Rowe Lakes, Montana  - mt126 
Additional Information 
Margaret Colenutt  Ray Colenutt          

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   : MT126.CRN
      Measurement file name  : MT126.RWL
      Date checked           : 08JUN11
      Checked by             : B. Bauer
      Beginning year         : 1252
      Ending year            : 1990
      Principal investigators: Margaret Colenutt  Ray Colenutt                    
      Site name              : Rowe Lakes
      Site location          : Montana      
      Species information    : LALY SUBALPINE LARCH
      Latitude               :   4902
      Longitude              : -11402
      Elevation              : 2135M

      Series intercorrelation: 0.802
      Avg mean sensitivity   : 0.391
      Avg standard deviation : 0.211
      Avg autocorrelation    : 0.638
      Number dated series    : 45
      Segment length tested  : 50

      Number problem segments: 0
      Pct problem segments   : 0.00



 PART 5:  CORRELATION OF SERIES BY SEGMENTS: Rowe Lakes                                            16:56  Wed 08 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 R9104S   1538 1990                                                          .81  .85  .75  .86  .87  .81  .65  .71  .72

   2 R9116E   1376 1990                            .92  .88  .85  .80  .83  .87  .81  .76  .80  .84  .88  .87  .88  .91  .81

   3 R9116N   1318 1990             .87  .87  .72  .64  .87  .88  .77  .81  .88  .91  .87  .76  .81  .86  .85  .83  .83  .81

   4 R9120N   1586 1990                                                                    .46  .59  .62  .54  .67  .75  .74

   5 R9120S   1626 1990                                                                              .69  .78  .83  .86  .83

   6 R9122N   1606 1990                                                                         .65  .78  .84  .72  .71  .69

   7 R9123E   1605 1990                                                                         .81  .84  .82  .74  .71  .73

   8 R9123W   1506 1990                                                     .55  .53  .54  .57  .80  .87  .85  .81  .83  .81

   9 R9128S   1458 1990                                           .50  .74  .72  .59  .75  .78  .78  .72  .71  .74  .78  .68

  10 R9150N   1646 1990                                                                              .81  .82  .77  .87  .83

  11 R9152N   1604 1985                                                                         .79  .82  .76  .83  .89  .80

  12 R9153N   1532 1990                                                          .79  .86  .78  .85  .92  .89  .87  .86  .83

  13 R9153S   1568 1990                                                               .84  .80  .87  .89  .83  .77  .83  .82

  14 R9181S   1541 1990                                                          .82  .84  .79  .74  .74  .76  .76  .77  .76

  15 R9182S   1474 1990                                           .77  .76  .75  .71  .76  .85  .90  .83  .77  .74  .63  .61

  16 R9201A   1312 1672             .66  .75  .87  .85  .85  .78  .73  .81  .75  .86  .86  .68  .80  .90

  17 R9202H   1278 1644        .50  .81  .81  .74  .74  .80  .81  .80  .75  .68  .88  .91  .82  .80

  18 R9202L   1273 1644   .52  .53  .69  .70  .63  .70  .82  .84  .83  .86  .84  .94  .94  .85  .40

  19 R9205A   1306 1614             .58  .81  .74  .70  .83  .81  .77  .84  .86  .91  .91  .91

  20 R9213A   1307 1640             .59  .70  .64  .58  .79  .86  .80  .79  .71  .85  .88  .77  .82

  21 R9214A   1495 1979                                                .84  .84  .85  .84  .83  .88  .90  .87  .78  .76  .83

  22 R9216A   1464 1980                                           .41  .61  .85  .89  .87  .83  .91  .91  .87  .79  .74  .76

  23 R9218A   1352 1681                       .80  .76  .75  .80  .84  .84  .81  .88  .84  .69  .81  .68  .65

  24 R9220A   1319 1639             .53  .63  .79  .80  .72  .73  .77  .86  .78  .90  .92  .66  .71

  25 R9220H   1349 1661                  .66  .69  .73  .71  .76  .76  .79  .84  .92  .91  .77  .83  .89

  26 R9221A   1318 1636             .62  .65  .83  .85  .89  .90  .85  .88  .86  .89  .90  .81  .65

  27 R9244A   1555 1967                                                               .79  .77  .83  .81  .73  .73  .81  .88

  28 R9249A   1272 1600   .75  .75  .72  .77  .83  .82  .85  .88  .84  .82  .79  .84  .84  .90

  29 R9249B   1272 1618   .80  .80  .78  .80  .89  .86  .79  .81  .82  .89  .84  .89  .92  .81

  30 R9250A   1311 1819             .75  .81  .89  .91  .86  .86  .82  .76  .75  .79  .84  .86  .87  .88  .90  .84  .80  .79

  31 R9250B   1311 1827             .78  .81  .85  .89  .89  .89  .86  .86  .89  .88  .90  .86  .90  .91  .88  .85  .82  .89

  32 R9253A   1272 1635   .70  .71  .69  .69  .77  .73  .76  .74  .75  .78  .68  .80  .85  .83  .87

  33 R9253B   1272 1666   .71  .72  .85  .86  .76  .70  .76  .63  .52  .77  .82  .78  .84  .85  .83  .60

  34 R9254A   1319 1637             .79  .82  .85  .79  .69  .69  .76  .87  .71  .75  .88  .75  .71

  35 R9258A   1289 1667        .65  .70  .74  .82  .73  .75  .82  .81  .87  .80  .79  .86  .84  .89  .88

  36 R9307B   1315 1669             .55  .61  .72  .77  .84  .89  .89  .85  .76  .84  .89  .89  .81  .70

  37 R9309A   1292 1617        .79  .81  .74  .69  .81  .90  .79  .75  .87  .88  .92  .93  .91

  38 RL403A   1383 1903                            .77  .85  .86  .83  .78  .79  .92  .89  .74  .77  .77  .75  .79  .84  .78

  39 RL403B   1381 1918                            .68  .80  .92  .84  .82  .85  .81  .76  .67  .72  .80  .76  .71  .82  .81

  40 RL404A   1368 1954                       .53  .55  .80  .90  .83  .78  .84  .95  .94  .79  .84  .78  .68  .73  .83  .84

  41 RL407A   1334 1977                  .53  .60  .63  .83  .89  .84  .84  .88  .94  .91  .77  .85  .71  .54  .65  .81  .84

  42 RL408A   1489 1887                                                .65  .65  .83  .77  .68  .77  .75  .73  .74  .82  .80

  43 RL514A   1279 1713        .50  .55  .66  .78  .77  .80  .80  .66  .62  .73  .84  .88  .70  .83  .86  .78  .80

  44 RL516A   1252 1687   .59  .65  .77  .89  .89  .88  .86  .78  .72  .83  .86  .91  .89  .75  .82  .85  .71

  45 RL516B   1252 1668   .60  .62  .69  .80  .83  .81  .86  .90  .84  .86  .88  .93  .92  .81  .87  .87

 Av segment correlation   .67  .66  .70  .74  .77  .76  .81  .82  .77  .80  .79  .84  .85  .78  .80  .81  .78  .77  .80  .79

 PART 5:  CORRELATION OF SERIES BY SEGMENTS: Rowe Lakes                                            16:56  Wed 08 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

                         1799 1824 1849 1874 1899 1924 1949 1974 1999

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

   1 R9104S   1538 1990   .72  .81  .81  .57  .62  .64  .74  .86  .85

   2 R9116E   1376 1990   .83  .82  .74  .81  .82  .84  .91  .86  .84

   3 R9116N   1318 1990   .80  .73  .69  .82  .88  .90  .76  .71  .81

   4 R9120N   1586 1990   .70  .67  .67  .74  .67  .67  .83  .88  .83

   5 R9120S   1626 1990   .71  .81  .85  .82  .82  .79  .83  .85  .84

   6 R9122N   1606 1990   .68  .72  .79  .76  .70  .71  .81  .81  .84

   7 R9123E   1605 1990   .80  .83  .83  .68  .66  .79  .83  .83  .87

   8 R9123W   1506 1990   .83  .82  .81  .84  .73  .72  .67  .73  .72

   9 R9128S   1458 1990   .68  .75  .71  .72  .76  .77  .76  .81  .78

  10 R9150N   1646 1990   .72  .69  .73  .77  .79  .80  .77  .84  .91

  11 R9152N   1604 1985   .80  .87  .87  .78  .77  .81  .86  .89  .84

  12 R9153N   1532 1990   .83  .90  .89  .81  .82  .78  .81  .71  .67

  13 R9153S   1568 1990   .81  .90  .91  .87  .81  .81  .86  .85  .87

  14 R9181S   1541 1990   .71  .71  .68  .62  .62  .73  .74  .75  .75

  15 R9182S   1474 1990   .67  .67  .67  .76  .80  .71  .76  .83  .76

  21 R9214A   1495 1979   .86  .82  .80  .83  .83  .83  .83  .83  .79

  22 R9216A   1464 1980   .84  .69  .73  .88  .86  .81  .86  .82  .71

  27 R9244A   1555 1967   .81  .83  .79  .74  .78  .80  .82  .80

  30 R9250A   1311 1819   .81  .83

  31 R9250B   1311 1827   .88  .83  .82

  38 RL403A   1383 1903   .68  .63  .75  .82  .67  .67

  39 RL403B   1381 1918   .77  .64  .70  .84  .81  .80

  40 RL404A   1368 1954   .77  .78  .82  .82  .85  .80  .78  .74

  41 RL407A   1334 1977   .79  .65  .67  .83  .81  .75  .67  .71  .68

  42 RL408A   1489 1887   .78  .72  .70  .78  .76

 Av segment correlation   .77  .76  .77  .78  .77  .77  .79  .81  .80

 PART 7:  DESCRIPTIVE STATISTICS: Rowe Lakes                                                       16:56  Wed 08 Jun 2011  Page   9

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



                                                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 R9104S   1538 1990    453     18      0    .783    .38   1.37   .213   .687   .393   2.49   .359  -.021   1

   2 R9116E   1376 1990    615     24      0    .871    .30   1.22   .167   .615   .419   2.50   .286  -.001   1

   3 R9116N   1318 1990    673     27      0    .837    .34   1.43   .237   .707   .464   2.56   .303   .007   1

   4 R9120N   1586 1990    405     16      0    .706    .47   1.43   .218   .372   .418   2.66   .310  -.012   1

   5 R9120S   1626 1990    365     14      0    .783    .40   1.13   .204   .505   .428   2.72   .366  -.016   1

   6 R9122N   1606 1990    385     15      0    .745    .59   1.49   .247   .580   .330   2.65   .387  -.005   1

   7 R9123E   1605 1990    386     15      0    .789    .55   1.22   .220   .386   .387   2.55   .389  -.024   1

   8 R9123W   1506 1990    485     19      0    .737    .58   2.00   .243   .419   .367   2.58   .323   .011   1

   9 R9128S   1458 1990    533     21      0    .797    .23    .60   .133   .637   .462   2.54   .304  -.017   1

  10 R9150N   1646 1990    345     14      0    .800    .62   1.76   .310   .616   .392   2.47   .382  -.007   1

  11 R9152N   1604 1985    382     15      0    .825    .50   1.24   .241   .651   .357   2.57   .320  -.024   1

  12 R9153N   1532 1990    459     18      0    .836    .42   1.47   .269   .718   .406   2.61   .341  -.014   1

  13 R9153S   1568 1990    423     17      0    .859    .41   1.40   .235   .667   .402   2.48   .320  -.020   1

  14 R9181S   1541 1990    450     18      0    .770    .23    .57   .107   .611   .382   2.44   .321  -.040   3

  15 R9182S   1474 1990    517     21      0    .814    .27   1.16   .171   .716   .442   2.45   .306  -.017   1

  16 R9201A   1312 1672    361     14      0    .795    .48   1.89   .332   .749   .369   2.62   .370  -.007   2

  17 R9202H   1278 1644    367     14      0    .779    .37   1.63   .261   .798   .313   2.53   .273  -.011   1

  18 R9202L   1273 1644    372     15      0    .745    .41   1.43   .215   .673   .327   2.59   .305  -.013   1

  19 R9205A   1306 1614    309     12      0    .820    .37   1.05   .154   .455   .359   2.72   .368  -.031   1

  20 R9213A   1307 1640    334     13      0    .759    .62   2.28   .323   .658   .354   2.65   .364  -.016   1

  21 R9214A   1495 1979    485     20      0    .851    .34   1.17   .234   .783   .415   2.37   .261  -.012   2

  22 R9216A   1464 1980    517     21      0    .826    .35   1.30   .250   .824   .378   2.39   .276  -.016   2

  23 R9218A   1352 1681    330     13      0    .786    .44   1.33   .213   .595   .358   2.56   .363  -.025   1

  24 R9220A   1319 1639    321     13      0    .779    .33   1.06   .171   .601   .391   2.62   .331  -.027   1

  25 R9220H   1349 1661    313     13      0    .801    .40   1.37   .233   .571   .428   2.68   .411  -.016   6

  26 R9221A   1318 1636    319     13      0    .824    .57   1.77   .299   .590   .387   2.52   .336  -.007   1

  27 R9244A   1555 1967    413     16      0    .798    .36    .87   .166   .491   .422   2.55   .383   .009   2

  28 R9249A   1272 1600    329     14      0    .818    .37   1.00   .202   .695   .351   2.48   .288  -.001   1

  29 R9249B   1272 1618    347     14      0    .841    .51   1.43   .269   .643   .351   2.43   .307   .016   1

  30 R9250A   1311 1819    509     20      0    .826    .36   1.13   .206   .645   .404   2.46   .307   .000   2

  31 R9250B   1311 1827    517     21      0    .890    .32    .93   .163   .584   .413   2.44   .308  -.020   1

  32 R9253A   1272 1635    364     15      0    .759    .53   1.38   .254   .611   .342   2.45   .288  -.009   1

  33 R9253B   1272 1666    395     16      0    .762    .33    .86   .167   .667   .334   2.39   .270  -.029   1

  34 R9254A   1319 1637    319     13      0    .789    .35    .93   .179   .540   .361   2.49   .273  -.033   1

  35 R9258A   1289 1667    379     15      0    .822    .38    .95   .172   .601   .360   2.35   .230  -.027   1

  36 R9307B   1315 1669    355     14      0    .797    .28    .89   .150   .567   .431   2.45   .336  -.034   6

  37 R9309A   1292 1617    326     13      0    .849    .50   1.74   .274   .671   .371   2.48   .274   .012   1

  38 RL403A   1383 1903    521     21      0    .799    .34   1.01   .179   .594   .404   2.57   .349  -.005   1

  39 RL403B   1381 1918    538     21      0    .801    .34   1.53   .208   .679   .438   2.57   .373  -.015   1

  40 RL404A   1368 1954    587     24      0    .807    .27   1.40   .162   .715   .376   2.45   .339   .004   1

  41 RL407A   1334 1977    644     26      0    .783    .32   1.07   .198   .705   .439   2.47   .328  -.023   1

  42 RL408A   1489 1887    399     16      0    .768    .27    .96   .170   .730   .402   2.62   .344  -.035   1

  43 RL514A   1279 1713    435     17      0    .756    .37   1.19   .192   .626   .356   2.54   .331  -.002   6

  44 RL516A   1252 1687    436     17      0    .795    .42   1.56   .268   .790   .369   2.61   .368  -.007   1

  45 RL516B   1252 1668    417     16      0    .829    .36    .96   .174   .680   .348   2.58   .322  -.014   1

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

 Total or mean:          19134    762      0    .802    .39   2.28   .211   .638   .391   2.72   .325  -.013

