Sponsor
This project was supported by NASA award NNX09AF20G, Ocean Surface Topography Science Team, “Studies of Surface and Internal Tides.”
Published In
Geophysical Research Letters
Document Type
Article
Publication Date
5-2017
Subjects
Internal waves -- Mathematical models, Internal waves -- Remote sensing, Tidal currents
Abstract
Internal waves at tidal frequencies, i.e., the internal tides, are a prominent source of variability in the ocean associated with significant vertical isopycnal displacements and currents. Because the isopycnal displacements are caused by ageostrophic dynamics, they contribute uncertainty to geostrophic transport inferred from vertical profiles in the ocean. Here it is demonstrated that a newly developed model of the main semidiurnal (M2) internal tide derived from satellite altimetry may be used to partially remove the tide from vertical profile data, as measured by the reduction of steric height variance inferred from the profiles. It is further demonstrated that the internal tide model can account for a component of the near-surface velocity as measured by drogued drifters. These comparisons represent a validation of the internal tide model using independent data and highlight its potential use in removing internal tide signals from in situ observations.
DOI
10.1002/2017GL072950
Persistent Identifier
http://archives.pdx.edu/ds/psu/20921
Citation Details
Zaron, E. D., & Ray, R. D. (2017). Using an altimeter‐derived internal tide model to remove tides from in situ data. Geophysical Research Letters, 44(9), 4241-4245, doi:10.1002/2017GL072950.
Included in
Civil and Environmental Engineering Commons, Other Oceanography and Atmospheric Sciences and Meteorology Commons
Description
Originally appeared in Geophysical Research Letters, vol. 44, pages 4241-4245. Published by the American Geophysical Union. DOI: 10.1002/2017GL072950.
May be found at http://onlinelibrary.wiley.com/doi/10.1002/2017GL072950/abstract