Abstract Studies of mesoscale variability resulting from ocean circulation is possible by the use of satellite altimetry. Three approaches are possible, (1) satellite observations on repetitive track, (2) satellite observations at the crossover point of ascending and descending tracks, and (3) satellite measurement of sea level differences. The results concern global statistical parameters (RMS kinetic energy, wave number spectra), or local synoptic maps of dynamic topography. More recently the incorporation of the latter into dynamical models of the mesoscale circulation has been achieved. De Mey and Robinson have shown how the forcing of a mesoscale model by the altimetric height along the boundaries of the model allow to transfer the surface satellite information onto deep circulation pattern. Similarly, Perigaud and Delecluze have indicated how the state of a two layer, wind-forced non linear model of the Somali current can be readjusted by altimetry data. These approaches are means of merging the altimetric information with other data and with a dynamical description of the system. This will likely be the dominant approaches of future oceanographic studies.
Progress in mesoscale variability analysis from satellite altimetry data
Advances in Space Research ; 9 , 7 ; 467-472
1989-01-01
6 pages
Article (Journal)
Electronic Resource
English
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