No one ever answered my question, what formula do they use to predict tides in the fe model?
We use the following formula for predicting tides in the FE model:
h = H
o + Sum{ƒH cos[at + (V
o+u) - K]}
It provides for the summation of 10 of the principal constituents, and the resulting predicted heights can be registered by a curve with some manual tracing.
h = height of tide at any time t.
H
o = mean height of water level above datum used for prediction.
H = mean amplitude of any constituent A.
ƒ = factor for reducing mean amplitude H to year of prediction.
a = speed of constituent A.
t = time reckoned from some initial epoch such as beginning of year of predictions.
(V
o+u) = value of equilibrium argument of constituent A when t = 0.
K = epoch of constituent A.
Each of the principle constituents are defined in the
Tide and Current Glossary put out by the NOAA.