70  .75  .65  .72  .76  .61

  46 TML455B  1363 2001                       .76  .74  .75  .65  .66  .80  .83  .76  .81  .80  .69  .68  .69  .71  .78  .70

  47 TML500A  1553 2001                                                               .32A .56  .57  .55  .62  .67  .70  .61

  48 TML500B  1543 2001                                                          .37  .55  .69  .72  .52  .62  .72  .66  .58

  49 TML501A  1600 2001                                                                         .56  .66  .79  .76  .68  .63

  50 TML502A  1489 2001                                                .60  .59  .40  .36  .69  .68  .50  .52  .67  .54  .49

  51 TML502B  1489 1859                                                .58  .51  .53  .63  .64  .58  .54  .53  .69  .57  .43

  53 TML600A  1490 2002                                                .64  .67  .80  .80  .65  .68  .81  .74  .67  .73  .77

  54 TML600B  1520 2002                                                     .80  .81  .83  .73  .72  .82  .81  .81  .81  .79

  55 TML601A  1332 1989                  .46  .68  .75  .80  .78  .75  .78  .81  .67  .70  .71  .75  .83  .81  .78  .67  .70

  56 TML601B  1380 1949                            .75  .80  .75  .73  .59  .55  .69  .81  .80  .79  .67  .61  .68  .62  .67

  57 TML602A  1268 2002   .22B .20A .32A .31A .36  .45  .37  .35  .45  .62  .40  .27B .36  .43  .54  .55  .66  .59  .57  .57

  58 TML602B  1560 2002                                                               .39  .37B .48  .39  .49  .65  .60  .56

  59 TML603A  1620 2002                                                                         .56  .65  .67  .78  .84  .79

  60 TML603B  1617 2002                                                                         .43  .42  .69  .72  .72  .61

  61 TML604A  1558 1817                                                               .64  .80  .64  .63  .76  .76  .64  .69

  62 TML605Ax 1410 1679                                 .58  .62  .67  .70  .74  .67  .71  .70  .61  .43  .44

  63 TML605Bx 1447 1819                                      .69  .64  .65  .71  .47  .48  .64  .54  .55  .79  .81  .65  .65

 Av segment correlation   .22  .20  .34  .53  .63  .68  .70  .70  .68  .67  .66  .61  .64  .65  .60  .60  .65  .68  .63  .60

 PART 5:  CORRELATION OF SERIES BY SEGMENTS: Spot Mountain West                                    16:49  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   1750 1775 1800 1825 1850 1875 1900 1925 1950 1975

                         1799 1824 1849 1874 1899 1924 1949 1974 1999 2024

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

   1 SMW003A  1640 1809   .50  .47

   2 SMW006A  1601 2001   .57  .66  .70  .74  .73  .65  .44  .44  .51  .52

   3 SMW006B  1630 2001   .61  .60  .59  .80  .77  .52  .40  .67  .76  .75

   4 SMW007A  1686 2001   .47  .36  .47  .63  .53  .47  .64  .76  .68  .69

   5 SMW007B  1686 1984   .62  .55  .55  .73  .61  .46  .59  .77  .73

   6 SMW008A  1738 2001   .75  .69  .72  .73  .63  .50  .56  .70  .71  .71

   7 SMW009A  1695 2001   .60  .57  .71  .77  .61  .61  .41  .49  .65  .65

   8 SMW010A  1690 2001   .73  .61  .71  .70  .53  .46  .42  .55  .57  .57

   9 SMW101A  1770 2001   .53  .52  .51  .56  .54  .37  .39B .57  .55  .55

  10 SMW106A  1732 2001   .28A .54  .68  .73  .64  .40  .40B .62  .63  .62

  11 SMW106B  1690 2001   .33A .55  .71  .61  .57  .48  .48  .72  .71  .72

  13 SMW109A  1339 2001   .60  .68  .66  .42  .38  .56  .52  .68  .71  .73

  14 SMW109B  1416 1809   .46  .65

  15 SMW110A  1760 2001   .09B .03B .69  .77  .69  .71  .74  .80  .78  .78

  16 SMW111A  1720 2001   .54  .65  .82  .67  .60  .56  .46B .70  .71  .71

  17 SMW111B  1640 2001   .73  .74  .76  .77  .78  .66  .47  .67  .75  .74

  18 SMW204A  1724 2001   .71  .69  .65  .60  .57  .56  .61  .75  .74  .72

  19 SMW204B  1737 2001   .52  .56  .70  .71  .63  .62  .66  .78  .78  .78

  20 SMW205A  1767 2001   .59  .57  .71  .77  .65  .57  .75  .80  .66  .68

  21 SMW205B  1760 2001   .48B .63  .69  .59  .48  .53  .60  .64  .64  .63

  22 SMW600A  1729 2002   .40  .35  .51  .61  .65  .67  .69  .77  .69  .68

  23 SMW600B  1790 2002        .40  .46  .64  .63  .56  .48  .57  .61  .57

  24 SMW601A  1812 2002             .32A .42  .43  .70  .70  .62  .53  .51

  25 SMW602A  1760 2002   .40  .47  .71  .59  .59  .56  .54  .76  .72  .73

  26 TML113a  1771 1919   .22B .30A .47  .75  .65  .51

  27 TML114A  1329 1994   .69  .81  .82  .85  .85  .63  .53  .68  .66

  28 TML116A  1651 2000   .56  .61  .74  .75  .70  .66  .63  .67  .62  .57

  29 TML116B  1890 2000                            .75  .72  .79  .77  .75

  30 TML117A  1163 2001   .67  .70  .63  .51  .51  .57  .46  .43  .51  .48

  31 TML118A  1419 2001   .74  .78  .76  .58  .60  .54  .47  .45  .40  .45

  32 TML118B  1696 2001   .71  .76  .70  .60  .67  .61  .55  .56  .50  .53

  33 TML119A  1386 2000   .71  .76  .73  .83  .80  .65  .52  .56  .64  .62

  34 TML120A  1770 2001   .64  .64  .71  .81  .69  .45  .59  .84  .83  .82

  35 TML120B  1720 2001   .64  .66  .73  .83  .67  .44  .60  .86  .79  .78

  36 TML121A  1508 2001   .78  .72  .72  .73  .73  .78  .77  .74  .67  .70

  37 TML121B  1537 1999   .70  .80  .83  .76  .75  .77  .77  .73  .50

  38 TML400A  1830 2001                  .40  .40  .59  .52  .62  .59  .57

  39 TML400B  1824 2001             .61  .58  .54  .66  .68  .57  .43  .41

  40 TML403A  1371 2001   .62  .72  .70  .63  .66  .59  .39  .63  .74  .73

  41 TML403B  1346 2001   .73  .83  .80  .83  .80  .61  .61  .78  .80  .80

  42 TML404A  1520 2001   .51  .60  .69  .73  .73  .61  .59  .68  .55  .57

  43 TML404C  1389 2001   .42  .60  .72  .61  .58  .56  .61  .64  .46  .45

  44 TML452A  1832 2001                  .59  .67  .55  .53  .59  .31A .30A

  45 TML455A  1371 2001   .59  .69  .73  .81  .84  .78  .43  .52  .77  .76

  46 TML455B  1363 2001   .60  .65  .73  .82  .81  .70  .62  .75  .79  .79

  47 TML500A  1553 2001   .40  .55  .65  .68  .72  .72  .68  .68  .67  .68

  48 TML500B  1543 2001   .44  .45  .48  .70  .76  .71  .75  .66  .49  .48

  49 TML501A  1600 2001   .62  .69  .76  .86  .76  .64  .72  .79  .78  .78

  50 TML502A  1489 2001   .60  .56  .57  .60  .60  .52  .50  .61  .50  .48

  51 TML502B  1489 1859   .53  .49  .62  .75

  52 TML503B  1771 2001   .32A .28A .35  .36  .59  .78  .64  .66  .65  .66

  53 TML600A  1490 2002   .72  .73  .77  .69  .71  .79  .82  .80  .74  .74

  54 TML600B  1520 2002   .68  .61  .78  .81  .80  .85  .76  .72  .67  .68

  55 TML601A  1332 1989   .70  .73  .81  .82  .83  .69  .55  .71  .76

  56 TML601B  1380 1949   .69  .66  .74  .82  .80  .60  .57

  57 TML602A  1268 2002   .53  .61  .53  .52  .61  .59  .54  .69  .70  .68

  58 TML602B  1560 2002   .54  .32A .40  .61  .64  .71  .59  .57  .52  .54

  59 TML603A  1620 2002   .75  .81  .82  .80  .74  .67  .63  .72  .72  .69

  60 TML603B  1617 2002   .65  .78  .76  .74  .66  .50  .54  .71  .70  .68

  61 TML604A  1558 1817   .68  .73

  63 TML605Bx 1447 1819   .70  .73

  64 TML606Cx 1797 1918        .40  .39  .70  .60  .51

  65 TML607B  1750 1980   .36  .56  .57  .44  .52  .63  .60  .65  .65

 Av segment correlation   .57  .60  .66  .68  .65  .61  .58  .67  .65  .64

 PART 7:  DESCRIPTIVE STATISTICS: Spot Mountain West                                               16:49  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 SMW003A  1640 1809    170      7      0    .501    .37    .82   .117   .535   .233   2.67   .420  -.056   1

   2 SMW006A  1601 2001    401     16      1    .550    .55   2.32   .404   .912   .219   2.75   .349  -.055   1

   3 SMW006B  1630 2001    372     15      0    .593    .47   1.28   .292   .876   .266   2.49   .258  -.025   7

   4 SMW007A  1686 2001    316     13      0    .531    .47   1.50   .250   .731   .282   2.82   .450  -.030   1

   5 SMW007B  1686 1984    299     12      0    .606    .60   2.03   .311   .707   .288   2.72   .388  -.022   1

   6 SMW008A  1738 2001    264     11      0    .649   1.02   2.38   .349   .623   .223   2.64   .371  -.022   1

   7 SMW009A  1695 2001    307     13      1    .548    .88   2.56   .328   .771   .184   2.74   .339   .013   2

   8 SMW010A  1690 2001    312     13      0    .612    .72   1.65   .282   .762   .195   2.65   .420  -.048   5

   9 SMW101A  1770 2001    232     10      1    .493    .70   1.69   .251   .677   .232   2.64   .354  -.060   1

  10 SMW106A  1732 2001    270     11      2    .534    .86   2.58   .458   .822   .237   2.77   .447  -.027   1

  11 SMW106B  1690 2001    312     13      2    .542    .89   2.69   .478   .794   .270   2.84   .429  -.006   1

  12 SMW108B  1569 1769    201      8      2    .446    .46    .83   .146   .450   .275   2.52   .341  -.012   1

  13 SMW109A  1339 2001    663     27      0    .628    .34   1.96   .286   .898   .277   2.50   .274  -.022   1

  14 SMW109B  1416 1809    394     16      0    .629    .36   2.28   .280   .793   .267   2.72   .406   .011   1

  15 SMW110A  1760 2001    242     10      2    .602    .94  45.93  2.931   .011   .251   3.19   .402   .029   1

  16 SMW111A  1720 2001    282     12      1    .609    .61   1.56   .218   .640   .213   2.65   .312  -.029   1

  17 SMW111B  1640 2001    362     15      0    .646    .69   1.81   .279   .663   .248   2.70   .410  -.021   3

  18 SMW204A  1724 2001    278     12      0    .607    .69   1.99   .309   .789   .223   2.86   .467   .030   2

  19 SMW204B  1737 2001    265     11      0    .642    .67   1.80   .282   .718   .247   2.79   .459   .001   2

  20 SMW205A  1767 2001    235     10      0    .663    .60   1.71   .227   .654   .225   2.90   .406  -.036   1

  21 SMW205B  1760 2001    242     10      1    .575    .49   1.41   .172   .614   .208   2.88   .419  -.023   2

  22 SMW600A  1729 2002    274     11      0    .562    .67   2.09   .377   .875   .210   2.55   .319  -.034   1

  23 SMW600B  1790 2002    213      9      0    .522    .75   1.99   .348   .869   .178   2.63   .383  -.013   1

  24 SMW601A  1812 2002    191      8      1    .532    .84   2.46   .597   .907   .211   2.62   .376  -.023   1

  25 SMW602A  1760 2002    243     10      0    .587    .59   2.07   .343   .913   .172   2.72   .315  -.003   1

  26 TML113a  1771 1919    149      6      2    .440    .66   2.13   .336   .843   .168   2.94   .485  -.047   1

  27 TML114A  1329 1994    666     26      0    .720    .51   1.84   .224   .728   .237   2.61   .267  -.009   1

  28 TML116A  1651 2000    350     14      0    .645    .81   3.19   .370   .758   .207   2.77   .330  -.028   1

  29 TML116B  1890 2000    111      5      0    .747    .36   1.01   .204   .829   .242   2.92   .560  -.002   2

  30 TML117A  1163 2001    839     30      2    .548    .38   1.28   .193   .783   .268   2.68   .324  -.004   9

  31 TML118A  1419 2001    583     24      0    .606    .45   1.91   .261   .814   .241   2.59   .286  -.037   1

  32 TML118B  1696 2001    306     13      0    .631    .50   1.49   .271   .777   .260   2.75   .368  -.033   1

  33 TML119A  1386 2000    615     25      0    .711    .49   1.29   .195   .731   .225   2.60   .284  -.006   1

  34 TML120A  1770 2001    232     10      0    .696    .77   1.73   .281   .747   .203   2.63   .430  -.033   1

  35 TML120B  1720 2001    282     12      0    .638    .57   1.26   .211   .751   .218   2.61   .376  -.021   1

  36 TML121A  1508 2001    494     20      0    .695    .58   3.10   .402   .826   .265   2.73   .387  -.022   1

  37 TML121B  1537 1999    463     18      0    .732    .51   2.19   .344   .804   .290   2.56   .330  -.017   1

  38 TML400A  1830 2001    172      7      0    .507   1.20   3.64   .618   .881   .201   2.78   .380  -.015   1

  39 TML400B  1824 2001    178      8      0    .561   1.55   4.41   .875   .884   .227   2.75   .387  -.035   2

  40 TML403A  1371 2001    631     26      0    .655    .38   1.29   .182   .754   .257   2.73   .360   .004   1

  41 TML403B  1346 2001    656     27      0    .721    .46   1.49   .198   .725   .253   2.51   .223  -.004   1

  42 TML404A  1520 2001    482     20      0    .610    .22    .63   .083   .563   .277   2.74   .345  -.022   1

  43 TML404C  1389 2001    613     25      0    .624    .29   1.85   .240   .895   .265   2.53   .277  -.009   1

  44 TML452A  1832 2001    170      7      2    .494   1.09   3.40   .496   .833   .176   2.87   .483  -.019   1

  45 TML455A  1371 2001    631     26      0    .710    .40   1.21   .246   .882   .212   2.52   .264  -.017   1

  46 TML455B  1363 2001    639     26      0    .728    .47   1.25   .201   .804   .201   2.52   .270  -.009   1

  47 TML500A  1553 2001    449     18      1    .604    .47   1.06   .181   .779   .200   2.64   .297  -.019   1

  48 TML500B  1543 2001    459     19      0    .600    .39    .91   .144   .687   .230   2.51   .297  -.006   1

 PART 7:  DESCRIPTIVE STATISTICS: Spot Mountain West                                               16:49  Tue 07 Jun 2011  Page  14

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



                                                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  ()

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

  49 TML501A  1600 2001    402     16      0    .705    .48   1.18   .131   .597   .182   2.79   .350   .027   1

  50 TML502A  1489 2001    513     21      0    .544    .41   1.54   .208   .825   .210   2.88   .426  -.028   2

  51 TML502B  1489 1859    371     15      0    .595    .50   1.44   .190   .697   .206   2.83   .369  -.028   1

  52 TML503B  1771 2001    231     10      2    .527   1.24   3.62   .778   .921   .209   2.58   .369  -.003   1

  53 TML600A  1490 2002    513     21      0    .728    .57   2.19   .331   .823   .239   2.62   .341  -.013   1

  54 TML600B  1520 2002    483     20      0    .756    .41   2.14   .259   .792   .265   2.89   .368  -.007   1

  55 TML601A  1332 1989    658     26      0    .725    .46   1.69   .218   .800   .224   2.70   .337  -.009   1

  56 TML601B  1380 1949    570     22      0    .699    .51   1.34   .183   .643   .229   2.74   .297  -.007   1

  57 TML602A  1268 2002    735     30      5    .471    .40   2.73   .253   .812   .235   2.87   .389  -.019   1

  58 TML602B  1560 2002    443     18      2    .518    .32   1.26   .118   .419   .260   2.86   .367  -.010   1

  59 TML603A  1620 2002    383     16      0    .718    .62   1.48   .190   .561   .211   2.78   .372  -.030   1

  60 TML603B  1617 2002    386     16      0    .631    .86   2.64   .374   .739   .237   2.78   .336   .003   2

  61 TML604A  1558 1817    260     10      0    .672    .43    .74   .105   .473   .190   2.64   .343   .015   1

  62 TML605Ax 1410 1679    270     11      0    .617    .54   2.34   .222   .592   .217   2.86   .347   .026   1

  63 TML605Bx 1447 1819    373     15      0    .647    .41   2.05   .248   .854   .235   2.63   .290   .006   1

  64 TML606Cx 1797 1918    122      5      0    .506    .55   1.28   .182   .557   .224   2.75   .442  -.010   1

  65 TML607B  1750 1980    231      9      0    .544    .41   1.01   .191   .757   .242   2.68   .353   .022   2

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

 Total or mean:          24454    996     30    .625    .54  45.93   .291   .749   .235   3.19   .346  -.014

