Technical note: On seasonal variability of the M2 tide
- Geodesy & Geophysics Lab., NASA Goddard Space Flight Center, Greenbelt, Maryland, USA
Abstract. Seasonal variability of the M2 ocean tide can be detected at many ports, perhaps most. Examination of the cluster of tidal constituents residing within the M2 tidal group can shed light on the physical mechanisms underlying seasonality. In broadest terms these are astronomical, frictional/advective interactions, and climate processes; some induce annual modulations, some semiannual, in amplitude, phase, or both. This note reviews how this occurs and gives an example from each broad category. Phase conventions and their relationship to causal mechanisms, as well as nomenclature, are also addressed.
Status: open (until 23 Jun 2022)
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