An observational study of energy balance in the atmospheric lunar tide

Details An observational study of energy balance in the atmospheric lunar tide An observational study of energy balance in the atmospheric lunar tide

Mar 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991papge.137....1p&link_type=abstract

Pure and Applied Geophysics PAGEOPH, Volume 137, Issue 1-2, pp. 1-33

Physics

Geophysics

4

Atmospheric Tide, Lunar Tide, Tidal Dissipation

Scientific paper

Analyses of satellite orbit-perturbation and altimeter data have been used in the past few years to evaluate sea-tide dissipation. A value of about 2.5 TW for the M2 tide is emerging from this work, which for the first time has placed our knowledge of sea-tide energy balance on a firm observational basis. A comparable improvement for the air tide is not yet possible, but an energy-balance estimate of M2 air-tide dissipation is made here from the best available spherical-harmonic analysis of the lunar barometric tide, namely that of 1969 by Haurwitz and Cowley. Full account is taken of the flux of tide energy from the ocean, by means of sea-tide elevation derived from satellite data, and effects of sea-tide attraction and load are included. The result of this observational assessment is an M2 air-tide dissipation of about 10 GW maintained almost entirely, on the average, by the sea tide.

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