The Impact of the Internal Tide on Data-Assimilative Model Estimates of the Surface Tide
Published In
Ocean Modelling
Document Type
Citation
Publication Date
5-1-2007
Abstract
We use a synthetic data experiment to assess the accuracy of ocean tides estimated from satellite altimetry data, with emphasis on the impact of the phase-locked internal tide, which has a surface expression of several centimeters near its sites of genesis. Previous tidal estimates have regarded this signal as a random measurement error; however, it is deterministic and not scale-separated from the barotropic (surface) tide around complex bathymetric features. The synthetic data experiments show that the internal tide has a negligible impact on the barotropic tidal fields inferred under these circumstances, and the barotropic dissipation (a quadratic functional of the tidal fields) is in good agreement with the energetics of the three-dimensional regional primitive equations model which is the source of the synthetic data.
Rights
Copyright © 2007 Elsevier Ltd. All rights reserved.
Locate the Document
DOI
10.1016/j.ocemod.2007.05.001
Persistent Identifier
http://archives.pdx.edu/ds/psu/20796
Citation Details
Zaron, Edward and Egbert, Gary, "The Impact of the Internal Tide on Data-Assimilative Model Estimates of the Surface Tide" (2007). Civil and Environmental Engineering Faculty Publications and Presentations. 234.
http://archives.pdx.edu/ds/psu/20796