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GEOPHYSICAL RESEARCH LETTERS, VOL. 29, NO. 24, 2153, doi:10.1029/2002GL016340, 2002

Atmospheric pressure corrections in geodesy and oceanography: A strategy for handling air tides

Rui M. Ponte

Atmospheric and Environmental Research, Inc., Lexington, Massachusetts, USA


Richard D. Ray

Space Geodesy Branch, NASA Goddard Space Flight Center, Greenbelt, Maryland, USA


Abstract

Global pressure data are often needed for processing or interpreting modern geodetic and oceanographic measurements. The most common source of these data is the analysis or reanalysis products of various meteorological centers. Tidal signals in these products can be problematic for several reasons, including potentially aliased sampling of the semidiurnal solar tide as well as the presence of various modeling or timing errors. Building on the work of Van den Dool and colleagues, we lay out a strategy for handling atmospheric tides in (re)analysis data. The procedure also offers a method to account for ocean loading corrections in satellite altimeter data that are consistent with standard ocean-tide corrections. The proposed strategy has immediate application to the on-going Jason-1 and GRACE satellite missions.

Published 18 December 2002.

Index Terms: 3384 Meteorology and Atmospheric Dynamics: Waves and tides; 4556 Oceanography: Physical: Sea level variations; 1299 Geodesy and Gravity: General or miscellaneous.

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Citation: Ponte, R. M., and R. D. Ray (2002), Atmospheric pressure corrections in geodesy and oceanography: A strategy for handling air tides, Geophys. Res. Lett., 29(24), 2153, doi:10.1029/2002GL016340.