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| Guinehut, S; Le Traon, Pierre-yves; Larnicol, G. |
| Differences and complementarities between altimeter and hydrographic data are studied to describe the sea level and ocean circulation variations in terms of steric and non-steric contributions. Altimeter sea level anomalies (SLA) and hydrographic dynamic height anomalies (DHA) agree remarkably well. They also reveal, however, systematic large-scale differences in several areas of the Pacific and Indian oceans that are related to a barotropic, Sverdrup-like, response of the ocean to wind forcing. In addition, the use of the two data sets provides a good estimation of the partition between barotropic and baroclinic modes needed for data synthesis or assimilation studies. |
| Tipo: Text |
Palavras-chave: Physical Oceanography; Hydrography; Altimetry. |
| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/2006/publication-1551.pdf |
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| Pottier, C; Garcon, V; Larnicol, G; Sudre, J; Schaeffer, P; Le Traon, Pierre-yves. |
| Two approaches of ocean color data merging were tested and compared in the North and Equatorial Atlantic Basin: the weighted averaging and the objective analysis. The datasets used were the daily level-3 binned data of chlorophyll-a from the Sea-viewing Wide Field-of-view Sensor (SeaWiFS) and Moderate Resolution Imaging Spectroradiometer on the Aqua satellite over the year 2003, which is the first common full year of operation. Since they represent input for both approaches, matchups between the satellite and the in situ data from the SeaWiFS Bio-optical Archive and Storage System and the Atlantic Meridional Transect were first studied to compute a spatial map of the root mean-square error and of the bias. Because of the log distribution of the chlorophyll... |
| Tipo: Text |
Palavras-chave: Signal analysis; Sea surface; Marine vegetation; Biology. |
| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/2006/publication-3631.pdf |
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