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We study the shape of convective rolls in the Marine Atmospheric BoundaryLayer from Synthetic Aperture Radar images of the ocean. We propose amultiscale analysis with structure functions which allow an easy generalizationto analyse high-order statistics and so to finely describe the shape of therolls. The two main results are : 1) second order structure functioncharacterizes the size and direction of rolls just like correlation or powerspectrum do, 2) high order statistics can be studied with skewness and Flatnesswhich characterize the asymmetry and intermittency of rolls respectively. Fromthe best of our knowledge, this is the first time that the asymmetry andintermittency of rolls is shown from radar images of the ocean surface.

Two-dimensional structure functions to characterize convective rolls in the marine atmospheric boundary layer from Sentinel-1 SAR images