Intermittency, log-normal statistics, and multifractal cascade process in high-resolution satellite images of cloud structure

We apply a wavelet based deconvolution method to LANDSAT satellite images of cloudy scenes. This method proves to be very efficient to disentangle the convective cell anisotropic texture from the isotropic scale invariant background radiance fluctuations. We show that the experimental data do not allow us to discriminate between various phenomenological cascade models that account for intermittency and their log-normal approximations. We comment on the multifractal properties of stratocumulus radius fields comparatively to fully developed turbulence data.