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A New Method of De-Aliasing Large-Scale High-Frequency Barotropic Signals in the Mediterranean Sea ArchiMer
Hu, Denghui; Xu, Yongsheng.
With the development of satellite observation technology, higher resolution and shorter return cycle have also placed higher demands on satellite data processing. The non-tide high-frequency barotropic oscillation in the marginal sea produces large aliasing errors in satellite altimeter observations. In previous studies, the satellite altimeter aliasing correction generally relied on a few bottom pressure data or the model data. Here, we employed the high-frequency tide gauge data to extract the altimeter non-tide aliasing correction in the west Mediterranean Sea. The spatial average method and EOF analysis method were adopted to track the high-frequency oscillation signals from 15 tide gauge records (TGs), and then were used to correct the aliasing errors...
Tipo: Text Palavras-chave: Tide gauge; EOF analysis; De-aliasing; Altimeter.
Ano: 2020 URL: https://archimer.ifremer.fr/doc/00641/75262/75467.pdf
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