Tidal Harmonic Analysis and Prediction

of the tool is to analyse tidal data, calculate harmonic constants and generate astronomical tidal predictions at coastal locations (usually ports & harbours) in the UK and overseas. Tidal analysis and prediction involves the application of science and technology to analyse and predict astronomically-forced sea surface heights and horizontal streams (currents) for a given location and time. It includes collecting observations using appropriate platforms (tide gauges and current meters and the like). The predicti...

The 'review' forms a part of the whole 'quality control' of the harmonic analysis and prediction process. That is to say that the harmonic constants derived from the harmonic analysis of tidal observations are then used to re-predict the timeseries from which they were initially derived. This allows for the calculation of 'residuals', i.e. the difference between the predicted vs. observed values, allowing for an u...

There is no formal appeals process. Any user feedback on UKHO tidal products and services is channelled through UKHO Customer Services; see https://www.admiralty.co.uk/contact-us