Multiscale SOC in turbulent convection
  Using data obtained in a laboratory thermal convection experiment at high Rayleigh numbers, it is shown that the multiscaling properties of the observed mean wind reversals are quantitatively consistent with analogous multiscaling properties of the Bak-Tang-Wiesenfeld prototype model of self-organized criticality in two dimensions. 
K.R. Sreenivasan, A. Bershadskii and J.J. Niemela