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NTIP is an input in the fort.15 file that selects the astronomical forcing input type.

Parameter Summary

The following table is a summary of possible NTIP values, description, details, and other necessary input parameters and files.

NTIP Value Description Details Other Required Inputs
0 No Astronomical Forcing - NTIF = 0
1 Astronomical Tidal Potential Reconstructs the tidal elevation using the analytical formulation for the equilibrium tidal potential Eq (27), page 17 in Leuttich1992 ref. NTIF > 0
2 Astronomical Tidal Potential plus Self-attraction and Loading (SAL) Tide[1] Reconstructs the tidal elevation by summing the contribution from the analytical formulation for the equilibrium tidal potential found in Leuttich1992 ref with the contribution from the prescribed SAL constituent values found in the fort.24 file. NTIF > 0, fort.24 file
  1. Ray, R.D., 1998. Ocean self-attraction and loading in numerical tidal models. Mar. Geod. 21, 181–192. doi:10.1080/01490419809388134