Exploiting the potential of an improved multimission altimetric data set over the coastal ocean

Details Exploiting the potential of an improved multimission altimetric data set over the coastal ocean Exploiting the potential of an improved multimission altimetric data set over the coastal ocean

May 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008georl..3510601b&link_type=abstract

Geophysical Research Letters, Volume 35, Issue 10, CiteID L10601

Physics

11

Oceanography: General: Ocean Observing Systems, Oceanography: General: Remote Sensing And Electromagnetic Processes (0689, 2487, 3285, 4455, 6934), Oceanography: General: Descriptive And Regional Oceanography, Oceanography: Physical: Currents, Oceanography: Physical: Instruments And Techniques

Scientific paper

Until now, most satellite altimetry studies of the coastal ocean have been based on along-track data from a single mission, whereas up to four missions were operative in 2002-2005. Here, to monitor the coastal ocean we have applied specialized corrections and dedicated processing strategies to compute a multimission data set at a mean distance of 32 km of the coast. The resulting altimetric data set is compared with sea level data from three in situ stations over a coastal zone of the northwestern Mediterranean. The mean rms difference between this data set and the sea level stations is 2.9 cm against 3.7 cm when using the AVISO altimetric product. Comparison of altimeter-derived geostrophic velocities with a mooring also shows that the spatial and temporal variability of the surface current field is well reproduced. The agreement with in situ measurements extends to intraseasonal time scales showing a significant improvement compared to previous studies in the 50 km coastal-band.

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