Ocean Dynamics

, Volume 60, Issue 5, pp 1167–1176

Bottom pressure tides along a line in the southeast Atlantic Ocean and comparisons with satellite altimetry


DOI: 10.1007/s10236-010-0316-0

Cite this article as:
Ray, R.D. & Byrne, D.A. Ocean Dynamics (2010) 60: 1167. doi:10.1007/s10236-010-0316-0


Seafloor pressure records, collected at 11 stations aligned along a single ground track of the Topex/Poseidon and Jason satellites, are analyzed for their tidal content. With very low background noise levels and approximately 27 months of high-quality records, tidal constituents can be estimated with unusually high precision. This includes many high-frequency lines up through the seventh-diurnal band. The station deployment provides a unique opportunity to compare with tides estimated from satellite altimetry, point by point along the satellite track, in a region of moderately high mesoscale variability. That variability can significantly corrupt altimeter-based tide estimates, even with 17 years of data. A method to improve the along-track altimeter estimates by correcting the data for non-tidal variability is found to yield much better agreement with the bottom-pressure data. The technique should prove useful in certain demanding applications, such as altimetric studies of internal tides.


Oceanic tidesSatellite altimetryOcean bottom pressure

Copyright information

© US Government 2010

Authors and Affiliations

  1. 1.NASA Goddard Space Flight CenterGreenbeltUSA
  2. 2.School of Marine SciencesUniversity of MaineOronoUSA