Are filters the only way or it can be done by following other algorithms.
It depends on what you want to do. For example, a low-pass filter is a poor solution for a study of storm surges, because they occur on short time-scales. However, it would be an acceptable solution if the goal is to explore seasonal variation.
I think most people use a harmonic-analysis tool to remove tides. In matlab you can use t-tide. In R you can use oce::tidem
Hey dan,
I want to remove the diurnal and semi-diurnal signals from the data or the other signals due to the shallow water constituents from the hourly datasets.
Above mentioned pl66tn function is available in https://github.com/sea-mat/bobstuff/blob/master/pl66tn.m
you can do it by
TAP: Tidal Analysis and Prediction software
https://cirpwiki.info/wiki/Utilities#TAP:_Tidal_Analysis_and_Prediction_software
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