материалы конференции

En

Journal of Physics: Conference Series

ISSN:17426588

2020

10.1088/1742-6596/1675/1/012117

New information on the nature of the ocean's mesoscale variability is presented at [1] based on the analysis of altimetric observations accumulated over almost thirty years. Processing of remote sensing data presented in this paper made it possible to test general conclusions about the properties of mesoscale variability obtained earlier including theoretical assumptions concerning eddy structure and kinematics. Analysis of altimetry measurements presented in [1] is applied in this paper to test major conclusions made earlier based on restricted POLYMODE observations and theoretical models. Altimetry confirms the rare location of eddies through space and universal eddy structure. Comparison of the meridional displacements of eddies from theory and observations gives indirect confirmation of radiation of Rossby waves by eddies, the possibility of transferring energy from waves to eddies, as well as estimations of the impact of large-scale currents on the eddy propagation. Speculations about possible baroclinic instability impact and spectral energy cascading to mesoscale range permit to build a bridge between observations and the concept of the eddy-wave range of geostrophic turbulence. © Published under licence by IOP Publishing Ltd.

Atmospheric turbulence, Hydrodynamics, Mechanical waves, Remote sensing

2020-12-30 11:47:54