Pumphouse update, Colorado  - co648 
Additional Information 
Connie A. Woodhouse  Mark Losleben  Jeff Lukas         

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   : CO648.CRN
      Measurement file name  : CO648.RWL
      Date checked           : 07JUN11
      Checked by             : B. Bauer
      Beginning year         : 1175
      Ending year            : 2002
      Principal investigators: Connie A. Woodhouse  Mark Losleben  Jeff Lukas            
      Site name              : Pumphouse update
      Site location          : Colorado     
      Species information    : PIED PINYON
      Latitude               :   3958
      Longitude              : -10631
      Elevation              : 2194m

      Series intercorrelation: 0.821
      Avg mean sensitivity   : 0.400
      Avg standard deviation : 0.238
      Avg autocorrelation    : 0.617
      Number dated series    : 74
      Segment length tested  : 50

      Number problem segments: 0
      Pct problem segments   : 0.00



 PART 5:  CORRELATION OF SERIES BY SEGMENTS: Pumphouse update                                      16:43  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   1175 1200 1225 1250 1275 1300 1325 1350 1375 1400 1425 1450 1475 1500 1525 1550 1575 1600 1625 1650

                         1224 1249 1274 1299 1324 1349 1374 1399 1424 1449 1474 1499 1524 1549 1574 1599 1624 1649 1674 1699

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

   2 pum041   1586 1999                                                                                   .48  .43  .54  .75

   3 pum242   1550 1999                                                                              .70  .71  .74  .68  .69

   4 pum221   1450 1999                                                          .90  .94  .92  .79  .74  .86  .86  .90  .93

   5 pum022   1439 1999                                                     .74  .73  .80  .76  .76  .63  .72  .83  .83  .85

   6 pum241   1530 1999                                                                         .79  .88  .81  .82  .87  .87

   7 pum072   1379 1999                                           .75  .85  .84  .85  .89  .91  .80  .76  .81  .65  .71  .86

   8 pum151   1386 1999                                           .67  .69  .71  .75  .85  .87  .62  .41  .73  .91  .92  .88

   9 pum262   1415 1999                                                .71  .69  .89  .88  .84  .86  .86  .89  .90  .89  .87

  10 pum122   1512 1999                                                                    .75  .72  .81  .82  .81  .89  .92

  11 pum121   1414 1999                                                .77  .82  .77  .76  .85  .87  .87  .93  .94  .95  .94

  12 pum251   1544 1999                                                                         .74  .78  .86  .90  .91  .90

  13 pum111   1667 1999                                                                                                  .82

  14 pum132   1480 1880                                                               .65  .89  .83  .81  .81  .81  .87  .91

  15 pum131   1430 1770                                                     .85  .89  .94  .89  .82  .87  .91  .87  .77  .71

  16 pum133   1452 1765                                                          .87  .92  .92  .85  .86  .90  .88  .89  .87

  17 pum162   1499 1999                                                               .68  .73  .66  .75  .85  .84  .83  .85

  19 pum231   1412 1587                                                .70  .69  .84  .82  .87  .76  .76

  20 pum231   1620 1999                                                                                        .84  .86  .90

  21 pum161   1470 1999                                                          .85  .85  .77  .71  .81  .89  .84  .86  .85

  23 pum071   1410 1705                                                .73  .79  .85  .85  .83  .84  .87  .90  .88  .88  .89

  26 pum011   1645 1999                                                                                             .87  .88

  27 pum021   1400 1999                                                .50  .56  .72  .84  .91  .82  .67  .78  .81  .82  .88

  28 pum012   1593 1999                                                                                   .63  .56  .66  .84

  32 pum271   1538 1999                                                                         .86  .85  .93  .84  .80  .87

  33 pum052   1449 1610                                                     .90  .90  .87  .86  .88  .81  .79

  34 pum141   1487 1999                                                               .63  .81  .81  .73  .83  .92  .89  .91

  35 pum142   1330 1999                                 .63  .56  .56  .61  .51  .55  .70  .69  .73  .68  .62  .62  .74  .85

  36 pum252   1444 1620                                                     .65  .72  .67  .69  .70  .77  .69

  38 pum261   1354 1999                                      .52  .67  .83  .77  .48  .61  .85  .83  .81  .87  .91  .92  .94

  39 pum272   1650 1999                                                                                                  .59

  40 pum152   1398 1999                                           .67  .65  .61  .78  .87  .79  .70  .71  .76  .78  .88  .92

  41 pum222   1386 1705                                           .64  .72  .84  .88  .90  .90  .87  .84  .89  .91  .92  .91

  42 pum232   1422 1580                                                .75  .77  .79  .83  .85  .71  .76

  43 pum232   1620 1999                                                                                        .86  .83  .83

  46 pum671   1640 2002                                                                                             .61  .62

  53 pum811   1596 2002                                                                                   .50  .49  .70  .85

  58 pum641   1618 2002                                                                                        .89  .89  .90

  60 pum642   1628 2002                                                                                             .85  .89

  61 pum682   1364 1750                                      .62  .75  .79  .72  .41  .58  .91  .82  .84  .88  .87  .87  .86

  62 pux131   1296 1410                       .42  .51  .48  .73  .59

  63 pux111   1321 1530                            .49  .47  .54  .72  .75  .72  .67  .65  .61

  64 pux112   1315 1362                            .60

  65 pux082   1373 1560                                      .65  .64  .59  .64  .90  .92  .90  .89

  66 pux081   1373 1580                                      .77  .76  .77  .81  .90  .86  .83  .83  .81

  67 pux121   1335 1541                                 .49  .71  .79  .79  .80  .89  .90  .84

  68 pum931   1344 1450                                 .50  .77  .81  .82  .81

  69 pux191   1255 1382                  .88  .83  .73  .55  .54

  70 pux192   1254 1327                  .84  .78  .78

  71 pux193   1271 1360                  .80  .79  .68  .62

  72 pux171   1175 1271   .68  .83  .88

  73 pux172   1175 1272   .68  .83  .82

  74 pux172   1284 1362                       .73  .67  .65

 Av segment correlation   .68  .83  .85  .84  .71  .64  .55  .64  .69  .72  .74  .78  .80  .83  .79  .77  .79  .81  .83  .85

 PART 5:  CORRELATION OF SERIES BY SEGMENTS: Pumphouse update                                      16:43  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   1675 1700 1725 1750 1775 1800 1825 1850 1875 1900 1925 1950 1975

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

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

   1 pum212   1721 1999        .77  .78  .75  .69  .79  .91  .94  .95  .84  .77  .90

   2 pum041   1586 1999   .82  .86  .82  .80  .79  .75  .85  .87  .83  .76  .72  .72

   3 pum242   1550 1999   .80  .81  .83  .83  .82  .77  .82  .77  .78  .84  .80  .84

   4 pum221   1450 1999   .89  .92  .94  .90  .88  .89  .92  .91  .87  .81  .75  .82

   5 pum022   1439 1999   .75  .75  .81  .75  .75  .82  .89  .86  .77  .82  .85  .76

   6 pum241   1530 1999   .89  .90  .88  .85  .83  .82  .86  .90  .87  .76  .70  .84

   7 pum072   1379 1999   .84  .89  .91  .93  .93  .88  .90  .94  .90  .83  .88  .90

   8 pum151   1386 1999   .85  .85  .86  .83  .67  .66  .84  .85  .86  .79  .73  .77

   9 pum262   1415 1999   .81  .80  .86  .84  .82  .80  .85  .86  .88  .69  .68  .82

  10 pum122   1512 1999   .69  .65  .85  .87  .79  .76  .83  .84  .84  .82  .76  .85

  11 pum121   1414 1999   .89  .88  .88  .71  .75  .88  .89  .88  .86  .88  .85  .86

  12 pum251   1544 1999   .90  .91  .92  .91  .86  .83  .91  .88  .82  .82  .83  .86

  13 pum111   1667 1999   .88  .86  .78  .82  .87  .86  .91  .90  .88  .83  .83  .86

  14 pum132   1480 1880   .85  .87  .86  .77  .78  .80  .89  .90

  15 pum131   1430 1770   .82  .85  .82

  16 pum133   1452 1765   .81  .83  .87

  17 pum162   1499 1999   .79  .81  .89  .90  .82  .76  .81  .81  .76  .72  .80  .92

  18 pum112   1720 1999        .85  .83  .82  .88  .92  .92  .92  .92  .88  .80  .86

  20 pum231   1620 1999   .75  .78  .91  .85  .86  .88  .90  .88  .81  .77  .83  .87

  21 pum161   1470 1999   .80  .83  .87  .81  .74  .75  .86  .92  .88  .76  .81  .88

  22 pum281   1838 1999                                 .91  .91  .86  .80  .78  .86

  23 pum071   1410 1705   .89

  24 pum071   1785 1999                       .86  .84  .89  .90  .89  .82  .79  .81

  25 pum211   1819 1999                            .92  .94  .95  .93  .83  .79  .86

  26 pum011   1645 1999   .86  .83  .88  .89  .88  .90  .95  .95  .94  .88  .82  .85

  27 pum021   1400 1999   .82  .84  .84  .85  .82  .76  .87  .88  .82  .84  .82  .85

  28 pum012   1593 1999   .88  .87  .87  .87  .88  .92  .93  .94  .95  .88  .85  .78

  29 pum282   1809 1999                            .71  .46  .71  .81  .81  .76  .82

  30 pum062   1811 1999                            .68  .78  .72  .83  .73  .67  .81

  31 pum061   1811 1999                            .80  .90  .87  .91  .86  .80  .87

  32 pum271   1538 1999   .87  .87  .87  .86  .87  .91  .95  .90  .85  .84  .84  .91

  34 pum141   1487 1999   .94  .94  .92  .83  .79  .86  .89  .92  .87  .57  .58  .82

  35 pum142   1330 1999   .87  .92  .92  .90  .90  .86  .90  .93  .94  .89  .83  .87

  37 pum252   1720 1999        .94  .93  .91  .78  .79  .91  .79  .74  .83  .85  .91

  38 pum261   1354 1999   .84  .83  .87  .92  .86  .76  .90  .88  .89  .85  .81  .88

  39 pum272   1650 1999   .85  .84  .82  .73  .69  .69  .74  .76  .78  .67  .72  .84

  40 pum152   1398 1999   .83  .79  .82  .79  .80  .89  .91  .92  .90  .86  .85  .79

  41 pum222   1386 1705   .89

  43 pum232   1620 1999   .70  .74  .88  .77  .70  .75  .89  .87  .89  .82  .69  .84

  44 pum631   1850 2002                                      .75  .81  .68  .63  .76  .76

  45 pum661   1710 2002        .70  .65  .70  .71  .74  .85  .85  .77  .66  .74  .77  .78

  46 pum671   1640 2002   .66  .74  .83  .78  .78  .81  .89  .84  .69  .70  .75  .73  .76

  47 pum632   1859 2002                                      .84  .84  .74  .67  .75  .75

  48 pum842   1790 2002                       .78  .68  .74  .77  .72  .48  .56  .81  .81

  49 pum831   1765 2002                  .56  .59  .64  .89  .86  .87  .75  .68  .80  .80

  50 pum832   1735 2002             .50  .69  .73  .79  .82  .84  .90  .74  .66  .78  .78

  51 pum622   1705 2002        .83  .85  .83  .83  .87  .91  .87  .89  .81  .72  .85  .86

  52 pum651   1685 2002   .76  .78  .74  .82  .80  .83  .90  .92  .90  .77  .75  .84  .86

  53 pum811   1596 2002   .81  .82  .83  .79  .78  .82  .88  .89  .91  .85  .79  .76  .76

  54 pum821   1739 2002             .71  .76  .79  .84  .92  .93  .92  .78  .71  .82  .81

  55 pum621   1736 2002             .82  .87  .88  .88  .86  .88  .90  .85  .80  .82  .82

  56 pum662   1722 2002        .72  .71  .69  .64  .71  .87  .88  .85  .81  .77  .80  .81

  57 pum801   1712 2002        .67  .72  .76  .81  .71  .80  .76  .79  .85  .81  .81  .81

  58 pum641   1618 2002   .86  .90  .86  .81  .86  .89  .91  .76  .76  .77  .59  .72  .71

  59 pum611   1703 2002        .88  .87  .85  .85  .89  .91  .88  .91  .84  .75  .85  .84

  60 pum642   1628 2002   .88  .88  .84  .83  .84  .84  .90  .78  .77  .80  .63  .68  .67

  61 pum682   1364 1750   .78  .85  .82

 Av segment correlation   .83  .83  .83  .81  .80  .81  .87  .86  .85  .79  .76  .83  .79

 PART 7:  DESCRIPTIVE STATISTICS: Pumphouse update                                                 16:43  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 pum212   1721 1999    279     11      0    .839    .93   2.63   .420   .466   .372   2.59   .429  -.032   1

   2 pum041   1586 1999    414     16      0    .750    .67   2.10   .343   .677   .348   2.73   .357  -.006   2

   3 pum242   1550 1999    450     17      0    .798    .33   1.35   .209   .657   .478   2.61   .351  -.012   3

   4 pum221   1450 1999    550     21      0    .887    .49   1.47   .240   .547   .454   2.57   .356  -.009   2

   5 pum022   1439 1999    561     22      0    .815    .34    .96   .154   .529   .410   2.59   .274  -.017   3

   6 pum241   1530 1999    470     18      0    .840    .42   1.21   .213   .733   .350   2.53   .334  -.001   2

   7 pum072   1379 1999    621     24      0    .867    .47   1.19   .217   .546   .434   2.58   .340  -.008   3

   8 pum151   1386 1999    614     24      0    .793    .38    .98   .172   .597   .415   2.50   .300  -.006   1

   9 pum262   1415 1999    585     23      0    .848    .48   1.28   .226   .621   .414   2.40   .293   .016   1

  10 pum122   1512 1999    488     19      0    .842    .45   1.19   .222   .737   .374   2.45   .311  -.005   3

  11 pum121   1414 1999    586     23      0    .875    .32    .91   .167   .726   .401   2.54   .308  -.013   3

  12 pum251   1544 1999    456     18      0    .874    .40   1.29   .220   .638   .465   2.64   .377   .017   1

  13 pum111   1667 1999    333     13      0    .867    .56   1.50   .293   .669   .400   2.66   .337  -.007   1

  14 pum132   1480 1880    401     16      0    .828    .36    .89   .178   .664   .437   2.46   .321   .006   1

  15 pum131   1430 1770    341     13      0    .836    .45   1.25   .234   .775   .384   2.57   .336   .020   1

  16 pum133   1452 1765    314     12      0    .869    .45    .99   .191   .670   .357   2.39   .320   .039   1

  17 pum162   1499 1999    501     20      0    .836    .34   1.28   .179   .598   .489   2.46   .345  -.049   2

  18 pum112   1720 1999    280     11      0    .881    .81   2.04   .401   .677   .317   2.50   .337  -.016   1

  19 pum231   1412 1587    176      7      0    .790    .63   1.60   .297   .744   .338   2.74   .459  -.003   2

  20 pum231   1620 1999    380     15      0    .867    .30    .90   .169   .582   .540   2.37   .305  -.016   1

  21 pum161   1470 1999    530     21      0    .844    .31   1.21   .164   .580   .493   2.50   .369  -.019   1

  22 pum281   1838 1999    162      6      0    .857    .46   1.19   .190   .523   .379   2.56   .380  -.013   1

  23 pum071   1410 1705    296     12      0    .857    .51   1.66   .288   .736   .421   2.54   .341   .010   1

  24 pum071   1785 1999    215      8      0    .856    .33    .73   .162   .279   .598   2.48   .380  -.029   1

  25 pum211   1819 1999    181      7      0    .892    .82   1.91   .353   .314   .418   2.50   .330  -.008   1

  26 pum011   1645 1999    355     14      0    .883    .64   1.62   .302   .625   .392   2.67   .404   .015   1

  27 pum021   1400 1999    600     23      0    .827    .36   1.13   .184   .690   .404   2.54   .305  -.024   2

  28 pum012   1593 1999    407     16      0    .842    .67   1.81   .317   .627   .381   2.56   .339  -.001   3

  29 pum282   1809 1999    191      7      0    .775    .52   1.06   .214   .625   .367   2.61   .379   .019   1

  30 pum062   1811 1999    189      7      0    .749    .47    .72   .142   .432   .307   2.34   .301  -.027   1

  31 pum061   1811 1999    189      7      0    .858    .50    .83   .145   .298   .311   2.38   .270  -.001   1

  32 pum271   1538 1999    462     18      0    .902    .29    .86   .150   .288   .636   2.59   .378  -.004   2

  33 pum052   1449 1610    162      7      0    .860    .52   1.42   .272   .688   .446   2.51   .371  -.024   2

  34 pum141   1487 1999    513     20      0    .819    .46   1.71   .270   .712   .442   2.52   .347  -.018   1

  35 pum142   1330 1999    670     26      0    .808    .46   1.80   .281   .731   .438   2.47   .289  -.009   1

  36 pum252   1444 1620    177      7      0    .707    .54   1.58   .348   .838   .364   2.45   .265  -.009   1

  37 pum252   1720 1999    280     11      0    .885    .28    .65   .128   .309   .506   2.53   .391  -.035   1

  38 pum261   1354 1999    646     25      0    .837    .44    .98   .184   .498   .406   2.47   .304   .008   1

  39 pum272   1650 1999    350     13      0    .826    .29    .69   .159   .388   .627   2.59   .456  -.006   1

  40 pum152   1398 1999    602     24      0    .804    .52   1.51   .260   .703   .402   2.54   .329  -.008   1

  41 pum222   1386 1705    320     13      0    .854    .53   1.44   .293   .752   .409   2.47   .395  -.006   2

  42 pum232   1422 1580    159      7      0    .774    .55   1.21   .243   .686   .338   2.62   .468   .032   1

  43 pum232   1620 1999    380     15      0    .843    .36   1.04   .163   .549   .421   2.37   .298  -.019   1

  44 pum631   1850 2002    153      6      0    .729    .45    .77   .125   .295   .269   2.56   .406  -.019   2

  45 pum661   1710 2002    293     12      0    .741    .70   1.63   .310   .697   .279   2.73   .430  -.057   1

  46 pum671   1640 2002    363     15      0    .764    .69   2.13   .355   .618   .396   2.64   .396  -.008   1

  47 pum632   1859 2002    144      6      0    .783    .60   1.35   .217   .672   .231   2.61   .359  -.003   1

  48 pum842   1790 2002    213      9      0    .710    .45   1.11   .179   .535   .326   2.60   .344  -.027   1

 PART 7:  DESCRIPTIVE STATISTICS: Pumphouse update                                                 16:43  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 pum831   1765 2002    238     10      0    .753    .68   1.89   .273   .580   .318   2.59   .383  -.014   1

  50 pum832   1735 2002    268     11      0    .732    .61   1.84   .278   .643   .313   2.63   .373  -.016   1

  51 pum622   1705 2002    298     12      0    .846    .59   1.51   .256   .626   .300   2.74   .369  -.009   1

  52 pum651   1685 2002    318     13      0    .821    .50   1.60   .282   .777   .352   2.63   .416  -.030   1

  53 pum811   1596 2002    407     17      0    .783    .71   2.15   .335   .654   .347   2.52   .266  -.002   5

  54 pum821   1739 2002    264     11      0    .830    .93   2.33   .422   .455   .383   2.53   .379  -.007   1

  55 pum621   1736 2002    267     11      0    .859    .64   1.60   .268   .577   .294   2.65   .416  -.014   1

  56 pum662   1722 2002    281     12      0    .782    .65   1.64   .270   .653   .279   2.60   .374  -.023   1

  57 pum801   1712 2002    291     12      0    .766    .67   1.57   .312   .730   .301   2.58   .329  -.020   1

  58 pum641   1618 2002    385     16      0    .802    .55   1.66   .255   .662   .324   2.57   .327   .010   1

  59 pum611   1703 2002    300     12      0    .863    .63   1.66   .312   .686   .346   2.71   .387  -.006   1

  60 pum642   1628 2002    375     15      0    .809    .62   1.53   .253   .576   .291   2.67   .420   .035   1

  61 pum682   1364 1750    387     16      0    .781    .33   1.37   .252   .808   .479   2.46   .337   .004   2

  62 pux131   1296 1410    115      5      0    .611    .56   1.62   .324   .748   .382   2.57   .316  -.033   1

  63 pux111   1321 1530    210      9      0    .652    .62   1.87   .285   .771   .275   2.50   .316   .008   2

  64 pux112   1315 1362     48      1      0    .601    .49    .99   .217   .799   .243   2.60   .550   .026   1

  65 pux082   1373 1560    188      8      0    .805    .42   1.02   .169   .489   .352   2.42   .298   .027   1

  66 pux081   1373 1580    208      9      0    .826    .39    .80   .178   .559   .424   2.36   .299   .031   1

  67 pux121   1335 1541    207      8      0    .776    .57   1.57   .286   .809   .287   2.35   .333  -.001   1

  68 pum931   1344 1450    107      5      0    .703    .59   1.16   .238   .644   .318   2.51   .413   .005   1

  69 pux191   1255 1382    128      5      0    .742    .56   1.39   .297   .744   .322   2.53   .396   .007   1

  70 pux192   1254 1327     74      3      0    .832    .88   1.79   .317   .548   .278   2.34   .305  -.035   1

  71 pux193   1271 1360     90      4      0    .725    .59   1.28   .257   .781   .262   2.68   .537   .032   1

  72 pux171   1175 1271     97      3      0    .808    .36    .74   .132   .379   .372   2.45   .386  -.023   2

  73 pux172   1175 1272     98      3      0    .824    .30    .57   .110   .264   .414   2.46   .348  -.039   2

  74 pux172   1284 1362     79      3      0    .686    .28    .65   .125   .568   .382   2.71   .429   .035   1

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

 Total or mean:          23730    939      0    .821    .49   2.63   .238   .617   .400   2.74   .347  -.007

