Global regularity of 2D Rayleigh-Bénard equations with logarithmic supercritical dissipation

In this paper, we study the global regularity problem for the 2D Rayleigh-Bénard equations with logarithmic supercritical dissipation. By exploiting a combined quantity of the system, the technique of Littlewood-Paley decomposition and Besov spaces, and some commutator estimates, we establish the global regularity of a strong solution to this equations in the Sobolev space $H^s({\mathbb{R}}^2)$ for $s\ge 2$.