Journal
JOURNAL OF ATMOSPHERIC AND OCEANIC TECHNOLOGY
Volume 34, Issue 2, Pages 437-446Publisher
AMER METEOROLOGICAL SOC
DOI: 10.1175/JTECH-D-16-0142.1
Keywords
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Funding
- Ocean Surface Topography program of the National Aeronautics and Space Administration
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Standard methods of tidal inference should be revised to account for a known resonance that occurs mostly within the K-1 tidal group in the diurnal band. The resonance arises from a free rotational mode of Earth caused by the fluid core. In a set of 110 bottom-pressure tide stations, the amplitude of the P-1 tidal constituent is shown to be suppressed relative to K-1, which is in good agreement with the resonance theory. Standard formulas for the K-1 nodal modulation remain essentially unaffected. Two examples are given of applications of the refined inference methodology: one with monthly tide gauge data and one with satellite altimetry. For some altimeter-constrained tide models, an inferred P-1 constituent is found to be more accurate than a directly determined one.
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