Tidal Spherical Harmonic Coefficients


Citation for these data:

F. Lyard, F. Lefevre, T. Letellier, O. Francis, "Modelling the global ocean tides: insights from FES2004," Ocean Dynamics, 56, 394-415, 2006.

Coefficients below were computed by R. Ray, NASA/GSFC.


These spherical harmonic coefficients correspond to the FES2004 tide model, produced by Christian Le Provost's group at CNES. The tidal solutions are the result of assimilating satellite altimeter data into a hydrodynamic ocean model, using the inverse methods of Egbert et al. Several of the constituents, however, are purely numerical solutions, not based on altimetry; these include the long-period tides, the semidiurnal 2N2, and the quarter-diurnal M4.

These coefficients follow a consistent convention. Coefficients are given for prograde and retrograde waves. (In this context, "prograde" means in the direction of the tide-raising body, i.e. westward; this use follows standard tidal terminology, but it is opposite to that used for polar motion.)
Amplitude units are mm; phase lags are in degrees.


Mm

  n  m        D+     psi+        D-     psi-

  1  0      1.496  355.78
  1  1      0.481  259.20      0.537  252.58
  2  0     10.945  189.99
  2  1      0.180  223.28      0.033   28.40
  2  2      0.128  182.63      0.009  162.20
  3  0      0.683  288.16
  3  1      0.360   46.46      0.372  323.60
  3  2      0.073  171.02      0.071  142.08
  3  3      0.033  272.30      0.034   78.15
  4  0      2.732  341.46
  4  1      0.083   61.67      0.053  271.54
  4  2      0.054  170.41      0.053  184.20
  4  3      0.008  113.69      0.006  201.29
  4  4      0.007  286.49      0.007   77.12
  5  0      3.578  200.90
  6  0      1.102  341.95
  7  0      4.064  195.30
  8  0      0.502  341.85
  9  0      2.354  188.09
 10  0      0.482  173.51

Mf

  n  m        D+     psi+        D-     psi-

  1  0      2.737    8.21
  1  1      1.164  314.10      1.431  284.99
  2  0     18.881  196.39
  2  1      0.445  259.97      0.290   46.16
  2  2      0.367  188.81      0.055  116.81
  3  0      2.087  327.51
  3  1      0.558   53.97      0.667  327.05
  3  2      0.184  176.75      0.178  137.50
  3  3      0.070  278.46      0.080   82.74
  4  0      6.470  341.60
  4  1      0.227   55.35      0.196  249.57
  4  2      0.111  157.50      0.116  184.89
  4  3      0.017  121.88      0.021  199.55
  4  4      0.015  288.56      0.015   79.18
  5  0      5.609  215.48
  6  0      2.436  348.55
  7  0      6.762  206.59
  8  0      1.243    1.42
  9  0      4.311  198.78
 10  0      0.865  168.47

Mt

  n  m        D+     psi+        D-     psi-

  1  0      0.482   22.16
  1  1      0.238  348.01      0.335  314.03
  2  0      3.319  199.63
  2  1      0.112  312.98      0.074   66.65
  2  2      0.086  206.28      0.016  126.97
  3  0      0.482  353.07
  3  1      0.074   32.56      0.111  332.04
  3  2      0.042  178.03      0.044  142.87
  3  3      0.016  281.38      0.018   91.27
  4  0      1.368  344.38
  5  0      0.883  226.39
  6  0      0.562  355.23
  7  0      1.204  213.13
  8  0      0.265   29.70
  9  0      0.783  206.88
 10  0      0.244  167.75

Q1

  n  m        D+     psi+        D-     psi-

  1  0      2.476  262.94
  1  1      0.843   46.80      0.922  328.65
  2  0      3.760  319.93
  2  1      5.528  133.54      2.719  283.68
  2  2      1.118  342.91      0.299  234.90
  3  0      1.489   43.88
  3  1      3.631  344.78      2.419   98.73
  3  2      0.686  296.73      0.242  103.22
  3  3      0.442  126.34      0.358  208.98
  4  0      6.854   94.20
  4  1      3.246  162.39      1.015  109.94
  4  2      0.410  283.79      0.064   34.70
  4  3      0.119  145.99      0.112  356.22
  4  4      0.034  275.65      0.030   73.93
  5  1      2.317  334.43      0.887  310.98
  6  1      0.567  159.45      0.278  240.97
  7  1      0.711  314.74      0.536  308.90
  8  1      0.141  338.40      0.222  112.27
  9  1      0.136   48.84      0.277  342.42
 10  1      0.363  359.73      0.085  244.53

O1

  n  m        D+     psi+        D-     psi-

  1  0     15.790  272.89
  1  1      3.581   57.42      5.715  342.85
  2  0     10.288  336.74
  2  1     26.412  137.13     11.825  299.89
  2  2      5.917  339.71      0.578  251.37
  3  0      9.284   45.52
  3  1     14.726    7.13     11.818  113.64
  3  2      3.882  310.62      1.711  114.50
  3  3      2.334  136.61      1.582  236.32
  4  0     23.497  101.20
  4  1     16.409  172.56      6.182  124.77
  4  2      1.732  302.48      0.106  175.65
  4  3      0.592  149.23      0.416   25.20
  4  4      0.174  291.31      0.170   77.51
  5  1     10.690  340.44      3.556  303.82
  6  1      3.059  173.69      1.642  245.96
  7  1      3.473  317.20      2.478  319.20
  8  1      0.926  335.11      1.020  133.73
  9  1      0.420   38.78      1.425  353.81
 10  1      1.660  358.65      0.103  152.88

P1

  n  m        D+     psi+        D-     psi-

  1  0      8.125  283.43
  1  1      1.586   87.98      3.173    0.93
  2  0      2.456  208.46
  2  1      9.733  132.83      4.927  317.18
  2  2      3.294  354.60      0.520  173.62
  3  0      7.658   44.46
  3  1      3.202   55.80      5.647  136.41
  3  2      1.668  339.42      1.522  147.24
  3  3      1.184  154.60      0.701  267.73
  4  0      5.922   74.66
  4  1      7.105  196.53      2.864  131.84
  4  2      0.650  300.57      0.192  288.07
  4  3      0.241  161.18      0.127   50.88
  4  4      0.086  310.64      0.125   92.31
  5  1      4.525  345.82      2.055  294.48
  6  1      0.888  193.93      1.125  244.05
  7  1      1.601  318.00      1.053  326.38
  8  1      0.410  322.18      0.199  126.34
  9  1      0.351    5.56      0.612   16.67
 10  1      0.766   15.68      0.348  164.45

K1

  n  m        D+     psi+        D-     psi-

  1  0     24.473  283.84
  1  1      4.788   89.54      9.678    0.17
  2  0      7.645  207.22
  2  1     29.389  132.95     14.913  317.16
  2  2      9.991  354.62      1.657  172.74
  3  0     23.341   44.62
  3  1      9.627   55.19     17.138  136.33
  3  2      5.018  339.35      4.633  147.70
  3  3      3.583  154.64      2.109  268.22
  4  0     18.405   73.91
  4  1     21.437  197.12      8.697  131.54
  4  2      1.948  299.74      0.603  288.23
  4  3      0.725  160.99      0.385   50.79
  4  4      0.261  310.97      0.376   92.46
  5  1     13.776  345.47      6.264  294.23
  6  1      2.710  195.77      3.474  245.21
  7  1      4.825  317.58      3.255  325.34
  8  1      1.234  319.69      0.542  129.39
  9  1      1.097    8.09      1.789   16.03
 10  1      2.344   16.80      1.066  169.46

2N2

  n  m        D+     psi+        D-     psi-

  1  0      0.405   26.81
  1  1      0.266  336.53      0.128  329.62
  2  0      0.770  352.93
  2  1      0.333  138.03      0.329  168.55
  2  2      0.913  108.16      0.138  355.68
  3  0      2.218  258.06
  3  1      0.275   89.91      0.849   33.57
  3  2      0.138  236.74      0.034   73.58
  3  3      0.163   20.29      0.136  338.35
  4  0      2.947  152.63
  4  1      0.324   18.36      0.332   55.88
  4  2      0.360  292.35      0.206   15.74
  4  3      0.044  239.12      0.066  131.99
  4  4      0.025  122.98      0.011  131.45
  5  2      0.144   71.54      0.227  141.08
  6  2      0.064   56.92      0.048  261.99
  7  2      0.052  161.07      0.082  289.38
  8  2      0.034  236.12      0.010  269.83

N2

  n  m        D+     psi+        D-     psi-

  1  0      2.193   44.85
  1  1      1.299  281.80      1.049   11.34
  2  0      2.100  272.65
  2  1      2.418  165.70      1.615  179.99
  2  2      7.210  121.08      1.062    3.91
  3  0     12.476  292.42
  3  1      2.273   98.17      6.541   38.88
  3  2      1.005  283.01      0.422  110.08
  3  3      1.007   30.82      0.981  355.25
  4  0     14.683  163.84
  4  1      3.600   39.73      3.140   75.97
  4  2      2.386  310.05      1.302   53.28
  4  3      0.367  252.62      0.480  150.57
  4  4      0.178  139.10      0.088  181.15
  5  2      0.752   86.28      1.643  170.81
  6  2      0.653   90.13      0.334  293.86
  7  2      0.298  206.60      0.544  316.24
  8  2      0.227  232.03      0.086  290.33
  9  2      0.043  247.40      0.120   83.88
 10  2      0.051   75.13      0.067  317.47

M2

  n  m        D+     psi+        D-     psi-

  1  0     10.152   49.06
  1  1      6.767  308.66      3.143   16.90
  2  0     28.685  269.62
  2  1     13.610  199.55      3.746  152.59
  2  2     32.340  130.07      5.817   29.09
  3  0     38.272  297.84
  3  1     13.560  104.48     33.183   53.26
  3  2      2.905  278.05      2.176  138.27
  3  3      4.522   53.51      4.575    8.80
  4  0     50.873  154.46
  4  1     22.225   59.59     17.226  108.00
  4  2     10.581  321.08      4.125   90.53
  4  3      2.248  271.46      2.265  171.28
  4  4      0.793  147.36      0.427  222.57
  5  2      2.858   80.18      7.104  192.97
  6  2      4.023  118.93      1.175  325.81
  7  2      1.235  243.87      2.345  336.43
  8  2      1.310  238.56      0.598  295.18
  9  2      0.382  314.15      0.574   92.74
 10  2      0.252   96.07      0.394    0.27

S2

  n  m        D+     psi+        D-     psi-

  1  0      3.133   75.49
  1  1      2.310   23.71      0.944   51.10
  2  0     11.696  308.55
  2  1      5.695  262.11      4.014  124.81
  2  2     11.770  134.80      2.726   84.20
  3  0     18.319  296.13
  3  1      4.799  133.62     10.756  102.38
  3  2      2.980  244.75      1.176  249.42
  3  3      0.807  121.95      1.772   37.01
  4  0     28.409  171.84
  4  1     11.628  105.28      4.380  100.98
  4  2      3.684  343.59      0.616   28.77
  4  3      0.966  334.56      0.647  194.36
  4  4      0.328  154.87      0.194  284.25
  5  2      1.551   68.54      2.225  201.55
  6  2      1.761  164.61      0.343  298.79
  7  2      0.419  291.97      0.623    7.90
  8  2      0.476  261.48      0.400  344.80
  9  2      0.247   19.12      0.201  123.10
 10  2      0.163  137.50      0.168   57.65

K2

  n  m        D+     psi+        D-     psi-

  1  0      1.031   53.29
  1  1      0.626    6.65      0.035  187.03
  2  0      3.606  298.17
  2  1      1.298  259.00      1.139  114.94
  2  2      2.919  128.91      0.618   72.32
  3  0      5.126  287.86
  3  1      1.398  116.68      2.916   95.82
  3  2      0.803  239.24      0.335  250.53
  3  3      0.207  120.21      0.473   33.85
  4  0      7.669  162.05
  4  1      2.970  102.59      1.382   97.83
  4  2      0.995  338.06      0.209    2.79
  4  3      0.242  328.19      0.156  178.74
  4  4      0.087  145.38      0.050  281.02
  5  2      0.400   67.95      0.593  192.23
  6  2      0.455  160.80      0.095  312.01
  7  2      0.110  286.63      0.156    0.17
  8  2      0.115  251.93      0.108  343.58
  9  2      0.065   27.95      0.050  113.30
 10  2      0.035  124.61      0.036   66.26

M4

  n  m        D+     psi+        D-     psi-

  1  0      0.011  273.42
  1  1      0.021   77.33      0.015  200.89
  2  0      0.142  315.84
  2  1      0.033  281.33      0.017   22.72
  2  2      0.006  287.81      0.007  219.74
  3  0      0.197  154.11
  3  1      0.006  260.16      0.036  129.43
  3  2      0.010  175.95      0.005  113.66
  3  3      0.006  155.08      0.003  191.66
  4  0      0.069   74.47
  4  1      0.068  105.81      0.052  227.74
  4  2      0.005   52.88      0.011  241.36
  4  3      0.003  336.31      0.001  325.57
  4  4      0.000  341.93      0.001  312.80