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Impact of multiple altimeter data and mean dynamic topography in a global analysis and forecasting system ArchiMer
Hamon, Mathieu; Greiner, Eric; Le Traon, Pierre-yves; Remy, Elisabeth.
Satellite altimetry is one of the main sources of information used to constrain global ocean analysis and forecasting systems. In addition to in situ vertical temperature and salinity profiles, and Sea Surface Temperature (SST) data, Sea Level Anomalies (SLA) from multiple altimeters are assimilated through the knowledge of a surface reference, the Mean Dynamic Topography (MDT). The quality of analyses and forecasts mainly depends on the availability of SLA observations and on the accuracy of the MDT. A series of Observing System Evaluations (OSEs) were conducted to assess the relative importance of the number of assimilated altimeters and the accuracy of the MDT in a Mercator Ocean global ¼° ocean data assimilation system. Dedicated tools were used to...
Tipo: Text Palavras-chave: Ocean; Sea level; Remote sensing; Forecast verification; Skill; Operational forecasting; General circulation models.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00502/61389/65053.pdf
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